S71912 ACE/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71912 ACE/P4A
Basic Information
System of measurement
Metric
Weight
0.19 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
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3442 lbf
Radial static load rating
2475 lbf
Limiting speed
19.5 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:
$ 655.04
/ each
In Stock
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S71912 ACE/P4A Bearing Product Overview & Core Advantages
The S71912 ACE/P4A is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. As a single-row bearing with a 25° contact angle, it is optimized to support combined loads—handling significant radial forces alongside thrust loads in one direction. Its P4 (ABEC-7) tolerance class ensures ultra-precise running, making it ideal for high-speed spindles and other demanding machinery where high rigidity and minimal runout are critical. The bearing is pre-lubricated and sealed for immediate use and long-term reliability.
S71912 ACE/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 60mm bore, 85mm OD, and 13mm width. |
| ACE | Internal design code specifying a 25° contact angle and optimized internal geometry for high-speed operation. |
| P4A | Indicates a P4 (ABEC-7) tolerance class with specific dimensional and running accuracy requirements for precision applications. |
S71912 ACE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust internal construction, featuring 23 precision balls, provide high resistance to deformation under combined radial and axial loads. This ensures stable performance in applications with demanding load conditions.
- High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces and reduces friction, contributing to the high limiting speed of 19,500 rpm. This makes it suitable for high-speed spindles and other rapid-rotation equipment.
- Precision Performance: Manufactured to P4 (ABEC-7) tolerance standards, this bearing guarantees extremely tight dimensional control and superior running accuracy, which is essential for minimizing vibration and ensuring precise positioning.
- Sealed & Lubricated Design: The integrated seals protect against contamination, while the factory-applied lubrication ensures immediate operation and consistent performance across the specified temperature range of -30°C to 110°C.
S71912 ACE/P4A Bearing Typical Application Areas
This precision bearing is engineered for high-demand sectors, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Instrumentation: Used in measuring devices, optical scanners, and other equipment where minimal runout is critical.
- High-Speed Motors and Pumps: Ideal for applications demanding smooth operation at elevated rotational speeds.
- Robotics and Automation: Provides reliable, high-precision motion control in articulated arms and positioning systems.
