71914 ACE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71914 ACE/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.55 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
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7605 lbf
Radial static load rating
6862 lbf
Limiting speed
29 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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.
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71914 ACE/HCP4ADT Bearing Product Overview & Core Advantages
The 71914 ACE/HCP4ADT is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. As a duplex tandem (DT) arrangement bearing set, it is preloaded and matched to deliver superior axial rigidity and handle significant thrust loads in one direction. Manufactured to the exacting P4A tolerance class, it guarantees ultra-precise rotational accuracy. Its use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life, making it an ideal solution for high-speed, high-rigidity spindle systems.
71914 ACE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
The model number 71914 ACE/HCP4ADT is decoded as follows:
- 71914: Basic bearing series, indicating a light-weight, high-precision angular contact design with a 70mm bore, 100mm OD, and 32mm width.
- ACE: Specific internal design and contact angle (25°).
- HCP4A:
- HC: Denotes the use of Hybrid Ceramic balls (steel rings with ceramic balls).
- P4A: Specifies a super-precision tolerance class tighter than ABEC 7, ensuring minimal runout and vibration.
- DT: Indicates the bearing is part of a Duplex Tandem preloaded pair. Two identical bearings are mounted in tandem to increase axial load capacity and rigidity in one direction.
71914 ACE/HCP4ADT Bearing Structural Features & Performance Benefits
- Superior Rigidity and Load Capacity: The duplex tandem (DT) arrangement combines two bearings to create a highly rigid unit capable of supporting very high axial loads in one direction. The 25° contact angle is optimized for thrust load performance.
- Enhanced High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage significantly reduces rotating mass and friction, enabling a high limiting speed of 29,000 rpm.
- High Precision Operation: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing ensures minimal runout for exceptional rotational accuracy in precision machinery.
- Pre-Lubricated for Immediate Use: The bearing comes lubricated from the factory, ready for installation and initial operation within its specified temperature range of -30°C to 110°C.
71914 ACE/HCP4ADT Bearing Typical Application Areas
This bearing is engineered for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- High-Frequency Spindles: PCB drilling and routing machines.
- Medical Equipment: Dental handpieces and surgical drill spindles.
- Aerospace Systems: Gyroscopes and other precision instrumentation.
