71905 FE/P4A Super Precision Angular Contact Ball Bearing with P4A Precision Grade and High Speed E Design 25x42x9 mm
71905 FE/P4A 25×42×9 mm Super Precision High Capacity Single Row Angular Contact Ball Bearing - High Speed
Super-precision, high-speed E design, single row angular contact ball bearing.
The 71905 FE/P4A bearing features a bore diameter of 25 mm, outside diameter of 42 mm, and width of 9 mm. With precise dimensions, high static load capacity, and P4A precision grade, it delivers superior performance and reliability for applications requiring high rotational accuracy and stability.
| Part Number | 71905 FE/P4A |
|---|---|
| Bearing Type | Angular Contact |
| Measurement Unit | Metric |
| Dimensions | |
| Inner Bore Diameter (d) | 25 mm |
| Inner Bore Diameter Tolerance | -0.005mm to 0 |
| Outer Bore Diameter (D) | 42 mm |
| Outer Bore Diameter Tolerance | -0.006mm to 0 |
| Width (B) | 9 mm |
| Width Tolerance | -0.2mm to 0 |
| Specifications | |
| Contact Angle | 18° (15°, 25°, 40° Available) |
| Material | Chrome Steel |
| Cage Material | Phenolic |
| Number of Rows | 1 Single Row |
| Seal Type | Open |
| Temperature Range | -30°C to 150°C |
| Lubrication | Grease or Oil |
| Tolerance Class | P4A better than P4 (ABEC-7) |
| Weight | 0.04 kg |
| Matched Arrangement | No |
| Universal Matching Bearing | No |
| Preload | Not applicable |
| Load and Speed | |
| Dynamic Radial Load | 5270 N |
| Static Radial Load | 2800 N |
| Reference Speed For Grease (r/min) | 46,500 rpm |
| Limiting Speed For Oil (r/min) | 71,500 rpm |
- Very tight tolerances suitable for precise machinery
- Ability to handle both radial and axial loads simultaneously
- High-speed operation with stability
- Low torque and friction for energy efficiency
- Enhanced rigidity for accuracy under heavy loads
- Durability with extended service life
- Effective performance across a wide temperature range
The 71905 FE/P4A bearing is a high-performance component extensively used across various industrial applications, including:
- Freezers, printing machines, cutting equipment, and vacuum dryers
- Machine tool spindles for machining centers, lathes, and grinders
- Semiconductor manufacturing and precision grinding
- Preservation equipment, cranes, and veterinary instruments
Its robust design supports operations in extreme conditions, offering high rigidity, long service life, and minimal heat generation. The hybrid ceramic design and precise preload features make it suitable for specialized applications requiring high speeds and low friction.
| CERTIFICATE | RoHS & REACH, IATF16949:2016 |
|---|---|
| Feature | High Speed and Stiffness, High Running Accuracy, High Load Carrying Capacity |
| Service | OEM&ODM Customized Services |
| Samples | Please Contact Us |
| Service | Online Support, Professional Service |
| Size | Standard, For custom sizes, please contact us |
| Factory Manufacturer | Yes |
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