S71924 CEGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71924 CEGB/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
Light / Class B
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 CEGB/P4A Bearing Product Overview & Core Advantages
The S71924 CEGB/P4A is a super-precision angular contact ball bearing designed for the most demanding applications. Engineered to the exacting P4A tolerance class, it delivers exceptional rotational accuracy and operational stability. This bearing is distinguished by its ability to support combined loads (simultaneous radial and axial loads) with high reliability. Its 15° contact angle and light preload (Class B) make it an ideal choice for high-speed spindles requiring superior running accuracy and minimal deflection. The phenolic resin cage and factory-applied grease lubrication contribute to its high-speed capability and long service life.
S71924 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number S71924 CEGB/P4A provides detailed technical specifications:
- S7: Indicates a series of high-precision, super-precision bearings.
- 19: Denotes the bore diameter code (120 mm).
- 24: Specifies the outside diameter and width series.
- C: Signifies a 15° contact angle.
- E: Represents an optimized internal design for high-speed operation.
- GB: Indicates a light preload (Class B).
- P4A: The tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional dimensional and running accuracy.
S71924 CEGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design, manufactured to P4A tolerances, provides exceptional dimensional stability and stiffness, minimizing deflection under load for superior machining accuracy.
- Superior Load Capacity: The 15° contact angle is optimized to handle significant combined loads, making it suitable for applications with substantial radial and axial force components.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and grease lubrication enable a high limiting speed of 11,000 rpm.
- Universal Matching Capability (SU): This bearing is universally matchable, allowing for flexible arrangement in sets (up to 4 bearings) to achieve specific preload and stiffness requirements without selective mounting.
- Durability: Constructed from high-grade chrome steel for rings and balls, ensuring high fatigue life and resistance to wear in demanding operational environments.
S71924 CEGB/P4A Bearing Typical Application Areas
The S71924 CEGB/P4A is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Motors
- Precision Instrumentation
- Aerospace Components
- Medical Equipment Spindles
