71810 ACD/P4DBB
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71810 ACD/P4DBB
Basic Information
System of measurement
Metric
Weight
0.1 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
65 mm
Outside diameter tolerance
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
30
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2520 lbf
Radial static load rating
3375 lbf
Limiting speed
41 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.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71810 ACD/P4DBB Bearing Product Overview & Core Advantages
The 71810 ACD/P4DBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched pair in a back-to-back (DB) arrangement is preloaded to deliver superior stiffness and stability under combined loads (radial and axial). Manufactured to P4 tolerance class, it ensures minimal runout and high positional accuracy, making it ideal for high-speed spindles and other precision machinery where reliability is paramount.
71810 ACD/P4DBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71810 | Basic bearing designation, indicating a metric, extra-light series angular contact ball bearing. |
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| D | Indicates the bearing is part of a duplex pair (two bearings). |
| P4 | High precision tolerance class, ensuring extremely tight dimensional and running accuracy. |
| DBB | Duplex Back-to-Back mounting arrangement. This configuration provides high moment rigidity. |
71810 ACD/P4DBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement and light preload (Class B) create a highly rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise shaft positioning.
- Superior Load Capacity: The 25° contact angle enables the bearing to handle significant combined radial and axial loads simultaneously, with a dynamic load rating of 2520 lbf and a static load rating of 3375 lbf.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the open design and factory-applied lubrication allow for efficient operation at high speeds, with a limiting speed of 41,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class with tight dimensional controls on the bore diameter (50 mm), outside diameter (65 mm), and width (14 mm), guaranteeing consistent, high-performance operation.
71810 ACD/P4DBB Bearing Typical Application Areas
The 71810 ACD/P4DBB is engineered for high-performance applications where precision and speed are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Rotary Systems: Industrial robots, indexing tables, and rotary actuators.
- High-Frequency Motors & Spindles: PCB drilling spindles and dental handpieces.
- Medical and Laboratory Equipment: Centrifuges and high-speed scanners.
