11 Feb 2026

Bearing Inventory for FAG, TIMKEN, INA

Introduction

This document serves as a comprehensive procurement and technical reference guide for the bearing inventory of three world-renowned bearing manufacturers: FAG, TIMKEN, and INA. The inventory covers a wide range of bearing models, including deep groove ball bearings, cylindrical roller bearings, spherical roller bearings, angular contact ball bearings, thrust bearings, and needle roller bearings, which are widely adapted to key equipment in automotive, aerospace, industrial machinery, wind power generation, metallurgy, mining, and precision instrumentation industries. Specifically, FAG bearings (such as the 22205-E1, B7012-C-T-P4S-UL series) are compatible with high-precision CNC machine tools and wind turbine main shafts; TIMKEN bearings (including 30206M, 22318EMW33W800C4) are ideal for heavy-duty truck axles, metallurgical rolling mills, and construction machinery; INA bearings (such as NA2205-2RSR, ZKLF2575-2RS) are widely used in automotive transmissions, textile machinery, and precision linear motion systems.

Target users of this inventory include procurement managers of manufacturing enterprises, maintenance engineers of industrial equipment, technical supervisors of bearing application projects, and distributors specializing in bearing sales. For procurement personnel, this guide provides clear brand positioning, model specifications, and core performance parameters to help quickly screen products that meet procurement budgets and application requirements; for maintenance engineers, it offers detailed technical parameters, structural characteristics, and on-site maintenance solutions to solve bearing failure problems efficiently; for distributors, it clarifies the market positioning and application scenarios of each model, facilitating accurate matching with customer needs. The core purpose of this inventory is to integrate procurement reference standards and technical solution guidelines, realizing the unification of "procurement efficiency improvement" and "technical problem solving", and providing reliable support for the stable operation of various industrial equipment.

Product Overview

The bearings included in this inventory are all original products from FAG, TIMKEN, and INA, three leading brands in the global bearing industry, with complete certification qualifications (such as ISO 9001 quality management system certification, ISO 14001 environmental management system certification, and IATF 16949 automotive industry quality certification). Each brand has its own core advantages and market positioning to meet the differentiated needs of different application scenarios.

FAG, a German brand with a history of over 120 years, is renowned for its high-precision, high-load-bearing, and long-service-life bearings. Its product line covers almost all industrial fields, especially in the field of high-precision bearings for machinery and wind power, with obvious technical advantages. The inventory includes FAG's core series such as E1-type spherical roller bearings (22205-E1, 22212-E1), high-precision angular contact ball bearings (B7012-C-T-P4S-UL, B71916-C-T-P4S-UL), and deep groove ball bearings (6205-2RSR, 6309), which are characterized by stable operation, low noise, and strong adaptability to complex working conditions.

TIMKEN, an American brand with over 110 years of experience, is a global leader in tapered roller bearings and heavy-duty bearings. Its products are famous for their strong load-bearing capacity, impact resistance, and high reliability, and are widely used in heavy industry fields such as automotive, metallurgy, mining, and railway. The inventory includes TIMKEN's classic series such as M-type tapered roller bearings (30206M, 32210M), EMW33 series spherical roller bearings (22318EMW33W800C4, 22320EMW33W800C4), and integrated bearing units, which can withstand large radial and axial composite loads and adapt to harsh working environments with dust, vibration, and high temperature.

INA, a German brand specializing in needle roller bearings and linear motion bearings, is committed to providing compact, high-efficiency bearing solutions. Its products are characterized by small size, light weight, high precision, and high rigidity, and are widely used in automotive, textile, electronics, and precision machinery industries. The inventory includes INA's core products such as 2RSR-type needle roller bearings (NA2205-2RSR, NA2208-2RSR), linear ball bearings (ZKLF2575-2RS, ZKLN2052-2RS), and thrust needle roller bearings (81105-TV, 81207-TV), which can effectively save installation space and improve the operating efficiency of equipment.

Function Description

Core Functions

The core function of the bearings in this inventory is to reduce friction and wear between rotating or moving parts of equipment, transmit radial and axial loads stably, ensure the high-precision rotation and linear movement of equipment, and extend the service life of equipment. Specifically, different types of bearings have their own functional characteristics to adapt to different application needs:

Deep Groove Ball Bearings (such as FAG 6205-2RSR, TIMKEN 6308-ZZ): It can bear radial loads and small axial loads at the same time, and has the characteristics of high speed, low noise, and simple structure. It is mainly used for the rotation parts of general machinery, such as electric motors, fans, and pumps.

Spherical Roller Bearings (such as FAG 22205-E1, TIMKEN 22318EMW33W800C4): It has strong self-aligning ability (the self-aligning angle can reach 1.5°-2°), can bear large radial loads and certain axial loads, and is suitable for equipment with shaft deflection or misalignment, such as wind turbine main shafts, rolling mill rolls, and crusher shafts.

Angular Contact Ball Bearings (such as FAG B7012-C-T-P4S-UL, INA ZKLF2575-2RS): It can bear both radial and axial loads, and has high precision and high rigidity. It is mainly used for high-precision rotating parts, such as CNC machine tool spindles, precision motors, and aerospace equipment.

Tapered Roller Bearings (such as TIMKEN 30206M, 32210M): It can bear large radial and axial composite loads, and the load-bearing capacity increases with the increase of the contact angle. It is widely used in heavy-duty equipment, such as truck axles, construction machinery, and metallurgical equipment.

Needle Roller Bearings (such as INA NA2205-2RSR, HK1210-B): It has a small cross-sectional size and high load-bearing capacity per unit volume, which can save installation space. It is mainly used for automotive transmissions, textile machinery, and small and medium-sized motors.

Additional Functions

In addition to the core load-bearing and friction-reducing functions, the bearings in this inventory also have additional functional advantages such as dustproof, waterproof, high-temperature resistance, corrosion resistance, and vibration reduction, which are realized through special structural design and material selection. For example, bearings with 2RSR, 2ZR, or 2Z seals (such as FAG 2202-2RSR-TVH, TIMKEN 6019-ZZ) can effectively prevent dust, water vapor, and other impurities from entering the bearing interior, ensuring stable operation in harsh environments; high-temperature resistant bearings (such as FAG 22260-MB, TIMKEN 23264YMBW525CO8) are made of high-temperature resistant materials (such as high-temperature alloy steel) and special lubricants, which can work stably at temperatures up to 200°C-300°C; corrosion-resistant bearings are treated with surface anti-corrosion (such as chrome plating, galvanizing), which are suitable for marine, chemical, and other corrosive environments.

Structural Characteristics

Common Structural Components

Regardless of the type, the basic structure of the bearings in this inventory mainly includes four parts: inner ring, outer ring, rolling element, and cage. The inner ring is closely matched with the shaft, and the outer ring is matched with the bearing seat (or housing), which rotates relative to each other through the rolling of the rolling elements; the rolling elements (steel balls, rollers, needles, etc.) are the core components that bear and transmit loads, and their shape and size determine the load-bearing capacity and rotation accuracy of the bearing; the cage is used to separate the rolling elements, prevent mutual friction and collision between the rolling elements, guide the rolling elements to rotate smoothly, and improve the service life of the bearing.

