16:1 planetary reduction — 120 N.m continuous duty
The GBX0800161402F: This is a straight-tooth planetary gearbox in an 80 mm diameter black anodized aluminium housing. The 16:1 reduction ratio converts a 100 rpm input to 6.25 rpm output at the shaft, with a continuous output torque rating of 120 N.m (1062 lbf.in) at 100 rpm and 30 °C. Maximum output torque reaches 192 N.m (1699 lbf.in) under the same conditions — the duty cycle between continuous and peak determines how long the gearbox runs before thermal limits are reached. Service life is 30000 hours at 100 rpm and 30 °C — roughly 3.4 years of continuous running. The gearbox is lubricated for life, so no oil changes or regreasing intervals are needed. The C45 steel output shaft carries a maximum axial force of 1200 N and a maximum radial force of 950 N at the mid-point of the shaft, both at 100 rpm and 30 °C for a 10000-hour service life.
94% efficiency and 14 arcmin backlash — what they mean for the drive train
The 94% efficiency figure means 6% of the input power is lost as heat inside the gearbox. For a motor delivering 120 N.m at the output, the input power needs to be about 6.4% higher to account for the losses — this matters for thermal management in a sealed enclosure. The 14 arcmin torsional backlash is the angular play between input and output when the direction reverses; for a positioning system, this sets the repeatability floor — a 14 arcmin gap at the output shaft translates to roughly 0.23° of lost motion, which may or may not be acceptable depending on the application's accuracy requirements. Noise level is 60 dB at 1 m under no-load conditions — about the level of a normal conversation. The IP54 rating on the shaft output means the seal keeps out dust and splash water, but the gearbox is not submersible.