22 Feb 2026

SPHERICAL ROLLER BEARING 629274 for Drilling rig SKF FAG

Introduction

This guide focuses on the full range of high-quality spare parts specifically designed for drilling rigs, including but not limited to mud pump components, valve parts, bearings, cutting tools, and sealing elements. Our product portfolio covers key models such as the F-1300 mud pump, F-1000 mud pump, and various standard drilling rig configurations, directly addressing the core needs of oilfield operation teams, drilling rig maintenance companies, and spare parts procurement departments. The primary purpose of these spare parts is to ensure uninterrupted drilling operations, reduce equipment downtime, improve operational efficiency, and extend the service life of key drilling components—critical factors for controlling costs and maximizing productivity in harsh oilfield environments.

We prioritize authenticity, durability, and compatibility, adhering to international industry standards (API, GB, etc.) and matching the specifications of well-known original equipment manufacturers (OEMs). Each part undergoes strict quality inspection to meet the rigorous requirements of on-site drilling operations, solving the common pain points of procurement teams such as incompatible parts, poor durability of low-quality replacements, and lack of professional technical support. Whether you need emergency replacement parts to resolve on-site failures or regular maintenance components to prevent equipment breakdowns, our comprehensive supply system and professional technical guidance can provide tailored solutions.

Product Overview

Our drilling rig spare parts cover all key functional systems of drilling equipment, including mud circulation systems, valve control systems, power transmission systems, cutting systems, and sealing systems. The core products include bearings (CAGE BEARING LOWER 629269, RACE, BEARING UPPER 629266, etc.), mud pump components (LINERS, PISTON ROD, PISTON, etc.), valve parts (VLV BUTTERFLY, GATE VALVE REPAIR KITS, VALVE COVER GASKET, etc.), cutting tools (SHEAR BLADE – DOWN), sealing elements (SEAL O-RING, BLADDER FOR PULSATION DAMPENERS), and various auxiliary components (PRESSURE GAUGE, PUMP SPRAY ASSEMBLY, CHROME STEEL BALLS). All parts are manufactured in accordance with industry standards such as API 7, GB3452.1-82, ensuring full compatibility with original equipment and reliable performance in long-term operation.

Core Product Categories & Key Specifications

1. Bearing Components

Bearing components are critical for the smooth operation of drilling rig power transmission systems, withstanding high loads, high speeds, and severe dust and vibration environments. Our bearing products include cage bearings, race bearings, and complete bearing assemblies, such as the CAGE BEARING LOWER 629269, RACE, BEARING UPPER 629266, and BEARING ZH~5512. These bearings are made of high-strength alloy steel,经过 precision forging and heat treatment to enhance wear resistance and fatigue strength, meeting the ISO 281 standard for bearing life.

2. Mud Pump Components

Mud pumps are the "heart" of drilling rigs, and their components directly affect the stability of the mud circulation system. Our mud pump spare parts include LINERS (5″, 5″1/2, 6″1/4), PISTON ROD (36001-05.19A), PISTON (83BDD, 012180253), LINER LOCK RING, and REPAIR KITS. These components are designed to resist corrosion, erosion, and high pressure, with liners made of wear-resistant alloy materials to extend service life in high-solids mud environments.

3. Valve Parts

Valve parts control the flow of mud, oil, and other media in drilling rigs, requiring high sealing performance and pressure resistance. Our valve products include 8″, 12″ VLV BUTTERFLY valves, 2″ and 4″ GATE VALVE MINOR REPAIR KITS, VALVE COVER GASKET, and SAFETY VALVE JY-3. These valves feature ductile iron bodies, 416SS stems, and BUNA-N seats, ensuring reliable sealing and corrosion resistance under 200 PSI working pressure, complying with API 609 standards.

4. Sealing & Auxiliary Components

Sealing elements and auxiliary components play a key role in preventing leakage and ensuring accurate operation of equipment. Our products include SEAL O-RING (230 X 7.0, GB3452.1-82), BLADDER FOR PULSATION DAMPENERS (P/N 6922-0003-00), PRESSURE GAUGE (M14X1.5, 0-1.6MPA), and SHEAR BLADE – DOWN (P/N 11148.09.10.01.09). All sealing elements are made of high-quality elastomers (BUNA-N, Neoprene) to resist high temperature, oil, and chemical corrosion, while auxiliary components meet industry accuracy standards to ensure reliable equipment monitoring and control.