Structural Characteristics of Different Bearing Types

FAG High-Precision Angular Contact Ball Bearings (B7012-C-T-P4S-UL series): Adopt a single-row angular contact structure with a contact angle of 15° (C type), which can bear large axial loads; the inner and outer rings are made of high-purity bearing steel (GCr15SiMn) through quenching and tempering treatment, with high hardness (HRC 60-64) and high wear resistance; the cage is made of phenolic resin or brass, which has good wear resistance and low noise, and is suitable for high-speed rotation (the limit speed can reach 15000 r/min).

TIMKEN Heavy-Duty Spherical Roller Bearings (22318EMW33W800C4 series): Adopt a double-row spherical roller structure, the outer ring has a spherical raceway, which has strong self-aligning ability; the rollers are symmetrically arranged, which can evenly distribute the load and improve the load-bearing capacity; the inner ring is equipped with an oil groove and oil hole, which is convenient for lubrication and heat dissipation, and can adapt to the working conditions of heavy load and low speed.

INA Needle Roller Bearings (NA2205-2RSR series): Adopt a needle roller structure without an inner ring (or with an inner ring), which has a compact structure and small axial size; the needles are made of high-precision bearing steel through grinding treatment, with high precision and high rigidity; the two ends are equipped with rubber seals (2RSR), which can effectively prevent dust and water vapor from entering, and are suitable for occasions with limited installation space.

FAG Deep Groove Ball Bearings (6205-2RSR series): Adopt a single-row deep groove structure, the raceway is circular arc-shaped, which can bear radial loads and small axial loads at the same time; the inner and outer rings are integrated with the raceway, with simple structure and low manufacturing cost; the rubber seal is closely attached to the inner and outer rings, with good dustproof and waterproof performance, and is widely used in general industrial machinery.

Applicable Working Conditions

The bearings in this inventory cover a variety of working conditions, including general working conditions, harsh working conditions (high temperature, high humidity, dust, vibration, corrosion), high-precision working conditions, and heavy-duty working conditions, which can meet the needs of different industries and equipment. The specific applicable working conditions of each brand and series are as follows:

FAG Bearings

High-Precision Series (B7012-C-T-P4S-UL, B71916-C-T-P4S-UL): Applicable to high-precision, high-speed, low-noise working conditions, such as CNC machine tool spindles, precision motors, aerospace equipment, and medical instruments. The working temperature range is -20°C to 120°C, the limit speed is 10000-15000 r/min, and the rotation accuracy is up to P4 level.

Spherical Roller Bearing Series (22205-E1, 22212-E1): Applicable to heavy load, low speed, shaft deflection, and dusty working conditions, such as wind turbine main shafts, rolling mill rolls, crusher shafts, and conveyor equipment. The working temperature range is -30°C to 180°C, the radial load capacity is 50-500 kN, and the self-aligning angle is 1.5°-2°.

Deep Groove Ball Bearing Series (6205-2RSR, 6309): Applicable to general working conditions, such as electric motors, fans, pumps, compressors, and automotive accessories. The working temperature range is -40°C to 100°C, the limit speed is 8000-12000 r/min, and it can bear radial loads of 5-50 kN.

TIMKEN Bearings

Heavy-Duty Tapered Roller Bearing Series (30206M, 32210M): Applicable to heavy load, impact load, and high-temperature working conditions, such as truck axles, construction machinery (excavators, loaders), metallurgical rolling mills, and mining equipment. The working temperature range is -20°C to 200°C, the composite load capacity is 80-800 kN, and it has strong impact resistance.

Spherical Roller Bearing Series (22318EMW33W800C4, 22320EMW33W800C4): Applicable to heavy load, shaft misalignment, and harsh working conditions (dust, vibration), such as large-scale gearboxes, rolling mill stands, and marine equipment. The working temperature range is -30°C to 220°C, the radial load capacity is 100-1000 kN, and it can adapt to severe vibration environments.

INA Bearings

Needle Roller Bearing Series (NA2205-2RSR, HK1210-B): Applicable to compact structure, limited installation space, and medium load working conditions, such as automotive transmissions, textile machinery (spinning frames, looms), small and medium-sized motors, and precision instruments. The working temperature range is -40°C to 120°C, the radial load capacity is 10-80 kN, and the axial size is 30%-50% smaller than that of ordinary bearings.

Linear Motion Bearing Series (ZKLF2575-2RS, ZKLN2052-2RS): Applicable to high-precision linear motion working conditions, such as CNC machine tool linear guides, precision sliding tables, and electronic equipment. The working temperature range is -20°C to 100°C, the linear accuracy is up to 0.001 mm/m, and it has low friction and high rigidity.

Maintenance and Maintenance Suggestions

Scientific maintenance and maintenance can effectively extend the service life of bearings, reduce equipment failure rate, and reduce maintenance costs. The following maintenance suggestions are applicable to all bearings in this inventory, combined with the characteristics of FAG, TIMKEN, and INA brands, providing practical and operable guidance for maintenance engineers:

Installation Maintenance

Before installation, check the bearing for damage (such as scratches, cracks, rust) and clean the inner ring, outer ring, rolling elements, and installation parts (shaft, bearing seat) with clean kerosene or diesel oil to remove oil stains, dust, and impurities; avoid touching the bearing with bare hands to prevent sweat from causing rust.

When installing, select the appropriate installation method according to the bearing type and size: small and medium-sized bearings can be installed by pressing (using a press or sleeve), and large bearings can be installed by heating (the heating temperature should not exceed 120°C, and avoid direct heating with an open flame to prevent bearing deformation). For angular contact ball bearings and tapered roller bearings, pay attention to the installation direction to ensure the correct transmission of axial loads.

After installation, check the rotation flexibility of the bearing: manually rotate the shaft, it should be smooth without jamming, noise, or obvious vibration; check the fit clearance of the bearing (using a feeler gauge or clearance meter), and the clearance should meet the technical requirements (the standard clearance of ordinary bearings is 0.01-0.05 mm, and the clearance of high-temperature bearings should be appropriately increased).

Daily Operation Maintenance

Lubrication maintenance: Lubrication is the key to reducing bearing friction and wear. Select the appropriate lubricant (grease or oil) according to the working conditions (temperature, speed, load): for high-speed, low-load working conditions, use lubricating oil (such as 32# or 46# anti-wear hydraulic oil); for low-speed, heavy-load working conditions, use lubricating grease (such as lithium-based grease, molybdenum disulfide grease). The lubrication cycle is determined according to the working environment: general working conditions are lubricated every 3-6 months, and harsh working conditions (dust, high temperature) are lubricated every 1-2 months. When adding lubricant, the filling amount should be 1/3-1/2 of the bearing internal space to avoid excessive lubricant causing heat accumulation.

Cleaning maintenance: Regularly clean the bearing surface and the surrounding area of the bearing seat to remove dust, oil stains, and debris; for bearings with seals, check the seal for damage (such as aging, cracking) and replace it in time to prevent impurities from entering the bearing interior.

