71914 CD/P4ADBAGMM1
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71914 CD/P4ADBAGMM1
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
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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71914 CD/P4ADBAGMM1 Bearing Product Overview & Core Advantages
The 71914 CD/P4ADBAGMM1 is a super-precision angular contact ball bearing designed for the most demanding applications. This duplex back-to-back (DB) matched set delivers exceptional rotational accuracy, high system rigidity, and superior performance under combined loads. Manufactured to P4A tolerance class, it ensures minimal runout and is preloaded for immediate, precise operation. Its compact design and high load capacity make it ideal for high-speed, high-rigidity spindles.
71914 CD/P4ADBAGMM1 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71914 CD/P4ADBAGMM1 provides a complete technical specification:
- 71914: Basic series designation for a super-precision angular contact ball bearing.
- C: 15° contact angle, optimized for high-speed applications requiring high rigidity.
- D: Indicates the bearing is part of a duplex (paired) set.
- P4A: The tolerance class, denoting extremely tight dimensional and running accuracy (superior to ABEC 7).
- DB: Duplex Back-to-Back arrangement, providing high moment stiffness and excellent stability.
- A: Extra light preload, minimizing friction and heat generation for very high speeds.
- GMM: Designates the cage material as Phenolic, offering high strength and excellent performance at high speeds.
- 1: Identifies a specific internal design variant.
71914 CD/P4ADBAGMM1 Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring exceptional machining accuracy.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads simultaneously, a key requirement for spindle applications.
- High-Speed Performance: The combination of a 15° contact angle, extra light preload (A), and a lightweight, robust phenolic cage (GMM) enables very high limiting speeds (24,000 rpm) with low heat generation.
- Precision Operation: Manufactured to P4A tolerance class with extremely tight bore, outside diameter, and width tolerances, guaranteeing smooth, quiet, and vibration-free running essential for ultra-precision machinery.
71914 CD/P4ADBAGMM1 Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed CNC milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Spindles: Used in PCB drilling and routing.
- Robotics: High-accuracy joints and rotary actuators.
