S71913 ACB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71913 ACB/P4A
Basic Information
System of measurement
Metric
Weight
0.22 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
90 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
32
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2239 lbf
Radial static load rating
1980 lbf
Limiting speed
18 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:
$ 769.78
/ each
In Stock
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S71913 ACB/P4A Bearing Product Overview & Core Advantages
The S71913 ACB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. As a single-row bearing with a 25° contact angle and P4 (ABEC-7) tolerance class, it delivers superior performance in high-speed and high-rigidity scenarios. Its key advantage lies in its ability to accommodate combined radial and axial loads simultaneously, making it an ideal choice for compact, high-performance systems. The bearing comes preloaded and lubricated from the factory, ensuring immediate operational readiness and consistent performance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71913 | Denotes the bearing series and size. "S" typically indicates a high-precision series. |
| ACB | Angular Contact Bearing design with a specific contact angle and internal design. |
| P4A | Specifies the P4 (ABEC-7) tolerance class, denoting very high running accuracy. The "A" may indicate a specific preload level or internal clearance. |
S71913 ACB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: Manufactured to a P4 tolerance class, this bearing ensures minimal runout and vibration, which is critical for high-precision applications. The 25° contact angle optimizes the bearing for sustaining significant axial loads.
- Superior Load Capacity: With a dynamic load rating of 2239 lbf and a static load rating of 1980 lbf, it reliably handles demanding combined radial and axial loads.
- Optimized High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 18,000 rpm. This makes it suitable for high-speed spindles and rotors.
- Sealed & Lubricated for Longevity: The sealed design protects against contamination, while the factory-applied lubrication ensures optimal performance within a wide operating temperature range of -30°C to 110°C.
S71913 ACB/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is engineered for high-performance machinery, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Equipment
- High-Speed Pumps and Compressors
