71800 CD/P4DBC
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71800 CD/P4DBC
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
15 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
691 lbf
Radial static load rating
441 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
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
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
71800 CD/P4DBC Bearing Product Overview & Core Advantages
The 71800 CD/P4DBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched pair bearing set features a back-to-back (DB) arrangement, providing superior stability and the ability to withstand combined loads (radial and axial). Manufactured to P4 tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed, high-precision machinery where reliability is paramount.
71800 CD/P4DBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71800 | Basic bearing series, indicating a metric, ultra-miniature angular contact design. |
| C | Specifies a 15° contact angle, optimized for handling significant axial loads. |
| D | Indicates the bearing is part of a duplex pair. |
| P4 | Denotes a high-precision tolerance class for exceptional running accuracy. |
| DB | Specifies the Back-to-Back mounting arrangement, which provides high moment rigidity. |
| C (Preload) | Indicates a moderate preload for reduced deflection and enhanced system stiffness. |
71800 CD/P4DBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread between load centers, significantly increasing the bearing set's resistance to moment loads and improving overall system stiffness.
- Superior Load Capacity: With a 15° contact angle and a matched pair design, this bearing set is engineered to handle substantial combined radial and axial loads simultaneously.
- Precision High-Speed Performance: The P4 tolerance class ensures minimal vibration, while the phenolic cage offers low weight and excellent high-speed capability, contributing to a limiting speed of 95,000 rpm.
- Optimized for Precision: The tight dimensional tolerances on the bore diameter, outside diameter, and width guarantee precise fit and predictable performance in demanding applications.
71800 CD/P4DBC Bearing Typical Application Areas
This precision duplex bearing is ideally suited for:
- High-Speed Spindles in CNC machining centers and PCB drilling machines
- Precision Instrumentation and optical scanning systems
- High-Frequency Motors and turbo-molecular pumps
- Medical Device Drives and dental handpieces
- Aerospace Actuators and guidance systems
