S7012 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7012 CEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.4 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
95 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
25
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3870 lbf
Radial static load rating
2902 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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S7012 CEGA/HCP4A Bearing Product Overview & Core Advantages
The S7012 CEGA/HCP4A is a super-precision angular contact ball bearing engineered for the most demanding high-speed and high-rigidity applications. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, while the combination of a ceramic ball material and P4A tolerance class ensures exceptional rotational accuracy, minimal heat generation, and extended service life. This bearing is designed to handle combined loads efficiently, making it an ideal choice for spindles requiring ultimate performance.
S7012 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7012 | Standard bearing series and size designation (60mm bore, 95mm OD, 18mm width). |
| CE | Hybrid ceramic balls (Silicon Nitride) for reduced centrifugal force, lower operating temperature, and higher speed capability. |
| GA | Precision phenolic resin cage, suitable for very high speeds and offering excellent strength-to-weight ratio. |
| HC | Indicates a set of universally matchable bearings. |
| P4A | Super-precision tolerance class with even tighter specifications than ABEC 7 (P4), ensuring ultra-low runout and vibration. |
S7012 CEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls significantly reduces friction, heat buildup, and wear, enabling a limiting speed of 36,000 rpm and superior performance in high-speed spindle applications.
- High Rigidity & Load Capacity: The 15° contact angle and precision-ground raceways provide excellent rigidity and the ability to support combined radial and axial loads simultaneously.
- Optimized High-Speed Cage: The lightweight phenolic cage (GA) ensures stability and minimal centrifugal force at extreme rotational speeds, contributing to the bearing's high dynamic performance.
- Precision & Reliability: Manufactured to P4A super-precision standards with tight dimensional tolerances, this bearing guarantees minimal vibration and maximum running accuracy for ultra-precise machinery.
- Universal Matching: As part of a universally matchable set, these bearings can be arranged in tandem, back-to-back, or face-to-face configurations to achieve the exact preload and stiffness required for the application.
S7012 CEGA/HCP4A Bearing Typical Application Areas
The S7012 CEGA/HCP4A is the bearing of choice for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling spindles.
- Precision Instrumentation: High-frequency spindles for PCB drilling and semiconductor manufacturing equipment.
- Aerospace & Defense: Gyroscopes, turbochargers, and other high-speed rotating systems.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
