S7015 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7015 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The S7015 CE/HCP4ADGA is a high-precision, double row angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. Engineered with a 15° contact angle and an Extra Light (A) preload, it is optimized to handle combined loads—significant radial loads alongside bidirectional axial loads—simultaneously. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs without selective assembly. Featuring a P4A super-precision tolerance class, ceramic balls, and phenolic resin cage, this bearing delivers superior high-speed performance, thermal stability, and extended service life, making it an ideal choice for ultra-precise, high-reliability spindle systems.
S7015 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7015 | Double Row Angular Contact Ball Bearing Series | Denotes the basic bearing type and size series. |
| CE | Ceramic Balls (Hybrid Bearing) | Provides lower density, reduced centrifugal force, and electrical insulation, enabling higher limiting speeds. |
| HC | Phenolic Resin Cage | Offers excellent strength-to-weight ratio, reduced friction, and suitability for high-speed operation. |
| P4A | Super Precision Tolerance Class | Guarantees extremely tight dimensional and running accuracy for superior rotational performance. |
| DGA | Sealed on Both Sides, Grease Lubricated | Provides effective contamination exclusion and is pre-lubricated for long-term, maintenance-free operation. |
S7015 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design and robust construction provide significantly higher rigidity compared to single row bearings, enabling stable support under complex combined loads. The 15° contact angle is optimally balanced for handling substantial bidirectional axial forces in addition to high radial loads.
Superior High-Speed Performance: The combination of ceramic balls (lower mass) and a lightweight phenolic cage (HC) minimizes centrifugal forces and friction, directly contributing to the high limiting speed of 28,000 rpm. This makes it a premier choice for high-speed spindle applications.
Enhanced Precision & Longevity: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration for exceptional rotational accuracy. The integral seals (DGA) protect the precision-ground chrome steel rings and hybrid components from contaminants, while the pre-applied grease ensures reliable lubrication throughout the specified temperature range (-30°C to 110°C), resulting in a long, maintenance-free service life.
S7015 CE/HCP4ADGA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance machinery where precision, speed, and reliability are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for CNC routers and engraving machines.
- Medical Equipment: High-speed drills and dental handpieces.
- Aerospace & Defense: Gyroscopes and other critical navigation or control systems.
