S7019 CEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7019 CEGA/P4A Bearing Product Overview & Core Advantages
The S7019 CEGA/P4A is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a single bearing with a 15° contact angle and extra light preload (Class A), it delivers exceptional rotational accuracy and minimal heat generation. Its standout feature is the P4A tolerance class, signifying superior dimensional and running accuracy beyond standard P4, making it ideal for machine tool spindles and other precision equipment where uncompromising performance is critical.
S7019 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7019 | Basic Bearing Series & Size | Indicates a 95mm bore, 145mm OD, 24mm width super-precision bearing. |
| C | 15° Contact Angle | Optimized for high-speed operation with excellent axial load capacity. |
| E | Optimized Internal Design | Enhanced internal geometry for lower torque, friction, and heat. |
| GA | Light Preload (Universal Matchable) | Bearing is supplied with a light preload and is Universal Matchable (SU), allowing for precise axial play adjustment when paired with another identical bearing. |
| P4A | Tolerance Class | Denotes super-precision levels with tolerances tighter than ABEC 7 (P4), ensuring extreme running accuracy and system stability. |
S7019 CEGA/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The combination of a phenolic resin cage, a 15° contact angle, and optimized internal design allows for a high limiting speed of 21,000 rpm. This makes it a premier choice for high-speed spindle applications.
Exceptional Rigidity and Accuracy: Manufactured to P4A super-precision standards with extremely tight dimensional tolerances, this bearing provides superior system rigidity and minimal runout, which is critical for achieving high surface finishes and machining accuracy.
Superior Load Capacity: The angular contact design enables it to support significant combined loads (radial and axial loads simultaneously). With a dynamic load rating of 9,945 lbf and a static load rating of 8,550 lbf, it offers reliable performance under demanding conditions.
Optimized for Matched Sets: As a Universal Matchable (SU) bearing, it can be universally paired with another S7019 CEGA/P4A bearing in any combination to form a back-to-back (DB) or face-to-face (DF) arrangement, providing design flexibility for preload control.
S7019 CEGA/P4A Bearing Typical Application Areas
The S7019 CEGA/P4A is engineered for high-performance machinery where precision, speed, and reliability are non-negotiable. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors operating at very high RPMs.
- Robotics: High-accuracy joints and rotary actuators.