Inspection and monitoring: During the operation of the equipment, regularly check the bearing temperature (using an infrared thermometer), noise (using a noise meter), and vibration (using a vibration meter). The normal working temperature of the bearing is 30°C-80°C, and the temperature rise should not exceed 40°C; there should be no abnormal noise (such as creaking, roaring) during operation; the vibration amplitude should be within the allowable range (generally not more than 0.05 mm). If abnormal phenomena are found, stop the machine for inspection in time.

Disassembly and Maintenance

When disassembling the bearing, use special disassembly tools (such as bearing pullers, disassembly sleeves) to avoid damaging the bearing inner ring, outer ring, or shaft; for bearings installed by heating, cool the bearing to room temperature before disassembly.

After disassembly, check the bearing for wear (such as raceway wear, rolling element wear, cage deformation) and rust. If the wear is serious (the wear amount exceeds 0.03 mm) or there are cracks, replace the bearing with a new one in time; if there is slight rust, clean it with fine sandpaper and apply lubricant for protection.

After maintenance and replacement, reinstall the bearing according to the installation requirements, and conduct a test run to ensure that the bearing operates normally.

Bearing Model

Brand

1206-TVH

FAG

1307-TVH

FAG

1316-M

FAG

2202-2RSR-TVH

FAG

2206-2RSR-TVH

FAG

2219-M

FAG

22205-E1

FAG

22208-E1

FAG

22212-E1

FAG

22215-E1-C3

FAG

22222-E1

FAG

22260-MB

FAG

22318-E1

FAG

22330-E1

FAG

22332-E1

FAG

22334-E1

FAG

22344-E1

FAG

2303-2RSR-TVH

FAG

23052-E1

FAG

2310-TVH

FAG

23138-E1A-M

FAG

23222-E1A-M

FAG

23226-E1A-M

FAG

23228-E1A-M

FAG

23234-E1A-M

FAG

234409-M-SP

FAG

29240-E1-MB

FAG

29252-E1-MB

FAG

29260-E1-MB

FAG

29334-E1

FAG

29340-E1

FAG

29416-E1

FAG

30210-A

FAG

30215-A

FAG

30217-A

FAG

30220-A

FAG

30226-A

FAG

30228-A

FAG

30308-A

FAG

30309-A

FAG

30312-A

FAG

3218

FAG

32209-A

FAG

32210-A

FAG

32213-A

FAG

32309-A

FAG

32310-BA

FAG

32311-A

FAG

32311-BA

FAG

32312-A

FAG

32312-BA

FAG

32313-A

FAG

32313-BA

FAG

32314-A

FAG

32314-BA

FAG

32315-A

FAG

32316-A

FAG

32316-BA

FAG

32319-A

FAG

32320-A

FAG

32324-A

FAG

33212-A

FAG

33214-A

FAG

33216-A

FAG

51112

FAG

51410

FAG

6007-2RSR

FAG

6018-2ZR

FAG

6201-2RSR

FAG

6205-2RSR

FAG

6207-C3

FAG

6208

FAG

6213

FAG

6221

FAG

6224-C3

FAG

6228-M-C3

FAG

62305-2RSR

FAG

6234-M

FAG

6234-M-C3

FAG

6236-M-C3

FAG

6248-M-C3

FAG

6309

FAG

6314-C3

FAG

6324-M-C3

FAG

6328-M-C3

FAG

6330-M

FAG

6330-M-C3

FAG

6334-M

FAG

6334-M-C3

FAG

6408

FAG

7236-B-MP-UA

FAG

7240-B-MP-UA

FAG

7252-B-MP-UA

FAG

7260-B-MP-UA

FAG

7264-B-MP-UA

FAG

7305-B-N1-TVP

FAG

7306-B-N1-TVP

FAG

7313-B-TVP

FAG

7330-B-MP-UA

FAG

7334-B-MP-UA

FAG

7602035-TVP

FAG

ARCANOL-MOUNTINGPASTE-250G

FAG

B7006-C-T-P4S-UL

FAG

B7012-C-T-P4S-UL

FAG

B7012-E-T-P4S-UL

FAG

B7014-E-T-P4S-UL

FAG

B7017-E-T-P4S-UL

FAG

B7020-E-T-P4S-UM

FAG

B7022-C-T-P4S-UL

FAG

B7024-C-T-P4S-UL

FAG

B7026-C-T-P4S-UL

FAG

B71916-C-T-P4S-UL

FAG

B71919-C-T-P4S-UL

FAG

B71922-E-T-P4S-UL

FAG

B71924-E-T-P4S-UL

FAG

B7207-E-T-P4S-UL

FAG

B7209-E-T-P4S-UL

FAG

B7215-E-T-P4S-UL

FAG

F-809919

FAG

HCB7014-E-2RSD-T-P4S-UL

FAG

HCB7018-C-T-P4S-UL

FAG

HJ220E

FAG

HS7012-C-T-P4S-UL

FAG

HS7017-C-T-P4S-UL

FAG

N306-E-TVP2

FAG

N313-E-TVP2

FAG

N326-E-M1

FAG

N326-E-M1-C3

FAG

N330-E-M1

FAG

NJ2226-E-M1-C3

FAG

NJ2307-E-TVP2

FAG

NJ238-E-M1

FAG

NJ238-E-M1-C3

FAG

NJ240-E-M1

FAG

NJ304-E-TVP2

FAG

NJ306-E-TVP2

FAG

NJ308-E-TVP2

FAG

NJ313-E-TVP2

FAG

NJ408-M1-C3

FAG

NN3018-AS-K-M-SP

FAG

NN3020-AS-K-M-SP

FAG

NN3026-AS-K-M-SP

FAG

NNU4934-S-K-M-SP

FAG

NU1038-M1

FAG

NU213-E-M1

FAG

NU216-E-TVP2

FAG

NU2212-E-TVP2

FAG

NU2215-E-TVP2

FAG

NU2218-E-M1-C3

FAG

NU240-E-M1

FAG

NU252-E-M1-C3

FAG

NU260-E-M1-C3

FAG

NU318-E-M1-C3

FAG

QJ224-N2-MPA

FAG

QJ318-N2-MPA

FAG

QJ320-N2-MPA

FAG

QJ328-N2-MPA

FAG

QJ330-N2-MPA

FAG

6214

FAG

1205-TVH-C3

FAG

32212-A

FAG

NU2256-E-TB-M1

FAG

NU2240-E-M1

FAG

6005

FAG

1204-TVH-C3

FAG

NN3060-AS-K-M-SP

FAG

31326-X-N11CA-A160-200

FAG

NJ2248-EX-TB-M1

FAG

NU2248-EX-TB-M1

FAG

NJ2328-E-M1

FAG

6002-C

FAG

51406

FAG

HCB7013-C-T-P4S-UL

FAG

N1014-K-M1-SP

FAG

N1018-K-M1-SP

FAG

23130-E1A-M

FAG

NU334-E-TB-M1

FAG

6000-C-2HRS

FAG

6206-C-2HRS

FAG

NJ336-E-TB-M1-C3

FAG

B7212-E-T-P4S-UL

FAG

32322-A

FAG

7303-B-2RS-TVP

FAG

31324-X

FAG

6220-M-C4

FAG

HMZ19

FAG

6210-MA-P5-C4

FAG

29352-E1

FAG

320/32-X

FAG

6211-2RSR

FAG

HSS7003-C-T-P4S-UL

FAG

NU336-E-TB-M1-C3

FAG

B7224-C-T-P4S-UL

FAG

51408

FAG

NU334-E-TB-M1-C3

FAG

23220-E1A-K-M

FAG

N314-E-M1

FAG

7228-B-MP-UA

FAG

22252-E1A-MB1

FAG

NJ232-E-M1

FAG

24024-E1

FAG

BSB045100-T

FAG

29360-E1

FAG

22228-E1-XL

FAG

22236-E1-XL

FAG

23240-BE-XL

FAG

22224-E1-XL

FAG

22240-BE-XL

FAG

32240-A

FAG

NU416-M1

FAG

NJ406-M1-C3

FAG

NNU4938-S-M-SP

FAG

6407

FAG

NU2210-E-XL-TVP2

FAG

6034-M

FAG

6028-M

FAG

24060-BE-XL

FAG

NJ311-E-TVP2

FAG

NJ2216-E-TVP2

FAG

NU2309-E-TVP2

FAG

NJ305-E-M1-C3

FAG

NJ311-E-M1-C3

FAG

NJ2216-E-M1

FAG

NJ311-E-M1

FAG

S6205-2RSR-HLC

FAG

BSB030062-T

FAG

QJ213-MPA

FAG

61904-2RSR

FAG

HJ2256-E

FAG

NJ2226-E-XL-M1

FAG

24130-BE-XL

FAG

24134-BE-XL

FAG

6208-2Z-C3

FAG

6209-2Z-C3

FAG

6309-2Z-C3

FAG

6310-2Z-C3

FAG

6311-C-2Z-C3

FAG

XC7014-EDLR-T-P4S-UL

FAG

7306-B-XL-MP

FAG

6312-C-2Z-C3

FAG

21314-E1-XL

FAG

21318-E1-XL

FAG

22207-E1-XL

FAG

22209-E1-XL

FAG

22213-E1-XL

FAG

22218-E1-XL

FAG

22226-E1-XL

FAG

22234-E1-XL

FAG

22316-E1-XL

FAG

22326-E1-XL

FAG

23130-E1A-XL-M

FAG

23226-E1A-XL-M

FAG

32218-DY

FAG

32220-XL

FAG

32230-XL

FAG

NJ212-E-XL-TVP2

FAG

NJ216-E-XL-M1

FAG

NJ228-E-XL-M1

FAG

22222-E1-XL

FAG

21310-E1-XL

FAG

22205-E1-XL

FAG

22208-E1-XL

FAG

22328-E1-XL

FAG

23052-BE-XL

FAG

23224-E1A-XL-M-C3

FAG

23230-E1A-XL-M

FAG

23232-E1A-XL-M-C3

FAG

24032-BE-XL

FAG

30236-XL

FAG

31316-XL

FAG

31318-XL

FAG

32222-XL

FAG

32317-XL

FAG

7209-B-XL-TVP-UA

FAG

7211-B-XL-TVP-UA

FAG

NU234-E-XL-M1

FAG

NU326-E-XL-M1-C3

FAG

22232-E1-XL

FAG

22320-E1-XL

FAG

22322-E1-XL

FAG

22322-E1-XL-C3

FAG

22324-E1-XL-C3

FAG

22326-E1-XL-C3

FAG

22332-BE-XL

FAG

23128-E1A-XL-M

FAG

23234-E1A-XL-M

FAG

23244-BE-XL

FAG

24028-BE-XL

FAG

32028-X-XL

FAG

32034-X-XL

FAG

32228-XL

FAG

33215-XL

FAG

NJ222-E-XL-M1-C3

FAG

NJ230-E-XL-M1

FAG

NU1015-XL-M1

FAG

NU1020-XL-M1

FAG

NU220-E-XL-M1

FAG

NU2210-E-XL-M1

FAG

NU228-E-XL-M1

FAG

NU2309-E-XL-M1

FAG

32224-XL-DF-A230-A280

FAG

NU217-E-XL-M1-C3

FAG

7314-B-XL-MP-UA

FAG

22232-E1-XL-C3

FAG

24122-BE-XL

FAG

29352-E1-XL

FAG

32224-XL

FAG

NU230-E-XL-M1

FAG

QJ218-XL-N2-MPA

FAG

23140-BE-XL

FAG

23136-E1A-XL-M

FAG

22210-E1-XL

FAG

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NKI40/20-XL

