S7001 CEGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7001 CEGB/P4A
Basic Information
System of measurement
Metric
Weight
0.021 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
28 mm
Outside diameter tolerance
-0.004mm to 0
Width
8 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
718 lbf
Radial static load rating
302 lbf
Lubrication
Grease
Matched arrangement
Single
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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S7001 CEGB/P4A Bearing Product Overview & Core Advantages
The S7001 CEGB/P4A is a precision single-row angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed performance. Positioned in the super-precision P4A tolerance class, it delivers unmatched dimensional stability and running accuracy. Its key advantage lies in its ability to support combined loads (simultaneous radial and axial loads) efficiently, making it ideal for high-rigidity, high-speed spindles and precision machinery where minimal runout and thermal stability are critical.
S7001 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7001 | Basic bearing series, denoting a metric, super-precision angular contact ball bearing. |
| C | 15° contact angle, optimized for high-speed operation and axial load capacity. |
| E | Optimized internal geometry (contour) for enhanced performance and load distribution. |
| G | Specifies a Light preload (Class B), reducing deflection and ensuring precise shaft positioning. |
| B | Indicates a Universal Matchable (SU) bearing, allowing for precise pairing in duplex sets. |
| P4A | Denotes the super-precision tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional running accuracy. |
S7001 CEGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on the bore, outside diameter, and width. The light preload eliminates internal clearance, providing superior system stiffness and minimal axial/radial deflection under load.
- Optimized High-Speed Performance: The phenolic resin cage is lightweight and possesses excellent sliding properties, reducing centrifugal forces and friction at high rotational speeds. Combined with the 15° contact angle, this design enables stable operation at very high RPMs.
- Superior Material Integrity: Constructed from high-grade chrome steel for both rings and balls, ensuring high hardness, wear resistance, and long-term dimensional stability under demanding operating conditions.
- Sealed and Pre-Lubricated: The sealed design protects the precision internals from contaminants. It is factory-filled with high-performance grease, providing reliable lubrication across the specified temperature range (-30°C to 110°C) and contributing to a maintenance-free service life.
S7001 CEGB/P4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Medical Equipment: Dental handpieces, laboratory centrifuges.
- Robotics: High-accuracy joints and arm assemblies.
