71940 ACD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71940 ACD/P4ADGA
Basic Information
System of measurement
Metric
Weight
12.2 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
200 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
280 mm
Outside diameter tolerance
-0.004mm to 0
Width
76 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
25.4 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
73125 lbf
Radial static load rating
112500 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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:
$ 2781.2
/ each
In Stock
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Product Overview and Core Advantages
The 71940 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As part of the universal matchable (SU) series, it can be mounted in pairs to create a pre-loaded set, offering superior high rigidity and the ability to withstand combined loads (radial and axial loads simultaneously). Manufactured to the stringent P4A tolerance class, this bearing ensures minimal runout and smooth operation, making it ideal for high-precision, high-speed machinery.
71940 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle, optimized for carrying significant axial loads. |
| P4A | Indicates a high-precision tolerance class with enhanced dimensional and running accuracy, suitable for applications requiring extreme precision. |
| DGA | Specifies the universal matchable (SU) arrangement and extra light preload (Class A), allowing two bearings to be paired for optimal stiffness without additional adjustment. |
Structural Features and Performance Benefits
- High Rigidity and Load Capacity: The double row angular contact design and universal matching capability enable the bearing to handle substantial combined radial and axial loads with high system rigidity.
- Precision Performance: Manufactured to P4A tolerance class with a 25° contact angle, this bearing provides exceptional running accuracy and is ideal for high-speed applications up to 16,250 rpm.
- Optimized Cage Design: The phenolic cage offers excellent strength-to-weight ratio and low friction, contributing to smooth operation at high speeds and reduced wear.
- Superior Material: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long service life under demanding conditions.
- Pre-lubricated: Comes lubricated for immediate use, suitable for a temperature range of -30°C to 110°C.
71940 ACD/P4ADGA Bearing Typical Application Areas
This precision angular contact ball bearing is engineered for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arms and Precision Positioning Systems
