S71912 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71912 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.2 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.008mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4185 lbf
Radial static load rating
3285 lbf
Limiting speed
14 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 655.14
/ each
In Stock
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S71912 ACD/P4A Bearing Product Overview & Core Advantages
The S71912 ACD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Positioned in the P4 (ABEC-7) tolerance class, it is designed to accommodate combined loads (radial and axial) simultaneously, with its 25° contact angle providing excellent axial load capacity. The bearing comes preloaded and lubricated from the factory, ensuring immediate operational readiness, high running accuracy, and optimal performance in demanding, high-speed environments.
S71912 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71912 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 60 mm bore, 85 mm OD, and 13 mm width. |
| ACD | Signifies a 25° contact angle and a preloaded design. This optimizes the bearing for high rigidity and precise shaft positioning. |
| P4A | Denotes a P4 tolerance class (equivalent to ABEC-7), ensuring extremely tight dimensional and running accuracy for precision machinery. |
S71912 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a phenolic cage and P4 tolerance class provides superior running accuracy and stiffness, minimizing deflection under load for stable operation.
- Optimized Load Capacity: The 25° contact angle is engineered to efficiently handle significant combined radial and axial loads, making it suitable for applications with complex loading conditions.
- High-Speed Capability: The lightweight phenolic resin cage and optimized internal geometry contribute to a high limiting speed of 14,000 rpm, reducing centrifugal forces and friction.
- Ready-to-Install Performance: The bearing is supplied preloaded and lubricated, eliminating the need for initial setup and ensuring consistent, high-performance operation from the start.
S71912 ACD/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance equipment, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Equipment
- Robotic Drives and Servo Motors
