71802 ACD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71802 ACD/P4DGA
Basic Information
System of measurement
Metric
Weight
0.014 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
790 lbf
Radial static load rating
630 lbf
Limiting speed
121 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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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71802 ACD/P4DGA Bearing Product Overview & Core Advantages
The 71802 ACD/P4DGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This universally matchable (SU) bearing features an extra light preload (Class A) and is supplied as a matched set of two bearings, enabling it to handle combined radial and axial loads simultaneously. Manufactured to a P4 tolerance class, it offers superior running accuracy, making it ideal for high-speed spindles and precision machinery where high rigidity and minimal runout are critical.
71802 ACD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71802 ACD/P4DGA is decoded as follows:
- 71802: Basic bearing series, indicating a light-weight, high-precision angular contact design with a 15mm bore.
- ACD: Angular Contact design with a 25° contact angle and Duplex arrangement (implying universal matchability for back-to-back or face-to-face mounting).
- P4: Denotes a high-precision tolerance class, ensuring extremely tight dimensional and running accuracy.
- DGA: Indicates the bearing is lubricated with a specific grease and is supplied from the factory as a universally matchable set.
71802 ACD/P4DGA Bearing Structural Features & Performance Benefits
This bearing's performance is derived from its optimized construction:
- High Rigidity & Load Capacity: The 25° contact angle and duplex (matched set) configuration provide high resistance to moment loads and enable the bearing to support significant combined loads.
- High-Speed Capability: The lightweight, resilient phenolic cage minimizes centrifugal forces and friction, contributing to a high limiting speed of 121,000 rpm. The optimized internal geometry further enhances high-speed performance.
- Precision & Accuracy: Manufactured to P4 tolerance class with tight bore, outside diameter, and width tolerances, this bearing ensures exceptional running accuracy and system stability.
- Ready-to-Install: The bearings are pre-lubricated and supplied as a universally matchable set, simplifying installation and ensuring optimal preload and performance right out of the box.
71802 ACD/P4DGA Bearing Typical Application Areas
The 71802 ACD/P4DGA is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Robotics
- Medical and Dental Handpiece Drives
- Aerospace Control Systems
