71926 ACD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71926 ACD/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
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
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:
$ 1752.71
/ each
In Stock
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71926 ACD/P4A Bearing Product Overview & Core Advantages
The 71926 ACD/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing, it is optimized to support high combined loads, handling significant radial loads and thrust loads in one direction simultaneously. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and other precision machinery. The bearing is supplied pre-lubricated and is available with a preload for enhanced system stiffness and immediate operational readiness.
71926 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71926 | Basic bearing series and size designation (130mm bore, 180mm OD). |
| ACD | Angular Contact design with a 25° contact angle. |
| P4A | Denotes a P4 (ABEC-7) tolerance class and specific internal clearance/geometry for high-precision applications. |
71926 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance standards, this bearing provides extremely precise shaft guidance and minimizes runout, which is critical for high-speed and high-accuracy applications.
- Optimized Load Capacity: The 25° contact angle is engineered to efficiently support combined loads, offering an excellent balance between radial and axial load-carrying capabilities.
- High-Speed Capability: The lightweight and robust phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 10,000 rpm.
- Durability and Reliability: Constructed from chrome steel for both rings and balls, the bearing offers high fatigue life and wear resistance. The open design allows for customized lubrication schemes to suit specific operational environments.
71926 ACD/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for demanding applications where high speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in high-performance automotive and industrial robotics.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical Equipment: Centrifuges and high-speed dental handpieces.
- Aerospace Actuation Systems: Control surface actuators and auxiliary power units.
