7210 ACD/HCP4ATBTA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
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7210 ACD/HCP4ATBTA Bearing Product Overview & Core Advantages
The 7210 ACD/HCP4ATBTA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and speed performance. This triplex matched set in a back-to-back (TBT) arrangement provides superior stiffness and stability under complex loading conditions. Manufactured to P4A super-precision tolerance and featuring a phenolic cage with ceramic balls, it is engineered for high-speed operation and long service life in precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7210 | Basic bearing series with 50mm bore, 90mm OD |
| ACD | Angular Contact Design with 25° contact angle |
| HC | Hybrid Ceramic (ceramic balls with steel rings) |
| P4A | Super precision tolerance class |
| TBT | Triplex Back-to-Back matched arrangement |
| A | Extra light preload classification |
7210 ACD/HCP4ATBTA Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Stability: The triplex back-to-back configuration creates a highly rigid bearing system that effectively resists moment loads and maintains precise shaft positioning under heavy combined loads.
Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal forces) and phenolic cage (lightweight, self-lubricating) enables operation at limiting speeds up to 46,000 rpm.
Exceptional Precision: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for precision applications.
Optimized Load Capacity: The 25° contact angle design provides excellent capacity for both radial and axial loads, with dynamic load rating of 20,768 lbf and static load rating of 22,050 lbf.
7210 ACD/HCP4ATBTA Bearing Typical Application Areas
- High-speed machine tool spindles for milling and grinding operations
- Precision robotics and automation equipment
- Medical device manufacturing equipment
- Aerospace components and testing apparatus
- Semiconductor manufacturing equipment
- High-performance electric motors and generators