Functional Features

1. High Compatibility

All spare parts are designed to match the specifications of original drilling rig equipment and OEM standards, including SKF, FAG, DEMCO/USA, ODRILL/USA, and domestic manufacturers such as SHANDONG QINGNENG POWER CO. LTD. and BAOJI RUITONG OILFIELD MACHINERY CO., LTD. This ensures that each part can be directly installed without modification, avoiding the risk of equipment damage caused by incompatible parts and reducing installation time.

2. Superior Durability

We select high-quality raw materials (high-strength alloy steel, wear-resistant composites, high-performance elastomers) and adopt advanced manufacturing processes (precision machining, heat treatment, surface plating) to enhance the wear resistance, corrosion resistance, and fatigue resistance of parts. For example, liners and pistons are treated with special wear-resistant coatings, extending their service life by 30% compared to ordinary replacement parts; bearings undergo carburizing heat treatment to improve surface hardness and impact resistance.

3. Reliable Sealing & Pressure Resistance

Sealing elements and valve parts are designed with advanced sealing structures, complying with API 601 and API 607 standards for fire safety and sealing performance. The SEAL O-RING (GB3452.1-82) features precise dimensional control to ensure tight sealing under high pressure (up to 1.6MPA and above), preventing media leakage; the BLADDER FOR PULSATION DAMPENERS is made of flexible, pressure-resistant materials to absorb mud pressure fluctuations and protect the mud pump from damage.

4. Easy Installation & Maintenance

All spare parts are designed with on-site maintenance needs in mind, with simple and reasonable structures that allow maintenance personnel to install and replace them quickly using standard tools. For example, the MINOR REPAIR KITS for gate valves include all necessary components (gaskets, seals, fasteners) for on-site maintenance, reducing the need for multiple purchases and simplifying the maintenance process. Additionally, each part is marked with clear part numbers and specifications for easy identification and procurement.

Structural Characteristics

1. Bearing Components

Bearing components adopt a split or integrated structure according to their installation position and functional requirements. The CAGE BEARING LOWER 629269 and RACE, BEARING UPPER 629266 feature a precision-machined raceway and cage, with a clearance design optimized for high-load operation, reducing friction and heat generation during rotation. The bearing cage is made of high-strength engineering plastic or alloy steel, ensuring good impact resistance and wear resistance, while the raceway is polished to improve smoothness and extend service life.

2. Mud Pump Components

Liners adopt a cylindrical structure with a wear-resistant inner surface, designed to fit tightly with the mud pump cylinder to prevent mud leakage and reduce wear. The PISTON ROD is made of high-strength alloy steel with a chrome-plated surface, enhancing corrosion resistance and wear resistance, and is equipped with a precision thread for reliable connection with the piston. The LINER LOCK RING features a split design, making it easy to install and disassemble, while ensuring the liner is firmly fixed in the cylinder.

3. Valve Parts

VLV BUTTERFLY valves adopt a lug-type connection design, which is easy to install and disassemble, and can be used in both horizontal and vertical pipelines. The valve body is made of ductile iron, which has good impact resistance and pressure resistance; the stem is made of 416 stainless steel, which is corrosion-resistant and wear-resistant; the disc is nickel-plated ductile iron, which enhances wear resistance and sealing performance. The GATE VALVE MINOR REPAIR KITS include gaskets, seals, and valve stems, all of which are designed to match the original valve structure, ensuring that the repaired valve returns to its original performance.

4. Sealing & Auxiliary Components

SEAL O-RING adopts a circular cross-section design, which is simple in structure and good in sealing performance, and can adapt to different temperature and pressure environments. The BLADDER FOR PULSATION DAMPENERS is a flexible hollow structure, which can expand and contract with changes in mud pressure to absorb pressure fluctuations. The PRESSURE GAUGE adopts a double-scale design (MPa), with a clear dial and accurate measurement, and is equipped with a shock-proof structure to adapt to the vibration environment of drilling rigs.

Applicable Working Conditions

Our drilling rig spare parts are specially designed for harsh oilfield drilling environments, suitable for various working conditions, including:

 Onshore Oilfield Drilling: Adapt to dry, dusty, high-temperature, and low-temperature environments (temperature range: -40℃ to 80℃), suitable for conventional oil and gas drilling, shale gas drilling, and coalbed methane drilling.

 Offshore Oilfield Drilling: Resist high humidity, salt spray corrosion, and strong wind and wave vibration, complying with offshore drilling equipment safety standards, suitable for offshore platforms and jack-up drilling rigs.

