7210 CD/P4ADBA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7210 CD/P4ADBA Bearing Product Overview & Core Advantages
The 7210 CD/P4ADBA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability under combined loads, effectively handling radial and axial forces from both directions. Manufactured to P4A tolerance class, it ensures minimal runout and is preloaded for extra light preload (Class A), making it ideal for high-speed spindles and other high-precision machinery where maximum rigidity and minimal deflection are critical.
7210 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| C | 15° contact angle |
| D | Duplex (Two single bearings as a set) |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| DB | Back-to-Back mounting arrangement |
| A | Extra light preload |
7210 CD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The back-to-back duplex design creates a wide effective spread between load centers, significantly increasing moment rigidity and operational stability under complex loading conditions.
Superior Load Capacity: The 15° contact angle and optimized internal geometry enable high radial dynamic load rating of 16,380 lbf while effectively supporting substantial axial loads in both directions.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling operation at limiting speeds up to 46,000 rpm. The precision-ground chrome steel components ensure smooth operation at high velocities.
Precision Performance: Manufactured to P4A tolerance standards with tight dimensional control on bore diameter (50 mm), outside diameter (90 mm), and width (40 mm), this bearing delivers exceptional running accuracy for demanding applications.
7210 CD/P4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring maximum rigidity and accuracy
- High-Speed Machining Centers: Applications demanding superior rotational precision at elevated speeds
- Precision Gearboxes: Industrial transmissions where minimal deflection and high positional accuracy are essential
- Robotic Arm Joints: Precision automation equipment requiring high moment stiffness and reliability
- Medical Equipment: High-speed dental handpieces and laboratory instrumentation
