71914 CD/P4ADFC
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71914 CD/P4ADFC
Basic Information
System of measurement
Metric
Weight
0.66 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12578 lbf
Radial static load rating
15300 lbf
Limiting speed
24 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
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In Stock
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71914 CD/P4ADFC Bearing Product Overview & Core Advantages
The 71914 CD/P4ADFC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex face-to-face (DF) arrangement provides superior stability and is preloaded to Moderate / Class C specifications, ensuring minimal axial and radial play under operating conditions. Its primary advantage lies in its ability to handle combined loads efficiently, making it an ideal choice for high-precision spindles and machinery where high rigidity and accurate shaft guidance are paramount.
71914 CD/P4ADFC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing designation (70mm bore, 100mm OD, 32mm width). |
| C | 15° contact angle, optimized for high-speed performance and moderate axial load capacity. |
| D | Indicates a duplex face-to-face (DF) preloaded pair. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards for enhanced running accuracy. |
| DFC | Specifies the matched arrangement (Duplex Face-to-Face) and preload class (C). |
71914 CD/P4ADFC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex face-to-face (DF) arrangement of two bearings creates a rigid support system that effectively counteracts moment loads and maintains precise shaft positioning, crucial for high-precision machining.
- Superior Load Capacity: With a 15° contact angle and a dynamic load rating of 12,578 lbf, this bearing is engineered to handle significant combined radial and axial loads simultaneously.
- Optimized High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and smoother operation at the limiting speed of 24,000 rpm. The open design allows for efficient lubrication management.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on bore, outside diameter, and width, ensuring consistent performance and ease of integration into precision assemblies.
- Durable Material Construction: Components made from chrome steel provide high hardness, wear resistance, and long service life under demanding operating conditions.
71914 CD/P4ADFC Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Tables: Indexing and positioning systems.
- High-Frequency Motors & Spindles: Where minimal runout and high rigidity are required.
- Medical Equipment: High-speed dental handpieces and imaging devices.
- Aerospace Actuation Systems: Precision control mechanisms.
