Recomendation for precise indexing function :
When using an indexing cluch it is extremely important to select a hold back device OR a brake to prevent rotation in
reverse stroke because driven part may be slightly rotate reverse due to reverse torque (back forcew ) occurs during function. Since the backstopping repeats the overrinning & engaging at the same frequency as that of indexing clutch, recommended to use the holdback equivalent to indexing cluch or one size smaller OR frictional brake has as small
as possoble braking force / a positioning pin / a stopper may be used for this purpose .