7212 CD/P4ADBD
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7212 CD/P4ADBD
Basic Information
System of measurement
Metric
Weight
1.62 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
44 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°C to 110 °C
Radial dynamic load rating
21060 lbf
Radial static load rating
20925 lbf
Limiting speed
36 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
Heavy / Class D
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7212 CD/P4ADBD Bearing Product Overview & Core Advantages
The 7212 CD/P4ADBD is a precision angular contact ball bearing configured as a duplex back-to-back (DB) matched pair with a heavy preload (Class D). This engineered assembly is specifically designed to deliver exceptional system rigidity and rotational accuracy, making it ideal for applications demanding high precision and stability under significant combined loads (radial and axial). The P4A tolerance class ensures superior running accuracy, while the phenolic cage contributes to smooth, high-speed operation.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7212 | Basic bearing series and size designation (60mm bore, 110mm OD). |
| C | Specifies a 15° contact angle, optimized for carrying high axial loads. |
| D | Indicates the heavy preload (Class D) for maximum system stiffness. |
| P4A | Denotes a high precision tolerance class exceeding ABEC 7/ISO P4 standards. |
| DB | Signifies the bearings are supplied as a Duplex Back-to-Back matched set. |
7212 CD/P4ADBD Bearing Structural Features & Performance Benefits
- Superior Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and can handle heavy combined radial and axial loads from both directions.
- High Precision Operation: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, ensuring minimal runout and vibration for precise applications.
- Optimized High-Speed Performance: The lightweight phenolic resin cage offers excellent strength-to-weight ratio, reducing centrifugal forces and allowing for a high limiting speed of 36,000 rpm. The 15° contact angle provides a balanced capability for both high-speed and axial load requirements.
- Pre-Configured for Performance: The set is supplied pre-lubricatedheavy preload, eliminating the need for complex on-site adjustment and ensuring immediate, optimal performance upon installation.
7212 CD/P4ADBD Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision, speed, and rigidity are critical. Key applications include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Gearboxes: Especially in high-torque, high-speed transmission systems.
- Industrial Pumps & Compressors: Where reliable operation under significant axial and radial forces is required.
- Robotic Drives and Rotary Axes: Providing the accuracy and stiffness needed for precise positioning.
