Core Application & Target User Demand Specification
The bearings listed (including 254941QU, 4G32840H, 3053748H, and series such as 53626H, 32630, 91682) are precision-engineered for heavy-duty industrial rotating systems, specifically adapt (adapting to) equipment models including large-scale belt conveyors (e.g., DTII type), mining crushers (PE series), rolling mill work rolls, and port hoisting machinery. Targeting heavy machinery manufacturers, industrial maintenance service providers, and mining/port operation enterprises, they address core demands for high load-bearing capacity, wear resistance, and stable operation under harsh conditions (dust, vibration, variable loads). Their core purpose is to minimize unplanned downtime caused by bearing failures, optimize equipment operational efficiency, and extend the service life of key rotating components, complying with ISO 355, DIN 628, and GB/T 307.1 international/national bearing standards.
Bearing Classification & Detailed Technical Specifications
H-Series Heavy-Duty Radial Bearings (53626H, 53532H, 53622H, 53630H)
Designed for medium-to-heavy radial load scenarios in industrial transmission systems, this H-series addresses the pain point of premature wear due to inadequate load-bearing capacity in general-purpose bearings. Anchored in textile machinery main shafts, small rolling mill auxiliary systems, and conveyor drive units, they feature optimized raceway geometry for uniform load distribution. Value is prioritized through high-precision grinding technology, ensuring low noise and long service life, compliant with DIN 628-2015 standards for radial roller bearings.
No. | Bearing Model | N.W.Kg | Dimensions d*D*B(mm) | Material | Main Wear Reasons | Precautions to Avoid Damage |
1 | 53626H | 28.5 | 130*280*93 | High-carbon chromium bearing steel (GCr15SiMn) with quenched and tempered heat treatment | 1. Abnormal load distribution caused by shaft misalignment exceeding 0.2mm/m; 2. Lubricant degradation due to prolonged operation at 90℃+ without replacement | 1. Use laser alignment tools to calibrate shaft coaxiality quarterly; 2. Adopt high-temperature resistant lubricating grease (operating temp range -20℃ to 120℃) and replace every 2000 operating hours |
2 | 53532H | 23.6 | 160*290*80 | GCr15 bearing steel with carbonitriding surface treatment | 1. Abrasive wear from particulate contamination (e.g., dust, metal chips) entering the bearing chamber; 2. Fatigue peeling of raceway due to frequent start-stop cycles (more than 15 times/hour) | 1. Install double-layer labyrinth seals with felt wipers to prevent contamination; 2. Optimize control system to reduce unnecessary start-stops and apply pre-lubrication before each startup |
3 | 53622H | 18.2 | 110*240*80 | SUJ2 chrome steel (equivalent to GCr15) with precision grinding | 1. Insufficient lubrication caused by clogged lubrication channels; 2. Corrosion due to humid working environment (relative humidity >85%) | 1. Clean lubrication lines monthly and install pressure sensors to monitor lubricant supply; 2. Apply anti-corrosion coating to the bearing outer ring and use moisture-resistant lubricants in high-humidity areas |
4 | 53630H | 42.8 | 150*320*108 | GCr15SiMn alloy bearing steel with shot peening treatment on raceway | 1. Impact load damage during equipment emergency stop; 2. Thermal deformation of cage due to uneven heat dissipation | 1. Equip with hydraulic buffer devices to absorb impact during emergency stops; 2. Ensure bearing housing ventilation is unobstructed and install temperature sensors for real-time monitoring |
Large-Size Heavy-Duty Bearings (1169/506.43SQ, 2687/1049, 91682/800, 1681/800, 91682/530, 1689/520)
Engineered for ultra-heavy load and large-diameter rotating scenarios, this category solves the pain point of insufficient stability in large-scale equipment such as port cranes and mining mill shafts. Anchored in 1000t/h hoisting machinery, large crusher main shafts, and rolling mill backup rolls, they deliver exceptional radial and axial load-bearing capacity. Value is embodied in high-precision machining of raceways and rolling elements, ensuring uniform stress distribution and compliance with ISO 355-2017 standards for large-size roller bearings.
