7012 CE/P4AQBCA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7012 CE/P4AQBCA
Basic Information
System of measurement
Metric
Weight
1.68 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
72 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
25
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
10102 lbf
Radial static load rating
11475 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
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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7012 CE/P4AQBCA Bearing Product Overview & Core Advantages
The 7012 CE/P4AQBCA is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. As part of a Quadruplex Back-to-Back (QBC) matched set, this bearing is engineered to handle significant combined loads—simultaneous radial and axial forces—with high stability. Its P4A tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and precision machinery where minimal runout and vibration are critical. The extra light preload (Class A) minimizes deflection under load, contributing to superior system performance and longevity.
7012 CE/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7012 CE/P4AQBCA provides detailed technical specifications through its suffixes:
- 7012: Basic bearing series with 60 mm bore, 95 mm OD, and 72 mm width.
- C: Denotes a 15° contact angle, optimized for high-speed applications with moderate axial load capacity.
- E: Indicates optimized internal design for enhanced performance and load rating.
- P4A: Specifies the tolerance class, indicating very high precision with tight dimensional and running accuracy tolerances.
- QBC: Stands for Quadruplex Back-to-Back arrangement, meaning four bearings are matched and preloaded in a back-to-back configuration for maximum system rigidity.
- A: Denotes Extra Light Preload class, reducing friction and heat generation at high speeds.
7012 CE/P4AQBCA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The Quadruplex Back-to-Back (QBC) matched arrangement creates an exceptionally rigid bearing system, capable of resisting complex moment loads and maintaining precise shaft positioning under heavy combined loads.
- Superior Precision: Manufactured to P4A tolerance class, this bearing guarantees minimal dimensional variation and superior running accuracy, which is critical for applications requiring high rotational precision.
- Optimized High-Speed Performance: The 15° contact angle and phenolic cage work in concert to reduce centrifugal forces and friction, enabling a high limiting speed of 34,000 rpm. The extra light preload further minimizes heat buildup.
- Robust Load Capacity: With a dynamic load rating of 10,102 lbf and a static load rating of 11,475 lbf, the bearing is built to withstand significant radial and axial forces encountered in demanding operations.
- Durable Construction: Components made from chrome steel for both rings and balls ensure high durability and resistance to fatigue, while the phenolic cage offers excellent strength-to-weight ratio and smooth operation at high speeds.
7012 CE/P4AQBCA Bearing Typical Application Areas
This high-precision, high-rigidity bearing is specifically designed for advanced industrial applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Articulated arms and high-accuracy positioning systems.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and navigation systems.
- Medical Equipment: High-speed dental handpieces and CNC surgical devices.
- Test & Measurement Equipment: Coordinate measuring machines (CMM) and precision rotary tables.
