S71908 CB/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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S71908 CB/P4ADGA Bearing Product Overview & Core Advantages
The S71908 CB/P4ADGA is a super-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and high-speed performance. This universally matchable bearing features a 15° contact angle and extra light preload (Class A), making it ideal for spindle arrangements where minimal deflection and high rigidity are critical. Its sealed design and P4A tolerance class ensure reliable operation and precise rotational accuracy under combined radial and axial loads.
S71908 CB/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71908 | Super-precision angular contact ball bearing series with 40mm bore |
| CB | 15° contact angle and specific internal design |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| DGA | Sealed bearing with grease filling |
S71908 CB/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The double-row angular contact design provides superior stiffness and minimal runout, supported by P4A tolerance class for exceptional rotational accuracy. The phenolic cage ensures stable operation at high speeds.
Optimized Load Capacity: With a 15° contact angle and universal matching capability (SU), this bearing efficiently handles combined radial and axial loads in either direction, making it suitable for preloaded arrangements.
High-Speed Performance: The lightweight phenolic cage and optimized internal geometry enable limiting speeds up to 41,000 rpm, while the sealed design retains lubrication for consistent performance.
Maintenance-Free Operation: Factory-sealed with high-quality grease, the bearing offers extended service life without relubrication, operating reliably within a temperature range of -30°C to 110°C.
S71908 CB/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding machines
- Precision Instrumentation - Measuring equipment and optical devices
- High-Speed Motors - Spindle motors and servo drives
- Medical Equipment - Dental handpieces and laboratory instruments
- Aerospace Components - Gyroscopes and navigation systems