No. | Bearing Model | N.W.Kg | Dimensions d*D*B(mm) | Material | Main Wear Reasons | Precautions to Avoid Damage |
1 | 1169/506.43SQ | 136 | 506.43*736.6*82.55 | High-strength alloy bearing steel (GCr18Mo) with deep hardening treatment (hardness HRC 60-64) | 1. Raceway indentation caused by foreign hard particles (e.g., steel shot) under heavy load; 2. Fatigue failure due to exceeding rated speed by 15% or more | 1. Install high-precision oil filters (filtration accuracy ≥3μm) in the lubrication system; 2. Equip speed monitors to ensure operation within rated speed range (≤120r/min for this model) |
2 | 2687/1049 | 441 | 1049*1270*220 | Forged bearing steel (GCr15SiMn) with ultrasonic flaw detection (no internal defects ≥0.5mm) | 1. Uneven wear caused by improper mounting interference (exceeding 0.05mm); 2. Thermal seizure due to inadequate cooling in high-load operation | 1. Use hydraulic mounting tools to control interference within 0.02-0.04mm; 2. Configure forced lubrication and cooling systems, ensuring oil flow rate ≥15L/min |
3 | 91682/800 | 295 | 800*1060*155 | GCr18Mo alloy steel with nitrided surface (hardness HV ≥850) | 1. Corrosion caused by salt spray in marine/port environments; 2. Cage fracture due to vibration amplitude exceeding 0.5mm | 1. Adopt anti-corrosion lubricants with rust inhibitors and install protective covers against salt spray; 2. Mount vibration dampers on the bearing housing and monitor vibration levels in real-time |
4 | 1681/800 | 127 | 800*950*120 | SUJ2 chrome steel with precision lapping of rolling elements | 1. Lubricant leakage leading to dry friction; 2. Raceway wear due to misalignment of rotating parts | 1. Regularly inspect seal integrity and replace worn seals; 2. Conduct annual shaft alignment checks using laser alignment technology |
5 | 91682/530 | 94 | 530*710*109 | GCr15SiMn bearing steel with shot peening (surface roughness Ra ≤0.02μm) | 1. Abrasive wear from coal dust in mining environments; 2. Fatigue peeling due to long-term continuous operation (over 8000 hours without maintenance) | 1. Install dust-proof covers with air purge systems; 2. Schedule preventive maintenance every 6000 hours, including lubricant replacement and raceway inspection |
6 | 1689/520 | 27.8 | 520*620*60 | High-carbon chromium bearing steel (GCr15) with quenched raceways | 1. Impact damage during equipment startup without pre-lubrication; 2. Corrosion from water ingress in wet working conditions | 1. Implement pre-lubrication procedures (10 seconds of lubricant supply) before startup; 2. Use water-resistant seals and apply anti-rust oil to external surfaces |
32600 Series & Equivalent Precision Bearings (32630, 3630, 32622, 3622)
This series is tailored for general industrial transmission systems requiring high precision and interchangeability, addressing the pain point of difficult replacement and poor compatibility of non-standard bearings. Anchored in electric motor shafts, reducer output shafts, and small conveyor systems, they offer excellent dimensional accuracy and rotational flexibility. Value is guaranteed by strict compliance with GB/T 307.1-2015 precision standards, ensuring direct interchangeability with international brand equivalents.
