S71906 ACE/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71906 ACE/P4A Bearing Product Overview & Core Advantages
The S71906 ACE/P4A is a single-row angular contact ball bearing engineered for precision applications requiring exceptional rotational accuracy and high-speed performance. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running precision and dimensional stability. Its key advantage lies in its ability to accommodate significant axial loads in one direction while simultaneously handling radial loads, making it ideal for applications demanding high rigidity and precise shaft positioning. The combination of a phenolic cage, preloaded design, and factory-applied lubrication ensures reliable operation at limiting speeds up to 37,000 rpm.
S71906 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series
- 19: Bearing size series code
- 06: Bore diameter code (06 × 5 = 30 mm)
- ACE: Specific internal design with 25° contact angle and optimized internal geometry
- P4A: P4 tolerance class with specific accuracy requirements for inner and outer ring runouts
S71906 ACE/P4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured from chrome steel with P4 (ABEC-7) precision class, ensuring minimal runout and vibration for smooth operation in demanding applications.
Optimized Load Capacity: The 25° contact angle provides excellent axial load carrying capacity in one direction while maintaining good radial load performance, with dynamic load rating of 1215 lbf and static load rating of 686 lbf.
High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at high speeds, supporting limiting speeds up to 37,000 rpm.
Thermal Stability: The phenolic cage material and optimized internal geometry provide stable performance across the operating temperature range of -30°C to 110°C.
Preload Availability: Available with preload for applications requiring enhanced stiffness and reduced deflection under load.
S71906 ACE/P4A Bearing Typical Application Areas
The S71906 ACE/P4A is ideally suited for precision applications including:
- Machine tool spindles and high-speed machining centers
- Precision grinding spindles requiring minimal runout
- High-frequency motor spindles and servo motors
- Medical equipment and dental handpieces
- Aerospace instrumentation and navigation systems
- Robotic joints and precision automation equipment
