7005 CDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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7005 CDGA/P4A Bearing Product Overview & Core Advantages
The 7005 CDGA/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under P4A tolerance class, this bearing delivers superior running performance for high-speed spindles and precision machinery. Its 15° contact angle is optimized to support significant combined loads, effectively handling both radial and axial forces. The universal matching (SU) design allows for flexible mounting in various preload configurations, making it an ideal choice for complex, high-rigidity systems requiring precise axial positioning.
7005 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| 7005 | Basic designation: 25mm bore, 47mm OD |
| C | 15° contact angle |
| DG | Universal matchable bearing (DUplex pair) |
| A | Extra light preload (Class A) |
| P4A | High precision tolerance class (superior to ABEC 7) |
7005 CDGA/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with extremely tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for superior rotational accuracy.
High-Speed Capability: The phenolic resin cage provides excellent guidance for the 14 precision balls while reducing friction and weight, enabling limiting speeds up to 56,000 rpm. The optimized 15° contact angle balances axial and radial load capacity while maintaining high-speed performance.
Universal Matching Flexibility: As a universal matchable (SU) bearing, the 7005 CDGA/P4A can be paired in various arrangements (back-to-back, face-to-face, or tandem) to create preloaded bearing sets that deliver enhanced system rigidity and precise axial positioning.
Superior Material Construction: Manufactured from chrome steel for both rings and balls, providing excellent wear resistance and durability under high-stress conditions, with a dynamic load rating of 2151 lbf and static load rating of 1170 lbf.
7005 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines
- Precision Instrumentation: Measuring equipment, optical scanners, and laboratory instruments
- High-Speed Motors: Servo motors, spindle motors, and high-frequency electric motors
- Aerospace Components: Gyroscopes, navigation systems, and aircraft instrumentation
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging devices