No. | Bearing Model | N.W.Kg | Dimensions d*D*B(mm) | Material | Main Wear Reasons | Precautions to Avoid Damage |
1 | 32630 | 44.9 | 150*320*108 | GCr15 bearing steel with precision grinding (grade P6) | 1. Raceway wear caused by improper lubricant viscosity (too low for operating load); 2. Damage from excessive mounting force during installation | 1. Select lubricant with viscosity grade ISO VG 460 for heavy-load conditions; 2. Use induction heating tools for mounting (heating temp ≤120℃) to avoid mechanical force damage |
2 | 3630 | 43.7 | 150*320*108 | SUJ2 chrome steel (equivalent to GCr15) with P6 precision grade | 1. Fatigue wear due to resonance caused by operating speed near critical frequency; 2. Contamination from lubricant mixing (different types of grease) | 1. Adjust operating speed to avoid critical frequency range (150-180r/min for this model); 2. Ensure consistent lubricant type and avoid mixing different brands/grades |
3 | 32630 | 44.9 | 150*320*108 | GCr15SiMn alloy steel with P6 precision grinding | 1. Thermal deformation due to uneven temperature distribution; 2. Wear from shaft runout exceeding 0.03mm | 1. Ensure uniform cooling around the bearing housing; 2. Monitor shaft runout regularly and repair worn shafts if necessary |
4 | 32622 | 19 | 110*240*80 | GCr15 bearing steel with P0 precision grade | 1. Insufficient lubrication due to clogged grease nipples; 2. Corrosion from chemical vapors in industrial environments | 1. Clean grease nipples before lubrication and ensure unobstructed grease flow; 2. Install chemical-resistant seals in corrosive environments |
5 | 3622 | 18.3 | 110*240*80 | SUJ2 chrome steel with P0 precision grade | 1. Wear from foreign particles entering through damaged seals; 2. Fatigue failure due to overloading (exceeding rated dynamic load by 20%) | 1. Inspect seals weekly and replace damaged ones immediately; 2. Monitor load levels and avoid overloading during peak operation |
Special Application Bearings (19954EQ, 32148, 2007144, 9019456Q, 32240, 2007140, 9019440Q, 32136, 2007136)
Engineered for specialized industrial scenarios such as high-speed rotation, high-temperature operation, and precision transmission, this category solves the pain point of standard bearings failing to meet specific working conditions. Anchored in precision machine tools, high-speed electric motors, and automotive transmission systems, they integrate advanced material technology and structural design. Value is reflected in tailored performance characteristics (e.g., high-speed stability, corrosion resistance) and compliance with ISO 199-2014 special bearing standards.
No. | Bearing Model | N.W.Kg | Dimensions d*D*B(mm) | Material | Main Wear Reasons | Precautions to Avoid Damage |
1 | 19954EQ | 164 | 270*550*130 | High-temperature bearing steel (M50NiL) with heat resistance up to 350℃ | 1. Oxidation wear at high temperatures (exceeding 350℃); 2. Cage deformation due to thermal expansion | 1. Monitor temperature in real-time and ensure it stays below 350℃; 2. Use high-temperature resistant cage materials (e.g., Inconel 718) and maintain adequate clearance for thermal expansion |
2 | 32148 | 20.9 | 240*360*56 | GCr15 bearing steel with P5 precision grade | 1. Wear from high-speed rotation (exceeding 3000r/min) causing lubricant breakdown; 2. Misalignment leading to edge loading | 1. Use synthetic lubricating oil (e.g., polyalphaolefin) for high-speed operation; 2. Ensure shaft alignment within 0.01mm/m using precision alignment tools |
3 | 2007144 | 23.4 | 200*340*76 | SUJ2 chrome steel with electroplated hard chrome surface | 1. Corrosion from acidic or alkaline environments; 2. Wear from contact with abrasive materials | 1. Use in neutral environments (pH 6-8) or install chemical-resistant protective covers; 2. Apply wear-resistant coatings to the outer ring if in contact with abrasive materials |
4 | 9019456Q | 150 | 280*520*145 | Forged GCr18Mo alloy steel with ultrasonic flaw detection | 1. Impact damage from sudden load changes; 2. Lubricant starvation during rapid acceleration | 1. Install load shock absorbers to mitigate sudden load changes; 2. Equip with a lubricant accumulator to ensure adequate supply during acceleration |
5 | 32240 | 27.3 | 200*360*58 | GCr15SiMn bearing steel with P6 precision grade | 1. Fatigue wear due to long-term operation at high loads; 2. Corrosion from water ingress in washing environments | 1. Schedule regular load checks and avoid continuous operation at full load; 2. Use waterproof seals and apply anti-rust treatment after washing |
6 | 2007140 | 18 | 200*310*70 | SUJ2 chrome steel with P0 precision grade | 1. Wear from dust accumulation in construction environments; 2. Insufficient lubrication due to infrequent maintenance | 1. Install dust-proof covers with rubber gaskets; 2. Establish a maintenance schedule (every 1500 operating hours) for lubricant replacement |
7 | 9019440Q | 82.6 | 200*400*122 | GCr15 bearing steel with carbonitriding treatment | 1. Cage wear due to vibration in off-road equipment; 2. Thermal seizure due to inadequate heat dissipation | 1. Install vibration dampers and use cage materials with high fatigue resistance; 2. Ensure the cooling system is functioning properly and clean cooling fins regularly |
