71919 CB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71919 CB/P4A Bearing Product Overview & Core Advantages
The 71919 CB/P4A is a single-row angular contact ball bearing designed for applications requiring exceptional precision and high-speed performance. Engineered to withstand combined radial and axial loads simultaneously, this bearing features a 15° contact angle for optimal load distribution. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running accuracy and rotational stability. Its compact design and preload availability make it ideal for high-rigidity applications where minimal deflection is critical.
71919 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing designation indicating size series and bore diameter (95mm) |
| CB | Specific internal design with optimized contact angle and internal clearance |
| P4A | Precision tolerance class equivalent to ABEC-7 with specific accuracy requirements |
71919 CB/P4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4 tolerance class with bore diameter tolerance of -0.008mm to 0 and outside diameter tolerance of -0.009mm to 0, ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 15° contact angle configuration enables efficient handling of combined loads, with dynamic load rating of 4095 lbf and static load rating of 4185 lbf for reliable performance under demanding conditions.
High-Speed Capability: Featuring a phenolic resin cage that reduces centrifugal forces and friction, enabling operation at limiting speeds up to 20,000 rpm while maintaining dimensional stability.
Enhanced Rigidity: The preload availability allows for controlled axial displacement, significantly increasing system stiffness and reducing deflection in precision applications.
Premium Material Selection: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and durability across the operating temperature range of -30° to 110°C.
71919 CB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional running accuracy
- High-Speed Motors: Electric motor applications demanding reliable performance at elevated rotational speeds
- Precision Instrumentation: Measuring equipment and analytical instruments where minimal vibration is critical
- Aerospace Components: Guidance systems and aircraft instrumentation requiring reliable angular contact bearing performance
- Medical Equipment: High-speed dental handpieces and surgical tools demanding precision and reliability
