7002 CE/HCPA9ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7002 CE/HCPA9ADGA
Basic Information
System of measurement
Metric
Weight
0.05 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
32 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
4.762 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1609 lbf
Radial static load rating
855 lbf
Limiting speed
127 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
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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7002 CE/HCPA9ADGA Bearing Product Overview & Core Advantages
The 7002 CE/HCPA9ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This universal matchable bearing features a 15° contact angle and is supplied as a pre-set pair, enabling it to accommodate combined radial and axial loads simultaneously. Its construction with a phenolic cage and ceramic balls facilitates high-speed operation up to 127,000 rpm, while the PA9A tolerance class ensures superior running accuracy and system rigidity.
7002 CE/HCPA9ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7002 CE/HCPA9ADGA deciphers as follows:
- 7002: Basic series designation, indicating a 15mm bore and 32mm outside diameter.
- C: Represents a 15° contact angle.
- E: Signifies the internal design has been optimized for high-speed performance.
- HC: Indicates the use of Hybrid Ceramic components (ceramic balls with steel rings).
- PA9A: Denotes the tolerance class, specifying extremely tight dimensional and running accuracy (superior to ABEC 7).
- DGA: Specifies the Universal Matchable (SU) arrangement and an Extra Light preload (Class A).
7002 CE/HCPA9ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially in high-speed applications.
- High Rigidity & Precision: The PA9A tolerance class and precise manufacturing ensure minimal runout and high system stiffness. The universal matchable design allows two bearings to be mounted in any configuration (back-to-back, face-to-face, or tandem) to optimize load handling and rigidity for the application.
- Superior High-Speed Capability: The lightweight phenolic cage and ceramic balls work in concert to enable a very high limiting speed of 127,000 rpm, making it ideal for spindle and turbine applications.
- Optimized Load Capacity: With a 15° contact angle and a dynamic load rating of 1609 lbf, this bearing is engineered to handle significant combined loads efficiently.
7002 CE/HCPA9ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where speed, precision, and reliability are critical. Key sectors include:
- Machine Tool Spindles: High-speed machining centers and grinding spindles.
- Precision Instruments: Dental handpieces, laboratory equipment.
- High-Speed Motors & Turbomachinery: Compressors, turbochargers, and small turbine systems.
- Semiconductor Manufacturing Equipment: Wafer handling robots and precision stages.
