71900 ACD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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71900 ACD/P4A Bearing Product Overview & Core Advantages
The 71900 ACD/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to simultaneously support combined radial and axial loads in one direction, this bearing features a 25° contact angle for optimal thrust capacity. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running accuracy and is preloaded for enhanced system stiffness and reduced vibration. Its compact design with a 6mm width makes it ideal for space-constrained, high-speed applications up to 110,000 rpm.
71900 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71900 | Basic bearing series and size designation (10mm bore, 22mm OD) |
| AC | Angular Contact design with a 25° contact angle |
| D | High contact angle for increased axial load capacity |
| P4A | P4 (ABEC-7) tolerance class with specific accuracy requirements |
71900 ACD/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: The single-row angular contact design with a 25° contact angle provides optimal stiffness and running accuracy. The bearing is supplied preloaded, eliminating internal clearance and ensuring precise shaft positioning and minimal deflection under load.
Superior Load Capacity: Engineered to handle combined radial and axial loads simultaneously. With a dynamic load rating of 544 lbf and static load rating of 238 lbf, it delivers reliable performance in demanding applications.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and reduced friction, contributing to the bearing's limiting speed of 110,000 rpm. This makes it suitable for high-speed spindle applications.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance across the operating temperature range of -30° to 110°C.
71900 ACD/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- High-Speed Electric Motors - Industrial motors and servo drives
- Precision Instrumentation - Measuring equipment and optical devices
- Medical Equipment - Dental handpieces and laboratory instruments
- Aerospace Components - Guidance systems and auxiliary power units
