71964 CDMA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71964 CDMA/P4A Bearing Product Overview & Core Advantages
The 71964 CDMA/P4A is a single-row angular contact ball bearing engineered for precision applications requiring exceptional rotational accuracy and rigidity. This P4 (ABEC-7) tolerance class bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, making it ideal for high-speed spindles and precision machinery. Its phenolic resin cage and optimized internal geometry contribute to superior high-speed performance and smooth operation. The bearing is supplied pre-lubricated and is available with a preload for enhanced system stiffness.
71964 CDMA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71964 | Basic bearing series and size designation. |
| C | Specifies a 15° contact angle, optimized for high thrust load capacity. |
| DM | Indicates a matched arrangement of two bearings for precise preload and performance. |
| A | Signifies that the bearing is supplied with a specific preload for high rigidity. |
| P4 | Denotes a high-precision tolerance class (equivalent to ABEC-7). |
| A | Further specification for internal clearance or preload grade. |
71964 CDMA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class with a 15° contact angle and available preload, this bearing provides exceptional system stiffness and running accuracy, minimizing deflection under load.
- Superior Load Capacity: The optimized raceway geometry and high-grade chrome steel construction enable it to support high radial dynamic load ratings of 84,825 lbf and static load ratings of 139,500 lbf, effectively handling combined loads.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures low centrifugal forces and excellent dimensional stability at high speeds, contributing to a high limiting speed. The open design facilitates efficient lubrication management.
- Durability and Reliability: Components made from high-purity chrome steel offer excellent wear resistance and fatigue life. The bearing is pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
71964 CDMA/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for applications demanding high speed, accuracy, and rigidity, including:
- Machine Tool Spindles: For CNC milling centers, grinding spindles, and lathes.
- High-Speed Motors and Spindles: In PCB drilling, precision machining, and dental handpieces.
- Precision Gearboxes and Transmissions: Where accurate shaft positioning is critical.
- Industrial Pumps and Compressors: For handling axial and radial loads in rotating assemblies.
