71900 CEGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71900 CEGB/P4A Bearing Product Overview & Core Advantages
The 71900 CEGB/P4A is a single-row angular contact ball bearing designed for applications demanding high precision and superior running accuracy. Manufactured to the stringent P4A tolerance class, it offers exceptional dimensional stability and rotational precision. Its key advantage lies in its ability to accommodate combined loads (radial and axial) efficiently, thanks to its 15° contact angle. This bearing is universally matchable (SU), allowing for precise preloading when mounted in pairs, which is critical for achieving high system rigidity and optimal performance in high-speed applications.
71900 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 71900 CEGB/P4A provides specific technical information:
- 71900: Denotes the bearing series and size (10mm bore, 22mm OD).
- C: Signifies a 15° contact angle.
- E: Indicates an optimized internal design, often for high-speed performance.
- GB: Specifies a Light preload / Class B.
- P4A: The tolerance class, indicating very high precision with tighter dimensional and running accuracy tolerances than standard ABEC 7.
71900 CEGB/P4A Bearing Structural Features & Performance Benefits
The performance of the 71900 CEGB/P4A is a direct result of its sophisticated design and material selection:
- High Precision & Rigidity: The P4A tolerance class ensures minimal runout and vibration, which is essential for applications like machine tool spindles. The universal matchability allows for precise axial preload when used in pairs, significantly increasing system rigidity.
- Optimized for High Speeds: The phenolic resin cage is lightweight and exhibits excellent performance at high rotational speeds, contributing to the bearing's high limiting speed of 185,000 rpm. The optimized internal geometry (denoted by suffix 'E') further enhances high-speed capability.
- Superior Load Capacity: The 15° contact angle provides an excellent balance, enabling the bearing to handle significant axial loads in one direction while also supporting substantial radial loads.
- Premium Materials: Constructed from chrome steel for both rings and balls, the bearing offers high hardness, wear resistance, and a long operational life.
71900 CEGB/P4A Bearing Typical Application Areas
The 71900 CEGB/P4A is ideally suited for high-precision, high-speed machinery across various industries, including:
- Machine Tool Spindles: For grinding, milling, and drilling applications where precision and speed are paramount.
- High-Speed Motors and Spindles: Used in PCB drilling, dental handpieces, and small precision electric motors.
- Precision Instruments: Critical components in optical scanners, measuring devices, and laboratory equipment.
- Aerospace and Defense Systems: Gyroscopes, navigation systems, and other critical control mechanisms.
