S71915 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71915 CB/P4A
Basic Information
System of measurement
Metric
Weight
0.38 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
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
34
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3150 lbf
Radial static load rating
2970 lbf
Limiting speed
17 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:
$ 965.06
/ each
In Stock
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S71915 CB/P4A Bearing Product Overview & Core Advantages
The S71915 CB/P4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing with a 15° contact angle, it is optimized to handle combined loads—significant radial loads alongside axial loads in one direction. Its P4 (ABEC-7) tolerance class ensures ultra-precise running accuracy, making it an ideal solution for high-speed spindles and other high-performance machinery. The bearing comes pre-lubricated and sealed, offering a compact, ready-to-install package for high-reliability applications.
S71915 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| CB | Specifies a specific internal clearance and preload level, optimized for the bearing's operational conditions. |
| P4A | Denotes a tolerance class of P4 (equivalent to ABEC-7), indicating very high precision for dimensional and running accuracy. |
S71915 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance with a phenolic resin cage, this bearing provides exceptional dimensional stability and smooth operation, which is critical for minimizing vibration and maintaining precision at high speeds.
- Optimized Load Capacity: The 15° contact angle is designed to efficiently support combined loads, offering robust performance where radial and one-direction axial loads are present.
- High-Speed Performance: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 17,000 rpm, making it suitable for demanding high-speed applications.
- Sealed and Lubricated for Life: As a sealed and pre-lubricated unit, the bearing is protected from contamination and is designed for long-term, maintenance-free operation within its specified temperature range.
S71915 CB/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Aerospace Instrumentation
