71914 CD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71914 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.33 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.008mm to 0
Width
16 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° to 110 °C
Radial dynamic load rating
7762 lbf
Radial static load rating
7650 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
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:
$ 708.01
/ each
In Stock
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71914 CD/P4A Bearing Product Overview & Core Advantages
The 71914 CD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 (ABEC-7) tolerance class, this bearing is designed to accommodate primarily axial loads in one direction and combined loads. Its compact design, featuring a 70 mm bore and 16 mm width, makes it ideal for space-constrained, high-speed machinery where precision and reliability are paramount.
71914 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing series and size designation (70mm bore, 100mm OD). |
| C | Designates a 15° contact angle, optimized for high-speed operation and axial load capacity. |
| D | Indicates the bearing is supplied with a specific preload for enhanced rigidity and precise shaft positioning. |
| P4 | Specifies the tolerance class (equivalent to ABEC-7), ensuring ultra-precise running accuracy. |
| A | Denotes that the bearing's internal geometry and tolerances are optimized for a matched arrangement when mounted with a second, identical bearing. |
71914 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle and factory-applied preload provides superior stiffness, minimizing deflection under load and ensuring exceptional running accuracy for precision spindles.
- Optimized Load Capacity: Engineered to handle high axial loads in one direction and combined (radial and axial) loads, with a dynamic load rating of 7762 lbf and a static load rating of 7650 lbf.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and 15° contact angle contribute to a high limiting speed of 20,000 rpm.
- Premium Materials: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance within a temperature range of -30°C to 110°C.
71914 CD/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for demanding applications where high speed, rigidity, and accuracy are critical. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical Equipment: High-speed centrifuges and dental handpieces.
