71800 ACD/P4DBB
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71800 ACD/P4DBB
Basic Information
System of measurement
Metric
Weight
0.01 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
19 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
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
655 lbf
Radial static load rating
418 lbf
Limiting speed
95 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
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71800 ACD/P4DBB Bearing Product Overview & Core Advantages
The 71800 ACD/P4DBB is a precision angular contact ball bearing designed for demanding applications requiring high rotational accuracy and rigidity. This duplex back-to-back (DB) matched set is preloaded to Light / Class B specifications, ensuring optimal performance under combined loads. Its compact design, with a 10 mm bore and 19 mm outside diameter, makes it ideal for space-constrained, high-precision machinery. Manufactured to P4 tolerance class, it guarantees exceptional running accuracy and is pre-lubricated for immediate use, offering a reliable solution for high-speed, high-rigidity applications.
71800 ACD/P4DBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71800 | Basic bearing series designation | Indicates the bearing's internal geometry and size series. |
| AC | Angular Contact | Designed to support combined radial and axial loads. |
| D | Duplex Back-to-Back (DB) Arrangement | Two bearings are mounted opposing each other, providing high moment rigidity. |
| P4 | Tolerance Class | Denotes high precision with tight dimensional and running accuracy tolerances. |
| DBB | Duplex Back-to-Back (Matched Set) | Specifies that the product is a factory-matched set of two bearings in the DB configuration, ensuring consistent performance. |
71800 ACD/P4DBB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and tilting. With a 25° contact angle and a phenolic cage, this bearing set is engineered to handle significant combined radial and axial loads.
- Precision & High-Speed Performance: Manufactured to P4 tolerance class with a phenolic resin cage, this bearing achieves excellent running accuracy and is suitable for high-speed operation up to 95,000 rpm. The lightweight cage reduces centrifugal forces, contributing to stable high-speed performance.
- Optimized Material & Lubrication: Constructed from chrome steel for both rings and balls, the bearing provides high durability and fatigue resistance. It is pre-lubricated, ensuring immediate operation and reliable performance within its specified temperature range of -30°C to 110°C.
71800 ACD/P4DBB Bearing Typical Application Areas
This precision bearing set is ideally suited for applications demanding high rigidity, speed, and accuracy, including:
- Machine Tool Spindles
- High-Frequency Spindles
- Precision Grinding Machines
- Robotic Drives and Actuators
- Medical and Dental Equipment
- Optical and Measuring Instruments
