7203 ACDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7203 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7203 ACDGC/P4A is a high-precision single row angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This bearing features a 25° contact angle and moderate preload (Class C), making it ideally suited to handle combined radial and axial loads simultaneously. Manufactured to P4A tolerance class, it delivers superior running accuracy and rotational precision. Its universal matchable (SU) design allows for flexible mounting arrangements in sets, providing engineers with versatile solutions for complex spindle and shaft designs.
7203 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7203 | Basic bearing series designation (17mm bore, 40mm OD) |
| AC | Angular Contact design with 25° contact angle |
| DGC | Moderate preload designation (Class C) |
| P4A | High precision tolerance class (superior to ABEC 7) |
7203 ACDGC/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for superior rotational accuracy.
Optimized Load Capacity: The 25° contact angle provides excellent capability for handling combined radial and axial loads, with a dynamic load rating of 1989 lbf and static load rating of 900 lbf.
High-Speed Performance: The phenolic cage and optimized internal geometry enable a limiting speed of 103,000 rpm, making it suitable for high-speed spindle applications.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be arranged in sets of three to achieve specific preload and stiffness requirements without selective matching.
Premium Material Selection: Constructed from chrome steel for rings and balls, providing high hardness, wear resistance, and dimensional stability across the operating temperature range of -30°C to 110°C.
7203 ACDGC/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- High-Speed Motors: Precision electric motors and servo drives requiring minimal vibration
- Precision Instruments: Measuring equipment, optical instruments, and laboratory apparatus
- Aerospace Components: Guidance systems, gyroscopes, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
