12:1 reduction, 800 N.m continuous — the torque spec that matters
The GBX1600121004F is a planetary gearbox from Schneider Electric's GBX series, delivering a 12:1 reduction ratio. Its continuous output torque is 800 N.m at 100 rpm at 30 °C, with a maximum of 1280 N.m under the same conditions. That continuous figure is what you size the downstream coupling and shaft for — the peak is for transient overloads only. Efficiency sits at 94 %, which is typical for a single-stage planetary with straight teeth. The 10 arcmin maximum torsional backlash means this gearbox suits positioning applications where lost motion under 0.17° is acceptable — indexing tables or feed drives, not a robot wrist.
Obsolete — sourcing through independent channels
Schneider Electric lists this gearbox as Obsolete. Sourcing is through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. No direct drop-in replacement exists from the original manufacturer; a functional substitute would require verifying the mounting interface and torque ratings. The gearbox is lubricated for life and rated for 30000 hours service at 100 rpm and 30 °C. Axial force capacity is 6000 N and radial force is 4200 N at 100 rpm over that 30000-hour life, with higher forces available for shorter durations. The IP54 protection at the shaft output means it handles dry indoor environments but not washdown.
Mounting and environmental fit
The gearbox has a 160 mm external diameter and a black anodized aluminium housing. Shaft material is C45 steel. The straight teeth design means it's noisier than helical, but the 94% efficiency and lower cost trade off.