 High-Pressure Drilling: Bear high working pressure (up to 200 PSI and above), suitable for deep well drilling, ultra-deep well drilling, and high-pressure mud circulation systems.

 Corrosive Environment Drilling: Resist corrosion from acidic, alkaline, and high-salinity mud, suitable for drilling in coastal, saline-alkali, and other corrosive areas.

 Continuous Operation Scenarios: Designed for long-term continuous operation (24/7), with high durability and reliability, reducing the frequency of part replacement and equipment downtime.

Maintenance & Care Recommendations

Proper maintenance and care of drilling rig spare parts are essential to extend their service life, ensure equipment stability, and reduce maintenance costs. The following are professional maintenance recommendations based on on-site operation experience:

1. Storage Requirements

Store spare parts in a clean, dry, and well-ventilated warehouse, avoiding direct sunlight, rain, and humidity. Bearings, sealing elements, and precision components should be stored in sealed packaging to prevent dust, moisture, and corrosion; metal components should be coated with anti-rust oil regularly (every 3 months) to avoid rust. Spare parts should be placed on shelves according to their categories and specifications, marked clearly, and avoid stacking heavy objects to prevent deformation.

2. Installation Precautions

Before installation, clean the installation position of the equipment and the surface of the spare part to remove dust, oil, and debris, avoiding damage to the part during installation. For bearings and rotating components, apply an appropriate amount of lubricating grease (matching the working temperature and load) to reduce friction; for sealing elements, check for damage, deformation, or aging before installation, and replace them in time if necessary. Follow the equipment installation manual to ensure correct installation and torque adjustment.

3. Regular Inspection & Replacement

During drilling operations, conduct regular inspections of key spare parts (daily inspection for high-wear parts such as liners, pistons, and shear blades; weekly inspection for bearings and valves). Check for signs of wear, corrosion, leakage, or deformation, and record the operation status. Replace worn or damaged parts in time according to the service life recommended by the manufacturer (for example, liners should be replaced when the inner diameter wear exceeds 1mm; O-rings should be replaced every 6 months or when aging is found). For emergency replacement parts, conduct a pre-installation inspection to ensure compatibility and quality.

4. Lubrication & Protection

Regularly lubricate rotating components such as bearings, piston rods, and valve stems with appropriate lubricating oil or grease, following the manufacturer's recommendations for lubricant type and lubrication cycle. In harsh environments (dust, high temperature), increase the lubrication frequency and use high-temperature, dust-proof lubricants. For equipment operating in corrosive environments, clean the surface of spare parts regularly and apply anti-corrosion coatings to extend their service life.

We supply the following spare parts:

 

SHEAR BLADE – DOWN; PART NUMBER: 11148.09.10.01.09

BLADDER FOR PULSATION DAMPENERS P/N 6922-0003-00

PISTON ROD FOR MUD PUM; PART NUMBER: 36001-05.19A

COVER VALVE POT; PART NUMBER: NAH36002-05.02; MANUFACTURER: SHANDONG QINGNENG POWER CO. LTD.

LINERS 6″1/4; PART NUMBER: 5499625

CYLINDER COVER; PART NUMBER: 36001-05.03

PUMP SPRAY, ASSEMBLY; PART NUMBER: 36001-08B.01.00; MANUFACTURER: BAOJI RUITONG OILFIELD MACHINERY CO., LTD.

SEAL O-RING, 230 X 7.0; PART NUMBER: GB3452.1-82; MANUFACTURER: RG PETRO MACHINERY GROUP

MINOR REPAIR KIT FOR 2″ GATE VALVE, ODRILL P/N DGV-25 KRK

VLV BUTTERFLY 12″; LUG; NE-C; 200 PSI; DUCTILE IRON BODY; 416SS STEM; NICKEL PLTD. DUCT. IRON DISC; BUNA-N SEAT; 10 POS. HDL.; WEIGH T 105 LBS; DEMCO/USA; PART NUMBER: J022127-5115311

3″ BFV, LUG, NE-C, 200 PSI, DUCTILE IRON BODY, 416SS STEM, NICKEL PLTD. DUCT. IRON DISC, BUNA-N SEAT, 10 POS. HDL., WEIGHT 13.60 LBS, ODRILL P/N BVC03L, MFG – ODRILL / USA

VALVE COVER GASKET; PART NUMBER: 36001-05.13

TOP SEAL; PART NUMBER: RS11148.09.18.01

MINOR REPAIR KIT FOR 4″ GATE VALVE, ODRILL P/N DGV-45 KRK

INNER HEX SCREQ; PART NUMBER: 11148.09.10.01.03

RING LINER THREAD FOR MUD PUMP F-1300; PART NUMBER: NAH36001-05.17; MANUFACTURER: SHANDONG QINGNENG POWER CO. LTD.

