71802 ACD/P4DBB
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71802 ACD/P4DBB
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
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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71802 ACD/P4DBB Bearing Product Overview & Core Advantages
The 71802 ACD/P4DBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement is preloaded to Light / Class B specifications, ensuring high system stiffness and minimal axial/radial runout. Its fundamental advantage lies in its ability to handle combined loads—simultaneous radial and axial forces—making it an ideal choice for high-precision, high-reliability spindles and positioning systems where stability is paramount.
71802 ACD/P4DBB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| AC | Angular Contact Design | Optimized for combined loads with a 25° contact angle. |
| D | Duplex / Matched Set | Two bearings are precision-matched as a set for immediate installation. |
| P4 | High Precision Tolerance Class | Guarantees extremely tight dimensional and running accuracy for high-speed applications. |
| DBB | Back-to-Back Arrangement | Provides high moment rigidity and can accommodate axial loads in both directions. |
71802 ACD/P4DBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a rigid bearing system that effectively resists moment loads and shaft deflection, crucial for maintaining precision under operational stresses.
- Superior Load Capacity: The angular contact design with a 25° contact angle is engineered to support significant combined radial and axial loads simultaneously.
- Optimized for High Speeds: The lightweight phenolic resin cage minimizes centrifugal forces and friction, contributing to the high limiting speed of 121,000 rpm. The P4 precision class ensures smooth, low-vibration operation at these extremes.
- Precision Engineering: Manufactured to P4 tolerance standards with extremely tight bore, outside diameter, and width tolerances, guaranteeing consistent, high-accuracy performance in the most demanding applications.
71802 ACD/P4DBB Bearing Typical Application Areas
This bearing is specifically engineered for high-performance machinery where precision, speed, and rigidity are non-negotiable. Key applications include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Advanced Medical & Dental Equipment
- Aerospace Actuation & Control Systems
