7008 ACEGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7008 ACEGB/P4A Bearing Product Overview & Core Advantages
The 7008 ACEGB/P4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. Designed as a single bearing that is Universal Matchable (SU), it allows for precise axial preload adjustment when mounted in pairs. Its key advantages include superior performance under combined loads due to its 25° contact angle, high-speed capability enabled by its phenolic cage, and P4A tolerance class for ultra-precision operation. This bearing is pre-lubricated and optimized for high reliability in precision machinery.
7008 ACEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series with 40mm bore diameter |
| AC | Angular Contact design with 25° contact angle |
| E | Optimized internal design for enhanced load capacity |
| GB | Light preload / Class B |
| P4A | Ultra-precision tolerance class exceeding ABEC 7 |
7008 ACEGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The 25° contact angle and optimized internal geometry enable excellent performance under combined radial and axial loads. With a radial dynamic load rating of 2632 lbf and static rating of 1620 lbf, this bearing delivers reliable operation in demanding conditions.
High-Speed Performance: The phenolic cage provides superior strength-to-weight ratio, reducing centrifugal forces and enabling operation at limiting speeds up to 41,000 rpm. This makes it ideal for high-speed spindle applications.
Precision Engineering: Manufactured to P4A tolerance class, the bearing features tight dimensional control with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration for precision applications.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be mounted in pairs with precise preload control, eliminating the need for selective matching and simplifying installation.
7008 ACEGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and CNC equipment
- High-Speed Motors - Electric motors and generators requiring precision operation
- Precision Instrumentation - Measuring equipment and optical devices
- Aerospace Components - Guidance systems and aircraft instrumentation
- Medical Equipment - Dental handpieces and surgical tools
- Robotics - Precision joints and articulation points
