7022 ACDGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7022 ACDGA/HCP4AL
Basic Information
System of measurement
Metric
Weight
1.63 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
28 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
23400 lbf
Radial static load rating
23400 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
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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In Stock
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7022 ACDGA/HCP4AL Bearing Product Overview & Core Advantages
The 7022 ACDGA/HCP4AL is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single bearing features a 25° contact angle and is manufactured to P4A super-precision tolerance standards, ensuring minimal runout and vibration. Its core advantages include the ability to handle combined loads (radial and axial) efficiently, superior high-speed capabilities facilitated by a phenolic cage and ceramic balls, and outstanding operational stability due to its extra light preload (Class A). It is universally matchable, allowing for flexible mounting configurations in precision assemblies.
7022 ACDGA/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
The model number 7022 ACDGA/HCP4AL is decoded as follows:
- 7022: Basic series code, indicating a metric angular contact bearing with a 110 mm bore and 170 mm outside diameter.
- A: Signifies a 25° contact angle.
- CD: Indicates a universally matchable (SU) design, allowing bearings to be mounted in any combination (back-to-back, face-to-face, or tandem) without pre-set internal clearance.
- GA: Denotes an Extra Light Preload (Class A).
- HCP4A: A composite suffix where HC indicates the use of Hybrid Ceramic balls (Silicon Nitride), P4A specifies the super-precision tolerance class (exceeding ABEC 7).
- L: Signifies that the bearing is Lubricated with a high-performance grease suitable for its specified temperature range.
7022 ACDGA/HCP4AL Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic (Si3N4) balls significantly reduces friction, heat generation, and wear. This extends service life and enables higher limiting speeds compared to all-steel bearings. The ceramic balls are also electrically insulating and have a lower coefficient of thermal expansion.
- Phenolic Resin Cage: The lightweight and robust phenolic cage contributes to smooth operation at high speeds, offering excellent strength and guidance with minimal friction.
- Super-Precision P4A Tolerance: Manufactured to the tightest dimensional and running accuracy standards, this ensures superior rotational precision, reduced vibration, and enhanced system rigidity.
- Optimized Preload: The extra light preload (Class A) minimizes bearing deflection under load, providing high running accuracy and stiffness without generating excessive heat, which is critical for high-speed spindles.
- Universal Matchability: The Universal Matchable (SU) design provides flexibility in mounting arrangements, simplifying inventory and assembly for complex bearing sets.
7022 ACDGA/HCP4AL Bearing Typical Application Areas
This bearing is ideally suited for the most demanding high-precision and high-speed machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy actuators.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
