Ball Bearings
- Deep Groove Ball Bearing
- Angular Contact Ball Bearing
- Self-aligning Ball Bearing
- Insert Ball Bearing
- Thrust Ball Bearing
- Flange Ball Bearing
- Thin Section Ball Bearing
- Linear Ball Bearing
- Electricity Insulated Ball Bearing
- CNC Spindle Ball Bearing
- Engraving Machine Spindle Ball Bearing
- Special Bearing For Textile Machine
- Crankcase Bearings for Racing Motorcycles
- Rubber/Plastic Coated Bearings
Roller Bearings
- Cylindrical Roller Bearings
- Self-aligning Roller Bearings
- Thrust Roller Bearings
- Tapered Roller Bearings
- Cross Roller Bearings
Technical Ceramics
- Ceramic Rings
- Ceramic Nozzle
- Ceramic Valve
- Ceramic Bolts/Screw
- Ceramic End Effector
Bearing Parts & Accessories
- Balls
- Rollers
- Cages (Retainer)
- Housing/Seat
Technical Data
ID Ø (mm): 3mm to 180mm
ODØ (mm): 7mm to 600mm
max. Operating Temperature: +160°C
min. Operating Temperature: -30°C
Tolerance Available: P0,P6,P5
Clearance Available: C0, C3,C4 and C5
Seal: Open or NBR
Type of lubrication: Grease
Ceramic vs. Steel Bearings
| Feature | 440 Stainless Steel Bearing | GCr15 Steel Bearing |
|---|---|---|
| Material | AISI 440 (440C) martensitic stainless steel | High-carbon chromium bearing steel (equivalent to SAE 52100) |
| Hardness | High hardness after heat treatment, slightly lower than GCr15 | Very high hardness (HRC 60–65), excellent wear resistance |
| Corrosion Resistance | Good – resistant to water, steam, weak acids/alkalis, mild chemicals | Poor – easily corrodes in humid or corrosive environments |
| Strength & Load Capacity | Strong, but slightly less load capacity compared to GCr15 | Very strong, excellent load capacity |
| Magnetic Properties | Magnetic | Magnetic |
| Temperature Resistance | Performs well in moderate temperatures (up to ~250 °C) | Can handle high operating temperatures (up to ~300 °C with proper lubrication) |
| Service Life | Long in corrosive/moist environments | Long in clean, dry, lubricated environments |
| Applications | Food processing, medical devices, chemical equipment, marine use | Automotive, industrial machinery, aerospace, precision instruments |
| Cost | Higher (due to stainless steel material) | Lower (widely used standard bearing steel) |
Flange Ball Bearing Made of Stainless Steel 440
Material:
Rings and balls: 440 stainless steel
Retainer: 304 stainless steel
Seal: NBR or FKM
Features:
✅ High Hardness & Strength – Made from AISI 440 (440C) stainless steel, offering superior wear resistance.
✅ Excellent Corrosion Resistance – Performs well in mildly corrosive environments (water, steam, weak acids, and alkalis)
✅ Good Fatigue Life – Capable of sustaining heavy loads and long service under proper lubrication
✅ High Precision Capability – Can be manufactured to tight tolerances for demanding applications
✅ Temperature Resistance – Suitable for both low and moderately high operating temperatures
✅ Magnetic Material – 440 stainless steel is martensitic, so the bearing is magnetic
✅ Versatile Applications – Commonly used in food processing equipment, medical instruments, chemical machinery, and marine environments