S7012 ACD/P4AQBCD
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7012 ACD/P4AQBCD
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
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
22725 lbf
Radial static load rating
29700 lbf
Limiting speed
32.5 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
Heavy / Class D
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 ACD/P4AQBCD Bearing Product Overview & Core Advantages
The S7012 ACD/P4AQBCD is a precision quadruplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This metric system bearing features a back-to-back matched arrangement of four bearings, enabling it to withstand combined radial and axial loads simultaneously. Manufactured to P4A tolerance class and preloaded to Heavy / Class D, it delivers superior rotational accuracy, high stiffness, and reliable performance in demanding, high-precision environments. Its compact design integrates multiple bearing functions into a single, highly engineered unit.
S7012 ACD/P4AQBCD Bearing Model Code Explained, Specifications & Naming Convention
The model number S7012 ACD/P4AQBCD provides detailed technical specifications:
- S7012: Base bearing series and size designation (60mm bore, 95mm OD).
- A: Denotes a 25° contact angle, optimized for high axial load capacity.
- C: Indicates the bearing is manufactured to a high-grade tolerance.
- D: Specifies a Heavy / Class D preload for maximum system rigidity.
- P4A: The tolerance class, signifying very high precision for spindle applications.
- QBC: Denotes the bearing is part of a Quadruplex Back-to-Back matched set.
- D: Confirms the set is supplied as a pre-matched quadruplex unit.
S7012 ACD/P4AQBCD Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Stability: The quadruplex back-to-back arrangement creates an extremely rigid bearing system, effectively resisting complex moment loads and minimizing shaft deflection under heavy operating conditions.
- High Load Capacity: With a 25° contact angle and a dynamic load rating of 22,725 lbf, this bearing is engineered to handle significant combined radial and axial loads.
- Precision Performance: The P4A tolerance class ensures minimal runout and vibration, which is critical for maintaining high positional accuracy in precision machinery.
- Optimized for High-Speed Operation: The phenolic cage and precision-ground chrome steel components contribute to smooth operation and a high limiting speed of 32,500 rpm.
- Sealed and Lubricated for Life: As a sealed unit with factory-applied grease lubrication, it is protected from contamination and is ready for immediate installation, offering long-term, maintenance-free service.
S7012 ACD/P4AQBCD Bearing Typical Application Areas
This high-precision, high-rigidity bearing is ideally suited for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and High-Frequency Motor Spindles.
- Industrial Pumps and Compressors requiring high axial stiffness.
- Robotic Drives and Automated Positioning Systems.
