S7012 ACE/HCP4ATBTA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7012 ACE/HCP4ATBTA
Basic Information
System of measurement
Metric
Weight
1.2 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
54 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
25
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7898 lbf
Radial static load rating
8212 lbf
Limiting speed
31 X 1000 rpm
Lubrication
Grease
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
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 ACE/HCP4ATBTA Bearing Product Overview & Core Advantages
The S7012 ACE/HCP4ATBTA is a metric, super-precision angular contact ball bearing configured in a triplex back-to-back (TBT) matched set. Engineered for the most demanding applications, it delivers exceptional rotational accuracy, high system rigidity, and superior high-speed performance. Its core advantages stem from the combination of a P4A tolerance class, ceramic balls, and a phenolic cage, making it an ideal solution for machine tool spindles and other high-precision machinery requiring maximum stiffness and minimal thermal growth.
S7012 ACE/HCP4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S7012 | Standard designation for a 60mm bore, 95mm OD angular contact ball bearing. |
| ACE | Indicates a 25° contact angle and an Extra Light (A) preload. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Denotes an ABEC 7 / ISO P4 super-precision tolerance class with enhanced running accuracy requirements. |
| TBT | Specifies the bearing is supplied as part of a Triplex Back-to-Back matched set of 3 bearings. |
| A | The final "A" confirms the Extra Light preload classification within the matched set. |
S7012 ACE/HCP4ATBTA Bearing Structural Features & Performance Benefits
- Maximum System Rigidity & Load Capacity: The triplex back-to-back (TBT) arrangement of three bearings creates an exceptionally stiff bearing system capable of supporting heavy combined loads (radial and axial) from both directions. This configuration is optimal for applications where shaft displacement must be minimized.
- Superior High-Speed Performance: The combination of hybrid ceramic balls (lighter than steel, reducing centrifugal forces) and a lightweight phenolic cage allows for a very high limiting speed of 31,000 rpm. This design minimizes friction and heat generation.
- Enhanced Precision & Long Life: The P4A tolerance class ensures ultra-precise running accuracy for applications requiring minimal vibration and runout. The sealed design with pre-applied grease protects the bearing from contamination during handling and initial operation.
- Thermal Stability: Ceramic balls have a lower coefficient of thermal expansion than steel and are electrically insulating, which helps to maintain consistent preload and performance under varying thermal conditions.
S7012 ACE/HCP4ATBTA Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors and Turbochargers.
- Other advanced machinery requiring super-precision angular contact ball bearings in a pre-matched, high-stiffness configuration.
