71908 CB/P4A Super Precision Angular Contact Ball Bearing with 40 mm Bore Diameter and P4A Precision Grade for High Speed Operation
71908 CB/P4A 40×62×12 mm Super Precision High Capacity Single Row Angular Contact Ball Bearing - High Speed
Super-precision, high-speed B design, single row angular contact ball bearing.
The 71908 CB/P4A bearing features a bore diameter of 40 mm, outside diameter of 62 mm, and width of 12 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 | 71908 CB/P4A |
| Bearing Type | Angular Contact |
| Measurement Unit | Metric |
| Dimensions |
Inner Bore Diameter (d): 40 mm Inner Bore Diameter Tolerance: -0.006mm to 0 Outer Bore Diameter (D): 62 mm Outer Bore Diameter Tolerance: -0.007mm to 0 Width (B): 12 mm Width Tolerance: -0.2mm to 0 |
| Specifications |
Contact Angle: 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: 0.12 kg Matched Arrangement: No Universal Matching Bearing: No Preload: Not applicable |
| Load and Speed |
Dynamic Radial Load: 5400 N Static Radial Load: 4150 N Reference Speed For Grease (r/min): 30,000 rpm Limiting Speed For Oil (r/min): 45,000 rpm |
- Engineered for high-precision and high-performance applications
- 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 71908 CB/P4A high-precision angular contact ball bearing, with its P4A precision grade, is designed for demanding applications in high-speed and high-accuracy scenarios. It is ideal for:
- Machine tool spindles, including lathes and milling machines
- High-speed motors and turbine machinery
- Precision instruments like laser devices and coordinate measuring machines
- Robotic joints and automation equipment
CERTIFICATE: RoHS & REACH, IATF16949:2016
Features: High Speed and Stiffness, High Running Accuracy, High Load Carrying Capacity
Services: OEM&ODM Customized Services, Online Support, Professional Service
Samples: Please Contact Us
Size: Standard (Custom sizes available - please contact us)
Factory Manufacturer: Yes
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