71910 ACE/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71910 ACE/HCP4ADGB
Basic Information
System of measurement
Metric
Weight
0.22 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
3668 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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
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71910 ACE/HCP4ADGB Bearing Product Overview & Core Advantages
The 71910 ACE/HCP4ADGB is a high-precision angular contact ball bearing engineered for superior performance in demanding applications. This universally matchable (SU) bearing is designed to handle combined loads with exceptional accuracy and reliability. Its key advantages include high-speed capability enabled by a phenolic cage and ceramic balls, light preload (Class B) for precise shaft positioning, and a P4A tolerance class ensuring ultra-precision operation. The open seal design allows for optimal lubrication management in controlled environments.
71910 ACE/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Performance Implication |
|---|---|---|
| ACE | 25° contact angle, optimized internal design | Enhanced axial load capacity and stiffness |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Higher speed capability, reduced weight, and electrical insulation |
| P4A | Super-precision tolerance class | Exceptional running accuracy and minimal vibration |
| DGB | Universal Matchable (SU designation) | Can be mounted in any combination (DB, DF, DT) without performance loss |
71910 ACE/HCP4ADGB Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: Silicon nitride balls combined with chrome steel rings provide higher limiting speed (46,000 rpm), reduced centrifugal forces, and superior performance in electrically sensitive environments.
- Phenolic Resin Cage: Offers excellent strength-to-weight ratio and smooth operation at high rotational speeds, contributing to the bearing's exceptional dynamic performance.
- 25° Contact Angle & Light Preload: Delivers optimal stiffness and accuracy for precision applications while minimizing friction and heat generation.
- Universal Matchability (SU): Enables flexible mounting arrangements (back-to-back, face-to-face, or tandem) using two bearings from the same manufacturing lot, ensuring consistent performance and simplified inventory.
- Super-Precision P4A Tolerance: Guarantees tight dimensional control with bore diameter tolerance of -0.004mm to 0 and outside diameter tolerance of -0.004mm to 0 for ultra-precise shaft positioning.
71910 ACE/HCP4ADGB Bearing Typical Application Areas
- High-Speed Machine Tool Spindles: CNC machining centers, grinding spindles
- Precision Medical Equipment: Dental handpieces, surgical tools
- Aerospace Systems: Gyroscopes, navigation instruments
- Semiconductor Manufacturing: Wafer handling robots, precision stages
- High-Frequency Motors: Servo motors, spindle motors
