Products
Specialized in three core bearing categories — engineered for performance, built for reliability
Water Pump Bearings
Deep Groove Ball Bearings
One-Way Bearings
💧 Water Pump Bearings
Purpose – built for automotive engine cooling water pumps. Our water pump bearings feature high – speed stability, long service life, and low – noise operation — designed to withstand the demanding conditions of modern engine cooling systems. Additionally, the noise level of our products can be controlled within 40 decibels. What’s more, we can provide customized services according to customers’ drawings.
High - speed and Low - noise Performance
The shaft - mounted bearing is an important component of the water pump. Specifically designed for engine cooling pumps, it operates stably with minimal vibration. The noise of batch products can be controlled below 38dB. It features high rotational speed and load - bearing capacity. Under normal circumstances, it is required to reach 6000 r/min and has a double - row structure.
Materials and Processes
The steel used in our bearings (including shafts, outer rings, steel balls, and rollers) is high - carbon chromium bearing steel (GCr15). After heat treatment, the hardness of the shaft raceway is 58 - 62HRC, the hardness of the outer ring raceway is 60 - 64HRC, and the hardness of the steel balls and rollers is 61 - 65HRC. Commonly used high - temperature greases include SUPER - N, Esso N3, Lubriplate MP1003. We can also customize the grease type according to requirements to ensure reliable operation in engine bay environments up to 120°C..
Other Accessories and Processes
The material of the cage is reinforced nylon 66, sourced from imported materials of BASF or DuPont. The sealing ring generally uses nitrile rubber. When the operating environment temperature is higher than 120℃, a fluororubber sealing ring is selected. For shaft - mounted bearings of water pumps, without special requirements, the original radial clearance of the complete bearing is 15 - 35μm.
Product Models
| Model | Shaft Dia. (mm) | Outer Dia. (mm) | Total Length (mm) | Seal Type | Max Speed (rpm) | Application | |
|---|---|---|---|---|---|---|---|
| WP-1510 | 15 | 30 | 105 | Double Seal | 8,000 | Passenger car water pumps | Inquire |
| WP-1712 | 17 | 35 | 120 | Double Seal | 7,500 | Sedan / compact car water pumps | Inquire |
| WP-2015 | 20 | 40 | 135 | Double Seal | 7,000 | SUV / light truck water pumps | Inquire |
| WP-2517 | 25 | 47 | 148 | Double Seal | 6,500 | Commercial vehicle water pumps | Inquire |
| WP-3018 | 30 | 52 | 155 | Double Seal | 6,000 | Heavy-duty truck water pumps | Inquire |
| WP-3520 | 35 | 60 | 170 | Double Seal | 5,500 | Construction machinery water pumps | Inquire |
📋 Selection Guide — Water Pump Bearings
- Shaft diameter must match the water pump impeller shaft exactly (interference fit recommended)
- Outer diameter must match the pump housing bore (press fit specification)
- Total length determines the installation space — measure both bearing seat positions
- Coolant type affects seal material selection (standard ethylene glycol vs. OAT coolant)
- Operating temperature above 100°C requires high-temperature grease and special seals
- Provide your water pump model or vehicle application and we will match the correct bearing for you
🚗 Typical Applications
Passenger Vehicles
Sedan & hatchback engine cooling
Commercial Vehicles
Truck & bus engine cooling
Agricultural Machinery
Tractor & harvester cooling
Construction Equipment
Excavator & loader cooling
Stationary Engines
Generator & pump station cooling
⚙️ Deep Groove Ball Bearings
The most versatile bearing type, suitable for a wide range of industrial applications. Our deep groove ball bearings cover bore diameters from 10mm to 60mm, available in 6000, 6200, and 6300 series with various seal and clearance options.
Low Noise & Vibration
Precision-ground raceways and super-finishing process ensure low-noise operation, meeting Z1/Z2 vibration grades.
Full Size Coverage
Bore diameter 10-60mm across 6000 (light), 6200 (medium), and 6300 (heavy) series — covering most common applications.
Multiple Seal Options
Open (ZZ), rubber seal (2RS), and non-contact seal (RZ) configurations available for different working environments.
