S7012 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7012 CDGA/HCP4A Bearing Product Overview & Core Advantages
The S7012 CDGA/HCP4A is a high-precision, single-row angular contact ball bearing engineered for demanding applications. Its core advantages stem from its ceramic ball construction and P4A super-precision tolerance class, enabling exceptional high-speed performance with a limiting speed of 31,000 rpm. The bearing is preloaded (Extra light / Class A) and sealed, offering high system rigidity, operational stability, and long-term reliability in clean environments. It is part of a universally matchable set, allowing for flexible arrangement in duplex pairs to support combined loads effectively.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7012 | Bearing series and size designation (60mm bore, 95mm OD, 18mm width). |
| C | 15° contact angle. |
| DG | Universal matchable design. Can be mounted in duplex pairs (DB, DF, DT). |
| A | Extra light preload. |
| HC | Hybrid Ceramic: Ceramic balls with steel rings. |
| P4A | Tolerance class superior to ABEC 7 / ISO P4, with enhanced running accuracy. |
S7012 CDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, especially at very high speeds. This construction also provides superior resistance to electrical erosion.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent guidance and stability at high rotational speeds, contributing to the bearing's high limiting speed.
Precision and Rigidity: Manufactured to P4A super-precision standards with a 15° contact angle and light preload, this bearing delivers exceptional running accuracy, low noise, and high system rigidity for precise positioning applications.
Sealed and Grease-Lubricated: The integral seals protect against contamination and retain the factory-applied grease, providing a maintenance-free solution within the specified temperature range of -30°C to 110°C.
S7012 CDGA/HCP4A Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for applications requiring high speed, high rigidity, and exceptional accuracy, such as:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Spindles for PCB drilling and routing
- High-frequency Motors and Generators
- Medical and Dental Handpiece Drives
- Advanced Aerospace and Semiconductor equipment
