7007 CEGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7007 CEGB/P4A
Basic Information
System of measurement
Metric
Weight
0.15 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2565 lbf
Radial static load rating
1474 lbf
Limiting speed
56 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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7007 CEGB/P4A Bearing Product Overview & Core Advantages
The 7007 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 offers superior dimensional stability and running accuracy. Its 15° contact angle and light preload (Class B) configuration make it ideal for handling combined loads—simultaneously supporting significant radial loads and axial loads in one direction. The phenolic resin cage and universal matching capability (SU designation) further enhance its suitability for high-speed, high-rigidity spindle arrangements.
7007 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7007 CEGB/P4A is decoded as follows:
- 7007: Standard series designation, indicating a 35mm bore, 62mm OD, and 14mm width.
- C: Signifies a 15° contact angle.
- E: Indicates an optimized internal design, often for higher speeds and loads.
- GB: Denotes Light Preload / Class B.
- P4A: The tolerance class, specifying extremely tight dimensional and running accuracy tolerances superior to ABEC 7.
7007 CEGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design, combined with the P4A tolerance class and light preload, provides exceptional system stiffness and minimizes runout, which is critical for machining accuracy.
- Superior Load Capacity: Engineered to handle combined radial and axial loads efficiently. The dynamic load rating of 2565 lbf and static load rating of 1474 lbf ensure reliable performance under demanding conditions.
- High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, enabling a high limiting speed of 56,000 rpm. The open design allows for efficient lubrication management.
- Universal Matching (SU): Bearings are universally matchable, allowing any bearing from a set of three to be mounted together in any combination (face-to-face, back-to-back, or tandem) to achieve the required stiffness and load configuration.
7007 CEGB/P4A Bearing Typical Application Areas
This precision bearing is predominantly used in high-performance machinery and systems, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling heads.
- High-Speed Motors and Spindles: In applications requiring high rotational accuracy and speed.
- Precision Instrumentation: Used in measuring devices and laboratory equipment.
- Robotics: For critical joints and arm assemblies requiring high rigidity and precision.
