Lifecycle status — obsolete, last-time-buy window
Schneider Electric lists GBX1200200842D with product status Obsolete — that is the headline fact for any procurement action on this code. The unit itself is a planetary gearbox in the GBX family, 120 mm frame, with straight-cut teeth and a 20:1 single-stage reduction.
Continuous and peak torque envelope
Continuous output torque is 260 N.m, with a maximum output torque ceiling of 416 N.m — sizing for the peak figure is what trips design reviews when the gearbox is matched to a servo drive in a stop-and-go motion profile. The reduction ratio of 20:1 places this in the GBX-120 mid-range single-stage; torsional rigidity is 13 N.m/arcmin, so torsional wind-up under transient load becomes part of the positioning error budget, not a number you can ignore.
Service life and mechanical load ratings
Rated service life is 30000 h at 100 rpm, 30 °C — derate from this point for either higher speed, higher temperature, or sustained side loads because the load ratings are conditional on that duty point. Maximum axial force is 2100 N at 100 rpm over the 30000 hour envelope and 2800 N if the design only budgets 10000 h; maximum radial force is 1500 N and 2000 N on the same two-hour bases, both applied at mid-distance from the output shaft.
Shaft, housing, and mounting details
Output shaft is C 45 steel with IP54 sealing at the shaft exit, set in a black anodized aluminium housing that mounts in any position. Maximum torsional backlash sits at 12 arcmin and the gearbox is lubricated for life, so the only field-side service item is keeping the exterior bearing surfaces clean.
Efficiency, noise, and inertia
Single-stage straight-tooth mesh holds efficiency at 94% and radiated noise at 65 dB measured at 1 m on no-load — useful as a baseline when this gearbox is specified into noise-sensitive packaging machinery. Moment of inertia is 1.5 g.cm² at the input — small enough to keep the reflected load on the servo motor within standard sizing practice.