5’’ LINER P/N 5495500

SAFETY VALVE JY-3 FOR MUD PUMP F-1300

PRESSURE GAUGE DOUBLE SCALE M14X1.5;0-1.6MPA; PART NUMBER: Y-60Z

FULL OPEN SEAT; MUD API-7 TYPE 1 SWND-7S1

LINER; 5″-1/2; PART NUMBER: 05499550HP; MANUFACTURER: MISSION

RING, LINER LOCK, FOR MUD PUMP F-1300

5’’ PISTON P/N 012180253 OR P/N 81BDD

VLV BUTTERFLY 8″; LUG; NE-C; 200 PSI; DUCTILE IRON BODY; 416SS STEM; NICKEL PLTD. DUCT. IRON DISC; BUNA-N SEAT; 10 POS. HDL.; WEIGHT 50 LBS; DEMCO/USA; PART NUMBER: J022125-5115311

8” EXPANSION JOINTS WITH EASY-ALIGN GALVANIZED STEEL FLANGED ENDS (SINGLE ARCH, UNTHREADED BOLT HOLES, NEOPRENE), MFG – MCMASTER-CARR P/N 9175K23

PONY RODS (INTERMEDIATE ROD); PART NUMBER: 36001.04.11

PISTON; DURO; 5″1/2; DUAL; FOR F-1000 MUD PUMP; PART NUMBER: 83BDD; MANUFACTURER: SOUTHWEST OILFIELD0 PRODUCTS INC

FRONT PACKER; PART NUMBER: RS11148.09.01.02

Body 210302-301

Liner 551.030

GEAR TABLE ASSEMBLY 648220-A

RACE, BEARING UPPER 629266

CAGE, BEARING UPPER 629267

CAGE, BEARING LOWER 629269

RACE, BEARING LOWER 629270

GEAR TABLE ORING 629282

PINION SHAFT NUT 629275

BEARING ZH~5512

BEARING ZS-4722

OIL SEAL YS-5873

CORING AN-6227-87

2” CHROME STEEL BALLS 7801611

3” CHROME STEEL BALLS 7801614

LOCK PAWL PIN 644337

LOCK PAWL HANDLE 644394

LOCK PAWL HANDLE PIN 644395

LOCK PAWL ~ LEFT 644396

LOCK PAWL ~ RIGHT 644397

RACE, BEARING MIDDLE 648226

SPLIT MASTER BUSHING ASSEMBLY 621974-A

 

On-Site Fault Maintenance Cases

The following are real on-site fault cases and solutions, providing practical reference for maintenance teams to quickly resolve problems using our spare parts:

Case 1: Mud Pump Leakage & Pressure Drop

Fault Phenomenon: During shale gas drilling, the F-1300 mud pump had obvious mud leakage at the cylinder end, and the outlet pressure dropped by 15%, affecting drilling efficiency. Reason Analysis: After disassembly, it was found that the liner (P/N 5499625) was severely worn (inner diameter wear exceeded 1.2mm), and the liner seal was aging and damaged, leading to mud leakage and pressure loss. Solution: Replace the worn liner with a new 6″1/4 liner (P/N 5499625) and replace the aging seal. After installation, the mud pump pressure returned to normal, and there was no leakage, ensuring continuous drilling operation. Key Takeaway: Regular inspection of liner wear is essential; replace liners in time when wear exceeds the standard to avoid more serious equipment damage.

Case 2: Bearing Overheating & Abnormal Noise

Fault Phenomenon: During onshore drilling, the drilling rig's power transmission system produced abnormal noise, and the CAGE BEARING LOWER 629269 was overheated (surface temperature exceeded 90℃), indicating potential bearing failure. Reason Analysis: The bearing was contaminated by dust and debris, leading to increased friction, and the lubricating grease was aged and deteriorated, losing lubrication effect. Solution: Disassemble the bearing, clean the installation position, replace the CAGE BEARING LOWER 629269 with a new one, and apply high-temperature resistant lubricating grease. After restarting, the abnormal noise disappeared, and the bearing temperature returned to the normal range (below 70℃). Key Takeaway: Regular cleaning and lubrication of bearings are critical, especially in dusty environments.

