71917 CD/P4ADFC
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71917 CD/P4ADFC
Basic Information
System of measurement
Metric
Weight
1.06 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
25
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
17122 lbf
Radial static load rating
21712 lbf
Limiting speed
17 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Face-to-Face (DF)
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
71917 CD/P4ADFC Bearing Product Overview & Core Advantages
The 71917 CD/P4ADFC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This duplex face-to-face (DF) arrangement bearing set is preloaded to Moderate / Class C specifications, ensuring optimal stiffness and minimal axial/radial play under operating conditions. Its primary advantage lies in its ability to handle combined loads efficiently, making it ideal for high-precision spindles and other critical machinery components requiring superior running accuracy and high rigidity.
71917 CD/P4ADFC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71917 | Basic bearing designation indicating a metric, angular contact ball bearing with an 85 mm bore, 120 mm OD, and 36 mm width. |
| CD | Indicates a duplex face-to-face (DF) arrangement. This configuration provides high rigidity and is effective for handling combined loads and moment loads. |
| P4A | Specifies the tolerance class P4A, denoting very high precision for both bore and outside diameter tolerances, suitable for ultra-precise applications. |
| DFC | Indicates that the bearings are supplied as a matched set (2 bearings) with a specific preload (Moderate / Class C). |
71917 CD/P4ADFC Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The duplex face-to-face (DF) arrangement and Moderate (Class C) preload provide exceptional system stiffness, minimizing deflection under load and ensuring precise shaft positioning.
- Superior Load Capacity: With a 15° contact angle, this bearing is engineered to handle significant combined radial and axial loads simultaneously.
- Precision Performance: The P4A tolerance class guarantees tight dimensional control for superior running accuracy. The phenolic resin cage contributes to smooth operation at the specified limiting speed of 17,000 rpm.
- Optimized Material & Lubrication: Constructed from chrome steel for both rings and balls, ensuring high durability and fatigue resistance. The bearing is pre-lubricated for immediate operation within its designated temperature range.
71917 CD/P4ADFC Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-frequency Motor Spindles
- Other industrial machinery requiring high rigidity and exceptional rotational accuracy
