S7003 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7003 CEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.032 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1316 lbf
Radial static load rating
574 lbf
Limiting speed
85 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
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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S7003 CEGA/HCP4A Bearing Product Overview & Core Advantages
The S7003 CEGA/HCP4A is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a single bearing, it is part of a universally matchable (SU) set, allowing for precise preload control when mounted in pairs. Its core advantages stem from its P4A tolerance class, ceramic balls, and phenolic cage, which collectively deliver exceptional rotational accuracy, reduced friction, and superior thermal stability. This bearing is engineered to handle combined loads efficiently, making it an ideal choice for ultra-precise spindles.
S7003 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7003 | Basic bearing designation, indicating a 17mm bore, 35mm OD, and 10mm width. |
| CE | Indicates a 15° contact angle and universal matching (SU) capability. |
| GA | Specifies an Extra Light (Class A) preload. |
| HC | Denotes the use of hybrid ceramic balls (Silicon Nitride). |
| P4A | Specifies the super-precision tolerance class, exceeding ABEC 7 standards. |
S7003 CEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, especially at high speeds up to 85,000 rpm.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction, contributing to smooth operation and high limiting speed.
- Super-Precision P4A Tolerances: With extremely tight bore, OD, and width tolerances, this bearing ensures minimal runout and superior rotational accuracy for critical applications.
- Optimized 15° Contact Angle: This design provides an excellent balance between radial load capacity and axial load capacity, making it highly effective for combined loads.
- Universal Matchable (SU): Allows for simplified mounting and precise preload adjustment when used in pairs (back-to-back or face-to-face), ensuring optimal system rigidity and performance.
S7003 CEGA/HCP4A Bearing Typical Application Areas
This bearing is specifically engineered for high-performance machinery requiring the utmost precision and speed.
- High-Frequency CNC Spindles
- Precision Grinding Machine Spindles
- High-Speed Machining Centers
- PCB Drilling & Milling Spindles
- Advanced Robotics and Aerospace Actuators