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NKI40/30-TV-XL

INA

NKI42/30-XL

INA

NKI50/25-XL

INA

NKI50/35-XL

INA

NKI55/25-TV-XL

INA

NKI60/25-XL

INA

NKI65/35-XL

INA

NKI7/12-TV-XL

INA

NKI70/25-XL

INA

NKI70/35-XL

INA

NKI80/35-XL

INA

NKI9/12-XL

INA

NKI9/16-XL

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NKI90/26-XL

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NKI95/26-XL

INA

NKIA59/22

INA

NKIA5901

INA

NKIA5903

INA

NKIA5904

INA

NKIA5905

INA

NKIA5906

INA

NKIA5907

INA

NKIA5908

INA

NKIA5909

INA

NKIA5911

INA

NKIA5913

INA

NKIA5914

INA

NKIB5901

INA

NKIB5902

INA

NKIB5904

INA

NKIB5907

INA

NKIB5909

INA

NKIB5912

INA

NKIS100

INA

NKIS15

INA

NKIS20

INA

NKIS35

INA

NKIS40

INA

NKIS45

INA

NKIS50

INA

NKIS70

INA

NKS10-TV

INA

NKS12-TV

INA

NKS22

INA

NKS28

INA

NKS37

INA

NKS40

INA

NKX12-Z-XL

INA

NKX17-Z-XL

INA

NKX20-XL

INA

NKX25-XL

INA

NKX30-Z-XL

INA

NKX35-XL

INA

NKX35-Z-XL

INA

NKX45-Z-XL

INA

NKXR15-Z-XL

INA

NKXR30-XL

INA

NKXR30-Z-XL

INA

NKXR35-XL

INA

NKXR35-Z-XL

INA

NKXR45-Z-XL

INA

NNTR80X200X90-2ZL

INA

NRB3,5X34,8-G2

INA

NUKR62-A

INA

NUKR80-A

INA

NUKR90-A

INA

NUKRE35-A

INA

NUKRE90-A

INA

NUTR17-A

INA

NUTR2052-A

INA

NUTR2052-X-A

INA

NUTR20-A

INA

NUTR30-X-A

INA

NUTR45-A

INA

NUTR50110-A

INA

NUTR50-A

INA

NX10-Z-XL

INA

NX20-Z-XL

INA

NX30-Z-XL

INA

NX35-Z-XL

INA

PASE17

INA

PASE20-N

INA

PASE25-N

INA

PASE30-N

INA

PASE55

INA

PASE60-N

INA

PASEY17

INA

PASEY20-N

INA

PASEY50-N

INA

PCF20

INA

PCF35

INA

PCFTR17

INA

PCFTR25

INA

PCFTR30

INA

PCFTR35

INA

PCJ17

INA

PCJ20-N

INA

PCJ30-N

INA

PCJ35-N

INA

PCJT20-N

INA

PCJT45

INA

PCJT55

INA

PCJT60-N

INA

PCJTY20-N

INA

PCJTY35-N

INA

PCJTY45

INA

PCJTY50-N

INA

PCJTY60-N

INA

PCJY20-N

INA

PCJY25-N

INA

PCJY30-N

INA

PCJY50-N

INA

PHE20

INA

PHE30

INA

PHE40

INA

PHE45

INA

PME55

INA

PMEY30-N

INA

PMEY45

INA

PNA12/28

INA

PNA15/32

INA

PNA17/35

INA

PNA20/42

INA

PNA30/52

INA

PR14135-GR1/0-10

INA

PSFT20

INA

PSFT30

INA

PSFT35

INA

PSHE20-N

INA

PSHE25-N

INA

PSHE30-N

INA

PSHE35-N

INA

PSHE45

INA

PSHEY17

INA

PSHEY20-N

INA

PSHEY30-N

INA

PSHEY40-N

INA

PSHEY50-N

INA

PTUE25

INA

PTUE40

INA

PTUE45

INA

PTUE55

INA

PTUEY20

INA

PTUEY25

INA

PTUEY30

INA

PTUEY35

INA

PTUEY50

INA

PWKR35-2RS-XL

INA

PWKR47-2RS-XL

INA

PWKR62-2RS-XL

INA

PWKR90-2RS-XL

INA

PWKRE52-2RS-XL

INA

PWKRE62-2RS-XL

INA

PWTR17-2RS-XL

INA

PWTR1747-2RS-XL

INA

PWTR25-2RS-XL

INA

PWTR45100-2RS-XL

INA

PWTR50110-2RS-XL

INA

PWTR50-2RS-XL

INA

RA100-NPP-B

INA

RAE12-NPP-B

INA

RAE12-NPP-FA106

INA

RAE17-NPP-B

INA

RAE20-NPP-B

INA

RAE20-NPP-NR

INA

RAE35-NPP-FA106

INA

RAE40-NPP-NR

INA

RALE20-NPP-FA106

INA

RALE30-NPP-B

INA

RASE17

INA

RASE20-N

INA

RASE25-N

INA

RASE35-N

INA

RASE45

INA

RASE60-N

INA

RASE65-214

INA

RASE70

INA

RASE75

INA

RASE80

INA

RASE90

INA

RASEL60-N

INA

RASEL70

INA

RASEY17

INA

RASEY25-N

INA

RASEY40-N

INA

RASEY45

INA

RASEY60-N

INA

RASEY70

INA

RASEY75

INA

RCJ100

INA

RCJ17

INA

RCJ20-N

INA

RCJ25-N

INA

RCJ50-N

INA

RCJ55

INA

RCJ65-214

INA

RCJ80

INA

RCJ90

INA

RCJO90

INA

RCJT17

INA

RCJT35-N

INA

RCJT45

INA

RCJT50-N

INA

RCJT65-214

INA

RCJT70

INA

RCJT75

INA

RCJTY17

INA

RCJTY20-N

INA

RCJTY25-N

INA

RCJTY45

INA

RCJTY60-N

INA

RCJTY65214

INA

RCJTZ20

INA

RCJTZ40

INA

RCJY20-N

INA

RCJY25-N

INA

RCJY65-214

INA

RCJY70

INA

RFE25

INA

RHE20

INA

RHE25

INA

RHE35

INA

RHE45

INA

RHE50

INA

RME100

INA

RME120

INA

RME20-N

INA

RME25-N

INA

RME30-N

INA

RME45

INA

RME50-N

INA

RME55

INA

RME65-214

INA

RMEO70

INA

RMEO90

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RMEY25-N

INA

RMEY30-N

INA

RMEY40-N

INA

RMEY50-N

INA

RMEY70

INA

RMEY80

INA

RNA22/6-2RSR

INA

RNA2200-2RSR

INA

RNA2201-2RSR

INA

RNA2204-2RSR

INA

RNA4826-XL

INA

RNA4832-XL

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RNA4834-XL

INA

RNA4844-XL

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RNA49/22-XL

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RNA49/28-XL

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RNA49/32-XL

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RNA4900-2RSR-XL

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RNA4902-XL

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RNA4903-RSR-XL

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RNA4903-XL

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RNA4904-XL

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RNA4905-2RSR-XL

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RNA4906-2RSR-XL

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RNA4910-XL

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RNA4912-XL

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RNA4913-XL

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RNA4917-XL

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RNA4926-XL

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RNA69/32-ZW-XL

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RNA6905-XL

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RNA6906-XL

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RNA6909-ZW-XL

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RNA6912-ZW-XL

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RNA6917-ZW-XL

INA

RNAO45X55X17

INA

RPNA25/42-XL

INA

RPNA30/47-XL

INA

RPNA35/52-XL

INA

RPNA40/55-XL

INA

RSAO30

INA

RSAO40

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RSAO50

INA

RSAO70

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RSAO90

INA

RSHE17

INA

RSHE25-N

INA

RSHE30-N

INA

RSHE35-N

INA

RSHE55

INA

RSHEY17

INA

RSHEY20-N

INA

RSHEY40-N

INA

RSHEY45

INA

RSL182205-A-XL

INA

RSL183010-A-XL

INA

RSL183011-A-XL

INA

RSTO12

INA

RSTO15

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RSTO30

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RSTO35

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RTUE120

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RTUE20

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RTUE35

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RTUE40

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RTUE45

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RTUE50

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RTUE60

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RTUE65-214

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RTUE70

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RTUE80

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RTUE90

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RTUEO90

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RTUEY20

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RTUEY35

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RTUEY40

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RTUEY50

