S7011 CEGA/HCPA9A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7011 CEGA/HCPA9A
Basic Information
System of measurement
Metric
Weight
0.37 kg
Tolerance class
PA9A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 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
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3780 lbf
Radial static load rating
2745 lbf
Limiting speed
46 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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S7011 CEGA/HCPA9A Bearing Product Overview & Core Advantages
The S7011 CEGA/HCPA9A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional speed capability and rigidity. This sealed bearing features a universal matchable (SU) design, allowing two bearings to be mounted in any arrangement (back-to-back, face-to-face, or tandem) to achieve optimal performance. Its core advantages include the ability to handle combined loads (radial and axial), superior running accuracy from the PA9A tolerance class, and high-speed operation enabled by its ceramic balls and phenolic cage.
S7011 CEGA/HCPA9A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7011 | Basic bearing designation, indicating a 55mm bore, 90mm OD, and 18mm width. |
| CE | Hybrid bearing featuring Ceramic balls (Silicon Nitride) for reduced weight, lower friction, and higher speed capability. |
| GA | Indicates a universal matchable (SU) bearing with an Extra light (A) preload. |
| HC | Refers to the Phenolic (Polyamide) cage, which is lightweight and ideal for high-speed operation. |
| PA9A | Denotes an ultra-high-precision tolerance class, ensuring minimal runout and vibration for critical applications. |
S7011 CEGA/HCPA9A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 15° contact angle and robust double-row design provide high rigidity, enabling the bearing to support significant combined radial and axial loads.
- Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic cage reduces centrifugal forces and friction, allowing for a high limiting speed of 46,000 rpm.
- Precision & Accuracy: Manufactured to the stringent PA9A tolerance class, this bearing guarantees exceptional running accuracy and minimal vibration, which is critical for spindle applications.
- Sealed & Pre-Lubricated: The integral seals protect against contamination, and the bearing is pre-lubricated with grease, offering a long service life within the specified temperature range of -30°C to 110°C.
S7011 CEGA/HCPA9A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance machinery where speed, accuracy, and reliability are paramount. Key application areas include:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Dental and Medical Handpiece Drives
- Aerospace Actuators and Control Systems
