71922 ACD/P4AQBCC
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71922 ACD/P4AQBCC
Basic Information
System of measurement
Metric
Weight
3.44 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
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
80 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°C to 110 °C
Radial dynamic load rating
35100 lbf
Radial static load rating
61875 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71922 ACD/P4AQBCC Bearing Product Overview & Core Advantages
The 71922 ACD/P4AQBCC is a precision quadruplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing features a back-to-back quadruplex (QBC) arrangement, enabling it to withstand combined radial and axial loads with high stability. Its moderate preload (Class C) ensures consistent performance, minimal runout, and is ideal for high-precision, high-reliability systems where maximum stiffness is critical.
71922 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 80mm width) |
| ACD | Angular Contact Design with a 25° contact angle |
| P4A | High Precision Tolerance Class (exceeding ABEC 7/ISO P4) |
| QBCC | Quadruplex Back-to-Back (QBC) arrangement with Moderate Preload (Class C) |
71922 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
- Exceptional Rigidity & Load Capacity: The quadruplex back-to-back configuration creates an extremely rigid bearing system capable of handling significant combined radial and axial loads (35,100 lbf dynamic, 61,875 lbf static). This arrangement provides optimal moment load resistance and operational stability.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for high-accuracy applications.
- Optimized Internal Design: Features 28 precision balls of 12.7mm diameter and a phenolic cage that contributes to smooth operation at the limiting speed of 10,000 rpm while providing excellent lubrication retention.
- Preload Configuration: The moderate preload (Class C) eliminates internal clearance, enhancing system stiffness and positioning accuracy while reducing noise and vibration.
- Material Excellence: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and durability across the operating temperature range of -30°C to 110°C.
71922 ACD/P4AQBCC Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring maximum rigidity and precision
- Precision Gearboxes: Industrial transmission systems demanding high load capacity and minimal deflection
- Robotic Systems Articulated arms and precision positioning mechanisms
- Aerospace Components: Flight control systems and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical robotics
- Test & Measurement Instruments: Coordinate measuring machines and optical inspection systems
