S7003 CDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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S7003 CDGB/HCP4A Bearing Product Overview & Core Advantages
The S7003 CDGB/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered as a universally matchable single bearing (SU designation), it enables precise preload control when mounted in pairs. Its core advantages include superior high-speed capability with a limiting speed of 85,000 rpm, enabled by a phenolic cage and ceramic balls, and the ability to handle combined loads efficiently with a 15° contact angle. The sealed design with factory-applied grease ensures long-term, maintenance-free operation in clean environments.
S7003 CDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | 15° contact angle and specific internal design for high-speed operation. |
| GB | Indicates light preload (Class B). This pre-set internal clearance ensures optimal rigidity and rotational accuracy after installation in a matched set. |
| HC | Refers to the hybrid ceramic construction, featuring ceramic balls for reduced weight, lower friction, and enhanced speed capability. |
| P4A | Denotes an ultra-precision tolerance class with very tight running accuracy limits on bore, outside diameter, and width, suitable for the most demanding spindle applications. |
S7003 CDGB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls significantly reduces centrifugal forces and operating temperature, directly contributing to the bearing's exceptional high-speed performance. This also results in lower vibration and extended service life.
- High Rigidity & Precision: The P4A tolerance class and light preload (GB) ensure minimal runout and high system rigidity. This is critical for applications requiring extreme positional accuracy and stability under load.
- Optimized for High Speeds: The phenolic resin cage is lightweight and possesses excellent sliding properties, making it ideal for high acceleration and deceleration, further supporting the bearing's limiting speed of 85,000 rpm.
- Sealed & Lubricated for Life: The integral seals protect the precision internals from contamination. Pre-lubricated with high-speed grease, the bearing is ready for immediate installation and offers maintenance-free operation within its specified temperature range.
S7003 CDGB/HCP4A Bearing Typical Application Areas
The S7003 CDGB/HCP4A is ideally suited for high-performance machinery where speed, precision, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, drilling, and grinding spindles.
- Precision Instruments: Coordinate measuring machines (CMM) and optical scanners.
- High-Speed Motors: Spindles for PCB drilling and dental handpieces.
- Aerospace & Defense: Gyroscopes, radar systems, and other critical navigation and control systems.
