What the GBX-160 frame delivers at 25:1
The Schneider Electric GBX1600251083D is a planetary gearbox in the GBX series with a 160 mm external diameter and a 25:1 reduction ratio, sized for servo-driven motion loops where the driven shaft sees steady torque well below the gearbox's peak rating.
Torque envelope and service life at the output shaft
The continuous output torque is rated 700 N.m, with a maximum output torque of 1120 N.m for transient peaks — a roughly 1.6:1 headroom above continuous that controls how aggressively the upstream drive can accelerate without overshooting the gearbox's continuous thermal load.
Stiffness, backlash, and inertia at the input
Torsional rigidity is 41 N.m/arcmin and maximum torsional backlash is 10 arc.min, so the GBX1600251083D suits positioning loops where repeatability matters more than absolute precision — backlash figures in this range are predictable from cycle to cycle rather than accumulating drift. Moment of inertia at the input is 5.81 g.cm², low enough to leave the drive's acceleration profile dominated by the load rather than the gearbox itself.
Mechanical envelope and integration constraints
The shaft is C 45 steel and the shaft output side carries an IP54 rating, so the unit is sealed against splashing water and dust ingress at the output but is not rated for hosedown or submerged duty — any washdown environment needs a downstream shaft cover. Housing is black anodized aluminium, the unit is lubricated for life so there is no service port to schedule, and the permitted mounting position is any orientation across an ambient operating window of -25 to 90 °C. Noise level is 70 dB at 1 m under no-load — typical for a 160 mm planetary frame and a useful input to any cabinated envelope calculation.