71826 ACD/P4TGB
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71826 ACD/P4TGB
Basic Information
System of measurement
Metric
Weight
2.31 kg
Tolerance class
P4
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
54 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
17842 lbf
Radial static load rating
33750 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
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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71826 ACD/P4TGB Bearing Product Overview & Core Advantages
The 71826 ACD/P4TGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This universally matchable (SU) bearing is manufactured to P4 tolerance class, ensuring minimal runout and superior performance. Its key advantage lies in its ability to accommodate combined loads (radial and axial) simultaneously, making it ideal for high-speed spindles and precision machinery. The light preload (Class B) minimizes deflection under operational forces, enhancing system stability and lifespan.
71826 ACD/P4TGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71826 | Basic bearing designation indicating the series and dimensions (130mm bore, 165mm OD, 54mm width). |
| AC | Angular Contact design with a 25° contact angle, optimized for high axial load capacity. |
| D | Signifies a high ball count and optimized internal geometry for increased load rating. |
| P4 | Indicates a super precision tolerance class for applications requiring extreme running accuracy. |
| TGB | Specifies the material and type of the cage: a phenolic (synthetic resin) cage, which is lightweight and suitable for high-speed operation. |
71826 ACD/P4TGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 25° contact angle and high ball complement (35 balls) provides excellent resistance to both radial and axial loads. The universal matchable (SU) feature allows for flexible mounting arrangements (DB, DF, DT) to optimize stiffness and load distribution in multi-bearing setups.
- Superior High-Speed Performance: The lightweight phenolic cage (TGB) reduces centrifugal forces, while the precision-ground chrome steel components ensure smooth operation. This combination enables a high limiting speed of 11,000 rpm.
- Exceptional Precision: Manufactured to P4 tolerance class with tight dimensional control on the bore, outside diameter, and width. This guarantees minimal vibration and superior positional accuracy in the final application.
- Optimized for Preload: The bearing is supplied with a light preload (Class B), which eliminates internal clearance and increases system rigidity without generating excessive heat, making it ready for installation in precision spindle assemblies.
71826 ACD/P4TGB Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision, speed, and rigidity are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motors and High-Speed Drives.
- Industrial Pumps and Compressors requiring high rotational accuracy.
- Robotic Arm Joints and Precision Positioning Systems.
