S71915 ACE/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71915 ACE/P4A
Basic Information
System of measurement
Metric
Weight
0.34 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.008mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4770 lbf
Radial static load rating
3600 lbf
Limiting speed
15.5 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:
$ 964.83
/ each
In Stock
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S71915 ACE/P4A Bearing Product Overview & Core Advantages
The S71915 ACE/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, this bearing is preloaded and sealed, making it an ideal solution for high-speed spindles and precision machinery. Its key advantages include the ability to accommodate combined loads (radial and axial), superior running accuracy, and long-term reliability in compact installations.
S71915 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| ACE | 25° Contact Angle, High Precision | Optimized for high axial load capacity and high-speed performance. |
| P4A | P4 (ABEC-7) Tolerance Class | Guarantees extremely tight dimensional and running accuracy for precision applications. |
S71915 ACE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single-row design with a 25° contact angle and preload provides high system rigidity and excellent capability to handle significant radial and one-direction axial loads simultaneously.
- High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and enabling a high limiting speed of 15,500 rpm. This makes it suitable for high-speed spindle applications.
- Sealed & Lubricated for Life: As a sealed bearing, it is lubricated for life, protecting against contamination and retaining lubricant. This results in a maintenance-free solution with consistent performance over its service life.
- Precision Engineering: Manufactured from high-grade chrome steel and held to a P4 tolerance class, this bearing ensures minimal vibration and high positional accuracy.
S71915 ACE/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Rotary Tables
- High-Frequency Motors
- Medical and Dental Equipment
- Optical and Measuring Instruments
