S71913 CEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71913 CEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.2 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3712 lbf
Radial static load rating
2745 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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S71913 CEGA/P4A Bearing Product Overview & Core Advantages
The S71913 CEGA/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered with an extra light preload (Class A) and manufactured to P4A tolerance class, this bearing delivers superior running accuracy and rotational stability. Its compact design, with a 65 mm bore and 13 mm width, enables integration into space-constrained, high-performance systems. The bearing is universally matchable (SU), allowing for precise axial rigidity control when mounted in pairs. It is pre-lubricated with grease and sealed for long-term, maintenance-free operation.
S71913 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71913 | Denotes a high-precision angular contact ball bearing series with a 65mm bore, 90mm OD, and 13mm width. |
| CE | Indicates a 15° contact angle, optimized for handling combined loads with high axial rigidity. |
| GA | Specifies an extra light preload (Class A), minimizing friction and heat generation for high-speed operation. |
| P4A | Signifies a super-precision tolerance class exceeding ABEC 7 standards, ensuring exceptional dimensional and running accuracy. |
S71913 CEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 15° contact angle enables the bearing to support significant combined radial and axial loads simultaneously. The universal matching (SU) feature allows for precise preload setting in pairs, creating a system with exceptionally high rigidity.
- Super-Precision Performance: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures minimal runout, smooth operation, and low vibration levels, which is critical for high-precision applications.
- Optimized for High Speeds: The combination of the lightweight phenolic cage, extra light preload, and high-quality steel components allows for a high limiting speed of 36,000 rpm, making it a true high-speed bearing.
- Sealed & Lubricated for Life: The integrated seals protect against contamination, and the factory-applied grease lubrication operates effectively within a temperature range of -30°C to 110°C, providing long service life with minimal maintenance.
S71913 CEGA/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for applications where high rotational accuracy, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: Dental handpieces, centrifuges, and imaging scanners.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and flight control actuators.
- High-Frequency Motors and Spindles.
