7008 CD/P4ADBG35
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7008 CD/P4ADBG35 Bearing Product Overview & Core Advantages
The 7008 CD/P4ADBG35 is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This matched duplex pair in back-to-back (DB) configuration delivers superior performance in handling combined loads (radial and axial) from both directions simultaneously. Manufactured to P4A tolerance class, it offers extremely tight dimensional control for high-precision positioning systems. The phenolic cage and optimized 15° contact angle contribute to its outstanding high-speed capability up to 41,000 rpm, making it ideal for machine tool spindles and other precision rotary applications.
7008 CD/P4ADBG35 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series with 40mm bore, 68mm OD, 30mm width |
| CD | Duplex bearing pair in back-to-back (DB) arrangement |
| P4A | High precision tolerance class with enhanced running accuracy |
| DB | Confirmed back-to-back mounting arrangement |
| G35 | Preload level specification for optimal rigidity |
7008 CD/P4ADBG35 Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and provides stable support under combined radial and axial loads. This arrangement significantly increases system stiffness compared to single bearings.
Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, critical for applications requiring high rotational accuracy. The tight dimensional tolerances (-0.004mm to 0 on bore and OD) guarantee consistent performance and precise fitment.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the impressive limiting speed of 41,000 rpm. The optimized 15° contact angle provides balanced load distribution for efficient high-speed operation.
Preload Optimization: The G35 preload specification ensures proper internal clearance control, delivering immediate response and minimizing deflection under load for applications demanding high positional accuracy.
7008 CD/P4ADBG35 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling applications
- Precision Rotary Systems: Industrial robots, rotary tables, and indexing mechanisms
- High-Speed Motors: Spindle motors, high-frequency motors, and precision drive systems
- Medical Equipment: Dental handpieces, laboratory centrifuges, and medical imaging devices
- Aerospace Components: Gyroscopes, navigation systems, and aircraft instrumentation
