Attached please find the drawings of motor rotor of YSH-050 and YSH-100:
#100319 Motor Rotor of YSH-050 with shaft ø18mm working with #200197 Load Sheave with ø18mm
#100321 Motor Rotor of YSH-100 with shaft ø17mm working with #200196 Load Sheave with ø17mm
To have #200197 load sheave [ø18mm] installed with YSH-100 [22-2015002379] then there would be oil leaking on gearbox and then the gears should be weared easily!
We do think that there might be trouble on the origin #200196 of YSH-100 [22-2015002379], please do replace new #200196 Load Sheave to YSH-100 [22-2015002379] and test!
#200197 Load Sheave can work with YSH-050 only!!