S71912 ACB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71912 ACB/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
5.556 mm
Ball quantity
30
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2194 lbf
Radial static load rating
1868 lbf
Limiting speed
19 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:
$ 655.11
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71912 ACB/P4A Bearing Product Overview & Core Advantages
The S71912 ACB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered as a single bearing with preload capability, it delivers superior rotational precision and system rigidity. Its 25° contact angle is optimized to handle significant combined loads—simultaneous radial and axial forces—making it an ideal solution for high-speed spindles and precision machinery where high rigidity and minimal runout are critical.
S71912 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71912 | Basic bearing designation, indicating a metric series, 60mm bore, 85mm OD, 13mm width angular contact ball bearing. |
| ACB | A specific internal design and contact angle (25°) for optimal performance. |
| P4 | Indicates a P4 tolerance class (ABEC-7), signifying extremely high precision bearing standards for minimal dimensional and running accuracy deviations. |
| A | Denotes that the bearing is supplied with a specific, light preload for immediate high-stiffness performance. |
S71912 ACB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The angular contact design with a 25° contact angle and factory-applied preload ensures maximum system stiffness and precise shaft positioning, critical for applications with minimal deflection requirements.
- Superior Load Capacity: Engineered to handle combined loads effectively, with a dynamic load rating of 2194 lbf and a static load rating of 1868 lbf.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 19,000 rpm. This makes it an excellent high-speed bearing.
- Sealed & Lubricated for Longevity: As a sealed bearing type, it is protected from contamination and comes pre-lubricated, offering a maintenance-free solution within its specified temperature range of -30°C to 110°C.
- Premium Materials: Constructed from chrome steel for rings and balls, ensuring high durability and wear resistance.
S71912 ACB/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Robotics (Articulated arms, rotary joints)
- Medical Equipment (Dental handpieces, imaging scanners)
- Aerospace Instrumentation (Gyroscopes, navigation systems)
- High-Frequency Motors and Spindles