6000 Series — Light Duty (Bore 10-35mm)
| Model | Bore d (mm) | Outer D (mm) | Width B (mm) | Cr (kN) | C0r (kN) | Limit Speed (rpm) | |
|---|---|---|---|---|---|---|---|
| 6000-2RS | 10 | 26 | 8 | 4.58 | 1.98 | 26,000 | Inquire |
| 6001-2RS | 12 | 28 | 8 | 5.10 | 2.38 | 24,000 | Inquire |
| 6002-2RS | 15 | 32 | 9 | 5.60 | 2.85 | 22,000 | Inquire |
| 6004-2RS | 20 | 42 | 12 | 9.38 | 5.02 | 18,000 | Inquire |
| 6005-2RS | 25 | 47 | 12 | 11.2 | 6.30 | 16,000 | Inquire |
| 6006-2RS | 30 | 55 | 13 | 13.5 | 8.30 | 14,000 | Inquire |
| 6008-2RS | 40 | 68 | 15 | 17.0 | 11.8 | 11,000 | Inquire |
6200 Series — Medium Duty (Bore 10-60mm)
| Model | Bore d (mm) | Outer D (mm) | Width B (mm) | Cr (kN) | C0r (kN) | Limit Speed (rpm) | |
|---|---|---|---|---|---|---|---|
| 6200-2RS | 10 | 30 | 9 | 5.10 | 2.38 | 24,000 | Inquire |
| 6201-2RS | 12 | 32 | 10 | 6.82 | 3.05 | 22,000 | Inquire |
| 6202-2RS | 15 | 35 | 11 | 7.65 | 3.72 | 20,000 | Inquire |
| 6203-2RS | 17 | 40 | 12 | 9.58 | 4.78 | 18,000 | Inquire |
| 6204-2RS | 20 | 47 | 14 | 12.8 | 6.65 | 16,000 | Inquire |
| 6205-2RS | 25 | 52 | 15 | 14.0 | 7.85 | 13,000 | Inquire |
| 6206-2RS | 30 | 62 | 16 | 19.5 | 11.2 | 11,000 | Inquire |
| 6207-2RS | 35 | 72 | 17 | 25.5 | 15.2 | 9,500 | Inquire |
| 6208-2RS | 40 | 80 | 18 | 29.5 | 18.0 | 8,500 | Inquire |
| 6210-2RS | 50 | 90 | 20 | 35.0 | 23.2 | 7,500 | Inquire |
| 6212-2RS | 60 | 110 | 22 | 47.8 | 32.8 | 6,300 | Inquire |
6300 Series — Heavy Duty (Bore 10-60mm)
📋 Selection Guide — Deep Groove Ball Bearings
- Series selection: 6000 (light load/high speed) → 6200 (general purpose) → 6300 (heavy load/low speed)
- Clearance: C3 (standard for electric motors), C4 (high temperature), C2 (precision positioning)
- Seal type: Open (high speed, relubricable) / ZZ shield (dust protection) / 2RS seal (waterproof, sealed for life)
- Vibration grade: Z1 (standard), Z2 (low noise), Z3 (ultra-low noise for precision equipment)
- Fits: Shaft tolerance usually j5/k5 (rotating inner ring), housing H7/J7 (stationary outer ring)
- Don't see your model? Contact us — we supply the full range of standard and non-standard sizes
🏭 Typical Applications
Electric Motors
AC/DC motors, servo motors
Fans & Blowers
Industrial ventilation systems
Pumps
Centrifugal & submersible pumps
Gearboxes
Speed reducers & transmissions
Agricultural Machinery
Tractors, harvesters, tillers
Home Appliances
Washing machines, AC units
Conveyor Systems
Material handling equipment
Power Tools
Drills, grinders, saws
🔄 One-Way Bearings (Clutch Bearings)
Specialized one-way clutch bearings designed for washing machine clutch mechanisms. These bearings allow free rotation in one direction while locking in the reverse direction — enabling the critical wash/spin mode switching in automatic washing machines.
Precise One-Way Clutch
Wedge-type clutch mechanism ensures instant engagement and smooth freewheeling with zero backlash.
High Torque Capacity
Engineered to handle the high torque loads during washing machine spin cycles (up to 130 N·m).
Quiet Operation
Optimized wedge geometry and precision manufacturing minimize noise during clutch engagement and release.
Product Models
🔧 How One-Way Bearings Work in Washing Machine Clutches
- Wash mode: The motor drives the pulsator to rotate forward and reverse. The one-way bearing freewheels, allowing the inner tub to remain stationary while only the pulsator agitates.
- Spin mode: The motor reverses direction. The one-way bearing locks, coupling the clutch shaft to the inner tub — causing the tub to spin at high speed for water extraction.
- Critical installation note: The locking direction must match the spin rotation direction. Incorrect installation will prevent the spin cycle from working.
- Common failure symptoms: Washer won't spin, loud noise during spin cycle, or clothes still soaking wet after spin — often indicates one-way bearing failure.
📋 Selection Guide — One-Way Bearings
- CSK-6005: Suitable for compact and standard top-load washing machines (6-8 kg capacity)
- CSK-6205: Suitable for large-capacity washing machines (8-12 kg) and front-load washers with higher spin torque
- Torque rating: Select a bearing with max torque at least 1.5× the expected spin cycle torque for safety margin
- Lubrication: Use only grease specified for clutch applications — incorrect grease causes slippage
- Need a custom one-way bearing for a specific washing machine model? Contact us with your specifications
🧺 Typical Applications
Top-Load Washers
Automatic & semi-automatic washing machines
Front-Load Washers
Drum clutch mechanisms
Starter Motors
Automotive engine starters
Textile Machinery
Unidirectional transmission systems
Conveyor Systems
One-way sorting & feeding mechanisms
Need a Specific Bearing Model?
Send us your requirements — our technical team will respond within 24 hours with pricing and specifications