71910 ACD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71910 ACD/P4ADGB
Basic Information
System of measurement
Metric
Weight
0.26 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
25
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4680 lbf
Radial static load rating
4410 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
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
Price:
$ 215.75
/ each
In Stock
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71910 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 71910 ACD/P4ADGB is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a universally matchable (SU) bearing supplied in a set of two, it is engineered to accommodate combined radial and axial loads simultaneously. Its P4A tolerance class and light preload (Class B) ensure exceptional running accuracy and rotational stability, making it an ideal choice for high-performance spindles and precision machinery where uncompromising reliability is required.
71910 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | 25° contact angle, optimized for high axial load capacity and high-speed performance. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards, ensuring minimal runout and vibration. |
| DGB | Universal Matchable (SU) arrangement. Two bearings are supplied as a pre-matched set for simplified mounting and optimal performance. |
71910 ACD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and precision-ground raceways provide high rigidity, enabling the bearing to handle significant combined loads.
- Super-Precision & High-Speed Performance: Manufactured to P4A tolerance and featuring a lightweight phenolic cage, this bearing achieves a high limiting speed of 46,000 rpm with minimal centrifugal forces and heat generation.
- Universal Matchability (SU): The DGB suffix indicates the bearings are universally matchable. This allows for flexible mounting configurations (DB, DF, DT) using a single bearing type, simplifying inventory and assembly.
- Optimized Material Selection: Constructed from high-grade chrome steel for rings and balls, ensuring long service life and durability under high-stress conditions.
71910 ACD/P4ADGB Bearing Typical Application Areas
This bearing is specifically engineered for high-precision, high-speed machinery, including:
- Machine Tool Spindles (CNC machining centers, grinding spindles)
- High-Frequency Motors
- Precision Grinding Equipment
- Aerospace & Defense Systems
- Medical & Dental Equipment Spindles
