S7215 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S7215 CD/P4ADGA Bearing Product Overview & Core Advantages
The S7215 CD/P4ADGA is a precision double-row angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. Designed to simultaneously handle combined loads (radial and bidirectional axial loads), this bearing features a compact design that provides high system rigidity. Its P4A tolerance class and universal matchable (SU) designation ensure superior running accuracy and simplified installation in preloaded arrangements. The sealed construction and pre-lubrication contribute to long-term, maintenance-free operation, making it an ideal solution for high-performance industrial systems.
S7215 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S | Stainless Steel (Note: This contradicts provided ring/ball material of Chrome Steel. Please verify actual specification) |
| 7215 | Basic bearing series with 75mm bore, 130mm OD, 50mm width |
| CD | 15° contact angle, optimized for high-speed applications |
| P4A | High precision tolerance class exceeding ABEC 7 standards |
| DGA | Sealed design with grease filling for maintenance-free operation |
S7215 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double-row angular contact design provides superior stiffness and enables the bearing to handle significant combined radial and axial loads in both directions. With a 15° contact angle and extra light preload (Class A), it delivers optimal performance in precision applications.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for high-precision applications.
High-Speed Capability: The phenolic cage and optimized internal geometry support a limiting speed of 28,000 rpm, making it suitable for high-speed spindle applications.
Maintenance-Free Operation: The sealed construction with grease lubrication provides protection against contamination while operating within a temperature range of -30°C to 110°C.
S7215 CD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding machines
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Motors - Spindle motors and high-RPM industrial drives
- Medical Equipment - Dental handpieces and surgical tools requiring precision and reliability
- Aerospace Components - Guidance systems and auxiliary power units
