71914 CD/P4ADBD
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71914 CD/P4ADBD
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 Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Heavy / Class D
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/P4ADBD Bearing Product Overview & Core Advantages
The 71914 CD/P4ADBD is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex back-to-back (DB) arrangement features a Heavy preload (Class D), delivering superior stiffness and rotational accuracy under combined loads (radial and axial). Manufactured to P4A tolerance class, it is ideal for high-precision, high-rigidity systems where minimal deflection is critical.
71914 CD/P4ADBD Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| C | 15° Contact Angle |
| D | Heavy Preload (Class D) |
| P4A | High Precision Tolerance Class (superior to ABEC 7) |
| DB | Duplex Back-to-Back Matched Arrangement |
71914 CD/P4ADBD Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) configuration and heavy preload create a highly rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise positioning.
- Superior Load Capacity: The 15° contact angle and optimized internal geometry enable the bearing to handle significant combined radial and axial loads simultaneously.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter (70 mm) and outside diameter (100 mm), this bearing guarantees smooth, low-vibration operation.
- High-Speed Capability: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 24,000 rpm, making it suitable for high-speed applications.
- Durable Construction: Components made from chrome steel (rings and balls) provide excellent wear resistance and long service life under demanding conditions.
71914 CD/P4ADBD Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision and rigidity are paramount. Key applications include:
- Machine Tool Spindles (milling, grinding, turning)
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
