S71917 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71917 CB/HCP4A Bearing Product Overview & Core Advantages
The S71917 CB/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, it delivers superior running precision. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling radial and axial forces. The use of ceramic balls and a phenolic cage contributes to high-speed capability, reduced weight, and extended service life, making it an ideal choice for high-reliability, high-performance systems.
Model Code Breakdown
- S: Denotes a specific bearing series.
- 7: Indicates an angular contact bearing design.
- 1917: Specifies the size series; 17 for the bore code (85mm).
- CB: Specifies a specific contact angle (15°) and internal clearance/ preload configuration.
- HC: Indicates the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4A: Denotes a P4 tolerance class with specific accuracy requirements for the outer ring.
S71917 CB/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: Manufactured to P4 super-precision standards, this bearing ensures minimal runout and vibration, which is critical for applications like machine tool spindles.
Enhanced High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a high limiting speed of 18,000 rpm. The 15-degree contact angle is optimized for high-speed operation with significant axial loads.
Superior Load Capacity: The single-row, angular contact design is engineered to handle substantial combined radial and axial loads efficiently.
Reduced Maintenance & Long Life: The bearing comes sealed and pre-lubricated, protecting against contamination and providing long-term, maintenance-free operation within its specified temperature range.
S71917 CB/HCP4A Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Motors and Spindles
- Precision Grinding Equipment
- Aerospace and Defense Systems
- Medical and Dental Equipment
