S71907 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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S71907 CEGA/HCP4A Bearing Product Overview & Core Advantages
The S71907 CEGA/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and speed. Engineered to a P4A tolerance class, it offers superior running accuracy and dimensional stability. Its core advantages include the ability to accommodate combined loads (radial and axial) simultaneously, facilitated by a 15° contact angle. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life, making it an ideal solution for high-speed and high-rigidity spindle applications.
S71907 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings. |
| 1907 | Bore size code (35 mm). |
| CE | Contact angle of 15°. |
| GA | Precision preload level (Extra light / Class A). |
| HC | Hybrid Ceramic construction (Steel rings with ceramic balls). |
| P4A | High tolerance class for exceptional running accuracy and dimensional precision. |
S71907 CEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction and heat generation. This results in a higher limiting speed (56,000 rpm), reduced wear, and longer service life, especially in high-speed applications.
- Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable operation at very high speeds, offering excellent strength and guidance for the ceramic balls.
- Universal Matchable (SU): This bearing is universally matchable, allowing two bearings to be mounted in any arrangement (back-to-back, face-to-face, or tandem) without pre-set matching, simplifying installation and providing design flexibility for complex bearing arrangements.
- Sealed & Greased: The sealed design with factory-applied grease lubrication protects against contamination and provides reliable, maintenance-free operation within a wide temperature range of -30°C to 110°C.
- High Rigidity & Load Capacity: The angular contact design and extra light preload provide high system rigidity and precise running accuracy, capable of handling significant dynamic and static load ratings.
S71907 CEGA/HCP4A Bearing Typical Application Areas
The S71907 CEGA/HCP4A is engineered for the most demanding high-precision and high-speed machinery. Its primary applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling spindles and engraving machines.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Medical Equipment: Dental handpieces and high-speed centrifuges.
- Aerospace & Instrumentation: Gyroscopes and other precision navigation or measurement devices.
