7210 CD/P4ADBB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7210 CD/P4ADBB
Basic Information
System of measurement
Metric
Weight
0.92 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
16380 lbf
Radial static load rating
15300 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 199.53
/ each
In Stock
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7210 CD/P4ADBB Bearing Product Overview & Core Advantages
The 7210 CD/P4ADBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This metric system bearing features a back-to-back (DB) matched arrangement and a Light preload (Class B), enabling it to handle combined loads—significant radial and axial loads in both directions—simultaneously. Manufactured to the exacting P4A tolerance class, it delivers superior running accuracy, making it ideal for high-precision and high-rigidity applications such as machine tool spindles.
7210 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7210 CD/P4ADBB provides detailed technical specifications:
- 7210: Basic bearing designation (Bore: 50 mm, OD: 90 mm, Width: 40 mm)
- C: 15° contact angle, optimized for high-speed operation and moderate axial load capacity.
- D: Indicates the bearing is part of a duplex pair (two bearings).
- P4A: Denotes an ultra-precision tolerance class with enhanced running accuracy and dimensional stability.
- DB: Specifies the back-to-back mounting arrangement, which provides high moment rigidity and stability under complex loads.
- B: Indicates the Light preload level, minimizing deflection and ensuring precise shaft positioning.
7210 CD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring exceptional operational stability.
- Superior Load Capacity: With a 15° contact angle and a dynamic load rating of 16,380 lbf, this bearing is engineered to handle demanding combined radial and axial loads.
- Precision & High-Speed Performance: The P4A tolerance class guarantees minimal runout and vibration. Combined with the optimized geometry and a phenolic resin cage, it supports a high limiting speed of 46,000 rpm, making it a true high-speed bearing.
- Optimized Material Selection: Components made from chrome steel for both rings and balls ensure high durability and fatigue resistance. The phenolic cage contributes to smooth operation at high speeds with low friction.
7210 CD/P4ADBB Bearing Typical Application Areas
This precision angular contact bearing is critical in high-performance machinery where accuracy and rigidity are paramount. Key applications include:
- Machine Tool Spindles: For milling, grinding, and turning centers.
- High-Frequency Motors and Spindles
- Precision Gearboxes and Robotic Drives
- Medical Equipment and Aerospace Instrumentation
