the tester is designed to inspect the total radial composite deviation Fi'', tooth-to-tooth radial composite deviation fi'',runout Fr'' and tooth span M over pins on cylindrical gear. the cutting burr and  scratch can automatically be identified and picked out.

Rolling gear tester model 3100C
Distance between centers 40-175mm
Max outer diameter of gear shaft: 150mm
Length of gear shaft: 50-170mm
Measured value resolution: 0.0005mm
Max indication error: 0.005mm
Application range: cylindrical gears with hole or with extended shaft