S7015 CD/HCP4ADBC
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7015 CD/HCP4ADBC Bearing Product Overview & Core Advantages
The S7015 CD/HCP4ADBC is a precision duplex pair of angular contact ball bearings, pre-matched in a Back-to-Back (DB) arrangement. This configuration is engineered to provide exceptional rigidity and stability, making it ideally suited for applications requiring high rotational accuracy and the ability to withstand combined loads (radial and axial loads from both directions). The use of ceramic balls and a phenolic cage contributes to superior high-speed performance and reduced operational weight. This sealed and pre-lubricated unit offers a reliable, long-service-life solution for demanding machinery.
Model Code Breakdown
- S7015: Basic designation for a 75mm bore, 115mm OD angular contact ball bearing.
- C: 15° contact angle.
- D: Indicates the bearing is part of a duplex pair.
- HC: Hybrid Ceramic construction (steel rings with ceramic balls).
- P4A: High-Precision Tolerance Class (superior to ABEC 7).
- DB: Duplex Back-to-Back mounting arrangement.
- Key Component Materials:
- Ball Material: Ceramic (Silicon Nitride) - Offers lower density, higher stiffness, and superior performance at high speeds.
- Cage Material: Phenolic - Provides excellent strength-to-weight ratio and smooth operation at high RPMs.
S7015 CD/HCP4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, stable support system that significantly increases moment rigidity. This design enables the bearing set to effectively handle combined radial and bidirectional axial loads.
High-Speed Performance: The combination of low-density ceramic balls reduces centrifugal forces, while the lightweight, robust phenolic cage ensures stable guidance at the limiting speed of 28,000 rpm. This makes it an ideal high-speed bearing solution.
Precision & Longevity: Manufactured to a P4A tolerance class, this bearing guarantees exceptional running accuracy. It comes sealed and pre-lubricated with grease, offering protection from contamination and providing maintenance-free operation within its specified temperature range.
S7015 CD/HCP4ADBC Bearing Typical Application Areas
This high-precision, high-speed bearing set is typically specified for critical applications in:
- Machine Tool Spindles (e.g., milling, grinding, and high-speed machining centers)
- High-Frequency Motors and Spindles
- Precision Robotics
- Aerospace & Defense Systems
- Medical & Dental Equipment (e.g., high-speed handpieces)
