71926 CD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71926 CD/P4A
Basic Information
System of measurement
Metric
Weight
1.55 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
180 mm
Outside diameter tolerance
-0.01mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
27
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
20768 lbf
Radial static load rating
24300 lbf
Limiting speed
11 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:
$ 1752.49
/ each
In Stock
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71926 CD/P4A Bearing Product Overview & Core Advantages
The 71926 CD/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior performance under combined loads. As a P4 (ABEC-7) tolerance class bearing, it offers exceptional dimensional accuracy and running precision. Its key advantage lies in its ability to support combined radial and axial loads simultaneously, making it ideal for high-speed spindles and precision machinery where high rigidity and operational reliability are critical. The bearing comes pre-lubricated and is available with a preload for immediate installation and optimal performance.
71926 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 71926 CD/P4A is decoded as follows:
- 71926: Basic bearing series, indicating a light series, single-row angular contact ball bearing with a 130mm bore.
- C: Denotes a 15° contact angle, optimized for high-speed applications with moderate axial load capacity.
- D: Indicates the bearing is supplied with a specific preload class for enhanced rigidity and precise rotational accuracy.
- P4A: Specifies the tolerance class. P4 is equivalent to ABEC-7, representing a very high precision grade. The "A" may indicate specific internal design or grouping for matched sets, though this is a single bearing.
71926 CD/P4A Bearing Structural Features & Performance Benefits
- High Precision and Rigidity: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration. The 15° contact angle and applied preload work in concert to provide high system stiffness, which is crucial for maintaining accuracy under load.
- Superior Load Capacity: With a dynamic load rating of 20,768 lbf and a static load rating of 24,300 lbf, it is engineered to handle significant combined loads.
- High-Speed Capability: The phenolic resin cage is lightweight and robust, contributing to a high limiting speed of 11,000 rpm. This makes it suitable for demanding high-speed applications.
- Optimized Material and Lubrication: Constructed from chrome steel for both rings and balls, ensuring high durability and fatigue resistance. The bearing is pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
71926 CD/P4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and High-Frequency Motors.
- Industrial Pumps and Compressors.
- Aerospace and Defense instrumentation and control systems.
- Medical Equipment such as high-speed dental handpieces and imaging devices.
