How to judge the quality of dental high-speed handpieces?
Some key points to judge quality of dental high-speed handpiece.
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How should a dentist judge the quality of a dental high-speed turbine?Based on the questions asked by many dentists, let’s share some key points below.
The main parameters for judging the quality of high-speed turbines
- Noise
- Vibration
- Torque
- Life span
Noise control
Should be below 65 dB.
The selection of good bearing
- Shanghai Tianhong- No.1 bearing in China
- German GRW bearing
- German Myonic bearing
The accuracy of spindle
- The run-out of the spindle≤0.02mm;
- The roundness of the spindle≤0.01mm;
- The structure of the spindle is tighter as it turns;
- The clamping force is greater than 22N.
The accuracy of impeller
- The inner diameter of the impeller is controlled at 3.165+0.02,
- The balance accuracy of the impeller is ≤0.0003g
The accuracy of the air intake
The air intake hole is drilled with electric spark to ensure accuracy, and the air intake is designed to be in the center of the impeller to ensure a large torque of the high-speed handpieces.
The assembly of high-speed handpiece
It is guaranteed in a 100,000-level clean bench to ensure the cleanliness of the environment of the dental high-speed handpieces.
