71926 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71926 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
1.3 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
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
27
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
19598 lbf
Radial static load rating
22950 lbf
Limiting speed
12 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:
$ 1752.77
/ each
In Stock
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71926 ACD/HCP4A Bearing Product Overview & Core Advantages
The 71926 ACD/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Positioned in the P4 (ABEC-7) tolerance class, it guarantees exceptional running accuracy. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial and axial loads—thanks to its 25° contact angle. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life, making it ideal for high-speed, high-rigidity applications.
71926 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 71926 ACD/HCP4A is decoded as follows:
- 71926: Basic series designation for a high-precision angular contact bearing.
- ACD: Designates a 25° contact angle and optimized internal geometry for high axial load capacity.
- HCP4A: Indicates the bearing is supplied as a matched set (H), from a P4 (ABEC-7) tolerance class group (C), and is preloaded (P4A) for maximum rigidity and rotational accuracy in the application.
71926 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class and supplied with a preload, this bearing provides exceptional shaft positioning accuracy and system stiffness, minimizing deflection under load.
- Superior Load Capacity: The 25° contact angle is optimized to handle substantial combined radial and axial loads efficiently.
- High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage enables a very high limiting speed of 12,000 rpm.
- Optimized for Performance: The open seal type allows for optimal lubrication flow and heat dissipation, which is critical in high-speed operations. The bearing is pre-lubricated for immediate operation.
71926 ACD/HCP4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- High-Frequency Motors
- Aerospace Actuation Systems
