20:1 reduction, 20 N.m continuous — what it means for your drive train
The GBX0400201003F is a planetary gearbox with a 20:1 reduction ratio and a continuous output torque rating of 20 N.m at 100 rpm. That 20 N.m is the torque you can count on for steady-state positioning or constant-speed conveying — the gearbox won't overheat or wear prematurely if you stay under that limit. The maximum output torque hits 32 N.m at 100 rpm, which covers short-duration peaks like acceleration or jogging. Efficiency is listed at 94 %, so about 6 % of the input power is lost as heat inside the gearbox. That's typical for a planetary stage of this size and means you don't need to over-size the motor much to account for drive-train losses.
Mounting and environmental fit — IP54, lubricated for life
The shaft output seal is rated IP54, which means it's protected against dust ingress and splashing water — fine for most factory-floor environments but not for washdown or submersion. The housing is black anodized aluminium, 40 mm in diameter, with a C 45 steel shaft. It's lubricated for life, so no maintenance schedule for oil changes.