Gear Roll Tester

Double Flank gear rolling test is generally included in final acceptance test. A gear tested on Double Flank Gear Tester is normally the indication of good running properties of the gear and is adequate assurance about the quality of gear.

The readings taken are the validation of center distance between two gears to be inspected or between one gear and one master gear meshing without backlash during one complete rotation of gear.

Technical Specifications

Adjustable center distance 50 – 248 mm
Adjustable center distance with Power Drive 70 – 248 mm
Adjustable measuring preasure 0.02 – 2 Kp
Max. weight on Floating slide 20 Kg
Max. weight on Fixed slide 40 Kg
Throat Depth 136 mm
Max. Distance between centers 500 mm
Max. Distance between centers Motorized M/c 290 mm
Reading by Dial 10 micron least count
Optional Dial with Power Drive 1 Micron least count
Overall without steady 240W 680L 220H
Overall with steady (500 between center) 240W 680L 1000H

The Double Flank Test can indicate the following error in the gear

  • Effective tooth thickness of the gear with respect to center of rotation of the gear.
  • Backlash minimum and maximum.
  • Run out or eccentricity.
  • Profile error if there is kick from tooth to tooth rotation.
  • Pitch error if there are irregular readings.

Advantage of Double Flank Tester over other method of tooth thickness.

The measurement is combined with inspection of composite error and radial run out on the Double Flank Composite Tester during test.

The tooth thickness then appears in its fully effective form on rotation to the axis, the form that is decisive for the meshing condition in the gearbox. This method check the meshing of the gear as this would be assembled; error recorded on the indicator show the compatibility of the gear and hence is the best way to check gears before assembly.