Dynamic measurement of the torque-speed characteristics of dental high speed air turbine handpieces.

Brockhurst P.J. and Shams R. (1994) Dynamic measurement of the torque-speed characteristics of dental high speed air turbine handpieces.. Australian Dental Journal, 39 1: 33-38.

Author Brockhurst P.J.
Shams R.
Title Dynamic measurement of the torque-speed characteristics of dental high speed air turbine handpieces.
Journal name Australian Dental Journal   Check publisher's open access policy
ISSN 0045-0421
Publication date 1994-01-01
Sub-type Article (original research)
Open Access Status Not yet assessed
Volume 39
Issue 1
Start page 33
End page 38
Total pages 6
Subject 3500 Dentistry
Abstract The first requirement for adequate performance of an air turbine handpiece is sufficient power. Suppliers of such handpieces do not provide data on the power produced by their equipment. A method for determining the torque, speed and hence power during simulated operation is described. Forty-one new and used handpieces were tested. Maximum speeds up to 500,000 rpm, maximum torques up to 2.33 N.mm and maximum power up to 29.6 watt were observed. The maximum power was produced at between 49 and 79 per cent of the free-running speed. A relationship between maximum power and stall torque was noted. The maximum torque is at stall for ball-bearing units. The stall torque can be easily determined by a simple stall torque test which is described. Using this test, the performance of handpieces can be easily checked in the clinic. The one air-bearing handpiece tested performed in a manner similar to the others, except that stall occurred below 60,000 rpm.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 04 Oct 2016, 12:02:51 EST by System User