S7004 ACEGA/P4A
Sealed 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
S7004 ACEGA/P4A Bearing Product Overview & Core Advantages
The S7004 ACEGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to ABEC 7 / P4A tolerance class, this bearing delivers extremely tight dimensional control for superior running precision. Its 25° contact angle and extra light preload (Class A) configuration make it ideal for handling combined radial and axial loads simultaneously, while the phenolic cage enables outstanding high-speed capabilities. As a Universal Matchable (SU) bearing, it can be paired with another identical bearing to form a precisely matched set for optimal preload and stiffness.
S7004 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7004 | Super-precision angular contact bearing series with 20mm bore, 42mm OD, 12mm width |
| AC | Angular Contact design with 25° contact angle |
| EGA | Pre-greased with high-performance grease |
| P4A | Super precision tolerance class (equivalent to ABEC 7) |
S7004 ACEGA/P4A Bearing Structural Features & Performance Benefits
High-Speed Performance: The phenolic resin cage provides excellent strength-to-weight ratio and operates effectively at high rotational speeds up to 100,000 rpm, making it suitable for demanding spindle applications.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration for superior positioning accuracy.
Optimized Load Capacity: The 25° contact angle and precision-ground raceways enable efficient handling of combined radial and axial loads, with dynamic load rating of 1609 lbf and static load rating of 731 lbf.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be precisely paired with another identical bearing to create a preloaded set, eliminating the need for selective matching and simplifying installation.
Ready-to-Use Lubrication: Factory-preloaded with high-quality grease suitable for a temperature range of -30°C to 110°C, providing immediate operation without additional lubrication requirements.
S7004 ACEGA/P4A Bearing Typical Application Areas
The S7004 ACEGA/P4A is specifically engineered for high-precision, high-speed applications including:
- Machine Tool Spindles - CNC machining centers, grinding spindles
- High-Speed Motors - Precision electric motors, servo motors
- Medical Equipment - Dental handpieces, surgical tools
- Aerospace Components - Gyroscopes, navigation systems
- Semiconductor Manufacturing - Wafer handling robots, precision positioning stages
- Test and Measurement Equipment - Coordinate measuring machines, optical instruments
