7205 CDGA/P4A
7200 & 7300 Series 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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7205 CDGA/P4A Bearing Product Overview & Core Advantages
The 7205 CDGA/P4A is a single-row angular contact ball bearing designed for ultra-precision applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class with an Extra Light (Class A) preload, this bearing delivers superior running precision and minimal axial/radial runout. Its 15° contact angle is optimized for handling combined loads with excellent high-speed capability, making it ideal for machine tool spindles and precision rotary systems requiring uncompromising performance.
7205 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7205 | Standard bearing series designation (25mm bore, 52mm OD) |
| C | 15° contact angle design |
| DG | Universal Matchable bearing (can be paired in various arrangements) |
| A | Extra Light preload (Class A) |
| P4A | Super precision tolerance class (higher than ABEC 7) |
7205 CDGA/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy.
High-Speed Capability: Features a phenolic resin cage that reduces friction and enables limiting speeds up to 100,500 rpm, suitable for demanding spindle applications.
Superior Rigidity: The Extra Light preload (Class A) eliminates internal clearance, providing enhanced system stiffness and precise rotational characteristics.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be precisely paired in sets of up to 4 bearings for optimized load distribution and system performance.
Premium Materials: Constructed from chrome steel rings and balls with 13 precision balls of 7.938mm diameter, ensuring long service life and reliable operation.
7205 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Rotary Systems - Coordinate measuring machines and optical instruments
- High-Speed Motors - Servo motors and high-frequency spindle drives
- Aerospace Components - Gyroscopes and navigation system assemblies
- Medical Equipment - Dental handpieces and laboratory instrumentation
