71915 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71915 CB/HCP4A Bearing Product Overview & Core Advantages
The 71915 CB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Its design is optimized to support combined loads, handling significant radial loads alongside axial loads in one direction. A key feature is the availability of preload, which eliminates internal clearance to enhance system rigidity and positioning accuracy. Manufactured to the exacting P4 (ABEC-7) tolerance class, this bearing is ideal for high-speed, high-reliability machinery where minimal runout and consistent performance are critical.
71915 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Standard bearing series designation, indicating a high-precision angular contact type. |
| CB | Specific internal design and clearance for preload application. |
| HC | Indicates the use of Hybrid Ceramic components (Ceramic balls). |
| P4A | Specifies the tolerance class P4 (ABEC-7) with additional accuracy requirements for dimensional and running accuracy. |
71915 CB/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction and heat generation. This construction enables higher limiting speeds (30,000 rpm), provides electrical insulation, and offers superior performance in lubricant-starved conditions.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent dimensional stability and low centrifugal forces at high speeds, contributing to smooth operation and extended service life.
15° Contact Angle & Preload: The 15° contact angle is optimized for high-speed applications requiring high rigidity. The availability of preload enhances system stiffness, reduces vibration, and improves rotational accuracy.
Precision Manufacturing: Adherence to the P4 tolerance class guarantees tight control over bearing dimensions (bore, OD, width) and running accuracy, ensuring predictable performance in the most demanding applications.
71915 CB/HCP4A Bearing Typical Application Areas
The 71915 CB/HCP4A is ideally suited for high-performance machinery where speed, precision, and reliability are paramount. Key sectors include:
- High-Speed Machine Tool Spindles: For milling, grinding, and drilling centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
