71807 CD/P4DBB
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71807 CD/P4DBB
Basic Information
System of measurement
Metric
Weight
0.056 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1712 lbf
Radial static load rating
1946 lbf
Limiting speed
56 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
Price:
$ 146.87
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71807 CD/P4DBB Bearing Product Overview & Core Advantages
The 71807 CD/P4DBB is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement provides superior stability and can accommodate combined radial and axial loads simultaneously. Manufactured to P4 tolerance class, it ensures minimal runout and high positional accuracy, making it ideal for high-speed spindles and precision machinery where high rigidity and reliability are paramount.
71807 CD/P4DBB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| 71807 | Basic bearing series and size designation (35mm bore, 47mm OD). |
| C | 15° contact angle, optimized for high-speed applications with significant axial loads. |
| D | Indicates the bearing is part of a duplex pair. |
| P4 | High precision tolerance class, ensuring extremely tight dimensional and running accuracy. |
| DB | Duplex Back-to-Back mounting arrangement, providing high moment rigidity. |
71807 CD/P4DBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, crucial for maintaining precision under heavy combined loads.
- Optimized Load Capacity: The 15° contact angle and duplex design enable the bearing to handle significant radial and axial loads from both directions simultaneously.
- High-Speed Capability: The lightweight phenolic cage reduces centrifugal forces, while the precision-ground chrome steel components and P4 tolerances contribute to smooth operation at the specified limiting speed of 56,000 rpm.
- Precision Performance: Manufactured to P4 tolerance class with a light preload (Class B), this bearing set delivers exceptionally low noise, minimal vibration, and high running accuracy for demanding applications.
71807 CD/P4DBB Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-Frequency Motors
- Medical & Dental Handpieces
- Aerospace Instrumentation
