S71915 ACE/P4ADT
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71915 ACE/P4ADT
Basic Information
System of measurement
Metric
Weight
0.69 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 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°C to 110 °C
Radial dynamic load rating
7762 lbf
Radial static load rating
7200 lbf
Limiting speed
28 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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S71915 ACE/P4ADT Bearing Product Overview & Core Advantages
The S71915 ACE/P4ADT is a precision angular contact ball bearing configured in a duplex tandem (DT) arrangement. This matched pair is designed to handle combined loads, offering exceptional axial rigidity and operational accuracy. Manufactured to P4A tolerance class, it delivers superior running precision, making it ideal for high-speed, high-rigidity applications requiring maximum system performance and reliability.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| S | Designates a super-precision bearing. |
| ACE | Indicates a 25° contact angle and specific internal design optimized for high-speed operation. |
| P4A | Specifies the tolerance class, denoting very high dimensional and running accuracy. |
| DT | Denotes a Duplex Tandem arrangement, where two bearings are mounted together to support heavy axial loads in one direction. |
S71915 ACE/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 25° contact angle create an exceptionally rigid setup capable of supporting significant axial loads. The phenolic cage ensures stability under high-speed rotation.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with a limiting speed of 28,000 rpm, this bearing guarantees smooth, precise, and quiet operation essential for high-speed spindles.
- Optimized for Preload: The bearing is supplied as a pre-matched set, ready for preload application, which eliminates internal clearance and enhances system stiffness and rotational accuracy.
- Durability & Reliability: Constructed from chrome steel for both rings and balls, it offers excellent wear resistance and a long operational life in demanding conditions.
S71915 ACE/P4ADT Bearing Typical Application Areas
The S71915 ACE/P4ADT is engineered for high-performance machinery where precision and speed are critical. Key applications include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Aerospace Control Systems
