The GBX0400201004F is a 40 mm-diameter planetary gearbox with a 20:1 reduction ratio — the primary spec that decides whether it fits a given motor speed/torque profile. At 100 rpm input, it delivers 20 N.m continuous output torque and can handle 32 N.m peak, which sets the sustained load envelope and the overload ceiling for the axis. Backlash is 28 arcmin maximum — this is the positioning deadband when reversing direction. For applications requiring tighter repeatability, a lower-backlash unit would be needed; for general indexing or conveyor drives, this is within the typical range for a straight-tooth planetary stage. Efficiency runs at 94 %, so about 6 % of the input power is lost as heat. In a closed cabinet or near temperature-sensitive components, that thermal load needs to be factored into the enclosure sizing.
Obsolete — sourcing reality for the GBX0400201004F
Stock is sourced through independent surplus and broker channels.
Mounting and environmental fit
The housing is black anodized aluminium with a shaft output rated IP54 — suitable for dusty indoor environments or light splash, but not for washdown or submersion. The operating range is -25 to 90 °C ambient, which covers most industrial cabinet conditions. Shaft material is C45 steel. Maximum radial force at the output shaft is 200 N at 100 rpm for a 10,000-hour service life, derating to 160 N for the full 30,000-hour rating. Axial force limits follow the same profile. These numbers govern the coupling and driven load interface — overhung loads need to stay within these bounds to hit the rated life.