71914 ACBGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71914 ACBGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.33 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
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
32
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2925 lbf
Radial static load rating
2655 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Ceramic
Cage material
Phenolic
Technical Drawings
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71914 ACBGA/HCP4A Bearing Product Overview & Core Advantages
The 71914 ACBGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with a 25° contact angle and an Extra Light (Class A) preload, this bearing delivers superior rotational accuracy and high rigidity. Its ceramic ball construction and P4A tolerance class make it ideal for high-speed operation, while its universal matchable (SU) designation allows for precise bearing arrangement in pairs to handle combined loads effectively. This bearing is pre-lubricated for immediate use and operates within a wide temperature range.
71914 ACBGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing series and size designation (70mm bore, 100mm OD, 16mm width). |
| AC | Angular Contact geometry, optimized for combined radial and axial loads. |
| B | 40° contact angle (superseded by the specified 25° in this specific bearing's construction). |
| GA | Indicates a specific internal clearance and preload group (Extra Light / Class A preload). |
| HC | Refers to the Hybrid Ceramic construction (Ceramic balls with steel rings). |
| P4A | The tolerance class, denoting very high precision levels for running accuracy. |
71914 ACBGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls significantly reduces weight and centrifugal forces, enabling higher limiting speeds (28,000 rpm). This construction also provides superior resistance to wear and operates effectively with less lubrication.
- High Rigidity & Precision: The angular contact design and Class A preload ensure minimal axial and radial deflection under load, providing exceptional stiffness and rotational accuracy for precise positioning applications.
- Optimized Cage & Lubrication: The phenolic cage offers high strength with low weight, contributing to smooth high-speed operation. The bearing is pre-lubricated, ensuring immediate performance and reducing initial setup complexity.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads simultaneously, making it suitable for complex loading conditions.
71914 ACBGA/HCP4A Bearing Typical Application Areas
This high-performance bearing is ideally suited for:
- Machine Tool Spindles: Where high speed, precision, and rigidity are paramount.
- High-Speed Motors and Spindles: Particularly in CNC machining centers and grinding applications.
- Precision Instrumentation: Used in equipment requiring minimal runout and high rotational accuracy.
- Aerospace & Defense Systems: For gyroscopes, navigation systems, and other critical high-speed components.
- Semiconductor Manufacturing Equipment: In wafer handling and precision stages.
