S71917 CEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71917 CEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.52 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6660 lbf
Radial static load rating
5130 lbf
Limiting speed
17 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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S71917 CEGA/P4A Bearing Product Overview & Core Advantages
The S71917 CEGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single bearing with P4A tolerance class, it offers extremely tight dimensional control for superior running performance. Its 15° contact angle is optimized to handle combined loads, efficiently supporting significant radial loads alongside axial loads in one direction. The phenolic cage and pre-filled grease enable high-speed operation, making it an ideal choice for high-precision, high-speed spindles and other critical machinery where reliability and accuracy are paramount.
S71917 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| CEGA | Specific internal design and clearance for universal matching (SU). | Allows for precise axial preload when mounted with a second, identical bearing, enhancing system rigidity. |
| P4A | Tolerance class superior to ABEC 7 (P4), with additional running accuracy requirements. | Ensures extremely low vibration and noise for superior performance in high-precision applications. |
S71917 CEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with a bore and outside diameter tolerance of just -0.004mm to 0, this bearing ensures minimal runout and exceptional dimensional stability for demanding applications.
- Optimized Load Capacity: The 15° contact angle and robust construction, featuring a phenolic cage and 23 high-precision balls, provide a high dynamic load rating of 6660 lbf, enabling reliable performance under combined radial and axial loads.
- Superior High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the pre-applied grease lubrication supports a high limiting speed of 17,000 rpm, making it suitable for high-speed spindle designs.
- Sealed and Pre-Lubricated: As a sealed bearing with factory-applied grease, it is protected from contamination and is ready for immediate use, offering long-term, maintenance-free operation within its specified temperature range.
S71917 CEGA/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motors and spindles.
- Industrial Pumps and Compressors: Applications requiring high-speed and reliable operation.
- Robotics and Automation: Precision joints and rotary axes.
