S7008 ACB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S7008 ACB/P4A Bearing Product Overview & Core Advantages
The S7008 ACB/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to P4 (ABEC-7) tolerance class, it is optimized to handle combined loads—simultaneous radial and axial forces—with high reliability. Its compact design, featuring a 15mm width, makes it ideal for space-constrained, high-performance assemblies. Preloaded and pre-lubricated, this bearing offers immediate, maintenance-free operation and is capable of high-speed rotation up to 26,000 rpm, making it a superior choice for precision machinery.
S7008 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7008 | Series designation for a high-precision angular contact ball bearing with a 40mm bore. |
| ACB | Angular Contact Bearing, 25° contact angle, optimized for combined loads. |
| P4A | Indicates P4 (ABEC-7) tolerance class and specific internal design for high precision and preload. |
S7008 ACB/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The 25° contact angle and optimized internal geometry enable the bearing to support significant combined radial and axial loads (dynamic: 1550 lbf, static: 1192 lbf), ensuring stable operation under demanding conditions.
High-Speed Performance: The phenolic resin cage reduces friction and inertia, contributing to the high limiting speed of 26,000 rpm. This makes the bearing suitable for high-speed spindles and other rapid-rotation applications.
Precision & Durability: Manufactured to P4 (ABEC-7) precision with tight dimensional tolerances, the bearing ensures minimal runout and vibration. Components made from chrome steel provide high wear resistance and long service life.
Maintenance-Free Operation: The bearing is sealed and pre-lubricated, protecting against contamination and providing consistent performance across a temperature range of -30°C to 110°C without requiring relubrication.
S7008 ACB/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Motors
- Precision Grinding Equipment
- Industrial Pumps & Compressors
- Robotic Drives & Actuators
- Medical & Laboratory Instruments
