71913 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
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71913 CE/HCP4A Bearing Product Overview & Core Advantages
The 71913 CE/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Positioned in the P4 (ABEC-7) tolerance class, it is designed to handle combined loads, primarily thrust loads in one direction, with a 15° contact angle that optimizes performance for high-speed operation. Its compact design, featuring a 65 mm bore and 13 mm width, makes it ideal for space-constrained, high-reliability assemblies. The use of ceramic balls significantly reduces friction and heat generation, contributing to an extended service life and enhanced limiting speed of 38,000 rpm.
71913 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing series and size designation (65mm bore, 90mm OD, 13mm width). |
| CE | Indicates a 15° contact angle, optimized for high-speed applications. |
| HC | Signifies the use of Hybrid Ceramic balls (silicon nitride), which reduce weight and friction. |
| P4A | Denotes a P4 (ABEC-7) tolerance class with specific running accuracy requirements. |
71913 CE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls results in lower centrifugal forces, reduced operating temperature, and dramatically increased limiting speed and service life compared to all-steel bearings.
- High-Speed Phenolic Cage: The phenolic resin cage is lightweight and possesses excellent slip characteristics, providing stability and low torque at very high rotational speeds.
- Precision & Rigidity: Manufactured to P4 tolerance class, this bearing ensures minimal runout and high positional accuracy. The angular contact design provides excellent rigidity when subjected to thrust loads.
- Preload Availability: The bearing is supplied with a preload, which eliminates internal clearance, increases system stiffness, and improves rotational accuracy for demanding applications.
71913 CE/HCP4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace & Defense Actuators
- Semiconductor Manufacturing Equipment
