7210 CD/P4ATBTC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7210 CD/P4ATBTC Bearing Product Overview & Core Advantages
The 7210 CD/P4ATBTC is a precision angular contact ball bearing specifically designed for demanding applications requiring exceptional rotational accuracy and rigidity. This triplex back-to-back (TBT) matched set delivers superior performance under combined loads and high-speed operation. Its P4A tolerance class ensures ultra-precise running, making it ideal for high-reliability machinery where minimal runout and vibration are critical. The matched set configuration provides high rigidity and stable preload, offering consistent performance in complex load scenarios.
7210 CD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
- 7210: Basic bearing designation (Bore: 50mm, OD: 90mm, Width: 60mm)
- C: 15° contact angle, optimized for high-speed applications with moderate axial load capacity
- D: Indicates a moderate preload (Class C) applied to the bearing set
- P4A: Denotes an ultra-precision tolerance class for exceptional running accuracy
- TBT: Specifies a Triplex Back-to-Back arrangement of three matched bearings
- C: Phenolic cage material, suitable for high-speed operation
7210 CD/P4ATBTC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The triplex back-to-back arrangement creates an extremely rigid bearing system capable of withstanding significant combined radial and axial loads from multiple directions. The moderate preload (Class C) eliminates internal clearance, ensuring precise shaft positioning and minimal deflection under load.
High-Speed Performance: The combination of 15° contact angle and phenolic resin cage enables excellent high-speed capabilities, with a limiting speed of 41,000 rpm. The optimized internal geometry reduces friction and heat generation at elevated speeds.
Precision Engineering: Manufactured to P4A tolerance class, this bearing guarantees exceptional dimensional accuracy and running precision. The chrome steel construction of rings and balls provides superior durability and fatigue resistance under demanding operating conditions.
7210 CD/P4ATBTC Bearing Typical Application Areas
The 7210 CD/P4ATBTC is ideally suited for high-precision, high-speed machinery including:
- Machine Tool Spindles - Providing high rigidity and accuracy for milling, grinding, and turning centers
- Precision Gearboxes - Supporting high rotational speeds with minimal vibration
- High-Speed Motors and Spindles - Delivering stable performance in demanding industrial applications
- Aerospace Components - Meeting stringent precision requirements in critical systems
- Medical Equipment - Ensuring reliable operation in diagnostic and surgical devices
