S7008 ACEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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S7008 ACEGA/P4A Bearing Product Overview & Core Advantages
The S7008 ACEGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4A tolerance class, this bearing offers superior dimensional stability and running accuracy. Its 25° contact angle and extra light preload (Class A) make it ideally suited for handling combined radial and axial loads simultaneously, providing high rigidity and minimal deflection in precision spindle applications. The phenolic cage and sealed design contribute to its reliable operation at limiting speeds up to 41,000 rpm.
S7008 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7008 | Series designation for a super-precision angular contact ball bearing with 40mm bore diameter |
| AC | Angular Contact design with a 25° contact angle |
| EGA | Precision class designation (P4A tolerance) with specific internal clearance and preload |
| P4A | High-precision tolerance class exceeding ABEC 7 standards |
| Sealed | Integrated seals for contamination protection and lubricant retention |
S7008 ACEGA/P4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured from chrome steel with P4A tolerance class, ensuring exceptional dimensional accuracy and minimal runout for precision applications.
Optimized Load Capacity: The 25° contact angle and double-row ball complement (19 balls) provide excellent capacity for combined radial and axial loads, with a dynamic load rating of 2632 lbf and static load rating of 1620 lbf.
Superior High-Speed Performance: The phenolic cage material offers excellent strength-to-weight ratio and smooth operation at limiting speeds of 41,000 rpm, reducing centrifugal forces and maintaining stability.
Universal Matching Capability: Designed as Universal Matchable (SU), these bearings can be paired in sets of 2 for preloaded arrangements, simplifying installation and ensuring optimal performance in matched bearing applications.
Maintenance-Free Operation: The sealed design with factory-applied grease lubrication provides long-term protection against contamination and extends service intervals in demanding environments.
S7008 ACEGA/P4A Bearing Typical Application Areas
The S7008 ACEGA/P4A is ideally suited for high-precision, high-speed applications including:
- Machine Tool Spindles - CNC machining centers, grinding spindles
- High-Speed Motors - Precision electric motors, spindle motors
- Medical Equipment - Dental handpieces, surgical tools
- Aerospace Systems - Gyroscopes, navigation instruments
- Semiconductor Manufacturing - Wafer handling robots, precision positioning stages
- Test & Measurement Equipment - Coordinate measuring machines, optical instruments
