S71924 CEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71924 CEGA/P4A
Basic Information
System of measurement
Metric
Weight
1.14 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
165 mm
Outside diameter tolerance
-0.004mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
10688 lbf
Radial static load rating
9000 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
4
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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S71924 CEGA/P4A Bearing Product Overview & Core Advantages
The S71924 CEGA/P4A is a super-precision double row angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. Its design enables it to handle combined loads—significant radial loads alongside bidirectional axial loads—simultaneously. Manufactured to the stringent P4A tolerance class, this bearing offers superior running accuracy and dimensional stability. The combination of a phenolic cage and high-quality grease lubrication facilitates high-speed operation up to 11,000 rpm, making it an ideal, compact solution for high-performance spindles and precision machinery where reliability is paramount.
S71924 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
The S71924 CEGA/P4A model designation provides detailed technical specifications:
- S7: Indicates a series of high-precision angular contact ball bearings.
- 1924: Specifies the size series, with a 120 mm bore, 165 mm outside diameter, and 22 mm width.
- CE: Denotes a 15° contact angle and that the bearing is Universal Matchable (SU), allowing for precise preload setting when mounted in pairs or sets.
- GA: Signifies an Extra light (Class A) preload applied to the bearing, optimizing it for high rigidity and minimal deflection under load.
- P4A: The tolerance class, specifying super-precision dimensions and running accuracy superior to ABEC 7 / ISO P4.
S71924 CEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The double row design provides a significantly stiffer support structure compared to single row bearings, enabling superior performance under combined radial and axial loads.
- Super-Precision Performance: Manufactured to P4A tolerances with a bore and outside diameter tolerance of -0.004mm to 0, ensuring exceptional running accuracy and system stability.
- Optimized High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the 15° contact angle and optimized internal geometry contribute to a high limiting speed of 11,000 rpm.
- Sealed and Lubricated for Life: The bearing is sealed and pre-lubricated with high-performance grease, offering protection from contamination and providing maintenance-free operation within its specified temperature range of -30°C to 110°C.
S71924 CEGA/P4A Bearing Typical Application Areas
This bearing is specifically designed for high-end applications requiring maximum precision and speed, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for CNC machinery.
- Other Precision Equipment: Rotary tables, measuring instruments, and medical devices.
