71914 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71914 CD/P4ADGA
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
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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:
$ 332
/ each
In Stock
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71914 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71914 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under the P4A tolerance class, it guarantees extremely tight dimensional and running accuracy. Its universal matchable (SU) design allows two bearings to be paired in a back-to-back or face-to-face arrangement to optimize performance for combined loads. This bearing is pre-lubricated and features an extra light preload (Class A), making it ideal for high-speed spindles and other high-precision machinery where minimal deflection and superior running smoothness are critical.
71914 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71914 CD/P4ADGA provides detailed technical specifications through its suffixes:
- 71914: Basic model number denoting a metric, angular contact ball bearing with a 70mm bore, 100mm OD, and 32mm width.
- C: Indicates a 15° contact angle, optimized for high-speed applications requiring high rigidity.
- D: Signifies the internal design and optimized internal geometry.
- P4A: Denotes the tolerance class, specifying very high precision levels for both dimensional and running accuracy, superior to standard ABEC 7 (P4) specifications.
- DGA: Indicates the bearing is supplied as part of a universally matchable (SU) pair with an extra light preload (Class A).
71914 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is essential for applications like machine tool spindles. The 15° contact angle provides an excellent balance between radial and axial load capacity, contributing to system stability.
- Superior Load Capacity: With a dynamic load rating of 12,578 lbf and a static load rating of 15,300 lbf, it is engineered to handle significant combined loads (simultaneous radial and axial forces).
- Optimized High-Speed Performance: The phenolic resin cage offers low weight and excellent performance at high speeds, contributing to a limiting speed of 24,000 rpm. The standard lubrication allows for immediate operation within a wide temperature range of -30°C to 110°C.
- Universal Matching Capability (SU): The universal matchable (SU) feature allows for simplified mounting of two bearings in any preload configuration without the need for selective assembly, reducing complexity and inventory requirements.
71914 CD/P4ADGA Bearing Typical Application Areas
The 71914 CD/P4ADGA is ideally suited for high-performance applications, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes
- Medical and Dental Equipment
- Aerospace Instrumentation and other high-speed rotary systems
