S71922 ACB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71922 ACB/P4A
Basic Information
System of measurement
Metric
Weight
0.93 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
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
8.731 mm
Ball quantity
37
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
5558 lbf
Radial static load rating
5738 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1844.99
/ each
In Stock
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S71922 ACB/P4A Bearing Product Overview & Core Advantages
The S71922 ACB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. As a P4 (ABEC-7) tolerance class bearing, it is designed to handle significant combined loads—simultaneous radial and axial loads—with high reliability. Its compact design, featuring a 25° contact angle and preload, ensures high system rigidity and precise shaft positioning, making it an ideal choice for high-performance spindles and other precision machinery.
S71922 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Significance |
|---|---|---|
| S71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 20mm width) | Defines the core dimensions and internal geometry. |
| ACB | Specific internal design and contact angle (25°) | Optimized for high axial load capacity and rigidity. |
| P4A | Tolerance class P4 (ABEC-7) with specific running accuracy limits | Guarantees ultra-precise dimensions and minimal runout for high-speed, high-accuracy applications. |
S71922 ACB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row angular contact design with a 25° contact angle and preload provides exceptional axial and radial stiffness, minimizing deflection under load for superior machining accuracy.
- Superior Load Capacity: Engineered to support high combined loads, with a dynamic load rating of 5558 lbf and a static load rating of 5738 lbf.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 10,000 rpm. Factory-applied lubrication ensures optimal performance at these speeds.
- Sealed & Lubricated for Life: As a sealed bearing pre-filled with lubricant, it is protected from contamination and is designed for long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
- Premium Materials: Constructed from chrome steel for rings and balls, ensuring high durability and long service life.
S71922 ACB/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Rotary Tables
- High-Frequency Motors
- Medical and Dental Equipment
- Aerospace Instrumentation
