71817 ACDGB/VQ253
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71817 ACDGB/VQ253
Basic Information
System of measurement
Metric
Weight
0.27 kg
Tolerance class
NSTD
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
30
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4568 lbf
Radial static load rating
5400 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
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
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71817 ACDGB/VQ253 Bearing Product Overview & Core Advantages
The 71817 ACDGB/VQ253 is a precision angular contact ball bearing engineered for applications demanding high rigidity and exceptional performance under combined loads. Featuring a 25° contact angle and a light preload (Class B), this bearing is optimized to handle significant axial loads in one direction while supporting substantial radial loads. Its compact design, with a 13 mm width, makes it ideal for space-constrained, high-precision assemblies requiring reliable operation and long service life.
71817 ACDGB/VQ253 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71817 | Basic bearing series and size designation (85mm bore, 110mm OD). |
| AC | Angular Contact design, optimized for combined loads. |
| DGB | Specific internal design and contact angle of 25°. |
| VQ253 | Indicates a matched set of two bearings supplied with specific preload and selective assembly for optimal performance. |
71817 ACDGB/VQ253 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 25° contact angle provides superior stiffness and enables the bearing to efficiently support combined radial and axial loads.
- Precision & Speed: Manufactured to standard precision class (NSTD) with a phenolic cage, this bearing is capable of high-speed operation up to 28,000 rpm. The lightweight cage contributes to lower centrifugal forces and reduced friction.
- Optimized Internal Geometry: The bearing incorporates 30 precision balls of 7.144 mm diameter, ensuring smooth rotation and consistent load distribution.
- Matched Set Performance: Supplied as a universal matching bearing set of two, these bearings are selectively paired to provide defined light preload, eliminating internal clearance and enhancing system rigidity and positional accuracy.
71817 ACDGB/VQ253 Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision, speed, and rigidity are critical. Common uses include:
- Machine Tool Spindles
- High-Speed Precision Drives
- Pumps and Compressors
- Robotic Arm Joints and Gearboxes
