16:1 planetary — what the torque numbers mean for your machine
The GBX1600160551F is a 160 mm-diameter planetary gearbox with a 16:1 reduction ratio, straight-cut teeth, and 10 arcmin maximum backlash. It delivers 800 N.m continuous output torque at 100 rpm and 30 °C — that is the figure to size against your steady-state load. The peak rating hits 1280 N.m at the same speed and temperature, which covers acceleration and occasional overloads as long as the duty cycle stays short. Efficiency is 94 %, meaning 6 % of the input power turns into heat inside the housing. For a 800 N.m output at 100 rpm (about 8.4 kW mechanical), that is roughly 500 W of thermal loss — the black anodised aluminium body sheds it through natural convection, so check the enclosure ventilation if the gearbox is boxed in.
Load limits — axial, radial, and service life
Maximum axial force Fa is 6000 N for the full 30000-hour service life at 100 rpm and 30 °C, or 8000 N if you accept a shorter 10000-hour life. Radial force Fr at mid-shaft is 4200 N for 30000 hours, 6000 N for 10000 hours. These numbers assume the load is applied at the midpoint of the output shaft — if your sprocket or pulley sits further out, the effective moment reduces the allowable radial load. Torsional rigidity is 41 N.m/arcmin — that is the stiffness the gearbox presents to the servo loop. For positioning applications, the 10 arcmin backlash plus the wind-up under load combine into the total lost motion the controller has to manage. Straight teeth are inherently noisier than helical; the 70 dB at 1 m no-load is a baseline — expect higher under load.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX1600160551F as obsolete. No official successor is recorded under the GBX family code. The gearbox is sourced through independent surplus and new-old-stock channels — quantities are lot-specific and confirmed at RFQ. Availability and current pricing are established at quote time against your BOM quantity. The shaft output carries IP54 protection — splash-resistant but not washdown-rated. The housing is black anodised aluminium, the shaft is C45 steel, and the unit ships lubricated for life, so no oil-change schedule. Operating ambient is -25 to 90 °C.