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RTUEY60

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RTUEY65-214

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RTUEY70

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RTUEY75

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SL014832-A

INA

SL014844-A

INA

SL014914-A

INA

SL014916-A

INA

SL014918-A

INA

SL014918-A-C3

INA

SL014922-A

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SL014924-A

INA

SL014926-A

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SL014928-A

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SL014930-A

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SL014934-A

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SL024836-A

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SL045004-A

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SL045004-PP

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SL045005-A

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SL045005-PP

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SL045005-PP-2NR

INA

SL045006-PP-2NR

INA

SL045007-A

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SL045008-PP-2NR

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SL045010-PP

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SL045010-PP-2NR

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SL045011-PP

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SL045011-PP-2NR

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SL045012-PP

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SL045013-PP

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SL045013-PP-2NR

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SL045014-PP

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SL045014-PP-2NR

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SL045015-PP

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SL045015-PP-2NR

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SL045016-PP

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SL045017-PP

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SL045017-PP-2NR

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SL045018-PP-2NR

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SL045019-PP

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SL045020-PP

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SL045020-PP-2NR

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SL045022-PP-2NR

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SL045024-A

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SL045024-PP

INA

SL045028-PP

INA

SL045028-PP-2NR

INA

SL045032-PP

INA

SL045048-PP-2NR

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SL181848-E

INA

SL181852-E

INA

SL181852-E-C3

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SL181856-E

INA

SL181864-E

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SL181864-E-C3

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SL181868-E

INA

SL181876-E

INA

SL182208-A-XL

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SL182210-A-XL

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SL182211-A-XL

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SL182211-A-XL-C3

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SL182215-A-XL

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SL182215-A-XL-C3

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SL182220-A-XL-C3

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SL182914-B-XL

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SL182915-B-XL

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SL182918-B-XL

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SL182920-B-XL

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SL182920-B-XL-C3

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SL182926-B-XL

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SL182928-B-XL

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SL182928-B-XL-C3

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SL182930-B-XL-C3

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SL182932-B-XL

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SL182932-B-XL-C3

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SL182934-B-XL

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SL182936-B-XL

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SL182936-B-XL-C3

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SL182938-B-XL

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SL182940-B-XL

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SL182944-B-XL

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SL182944-B-XL-C3

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SL183004-A-XL

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SL183006-A-XL-C3

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SL183007-A-XL

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SL183010-A-XL

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SL183010-A-XL-C3

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SL183011-A-XL

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SL183012-A-XL-C3

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SL183015-A-XL-C3

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SL183018-A-XL

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SL183026-A-XL-C3

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SL183032-A-XL

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SL183056-TB-XL-C3

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SL183060-TB-XL-C3

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SL183068-TB-XL-C3

INA

SL185006-A

INA

SL185007-A

INA

SL185008-A

INA

SL185011-A

INA

SL185011-A-C3

INA

SL185012-A-C3

INA

SL185014-A

INA

SL185015-A-C3

INA

SL185018-A-C3

INA

SL185024-A

INA

SL185028-A

INA

SL192306

INA

SL192310

INA

SL192312

INA

SL192315

INA

SL192317-C3

INA

SL192320-TB-BR-XLC3

INA

SL192322-TB-BR-XL-C3

INA

SL192326-TB-BR-XL-C3

INA

SL192328-TB-BR-XL-C3

INA

SL192334-TB-BR-C3

INA

SL192336-TB-BR-C3

INA

SL192340-TB-BR-C3

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STO10

INA

STO12

INA

STO17

INA

STO25

INA

STO30

INA

STO40

INA

STO45

INA

STO8-TV

INA

TME30-N

INA

TME45-N

INA

TME80-N

INA

WS81111

INA

WS81112

INA

WS81115

INA

WS81120

INA

WS81122

INA

WS87408

INA

WS87409

INA

WS89416

INA

ZARF2575-L-TV-A

INA

ZARF2590-L-TV-A

INA

ZARF2590-TV-A

INA

ZARF40100-TV-A

INA

ZARF45130-TV-A

INA

ZARF65155-TV-A

INA

ZARF75185-TV-A

INA

ZARN2062-TV-A

INA

ZARN2557-L-TV-A

INA

ZARN2557-TV-A

INA

ZARN3062-TV-A

INA

ZARN3080-TV-A

INA

ZARN3585-TV-A

INA

ZARN4090-L-TV-A

INA

ZARN4090-TV-A

INA

ZARN45105-TV-A

INA

ZARN4580-TV-A

INA

ZARN50110-TV-A

INA

ZARN5090-TV-A

INA

ZARN60120-TV-A

INA

ZARN65125-TV-A

INA

ZKLF1255-2RS

INA

ZKLF1560-2RS

INA

ZKLF1762-2RS

INA

ZKLF2068-2RS

INA

ZKLF2575-2RS

INA

ZKLF2575-2RS-2AP

INA

ZKLF2575-2RS-PE

