7022 ACD/HCPA9ALDT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7022 ACD/HCPA9ALDT
Basic Information
System of measurement
Metric
Weight
3.27 kg
Tolerance class
PA9A
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
25 °
Ball & Washer Dimensions
Ball diameter
19.05 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
37800 lbf
Radial static load rating
46800 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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
Price available upon request.
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7022 ACD/HCPA9ALDT Bearing Product Overview & Core Advantages
The 7022 ACD/HCPA9ALDT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) arrangement bearing set is preloaded and manufactured to PA9A tolerance class, delivering superior running accuracy and system rigidity. Its core advantage lies in its ability to handle high combined loads with a 25° contact angle, making it ideal for high-speed, high-precision spindles. The use of ceramic balls and a phenolic cage further enhances its high-speed capability and reduces rotational mass.
7022 ACD/HCPA9ALDT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex bearing set. |
| HCPA9A | High-Precision (P) tolerance class with specific running accuracy and geometric tolerances (PA9A). |
| L | Light preload applied to the bearing set. |
| DT | Matched arrangement: Duplex Tandem. Two bearings are mounted in tandem to primarily handle thrust loads in one direction. |
7022 ACD/HCPA9ALDT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and preload create an exceptionally rigid bearing system, capable of withstanding high combined radial and axial loads.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage allows for a very high limiting speed of 10,000 rpm, minimizing heat generation and power loss.
- Precision Engineering: Manufactured to PA9A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring high positional accuracy and smooth operation.
- Optimized for Performance: The open seal type is selected for applications where external lubrication is provided, minimizing torque for maximum high-speed performance.
7022 ACD/HCPA9ALDT Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Advanced Robotic Systems: High-accuracy joints and rotary actuators.
