71826 ACD/P4TGC
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71826 ACD/P4TGC
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
Moderate / Class C
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 ACD/P4TGC Bearing Product Overview & Core Advantages
The 71826 ACD/P4TGC is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. As a P4 tolerance class bearing, it guarantees extremely tight dimensional and running accuracy. Its 25° contact angle and universal matchable (SU) design enable it to handle combined loads—significant radial and axial loads in both directions—when mounted in sets. The phenolic cage and optimized internal geometry contribute to its high-speed capability, making it an ideal solution for high-performance spindles and precision machinery.
71826 ACD/P4TGC Bearing Model Code Explained, Specifications & Naming Convention
The model number 71826 ACD/P4TGC provides detailed technical specifications through its suffixes:
- 71826: Basic series number denoting a metric, double-row angular contact ball bearing with specific dimensions (130mm bore, 165mm OD).
- ACD: 25° contact angle and a specific internal design optimized for high rigidity and universal matching.
- P4: Indicates an ultra-high-precision tolerance class superior to standard ABEC-7, ensuring minimal runout and vibration.
- TGC: Designates the cage material as phenolic resin, which is lightweight and provides excellent performance at high speeds with reduced friction.
71826 ACD/P4TGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double-row design and 25° contact angle provide superior rigidity, enabling the bearing to support substantial combined radial and axial loads from any direction, especially when used in preloaded universal arrangements.
- High-Speed Performance: The lightweight phenolic cage (TGC) minimizes centrifugal forces and ensures stable operation at the specified limiting speed of 11,000 rpm. The open design facilitates efficient lubrication management.
- Ultra-Precision: Manufactured to P4 tolerance class, this bearing guarantees exceptional running accuracy, low noise, and minimal heat generation, which is critical for the stability of precision systems.
- Universal Matchability (SU): Bearings marked SU can be mounted in various preloaded configurations (back-to-back, face-to-face, or tandem) without selective matching, simplifying installation and providing design flexibility.
71826 ACD/P4TGC Bearing Typical Application Areas
This bearing is specifically designed for high-end industrial applications where precision, speed, and reliability are paramount. Key sectors include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines, high-frequency motor spindles.
- Industrial Pumps & Compressors requiring high-speed and reliable operation.
- Robotics: High-accuracy joints and rotary axes.
