71828 CD/HCP4
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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71828 CD/HCP4 Bearing Product Overview & Core Advantages
The 71828 CD/HCP4 is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and speed capability. This metric precision bearing features a P4 (ABEC-7) tolerance class, ensuring minimal runout and superior dimensional stability. Its primary advantage lies in its ability to accommodate high combined loads (radial and axial) simultaneously, making it ideal for demanding applications where high rigidity and positional accuracy are critical. The optimized contact angle of 15° provides excellent axial load capacity while maintaining high-speed performance.
71828 CD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71828 | Basic bearing designation indicating dimensions: 140mm bore, 175mm OD, 18mm width |
| CD | High contact angle (15°) optimized for axial load capacity |
| HC | Hybrid ceramic construction with ceramic balls and steel rings |
| P4 | Precision tolerance class equivalent to ABEC-7 for high accuracy applications |
71828 CD/HCP4 Bearing Structural Features & Performance Benefits
Hybrid Construction: The combination of chrome steel rings and ceramic balls provides superior performance characteristics including reduced friction, higher stiffness, and extended service life under demanding conditions.
High-Speed Capability: The phenolic cage material and optimized internal geometry enable exceptional limiting speeds up to 12,000 rpm, making this bearing suitable for high-speed spindle applications.
Precision Performance: Manufactured to P4 tolerance class with tight dimensional controls (bore tolerance: -0.01mm to 0, OD tolerance: -0.01mm to 0) ensuring minimal vibration and precise rotational accuracy.
Load Capacity: With a dynamic load rating of 10,102 lbf and static load rating of 13,950 lbf, this bearing delivers reliable performance under significant combined radial and axial loads.
Thermal Stability: The ceramic balls provide excellent thermal characteristics, maintaining dimensional stability across the operating temperature range of -30°C to 110°C.
71828 CD/HCP4 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles requiring exceptional accuracy and rigidity
- High-Speed Motors: Electric motors and generators operating at elevated speeds where precision and reliability are critical
- Aerospace Systems: Aircraft auxiliary power units and flight control systems demanding high performance and reliability
- Medical Equipment: High-speed dental handpieces and surgical tools requiring precision and smooth operation
- Robotics & Automation: Precision robotic joints and automation equipment where accuracy and high-speed capability are essential
