S71906 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71906 CB/P4A Bearing Product Overview & Core Advantages
The S71906 CB/P4A is a high-precision single row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and rigidity. This precision bearing is designed to accommodate combined loads, primarily thrust loads in one direction, while also supporting significant radial loads. Its compact cross-section, with a 9 mm width, makes it ideal for space-constrained, high-speed spindles. Manufactured to a P4 (ABEC-7) tolerance class and featuring a phenolic cage, it delivers superior running accuracy, high-speed capability, and thermal stability, ensuring reliable performance in high-precision machinery.
S71906 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Indicates a series of high-precision angular contact ball bearings. |
| 1906 | Denotes the bearing size: 30 mm bore, 47 mm OD, 9 mm width. |
| CB | Specifies a 15° contact angle and a specific internal design (clearance and preload) optimized for high rigidity and moderate speed. |
| P4A | Signifies the tolerance class P4 (ABEC-7), guaranteeing extremely tight dimensional and running accuracy for precision applications. |
S71906 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single row design with a 15° contact angle and P4 tolerance provides excellent rotational accuracy and system stiffness, crucial for minimizing deflection under load.
- Optimized Load Capacity: Engineered to handle combined loads effectively, with a high thrust load capacity in one direction. The dynamic load rating of 1098 lbf ensures reliable operation under demanding conditions.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, lowers friction, and enables a high limiting speed of 40,000 rpm. This makes it an excellent choice for high-speed spindles.
- Pre-Lubricated and Sealed: The bearing comes lubricated and sealed from the factory, protecting against contamination and providing long-term, maintenance-free operation within its specified temperature range.
S71906 CB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Drives: High-frequency motors, servo motors, and spindle drives.
- Aerospace & Defense: Gyroscopes, navigation systems, and radar equipment.
- Medical Equipment: Dental handpieces, laboratory centrifuges, and imaging devices.
