71926 ACDGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71926 ACDGB/P4A
Basic Information
System of measurement
Metric
Weight
1.55 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
180 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
15.875 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
19598 lbf
Radial static load rating
22950 lbf
Limiting speed
7.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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71926 ACDGB/P4A Bearing Product Overview & Core Advantages
The 71926 ACDGB/P4A is a single row angular contact ball bearing engineered for high-precision applications demanding exceptional rotational accuracy and rigidity. Operating under a P4A tolerance class, this metric bearing is designed to handle significant combined loads, primarily thrust loads in one direction, with a 25° contact angle optimizing performance. Its light preload (Class B) ensures minimal runout and stable operation right from installation, making it ideal for high-speed spindles and other precision machinery where reliability is paramount.
71926 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71926 | Basic bearing series and size designation. |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Universal Matchable (SU) bearing, designed to be mounted in sets (in this case, a set of 3) to achieve specific preload and stiffness characteristics. |
| P4A | Indicates a high-precision tolerance class with very tight dimensional and running accuracy tolerances. |
71926 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single row angular contact design, combined with a phenolic cage and P4A tolerance class, delivers high rigidity and exceptional running accuracy, which is critical for applications like machine tool spindles.
- Superior Load Capacity: With a 25° contact angle, this bearing is optimized to carry substantial combined radial and axial loads, particularly one-directional thrust loads.
- High-Speed Capability: The lightweight phenolic cage reduces centrifugal forces, enabling a high limiting speed of 7,500 rpm. The bearing is supplied lubricated for immediate operation.
- Universal Matching: The DGB (Universal Matchable) designation means these bearings are manufactured to be paired in sets (typically 2 or more) to create a preloaded assembly, enhancing system stiffness and accuracy without the need for custom adjustments.
71926 ACDGB/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for demanding applications including:
- Machine Tool Spindles (milling, grinding)
- High-Speed Machining Centers
- Precision Gearboxes
- Industrial Pumps and Compressors
