S7012 ACB/P4ADT
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7012 ACB/P4ADT
Basic Information
System of measurement
Metric
Weight
0.9 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
36 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.747 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4972 lbf
Radial static load rating
5130 lbf
Limiting speed
32.5 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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 ACB/P4ADT Bearing Product Overview & Core Advantages
The S7012 ACB/P4ADT is a precision angular contact ball bearing configured as a duplex tandem (DT) matched set. Engineered to the exacting P4A tolerance class, this bearing is designed for applications demanding exceptional rotational accuracy and rigidity. Its primary advantage lies in its ability to handle combined loads—significant radial and unidirectional axial loads—simultaneously, making it an ideal solution for high-precision, high-speed spindles and machinery where uncompromising performance is critical.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| ACB | A standard contact angle of 25°, optimized for high rigidity and axial load capacity. |
| P4A | Indicates a high-precision tolerance class with enhanced running accuracy requirements. |
| DT | Signifies a Duplex Tandem arrangement. Two bearings are mounted together to increase axial load capacity in one direction. |
S7012 ACB/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The duplex tandem arrangement and 25° contact angle create an exceptionally rigid bearing system capable of supporting high radial loads and substantial unidirectional axial loads, minimizing shaft deflection under operation.
- Precision & High-Speed Performance: Manufactured to P4A tolerance standards and featuring a lightweight phenolic resin cage, this bearing ensures smooth, stable operation and is capable of achieving a high limiting speed of 32,500 rpm, making it suitable for high-speed applications.
- Durability and Reliability: Constructed from high-grade chrome steel for both rings and balls, the bearing offers excellent wear resistance and long service life. The sealed design and factory-applied grease lubrication protect against contamination and provide reliable operation within a specified temperature range.
- Preload & Matched Set: Supplied as a pre-loaded matched set, these bearings are ready for installation, ensuring optimal stiffness and rotational accuracy without the need for complex on-site adjustment.
S7012 ACB/P4ADT Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for applications requiring high RPM and accuracy.
- Other Precision Equipment: Where high rigidity, speed, and load capacity are paramount.
