7002 CEGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7002 CEGB/P4A
Basic Information
System of measurement
Metric
Weight
0.028 kg
Tolerance class
P4A
Seal type
Open
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
9 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
994 lbf
Radial static load rating
434 lbf
Limiting speed
115 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
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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7002 CEGB/P4A Bearing Product Overview & Core Advantages
The 7002 CEGB/P4A is a metric single row angular contact ball bearing engineered for applications demanding ultra-high precision and superior running accuracy. Positioned in the P4A tolerance class, this bearing is designed to handle combined loads with a 15° contact angle, providing excellent axial load capacity in one direction. Its light preload (Class B) ensures minimal deflection and smooth operation right from installation. Manufactured with chrome steel rings and balls and a phenolic resin cage, it is optimized for high-speed operation up to 115,000 rpm, making it an ideal choice for high-performance spindles and precision machinery.
7002 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7002 CEGB/P4A is decoded as follows:
- 7002: Basic designation indicating a metric, single row angular contact ball bearing with a 17mm bore, 35mm OD, and 9mm width.
- C: Denotes a 15° contact angle.
- E: Signifies an optimized internal design, often including a larger ball complement and reinforced structure for higher load capacity.
- G: Indicates the bearing is supplied with a light preload (Class B).
- B: Specifies the bearing is part of a Universal Matchable (SU) set, allowing for precise axial clearance control when mounted in pairs.
- /P4A: The tolerance class, signifying extremely tight dimensional and running accuracy tolerances superior to ABEC 7.
7002 CEGB/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: The P4A tolerance class ensures exceptional dimensional stability and running accuracy, critical for applications requiring minimal vibration and high positional precision. The light preload eliminates internal clearance, enhancing system rigidity and reducing non-repetitive runout.
- Optimized Load Capacity: The 15° contact angle and optimized internal design (E-suffix) provide a high thrust load capacity relative to its compact cross-section, making it suitable for applications with significant axial loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage offers excellent strength and guidance at high rotational speeds, contributing to the bearing's limiting speed of 115,000 rpm. This cage material also provides good slip and emergency running properties.
- Universal Matching Capability: As a Universal Matchable (SU) bearing, two 7002 CEGB/P4A bearings can be mounted in tandem, back-to-back, or face-to-face arrangements to support complex load configurations and achieve desired preload or clearance settings.
7002 CEGB/P4A Bearing Typical Application Areas
This high-precision angular contact bearing is predominantly used in:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motors and spindle drives.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and radar equipment.
- Medical Equipment: Dental handpieces and high-speed laboratory centrifuges.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
