S71919 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71919 CB/P4A Bearing Product Overview & Core Advantages
The S71919 CB/P4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. This single bearing features a 15° contact angle and is supplied with a preload, making it ideally suited for spindle arrangements where high stiffness and minimal runout are critical. Its P4 (ABEC-7) tolerance class ensures superior dimensional and running accuracy, while the phenolic cage and sealed design contribute to reliable, high-speed operation. This bearing is designed to accommodate combined loads, effectively handling radial loads and axial loads in one direction.
S71919 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CB | Specifies a specific internal clearance and preload grade. This configuration provides optimized rigidity for the bearing's application. |
| P4A | Denotes a tolerance class equivalent to P4 (ABEC-7). The "A" suffix indicates that the tolerance requirements for width and chamfer dimensions are less restrictive than a full P4 specification, offering a cost-effective high-precision solution. |
S71919 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class and supplied with a preload, this bearing delivers high system stiffness and precise shaft positioning, essential for minimizing deflection under load.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to the high limiting speed. The 15° contact angle provides an excellent balance between axial load capacity and speed capability.
- Sealed and Lubricated for Life: As a sealed bearing, it is protected from contamination and is pre-lubricated, offering a maintenance-free solution within its specified temperature range and operational limits.
- Robust Load Capacity: With a dynamic load rating of 4095 lbf and a static load rating of 4185 lbf, the bearing is capable of handling significant radial and one-direction axial loads.
S71919 CB/P4A Bearing Typical Application Areas
- Machine Tool Spindles for milling, grinding, and turning centers
- High-speed Precision Drives and Electric Motors
- Medical Equipment such as dental handpieces and small centrifuges
- Robotics and automation arm joints requiring high accuracy
- Aerospace instrumentation and auxiliary systems