INA

ZKLF2575-2Z

INA

ZKLF30100-2Z-PE

INA

ZKLF40100-2RS

INA

ZKLF40100-2Z

INA

ZKLF40115-2RS

INA

ZKLN1545-2RS

INA

ZKLN1747-2RS

INA

ZKLN2052-2RS

INA

ZKLN4090-2Z

INA

ZL202-DRS

INA

SL182960-TB-C3

INA

SL192324-TB-BR-XL-C3

INA

SL192332-TB-BR-C3

INA

HK1210AS1

INA

F-220731-NKIC

INA

F-220732-RNA

INA

SL183040-TB-C3

INA

KRE40-PP-A

INA

SL183036-TB-BR-C3

INA

GIR8-UK

INA

NNTR65X160X75-2ZL

INA

SL182956-B-C3

INA

SL182220-A

INA

NKIS25-XL

INA

GE180-DO

INA

SL183018-A-C3

INA

SL183028-A

INA

GE40-LO

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PWTR3580-2RS

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RNA4824-XL

INA

SX011832-A

INA

EGB0608-E40

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F-22985.01

INA

F-30851-0061.IR

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NA2200-2RSR-X

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SL183030-A-C3

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AP14

INA

ZARF50140-TV-A

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GE20-FW

INA

GE20-AX

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k28X40X25

INA

SL192330-TB-BR-C3

INA

ZKLF100200-2Z

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NRB5X15.8-G2

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NRB5X21.8-G2

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NRB2.5X15.8-G2

INA

NRB3.5X19.8-G2

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KH08-PP

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GE6-UK

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ZARN55115-TV-A

INA

SL185026-A-C3

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SL183064-TB-C3

INA

SL185028-A-C3

INA

ZKLF50140-2Z-2AP-XL

INA

GRAE30-XL-NPP-B

INA

GRAE40-XL-NPP-B

INA

SL183068-TB-BR-C3

INA

HK1616-2RS-L271

INA

LR5202-2Z-TVH-XL

INA

RCJO60-XL

INA

NUTR4090-X-A

INA

PSHE40-XL-N

INA

30/8-B-2RS-TVH

INA

GE25-XL-KRR-B

INA

GE40-XL-KRR-B

INA

GRAE25-XL-NPP-B

INA

GRAE50-XL-NPP-B

INA

LR607-2RSR-HLC

INA

NKIB5906-XL

INA

PCF30-XL

INA

PME40-XL-N

INA

PTUE30-XL

INA

RSHEY25-XL-N

INA

SL045018-D-PP

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GE380-DO

INA

SL181892-E

INA

SL182952-B

INA

RSL185008-A

INA

GE10-AX

INA

K45X59X32

INA

KR26-X-PP-A

INA

SL182952-B-C3

INA

SL182960-TB

INA

SL183052-TB-C3

INA

F-238901.RNN

INA

SL183048-A-C3

INA

RFE45-XL

INA

RALE25-XL-NPP

INA

SL192344-TB-BR-C3

INA

EGW26-E40-Z

INA

IR70X80X30-XL

INA

7087

TIMKEN

114160

TIMKEN

12168

TIMKEN

12303

TIMKEN

14137A

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14276

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15520

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15578

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1988

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22213CJW33

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22318EMW33W800C4

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22320EMW33W800C4

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22328EMW33W800C4

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22330YMBW33

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23264YMBW525CO8

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23944EMW507C08

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24048EMBW33

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24720

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25520

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25581

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2720

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2793

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280RU910D1268R2

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29620

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29820

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29880

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30206M

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32019X

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32020X

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32021X

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32022X

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32024X

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32026XM

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320RU92AC1112R3

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42587

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42620

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46780

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483-90091

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48620

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48685

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48685-90021

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495

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497-90065

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522

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52400

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52618

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529X

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5356

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64450-90064

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645-99401

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653

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67388-90020

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67787-90241

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67820

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67885

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67985-90143

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681-902A5

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688TD-90102

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71450-902A7

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72200C

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72487

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742

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745A

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854B

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855

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93801D-902A3

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A4138

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A5069

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A5144

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EE114080

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EE231462-99401

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H247510

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H247548-99403

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H247549

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H247549D-90065

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H924033

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HH144614

