71901 ACD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71901 ACD/P4A Bearing Product Overview & Core Advantages
The 71901 ACD/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and high-speed operation. Engineered to P4 (ABEC-7) tolerance class, it delivers exceptional running accuracy. Its key advantage lies in its ability to support combined loads (radial and axial) simultaneously, with the 25° contact angle providing excellent axial load capacity. The phenolic cage and preload availability contribute to its high rigidity and stable performance in demanding conditions.
71901 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71901 | Basic bearing designation indicating the bearing size (12mm bore, 24mm OD, 6mm width) |
| ACD | Angular Contact Design with 25° contact angle and optimized internal geometry |
| P4A | Indicates P4 (ABEC-7) tolerance class with specific running accuracy requirements |
71901 ACD/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4 tolerance class with tight dimensional control (bore tolerance: -0.004mm to 0), ensuring minimal runout and vibration for precision applications.
Optimized Load Capacity: The 25° contact angle enables efficient handling of combined radial and axial loads, with dynamic load rating of 574 lbf and static load rating of 266 lbf.
High-Speed Performance: The phenolic resin cage provides excellent dimensional stability and low friction, contributing to the limiting speed of 95,000 rpm.
Preload Capability: Available preload options allow for increased rigidity and reduced deflection in high-precision applications.
Material Quality: Constructed from chrome steel for both rings and balls, ensuring high durability and wear resistance.
71901 ACD/P4A Bearing Typical Application Areas
The 71901 ACD/P4A is ideally suited for:
- High-speed spindle systems in precision machining centers
- Medical and dental equipment requiring quiet, precise operation
- Robotics and automation applications demanding high positional accuracy
- Aerospace instrumentation and control systems
- Optical positioning systems and precision measuring equipment
