7210 CDGA/VQ253
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7210 CDGA/VQ253
Basic Information
System of measurement
Metric
Weight
0.46 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
20 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
10102 lbf
Radial static load rating
7650 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7210 CDGA/VQ253 Bearing Product Overview & Core Advantages
The 7210 CDGA/P4A is a single row angular contact ball bearing designed for ultra-high precision applications. Positioned in the P4A tolerance class, it delivers exceptional running accuracy and rotational stability. A key feature is its Universal Matchable (SU) designation, allowing multiple bearings to be precisely matched in sets for optimal preload and performance. Its 15° contact angle is engineered to efficiently handle combined loads, with a primary capacity for high axial loads in one direction. The phenolic resin cage contributes to its high-speed capabilities, making it an ideal choice for machine tool spindles and other demanding, high-rotational-speed environments.
7210 CDGA/VQ253 Bearing Model Code Explained, Specifications & Naming Convention
The model number 7210 CDGA/P4A is decoded as follows:
- 7210: Basic series designation (70mm Bore, 90mm OD, 20mm Width).
- C: Signifies a 15° contact angle.
- DG: Indicates the bearing is Universal Matchable. Two bearings can be mounted in a face-to-face (DF) or back-to-back (DB) arrangement with a pre-determined axial clearance.
- A: Denotes an Extra Light preload (Class A).
- P4A: Specifies a very high tolerance class with even tighter tolerances than ABEC 7 (P4), ensuring superior running accuracy.
7210 CDGA/VQ253 Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on the bore, outside diameter, and width. This guarantees minimal runout and superior system rigidity for critical applications.
- Optimized Load Capacity: The 15° contact angle is optimized to support significant axial loads in one direction while also accommodating radial loads, making it perfect for applications with combined loading.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, lowers friction, and allows for a high limiting speed of 41,000 rpm. This cage material is also resilient under high rotational stresses.
- Universal Matching Capability: The Universal Matchable (SU) feature allows for simplified assembly of precision bearing sets. This ensures consistent, predictable performance and simplifies achieving the correct preload in matched arrangements.
7210 CDGA/VQ253 Bearing Typical Application Areas
This high-precision bearing is engineered for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines and other high-speed automated equipment.
- High-Frequency Motors: Spindles for routers and other motorized tools requiring high rotational accuracy.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace Instrumentation: Gyroscopes and other navigation systems.
