71914 ACE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71914 ACE/HCP4AQBCA
Basic Information
System of measurement
Metric
Weight
1.09 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
64 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12442 lbf
Radial static load rating
13725 lbf
Limiting speed
31 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71914 ACE/HCP4AQBCA Bearing Product Overview & Core Advantages
The 71914 ACE/HCP4AQBCA is a high-precision quadruplex angular contact ball bearing designed for the most demanding applications. Engineered as a matched set of four bearings in a Back-to-Back (QBC) arrangement, it delivers exceptional system rigidity and rotational accuracy. Its core advantages include the ability to handle combined loads (radial and axial) simultaneously, superior high-speed performance enabled by a phenolic cage and ceramic balls, and outstanding operational reliability due to its P4A tolerance class and pre-lubrication. This configuration is ideal for machine tool spindles and other high-precision machinery requiring maximum stiffness and minimal runout.
71914 ACE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing series and size designation (70mm bore, 100mm OD). |
| ACE | Indicates a 25° contact angle and specific internal design optimized for high stiffness. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), which reduce centrifugal forces, lower operating temperature, and enable higher speeds. |
| P4A | Denotes a super-precision tolerance class, with extremely tight limits on bore, OD, and width dimensions for superior running accuracy. |
| QBC | Specifies a Quadruplex Back-to-Back matched arrangement. This configuration provides maximum moment stiffness and is pre-set for immediate installation. |
71914 ACE/HCP4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement of four pre-loaded bearings creates an extremely rigid bearing system capable of withstanding heavy combined radial and axial loads and resisting tilting moments, making it ideal for high-precision machining applications.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic (Si3N4) balls significantly reduces centrifugal forces and friction. This allows the bearing to achieve a high limiting speed of 31,000 rpm with minimal heat generation.
- High Precision and Long Service Life: Manufactured to P4A super-precision tolerances, this bearing ensures minimal vibration and precise rotational accuracy. The hybrid ceramic construction also offers increased resistance to wear and a longer operational lifespan compared to all-steel equivalents.
- Optimized for Immediate Use: The bearing set is supplied pre-lubricated and with an Extra Light (Class A) preload, ensuring optimal performance and simplified installation without the need for initial adjustment.
71914 ACE/HCP4AQBCA Bearing Typical Application Areas
This precision bearing is specifically engineered for high-performance machinery where utmost accuracy, rigidity, and speed are critical. Key application areas include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling spindles.
- High-Frequency Motors and Spindles: Used in applications requiring very high rotational speeds.
- Precision Robotic Drives: In critical joints and axes of industrial robots.
- Aerospace and Defense Systems: For gyroscopes, radar systems, and other precision instrumentation.
