S7012 CD/P4AQBCC
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7012 CD/P4AQBCC
Basic Information
System of measurement
Metric
Weight
1.63 kg
Tolerance class
P4A
Seal type
Sealed
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
72 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
23850 lbf
Radial static load rating
31500 lbf
Limiting speed
31 X 1000 rpm
Lubrication
Grease
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
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
Price available upon request.
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S7012 CD/P4AQBCC Bearing Product Overview & Core Advantages
The S7012 CD/P4AQBCC is a super-precision angular contact ball bearing designed for the most demanding applications. Its Quadruplex Back-to-Back (QBC) matched arrangement provides exceptional system rigidity and stability, enabling it to handle complex combined loads (radial and axial) simultaneously. Manufactured to a P4A tolerance class, this bearing guarantees outstanding running accuracy and is optimized for high-speed operation up to 31,000 rpm. The phenolic cage and pre-lubrication contribute to its reliable performance in a wide temperature range.
S7012 CD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CD | 15° contact angle and optimized internal geometry | Balanced performance for axial and radial loads |
| P4A | High-Precision Tolerance Class (superior to ABEC 7) | Guarantees low vibration and high running accuracy |
| QBCC | Quadruplex Back-to-Back arrangement, Moderate (C) preload | Provides maximum system stiffness and pre-calibrated performance |
S7012 CD/P4AQBCC Bearing Structural Features & Performance Benefits
- Exceptional Rigidity: The Quadruplex Back-to-Back (QBC) matched set of four bearings creates an extremely rigid bearing system, critical for minimizing deflection under heavy combined loads and moment loads.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the 15° contact angle and precision grinding contribute to a high limiting speed of 31,000 rpm.
- Optimized Load Capacity: The bearing's internal design, featuring 19 balls and a bore diameter of 60 mm, provides high dynamic and static load ratings (23,850 lbf / 31,500 lbf) for long service life.
- Pre-Lubricated & Sealed: The bearing comes pre-lubricated with grease and is sealed, protecting against contamination and providing maintenance-free operation within its specified temperature range.
S7012 CD/P4AQBCC Bearing Typical Application Areas
This super-precision bearing is engineered for high-performance machinery where accuracy, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Where extreme rotational accuracy is required.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Aerospace & Defense Systems: Including gyroscopes and other critical navigation or control mechanisms.
