71908 CEGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71908 CEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.1 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.004mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2194 lbf
Radial static load rating
1350 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71908 CEGA/P4A Bearing Product Overview & Core Advantages
The 71908 CEGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its extra light preload (Class A) minimizes friction and heat generation, making it ideal for high-speed spindles. As a Universal Matchable (SU) bearing, it can be universally paired with other bearings of the same type for simplified mounting and optimal performance in preloaded arrangements.
71908 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71908 | Basic bearing designation, indicating a super-precision, light series angular contact bearing with a 40mm bore. |
| CE | Contact angle of 15°, optimized for high-speed operation and combined loads. |
| GA | Indicates Universal Matchable (SU) pairing and Extra Light (Class A) preload. |
| P4A | The tolerance class, denoting very high precision levels for running accuracy and dimensional tolerances. |
71908 CEGA/P4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The phenolic resin cage and 15° contact angle are engineered for low friction and high limiting speeds, reaching up to 56,000 rpm.
- Superior Rigidity and Accuracy: Manufactured to P4A precision standards with tight dimensional tolerances, this bearing provides excellent rotational accuracy and system stiffness, crucial for machining precision.
- Optimized Load Capacity: The angular contact design efficiently supports combined radial and axial loads in one direction.
- Pre-Lubricated for Immediate Use: Comes pre-lubricated, ensuring immediate operation and protection during the initial run-in period within its specified temperature range of -30°C to 110°C.
71908 CEGA/P4A Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, dental handpieces, and other small, high-speed precision equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
