7011 CEGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7011 CEGB/P4A
Basic Information
System of measurement
Metric
Weight
0.39 kg
Tolerance class
P4A
Seal type
Open
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
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
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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In Stock
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7011 CEGB/P4A Bearing Product Overview & Core Advantages
The 7011 CEGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running precision. Its 15° contact angle and light preload (Class B) configuration make it ideally suited for handling combined loads, offering high rigidity and optimal performance in high-speed scenarios. As a Universal Matchable (SU) bearing, it can be supplied in sets of three for simplified mounting and enhanced system performance.
7011 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7011 | Basic bearing series, defining the bearing dimensions: 55mm bore, 90mm OD, 18mm width. |
| CE | Enhanced internal design with a 15° contact angle and optimized internal geometry. |
| GB | Specifies Light Preload (Class B) for reduced noise and vibration at high speeds. |
| P4A | Indicates a high-precision tolerance class with very tight dimensional and running accuracy limits. |
7011 CEGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A super-precision standards with exceptionally tight tolerances on bore, outside diameter, and width. This ensures minimal runout and superior rotational accuracy for demanding applications.
- Optimized Load Capacity: The 15° contact angle is engineered to efficiently support combined radial and axial loads. The light preload eliminates internal clearance, increasing system stiffness and positioning accuracy.
- High-Speed Performance: Features a lightweight, durable phenolic resin cage that reduces centrifugal forces, enabling a high limiting speed of 34,000 rpm. The cage is well-suited for high acceleration and deceleration.
- Universal Matching Design: As an SU Universal Matchable bearing, individual 7011 CEGB/P4A bearings can be universally paired in any combination to form a pre-loaded set (typically 2 or 3 bearings), simplifying installation and logistics.
- Premium Material Construction: Manufactured from chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational life.
7011 CEGB/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance machinery requiring high speed, high rigidity, and exceptional accuracy. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Robotics, aerospace actuation systems.
- High-Frequency Motors and Spindles: PCB drilling spindles, dental handpieces.
- Medical and Laboratory Equipment: Centrifuges, scanner assemblies.
- Test and Measurement Apparatus: Encoders, precision rotary tables.
