Measuring Instruments
Gear Runout Tester

402-004
Operating principle
Radial runout DFr of gear ring is the maximum variation of distance from the center gear to the gage head which contacts the gear tooth at middle tooth profile of standard gear rack, testing radial runout of gear ring is put into practice. Operating principle is shown as Fig. 1. When cheching fix the tested gear placed on the arbor between centers of the tester, inserting gagge head into space of both teeth in turn, then runout of the gage head relative to ratary axis of the gear is shown by the indicator.
For measuring radial or face runout of out engaging cylindric and tapered gears, worm and worm gear (Accuracy: ¡Üclass 6).

Main technical parameter
measuring gear module
Max. Diameter of gear
1-6 mm
150mm,300mm
Swivel range of measuring stand
Division Value of indicator
¡À90 ¡ã
0.001mm

The variation of indication value of the tester during measuring 10 times does not exceed the value shown in following table:
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Testing gear
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