71826 ACDGB/VQ253
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71826 ACDGB/VQ253
Basic Information
System of measurement
Metric
Weight
0.77 kg
Tolerance class
NSTD
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
165 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
35
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
8190 lbf
Radial static load rating
11250 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71826 ACDGB/VQ253 Bearing Product Overview & Core Advantages
The 71826 ACDGB/VQ253 is a precision angular contact ball bearing engineered for applications demanding high rigidity and accurate rotational performance. As a single bearing with a 25° contact angle and Light Preload (Class B), it is optimized to handle significant combined loads—simultaneously supporting radial forces and thrust loads in one direction. Its compact design, featuring an 18 mm width, makes it ideal for space-constrained, high-precision assemblies requiring exceptional reliability and smooth operation.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Duplex arrangement, Back-to-Back mounting. This configuration provides high rigidity and moment load capacity. |
| VQ253 | Specific vendor code for Light Preload (Class B) and potentially internal tolerances or selection grouping. |
71826 ACDGB/VQ253 Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The back-to-back duplex arrangement (DGB) creates a robust, preloaded system that delivers high rigidity, excellent stability, and the ability to withstand combined radial and axial loads.
- Precision Performance: Manufactured with a phenolic resin cage, this bearing is suitable for high-speed applications up to 11,000 rpm, offering reduced friction, lower heat generation, and quiet operation.
- Superior Material Construction: Components made from chrome steel for both rings and balls ensure high durability, wear resistance, and a long operational lifespan under demanding conditions.
- Optimized for Precision: The Light Preload (Class B) eliminates internal clearance, minimizing shaft runout and ensuring high positional accuracy, which is critical in precision machinery.
71826 ACDGB/VQ253 Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
