71922 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71922 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.73 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.009mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
13162 lbf
Radial static load rating
15300 lbf
Limiting speed
14 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 1536.91
/ each
In Stock
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71922 ACD/HCP4A Bearing Product Overview & Core Advantages
The 71922 ACD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and speed capability. This single-row bearing features a 25° contact angle and is supplied with a preload, delivering superior axial rigidity and precise shaft positioning. Its construction with ceramic balls and a phenolic cage enables outstanding high-speed performance, reduced friction, and extended service life. Designed to a P4 (ABEC-7) tolerance class, it is the ideal solution for high-performance spindles and other precision machinery.
71922 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 20mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a high-precision design with optimized internal geometry. |
| HC | Hybrid Ceramic construction, indicating ceramic balls and steel rings. |
| P4 | Specifies the tolerance class (equivalent to ABEC-7), ensuring ultra-precise dimensions and runout. |
| A | Indicates the bearing is supplied with a preload for enhanced rigidity. |
71922 ACD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables a limiting speed of 14,000 rpm. This construction also provides superior resistance to wear and electrical arcing.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability at high speeds and provides superior guidance for the ceramic balls, contributing to smooth and quiet operation.
- Preloaded Design: The bearing is supplied with an axial preload, which eliminates internal clearance. This results in high system rigidity, improved rotational accuracy, and reduced vibration, which is critical for machining finish and tool life.
- High Load Capacity: With a dynamic load rating of 13,162 lbf and a static load rating of 15,300 lbf, this bearing is capable of handling significant combined loads (radial and axial) simultaneously.
- Precision Ground to P4: All bearing dimensions and running accuracy are manufactured to the stringent P4 tolerance class, ensuring predictable performance and interchangeability in precision assemblies.
71922 ACD/HCP4A Bearing Typical Application Areas
This high-speed precision bearing is ideally suited for applications where maximum rotational speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for dental handpieces and small precision motors.
- Robotics: High-precision joints and arm actuators.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
