7212 CD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7212 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.81 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.008mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
16
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
12870 lbf
Radial static load rating
10462 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
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:
$ 132.93
/ each
In Stock
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Product Overview and Core Advantages
The 7212 CD/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. This precision bearing features a 15° contact angle and is manufactured to P4 (ABEC-7) tolerance class, making it ideal for applications demanding minimal runout and vibration. Its key advantage lies in its ability to accommodate combined loads (radial and axial loads in one direction) efficiently while operating at high speeds, supported by its phenolic cage and preload availability for enhanced system stiffness.
7212 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7212 | Basic bearing series: 60 mm bore, 110 mm OD, 22 mm width |
| CD | Contact angle design (15°) and internal optimized geometry |
| P4A | Tolerance class: P4 (ABEC-7) with specific dimensional and running accuracy requirements |
Structural Features and Performance Benefits
- High Rigidity and Precision: The single-row angular contact design with a 15° contact angle provides optimal stiffness for precise shaft positioning. Manufactured to P4 tolerance class, it ensures minimal dimensional variation and superior running accuracy.
- Enhanced Load Capacity: Engineered to support significant combined radial and axial loads in one direction, with a dynamic load rating of 12,870 lbf and static load rating of 10,462 lbf.
- High-Speed Performance: The phenolic resin cage reduces centrifugal forces and friction, enabling a limiting speed of 20,000 rpm. The open design facilitates efficient lubrication management for thermal stability.
- Optimized Material Selection: Components made from chrome steel (rings and balls) provide high wear resistance and durability, suitable for a temperature range of -30°C to 110°C.
7212 CD/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring minimal deflection.
- High-Speed Motors and Spindles: Electric motors, CNC spindles, and turbochargers where speed and accuracy are critical.
- Precision Instrumentation: Measuring devices, optical scanners, and laboratory equipment.
- Pumps and Compressors: Applications demanding reliable performance under combined loads and moderate temperatures.
