7022 CD/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7022 CD/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
3.27 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
170 mm
Outside diameter tolerance
-0.004mm to 0
Width
56 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
19.05 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
40050 lbf
Radial static load rating
48600 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7022 CD/HCP4ADBA Bearing Product Overview & Core Advantages
The 7022 CD/HCP4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched back-to-back (DB) arrangement is preloaded to Extra Light / Class A specifications, providing superior rotational stability and minimal runout. Its construction, featuring ceramic balls and a phenolic cage, enables outstanding high-speed performance and the ability to handle combined radial and axial loads simultaneously. As a P4A tolerance class bearing, it guarantees ultra-precise operation, making it ideal for high-reliability, high-precision machinery.
7022 CD/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7022 CD/HCP4ADBA provides detailed technical specifications:
- 7022: Basic bearing series, indicating a 110 mm bore, 170 mm OD, and 56 mm width.
- C: Represents a 15° contact angle, optimized for handling axial loads.
- D: Signifies the bearing is part of a Duplex (matched pair) set.
- HC: Indicates the use of Hybrid Ceramic balls (Silicon Nitride).
- P4A: Denotes an ultra-precision tolerance class exceeding ABEC 7/ISO P4, ensuring extremely tight dimensional and running accuracy.
- DB: Specifies the Back-to-Back mounting arrangement of the duplex pair, which provides high moment rigidity.
- A: Identifies the preload level as Extra Light (Class A).
7022 CD/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide, rigid support system that effectively resists moment loads and ensures exceptional shaft positioning accuracy.
- Superior High-Speed Capability: The combination of lightweight phenolic resin cage and hybrid ceramic balls (lower density and reduced centrifugal force) allows for a very high limiting speed of 16,250 rpm.
- Enhanced Load Capacity: The 15° contact angle and robust construction enable the bearing to sustain significant combined (radial and axial) loads.
- Precision Performance: Manufactured to P4A tolerance class with a Class A preload, this bearing delivers minimal vibration, low noise, and ultra-precise rotation for the most demanding applications.
- Reduced Heat Generation: Ceramic balls have a lower coefficient of thermal expansion than steel and exhibit superior rolling characteristics, contributing to cooler running at high speeds.
7022 CD/HCP4ADBA Bearing Typical Application Areas
This bearing is engineered for high-performance applications where precision, speed, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motors and Spindles: Motors for PCB drilling and routing.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