Case 3: Butterfly Valve Sealing Failure

Fault Phenomenon: The 12″ VLV BUTTERFLY valve (P/N J022127-5115311) in the mud circulation system had media leakage at the valve disc, and the valve could not be fully closed, affecting the control of mud flow. Reason Analysis: The valve disc's nickel plating was worn, and the BUNA-N seat was damaged due to long-term contact with high-solids mud. Solution: Replace the damaged valve disc and BUNA-N seat with matching spare parts, adjust the valve stem torque, and conduct a pressure test. After maintenance, the valve sealing performance was restored, and the mud flow control was normal. Key Takeaway: For valves in high-wear environments, regularly check the disc and seat wear, and replace them in time to avoid leakage.

Case 4: Pulsation Damper Failure

Fault Phenomenon: The mud pump's pressure fluctuation increased significantly, and the pulsation damper made abnormal noises, indicating that the damper was not working properly. Reason Analysis: The BLADDER FOR PULSATION DAMPENERS (P/N 6922-0003-00) was aged and cracked, losing its ability to absorb pressure fluctuations. Solution: Replace the damaged bladder with a new one, inflate it to the specified pressure (according to the equipment manual), and test run. After replacement, the mud pump pressure fluctuation was reduced to the normal range, and the abnormal noise disappeared.Key Takeaway: Regularly inspect the pulsation damper bladder for aging and damage, and replace it in time to protect the mud pump.

FAQ

Question

Answer

Are your spare parts compatible with OEM equipment from SKF, FAG, and DEMCO/USA?

Yes, all our spare parts are designed and manufactured according to OEM specifications and international standards, fully compatible with SKF, FAG, DEMCO/USA, ODRILL/USA, and other well-known brands of drilling rig equipment. We strictly match the dimensions, materials, and performance parameters of original parts to ensure direct installation and reliable operation without modifying the equipment.

How to confirm the correct part number for my drilling rig model?

You can provide us with your drilling rig model (such as F-1300 mud pump, F-1000 mud pump), the original part number, and the specific function of the part (e.g., mud pump liner, butterfly valve). Our professional technical team will verify the compatibility for you and recommend the correct spare parts. Additionally, our product list marks the part number and applicable equipment clearly for your quick reference.

What is the service life of your mud pump liners and pistons?

The service life of mud pump liners and pistons depends on the working environment (mud type, solids content, pressure) and maintenance frequency. Under normal onshore drilling conditions (medium solids content mud, regular maintenance), our liners have a service life of 800-1200 working hours, and pistons have a service life of 600-1000 working hours—30% longer than ordinary low-quality replacement parts. For harsh environments (high solids content, high pressure), we recommend shortening the inspection and replacement cycle.

Do you provide technical support for on-site installation and maintenance?

Yes, we have a professional technical team with rich on-site drilling equipment maintenance experience. We can provide technical guidance for the installation, replacement, and maintenance of spare parts through phone, video, or written documents. For complex fault problems, we can arrange technical personnel to provide on-site support (subject to on-site conditions and prior agreement), helping you resolve problems quickly and reduce equipment downtime.

What quality standards do your spare parts comply with?

Our spare parts strictly comply with international and domestic industry standards, including API (American Petroleum Institute) standards (API 7, API 601, API 607), GB (Chinese National Standard) (GB3452.1-82), and ISO standards (ISO 281 for bearings). Each part undergoes strict quality inspection (raw material inspection, precision machining inspection, performance test) before leaving the factory to ensure that it meets the rigorous requirements of drilling operations.

Procurement Guidance

Whether you need emergency replacement parts to resolve on-site equipment failures or regular maintenance components to ensure long-term stable operation of drilling rigs, we can provide you with high-quality, compatible, and cost-effective drilling rig spare parts. Our product portfolio covers all the parts listed in this guide, including bearings, mud pump components, valve parts, sealing elements, and auxiliary components, and we can also provide customized solutions according to your specific equipment models and operation needs.

To ensure that you purchase the correct parts, we recommend that you provide us with the part number, equipment model, and specific application scenario when placing an order. Our professional procurement and technical team will confirm the compatibility for you, provide detailed product parameters and quality inspection reports, and offer competitive pricing and comprehensive after-sales support. We are committed to becoming your reliable partner for drilling rig spare parts supply, helping you reduce procurement costs, improve maintenance efficiency, and ensure uninterrupted drilling operations.

 

contact us 

Emeil: [email protected]   whatsapp: +86 15275658619

Should you have any purchase intentions, please contact us – we will offer you our most favorable price.


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