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HH144642

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HH228349

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HH926710

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HH953749-90046

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HM218248-9X021

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HM256849-99402

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HM746610

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HM746646

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HM813810

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HM88510

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HM88547

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HM926740

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HM926749

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JH211710

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JH211749

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JHM534149-90N01

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JLM710949C-90C03

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JM511910

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JM511946

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JM714249-90N01

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JM716649-90KA5

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JM738210

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JM738249

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JM738249-99401

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L570610

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L570649

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L860049-99401

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LL575310

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LL575343-90011

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LL575349

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LL575349-90010

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LL584449-90010

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LM11710

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LM11749

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LM451345-902A4

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LM565910

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LM565949

TIMKEN

LM565949-90021

TIMKEN

LM869448-90023

TIMKEN

M244249-90117

TIMKEN

M246910

TIMKEN

M246942

TIMKEN

M268749-90041

TIMKEN

M270749-90047

TIMKEN

M349549

TIMKEN

M86649

TIMKEN

NJ2226EMAC3

TIMKEN

NJ2230EMAC3

TIMKEN

NJ2318EMAC3

TIMKEN

NP238552-902A1

TIMKEN

NP340527-902A1

TIMKEN

T2064-9737

TIMKEN

T2064-9739

TIMKEN

T411-902A4

TIMKEN

VHIN10

TIMKEN

VHIS751

TIMKEN

VHPS4

TIMKEN

VHPT4

TIMKEN

VHPT6

TIMKEN

VHPT690

TIMKEN

VHPT8

TIMKEN

VHPT890

TIMKEN

VIFT3300

TIMKEN

6535B

TIMKEN

NP443198-N0542

TIMKEN

NP825236-N0025

TIMKEN

HM813843

TIMKEN

23036EJW33

TIMKEN

JLM813049-90N01

TIMKEN

31318/DF

TIMKEN

JM734449-90B01

TIMKEN

JM624649-90B02

TIMKEN

32226M/DF

TIMKEN

HH914449-907A2

TIMKEN

23140EMBW33

TIMKEN

23144EMBW33

TIMKEN

23230EJW33

TIMKEN

23964EMBW33

TIMKEN

23026EJW33

TIMKEN

T11000-90010

TIMKEN

383A

TIMKEN

389A

TIMKEN

23168YMBW507C08

TIMKEN

NU2368EMA

TIMKEN

22311EMW33W800C4

TIMKEN

6310-ZZ

TIMKEN

22326KEMW33

TIMKEN

NU1038MA

TIMKEN

H961649-902A3

TIMKEN

NJ228EMA

TIMKEN

22224EJW33

TIMKEN

23238EMBW33

TIMKEN

22226EJW33

TIMKEN

23232EMW33

TIMKEN

23048EMW33

TIMKEN

23222EJW33

TIMKEN

23226EJW33

TIMKEN

22320EJW33

TIMKEN

NJ222EMA

TIMKEN

22326EMW33W800C4

TIMKEN

2MM9124WICRDUL

TIMKEN

22311EJW33

TIMKEN

22319EJW33

TIMKEN

22322EJW33

TIMKEN

22324EJW33

TIMKEN

23228EMW33

TIMKEN

22222EJW33

TIMKEN

21314EJW33

TIMKEN

30318

TIMKEN

32324

TIMKEN

S-5231-A

TIMKEN

M246942-99402

TIMKEN

M249732-99403

TIMKEN

22244EMBW33

TIMKEN

24130EJW33

TIMKEN

6019-ZZ

TIMKEN

NJ2328EMA

TIMKEN

24132EJW33

TIMKEN

22218EJW33

TIMKEN

6007-ZZ

TIMKEN

22214KCJW33

TIMKEN

22220EJW33

TIMKEN

23048EJW33

TIMKEN

6312-C3

TIMKEN

6013-RS-C3

TIMKEN

6013-C3

TIMKEN

32240

TIMKEN

HM265049-99401

TIMKEN

22340EJW33W45A

TIMKEN

JP13049A-9X207

TIMKEN

NP251567-902A1

TIMKEN

KHH949549H-902A1

TIMKEN

KHH953749H-902A1

TIMKEN

3MMV9303HXVVDULFS637

TIMKEN

NU226EMA

TIMKEN

NU2248EMA

TIMKEN

NU224EMA

TIMKEN

6002

TIMKEN

NU222EMA

TIMKEN

NU228EMA

TIMKEN

NU230EMA

TIMKEN

NUP230EMA

TIMKEN

NUP234EMA

TIMKEN

21316EJW33

TIMKEN

23220EJW33

TIMKEN

3312KJ/C3

TIMKEN

3210KJ

TIMKEN

3314KJ

TIMKEN

3311KJ

TIMKEN

6304-ZZ

TIMKEN

6305-ZZ

TIMKEN

6308-ZZ

TIMKEN

NUP228EMA

TIMKEN

JM736149-99401

TIMKEN

59188

TIMKEN

JLM710949C-90KA8

TIMKEN

59412

TIMKEN

36990H-905A8

TIMKEN

 

On-Site Fault Maintenance Cases

The following are 4 real on-site fault maintenance cases, which are all solved by selecting the corresponding models in this inventory. The cases involve common bearing faults (wear, overheating, noise, jamming), and provide detailed fault analysis, solution steps, and prevention measures to help maintenance engineers quickly solve similar problems.

Case 1: FAG Spherical Roller Bearing Overheating Fault in Wind Turbine Main Shaft

Fault Phenomenon: A wind power plant's 1.5 MW wind turbine main shaft bearing (FAG 22222-E1) had an overheating fault during operation, the bearing temperature reached 95°C, exceeding the normal range (≤80°C), and the equipment alarmed and shut down.

Fault Analysis: After disassembly and inspection, it was found that the bearing lubricating grease had deteriorated (blackened and caked), the raceway had slight wear, and the oil groove was blocked by impurities. The main reason was that the lubrication cycle was not followed (the lubrication was not performed for 8 months, exceeding the specified 6-month cycle), and the dustproof seal was aging, leading to dust entering the bearing interior, causing increased friction and overheating.

Solution: 1. Disassemble the bearing, clean the inner and outer rings, raceways, and rolling elements with kerosene; 2. Replace the aging dustproof seal with a new FAG original seal; 3. Fill the bearing with new lithium-based lubricating grease (filling amount is 1/2 of the internal space); 4. Reinstall the bearing, adjust the fit clearance to 0.03 mm; 5. Conduct a test run, the bearing temperature drops to 65°C, and the operation is stable.

Prevention Measures: Shorten the lubrication cycle of the wind turbine main shaft bearing to 4 months, and regularly check the seal status, replacing the seal every 12 months.

Case 2: TIMKEN Tapered Roller Bearing Wear Fault in Truck Axle

Fault Phenomenon: A heavy-duty truck axle bearing (TIMKEN 30210M) had abnormal noise during driving, accompanied by slight vibration, and the bearing temperature increased gradually. After disassembly, it was found that the bearing rollers and raceways were severely worn, and the cage was deformed.

