7008 CE/HCP4ADBG3GMM2
Hybrid Ceramic Super Precision 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 CE/HCP4ADBG3GMM2 Bearing Product Overview & Core Advantages
The 7008 CE/HCP4ADBG3GMM2 is a **high-precision angular contact ball bearing** designed for demanding applications requiring exceptional accuracy and performance. This **duplex back-to-back (DB) matched set** delivers superior **rigidity** and stability under complex loading conditions. Featuring **ceramic balls** and **Phenolic cage** construction, it achieves outstanding **high-speed capabilities** while maintaining **P4A tolerance class** precision. The preloaded configuration ensures minimal axial and radial play, making it ideal for applications where positional accuracy and **high stiffness** are critical.
7008 CE/HCP4ADBG3GMM2 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series with 40mm bore, 68mm OD |
| CE | **Contact angle 15°** |
| HCP4A | **P4A tolerance class** with phenolic cage |
| DB | **Duplex Back-to-Back** arrangement |
| G3 | Preload level G3 |
| MM2 | Matched set of 2 bearings |
7008 CE/HCP4ADBG3GMM2 Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The **duplex back-to-back arrangement** creates a rigid bearing system capable of withstanding **combined loads** including radial, axial, and moment loads. This configuration provides superior **stiffness** and stability for precision applications.
High-Speed Performance: The combination of **ceramic balls** (silicon nitride) and **phenolic cage** significantly reduces centrifugal forces and friction, enabling **limiting speeds up to 43,000 rpm**. The lightweight construction minimizes inertial effects at high rotational speeds.
Precision Engineering: Manufactured to **P4A tolerance class** standards with tight dimensional control (bore tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration for precision applications.
Thermal Stability: The **phenolic cage material** offers excellent dimensional stability across the operating temperature range (-30°C to 110°C), maintaining consistent performance under thermal variations.
7008 CE/HCP4ADBG3GMM2 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring extreme accuracy and rigidity
- High-Speed Machining Centers: Applications demanding superior rotational accuracy at elevated speeds
- Precision Robotics: Robot arm joints and rotary tables where positional accuracy is critical
- Aerospace Components: Gyroscopes, navigation systems, and aircraft control surfaces
- Medical Equipment: High-speed dental handpieces, surgical robots, and imaging systems
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