8 | 9019440Q | 82.6 | 200*400*122 | GCr15 bearing steel with carbonitriding treatment | 1. Abrasive wear from sand and dust in mining environments; 2. Damage from improper storage (moisture, collision) | 1. Use air-purged dust seals in dusty environments; 2. Store in a dry, ventilated area with protective covers to avoid collision |
9 | 32136 | 10.5 | 180*280*46 | GCr15 bearing steel with P6 precision grade | 1. Wear from high-speed rotation causing lubricant degradation; 2. Misalignment due to worn shaft bearings | 1. Use high-speed lubricating grease with good oxidation stability; 2. Inspect shaft bearings regularly and replace worn components |
10 | 32136 | 10.5 | 180*280*46 | GCr15 bearing steel with P6 precision grade | 1. Corrosion from humid storage conditions; 2. Damage from excessive mounting pressure | 1. Store with desiccants in sealed containers; 2. Use hydraulic mounting tools to control mounting pressure |
11 | 2007136 | 13.8 | 180*280*64 | SUJ2 chrome steel with P0 precision grade | 1. Wear from foreign particles entering the bearing; 2. Fatigue failure due to frequent start-stop cycles | 1. Install multi-layer filters in the lubrication system; 2. Optimize equipment operation to reduce start-stop frequency |
12 | 2007136 | 13.8 | 180*280*64 | SUJ2 chrome steel with P0 precision grade | 1. Lubricant contamination from mixing different types; 2. Thermal deformation due to uneven heating during installation | 1. Use a single type/grade of lubricant consistently; 2. Heat the bearing uniformly during installation (induction heating is recommended) |
On-Site Fault Maintenance Case
Case 1: 32630 Bearing Failure in Mining Conveyor Drive System
A large mining enterprise reported that the drive system of its DTII-type belt conveyor (capacity 800t/h) experienced frequent shutdowns due to bearing failures, with the failed component identified as 32630. On-site inspection revealed severe raceway peeling and rolling element damage. Root cause analysis: 1. The conveyor operated continuously at full load (exceeding the bearing's rated dynamic load by 18%) for over 7000 hours without maintenance; 2. The lubricating grease had degraded and become contaminated with coal dust, losing its lubricating effect. Maintenance solution: 1. Replaced the failed 32630 bearing with a new one (material: GCr15SiMn, precision grade P6) and ensured proper mounting with induction heating (temperature 110℃, interference 0.03mm); 2. Replaced the lubricating grease with ISO VG 460 high-load grease and installed a 3μm precision oil filter; 3. Adjusted the conveyor operation schedule to avoid continuous full-load operation and scheduled preventive maintenance every 5000 hours. Post-maintenance effect: The bearing operated stably for 12 months without failure, reducing downtime by 85% and maintenance costs by 60%.
Case 2: 9019440Q Bearing Corrosion Failure in Port Hoisting Machinery
A port's 100t hoisting crane experienced bearing failure in its main hoist mechanism, with the failed bearing being 9019440Q. Inspection found severe corrosion on the raceway and rolling elements, with salt crystals attached to the surface. Root cause: The bearing was exposed to salt spray in the marine environment, and the original seal was worn, leading to salt water ingress. Solution: 1. Replaced the failed bearing with a new 9019440Q bearing with carbonitriding surface treatment; 2. Upgraded the seal to a double-layer labyrinth seal with rubber gaskets and installed a salt spray protective cover; 3. Changed the lubricant to anti-corrosion grease with rust inhibitors (compliant with ASTM D1743 salt spray test standards). Post-improvement effect: The bearing service life was extended from 3 months to 15 months, significantly improving the reliability of the hoisting machinery and reducing maintenance frequency.
Procurement Reference Standard & Call to Action
Procurement reference standards for our bearings include: 1. Material standard: GB/T 18254-2016 (High-carbon chromium bearing steel); 2. Precision standard: GB/T 307.1-2015 (Rolling bearings - Radial bearings - Tolerances); 3. Performance standard: ISO 355-2017 (Rolling bearings - Single row cylindrical roller bearings). All products undergo strict quality inspection (including hardness testing, dimensional measurement, and ultrasonic flaw detection) before leaving the factory, with complete quality certification documents provided. Whether you need bearings for mining, port, or industrial manufacturing applications, we can provide customized solutions based on your specific equipment models and working conditions. For detailed product catalogs, technical parameters, or quotation requests, please contact our professional sales team. We are committed to providing high-quality, reliable bearing products and professional technical support to help you optimize equipment performance and reduce operational costs.
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