7012 CD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7012 CD/P4ADBC
Basic Information
System of measurement
Metric
Weight
0.81 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
95 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
14918 lbf
Radial static load rating
15638 lbf
Limiting speed
34 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
Moderate / Class C
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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7012 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7012 CD/P4ADBC is a precision duplex pair of angular contact ball bearings designed for applications demanding exceptional rotational accuracy and rigidity. This metric bearing set, pre-configured in a Back-to-Back (DB) arrangement with a Moderate (Class C) preload, is engineered to handle combined loads—simultaneously supporting substantial radial loads and axial loads in both directions. Its P4A tolerance class ensures ultra-precision operation, making it ideal for high-speed, high-reliability spindles and machinery where minimal runout and thermal stability are critical.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates the bearings are supplied as a Duplex pair. |
| P4A | Denotes an ultra-precision tolerance class with specific running accuracy requirements, superior to ABEC-7. |
| DB | Signifies the Back-to-Back mounting arrangement, which provides high moment rigidity and excellent operational stability. |
7012 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring precise shaft positioning under heavy combined loads.
- Superior Precision: Manufactured to P4A tolerance class with tight dimensional controls on bore, outside diameter, and width, this bearing set guarantees minimal vibration and exceptional running accuracy for demanding applications.
- Optimized High-Speed Performance: The phenolic resin cage is lightweight and possesses excellent slip characteristics, contributing to lower friction, reduced heat generation, and a high limiting speed of 34,000 rpm.
- Robust Load Capacity: With a 15° contact angle and high-quality chrome steel construction, this bearing delivers a high dynamic and static load rating, reliably handling significant radial and bidirectional axial forces.
- Ready-to-Install Precision Set: The matched pair is pre-loaded at the factory, simplifying installation and ensuring immediate, optimal performance without the need for complex on-site adjustment.
7012 CD/P4ADBC Bearing Typical Application Areas
This precision bearing set is ideally suited for high-performance machinery where accuracy, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motors and spindles.
- Industrial Pumps & Compressors: For applications requiring high shaft stability.
- Robotics & Automation: Precision joints and rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and other critical instrumentation.
