7005 CEGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7005 CEGB/P4A Bearing Product Overview & Core Advantages
The 7005 CEGB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance under combined loads. Operating under P4A tolerance class, this bearing delivers exceptional running accuracy and rotational stability. Its 15° contact angle is optimized to handle significant axial loads in one direction while supporting radial loads, making it ideal for high-speed spindles and precision machinery. The light preload (Class B) ensures minimal deflection and smooth operation right from installation. Manufactured from chrome steel and featuring a phenolic cage, it offers excellent dimensional stability and is capable of operating at limiting speeds up to 85,000 rpm.
7005 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 7005: Basic bearing series designation (25mm bore, 47mm OD)
- C: Indicates a 15° contact angle
- E: Represents optimized internal design for high-speed performance
- GB: Specifies light preload (Class B)
- P4A: Denotes super precision tolerance class (exceeding ABEC 7 standards)
7005 CEGB/P4A Bearing Structural Features & Performance Benefits
The 7005 CEGB/P4A incorporates several advanced structural features that deliver distinct performance advantages:
- High Precision Construction: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and minimal vibration.
- Optimized Internal Geometry: Features 14 high-precision chrome steel balls with 6.35mm diameter, arranged to maximize load distribution and minimize friction.
- High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and guidance, enabling reliable operation at 85,000 rpm limiting speed.
- Superior Load Capacity: With radial dynamic load rating of 1872 lbf and static load rating of 934 lbf, it handles combined loads effectively while maintaining precision.
- Universal Matching Design (SU): Can be universally matched with identical bearings in various configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements.
7005 CEGB/P4A Bearing Typical Application Areas
The 7005 CEGB/P4A finds extensive use in precision applications requiring high rotational accuracy and speed capabilities:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Robotics: Joint and arm mechanisms requiring minimal backlash
- Medical Equipment: Dental handpieces, surgical tools, and imaging systems
- Aerospace Systems: Gyroscopes, navigation instruments, and control mechanisms
- High-Speed Motors: Spindle motors, servo motors, and precision drives
- Semiconductor Manufacturing: Wafer handling equipment and precision positioning systems