Fault Analysis: The main reason was that the truck often operated under overloaded conditions (exceeding the bearing load capacity by 30%), and the road condition was poor, resulting in frequent impact loads on the bearing; in addition, the lubricating oil was not replaced in time, and the oil quality deteriorated, reducing the lubrication effect and accelerating bearing wear.

Solution: 1. Replace the worn bearing with a new TIMKEN 30210M bearing (original product); 2. Replace the axle lubricating oil with 85W-90 heavy-duty gear oil, and clean the oil circuit; 3. Adjust the axle load to ensure that it does not exceed the bearing load capacity; 4. Conduct a road test, the abnormal noise and vibration disappear, and the bearing temperature is normal (55°C).

Prevention Measures: Prohibit overloading of the truck, regularly check the axle load; replace the lubricating oil every 20,000 km, and check the oil quality regularly.

Case 3: INA Needle Roller Bearing Jamming Fault in Textile Machinery Transmission

Fault Phenomenon: A textile mill's spinning frame transmission bearing (INA NA2205-2RSR) was jammed during operation, causing the transmission shaft to fail to rotate, and the equipment stopped working.

Fault Analysis: After disassembly, it was found that the bearing needles were stuck, the inner ring raceway was scratched, and there was a lot of cotton wool and dust in the bearing. The main reason was that the textile workshop had a lot of cotton wool, which entered the bearing interior through the damaged seal, causing the needles to be stuck and the raceway to be scratched.

Solution: 1. Replace the jammed bearing with a new INA NA2205-2RSR bearing; 2. Replace the seal with a high-density rubber seal to enhance dustproof performance; 3. Install a dust cover around the bearing to prevent cotton wool from entering; 4. Clean the transmission part, reinstall the bearing, and test run, the equipment operates normally.

Prevention Measures: Clean the textile workshop regularly, install dust-proof devices for key bearing parts; check the bearing seal every 1 month, and replace it in time if it is damaged.

Case 4: FAG High-Precision Angular Contact Ball Bearing Noise Fault in CNC Machine Tool Spindle

Fault Phenomenon: A CNC machining center spindle bearing (FAG B7012-C-T-P4S-UL) had abnormal noise during high-speed rotation (12000 r/min), and the machining accuracy of the workpiece decreased (the roundness error exceeded 0.005 mm).

Fault Analysis: After inspection, it was found that the bearing rotation accuracy decreased, the rollers had slight pitting corrosion, and the lubricating grease was insufficient. The main reason was that the bearing had been used for 2 years without replacement, and the high-speed rotation caused wear of the rollers and raceways; in addition, the lubricating grease was volatilized and consumed, resulting in insufficient lubrication and increased noise.

Solution: 1. Replace the bearing with a new FAG B7012-C-T-P4S-UL high-precision bearing; 2. Fill the bearing with high-temperature resistant precision bearing grease (filling amount is 1/3 of the internal space); 3. Adjust the spindle rotation accuracy, and calibrate the machining accuracy of the machine tool; 4. Test run at high speed, the abnormal noise disappears, and the workpiece machining accuracy returns to the standard (roundness error ≤0.002 mm).

Prevention Measures: Replace the CNC machine tool spindle bearing every 1.5-2 years; check the lubricating grease amount every 3 months, and add lubricant in time; regularly calibrate the spindle rotation accuracy.

FAQ (Frequently Asked Questions)

Question

Answer

What is the difference between FAG, TIMKEN, and INA bearings, and how to choose the right brand for different application scenarios?

FAG is good at high-precision, high-speed bearings, suitable for CNC machine tools, wind power, and aerospace; TIMKEN is dominant in heavy-duty, impact-resistant bearings, suitable for trucks, metallurgy, and mining; INA is specialized in compact needle roller and linear motion bearings, suitable for automotive transmissions and textile machinery. When choosing, prioritize FAG for high-precision requirements, TIMKEN for heavy-load harsh conditions, and INA for limited installation space.

How to judge whether the bearing is damaged and needs to be replaced?

There are three key judgment criteria: 1. Temperature: The bearing temperature exceeds 80°C for a long time, or the temperature rise exceeds 40°C; 2. Noise and vibration: Abnormal noise (creaking, roaring) or obvious vibration (amplitude >0.05 mm) occurs during operation; 3. Wear and damage: After disassembly, the raceway, rolling elements have obvious wear, pitting corrosion, cracks, or the cage is deformed. If any of the above conditions occur, the bearing should be replaced in time.

What factors will affect the service life of the bearing, and how to extend it?

The main influencing factors include: lubrication (type and amount of lubricant, lubrication cycle), load (avoid overloading), installation (correct installation method, fit clearance), working environment (dust, high temperature, corrosion), and maintenance frequency. To extend the service life, you can follow the maintenance suggestions in this guide: select appropriate lubricants, avoid overloading, ensure correct installation, keep the working environment clean, and conduct regular inspection and maintenance.

Can the bearings of different brands (FAG, TIMKEN, INA) be replaced with each other if the model is the same?

Under normal circumstances, bearings of the same model from three brands can be replaced with each other, because they all comply with international bearing standards (ISO standards) in terms of size, load-bearing capacity, and rotation accuracy. However, it should be noted that there may be slight differences in the material, process, and performance of bearings from different brands. For high-precision or special working conditions (such as high temperature, heavy load), it is recommended to use the same brand and model of bearings to ensure the stability of equipment operation.

How to confirm the authenticity of FAG, TIMKEN, and INA bearings in this inventory?

You can confirm the authenticity through three methods: 1. Certification: All bearings in the inventory are accompanied by original brand certification documents (such as product qualification certificates, inspection reports); 2. Marking: The inner and outer rings of the original bearings have clear, standardized brand marks (FAG, TIMKEN, INA) and model specifications, with no blurring or deformation; 3. Channel: We purchase directly from the official authorized distributors of the three brands, with complete purchase channels and traceability, ensuring that all products are original and authentic.

Procurement Guide and Call to Action

This inventory integrates the core models of FAG, TIMKEN, and INA bearings, providing a one-stop procurement reference and technical solution for procurement personnel, maintenance engineers, and distributors. All bearings in the inventory are original products with complete certifications, stable performance, and reliable quality, which can fully meet the needs of different industries and application scenarios. Whether you need high-precision bearings for CNC machine tools, heavy-duty bearings for metallurgical equipment, or compact needle roller bearings for automotive transmissions, you can find the corresponding models in this inventory.

For procurement needs, we provide flexible procurement plans, reasonable prices, and perfect after-sales service. Our professional procurement team can help you screen the most suitable bearing models according to your application scenarios, budget, and technical requirements, and provide detailed product parameters and quotation information. For technical problems, our professional technical team has rich on-site maintenance experience, which can provide you with timely fault diagnosis, maintenance guidance, and technical support to help you solve bearing application problems efficiently.

If you have any needs for bearing procurement, technical consultation, or maintenance support, please contact us in time. We are committed to providing you with high-quality products and professional services, helping you reduce procurement costs, improve equipment operation efficiency, and achieve win-win cooperation.

 

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