S7012 ACD/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7012 ACD/HCP4AQBCA
Basic Information
System of measurement
Metric
Weight
1.38 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
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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S7012 ACD/HCP4AQBCA Bearing Product Overview & Core Advantages
The S7012 ACD/HCP4AQBCA is a high-precision quadruplex matched bearing set engineered for demanding applications requiring exceptional rigidity and accuracy. This metric angular contact ball bearing configuration features a back-to-back arrangement (QBC) and P4A super-precision tolerance, delivering superior running accuracy and system stability. Its core advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high stiffness, making it ideal for high-speed, high-rigidity spindles. The use of ceramic balls and a phenolic cage further enhances its performance in challenging operational environments.
S7012 ACD/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7012 | Bearing series and size designation | Indicates a 60mm bore, 95mm OD, 72mm width angular contact bearing. |
| ACD | 25° contact angle | Optimized for high axial load capacity and high-speed operation. |
| HC | Hybrid Ceramic | Signifies the use of ceramic balls, reducing weight, friction, and heat generation. |
| P4A | Tolerance Class | Denotes super-precision tolerances for exceptional running accuracy and minimal vibration. |
| QBC | Quadruplex Back-to-Back | Specifies a set of 4 bearings matched and preloaded in a back-to-back configuration for maximum system rigidity. |
| A | Preload: Extra Light | Ensures minimal friction and optimal performance for high-speed applications. |
S7012 ACD/HCP4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity & Load Capacity: The quadruplex back-to-back (QBC) arrangement creates an extremely stiff bearing system, capable of withstanding heavy combined radial and axial loads and resisting moment loads effectively. This configuration is critical for maintaining precision under heavy cutting forces or other operational stresses.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage, hybrid ceramic balls (Silicon Nitride), and an extra light preload (Class A) enables a high limiting speed of 32,500 rpm. Ceramic balls reduce centrifugal force, lower operating temperature, and extend bearing life.
- High Precision & Accuracy: Manufactured to P4A tolerance class, this bearing set guarantees ultra-precise rotational accuracy and minimal runout, which is essential for applications demanding the highest levels of finish and dimensional control.
- Sealed & Pre-Lubricated Design: The sealed construction protects the bearing from contamination. Being pre-lubricated with grease, it offers a maintenance-free solution within its specified temperature range of -30°C to 110°C.
S7012 ACD/HCP4AQBCA Bearing Typical Application Areas
This precision matched bearing set is specifically designed for high-performance machinery where speed, accuracy, and rigidity are paramount. Key applications include:
- High-Speed Machine Tool Spindles: CNC milling centers, grinding spindles, and precision lathes.
- High-Frequency Motors and Spindles
- Precision Robotic Drives
- Aerospace & Defense Instrumentation
- Medical Device Manufacturing Equipment
