Planetary gearbox, 120 mm, 20:1 — torque and backlash specs
The GBX1200200701F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, 120 mm external diameter, with a 20:1 reduction ratio. It delivers 260 N.m continuous output torque at 100 rpm and 30 °C, with a maximum of 416 N.m at the same speed and temperature. Maximum torsional backlash is 12 arc.min, and torsional rigidity is 13 N.m/arcmin — these numbers tell you the angular positioning error under load, which matters for indexing or pick-and-place applications where repeatability is tight.
Efficiency, noise, and service life — what the ratings mean
Rated 94% efficiency at full load — the 6% loss goes to heat in the gear mesh and bearings. For a 260 N.m output at 100 rpm, that's roughly 2.7 kW input to get 2.5 kW out; the thermal dissipation is manageable in a ventilated enclosure but needs consideration in a sealed cabinet. Noise level is 65 dB at 1 m, no-load — that's about the hum of a quiet office printer, not silent but well below the 85 dB threshold where hearing protection is typically required. The IP54 shaft output rating means the gearbox is dust-protected and splash-resistant at the output seal, but not rated for hose-down washdown. Service life is 30,000 hours at 100 rpm and 30 °C — that's about 3.4 years of continuous 24/7 operation. The gearbox is lubricated for life, so no oil changes or regreasing intervals to schedule.
Sourcing and lifecycle — obsolete, sourced to order
Schneider Electric lists the GBX1200200701F as obsolete. The part is available through independent distribution channels — quantities are confirmed at RFQ, and the price reflects the surplus/broker market rather than factory-direct pricing. For a BOM that needs this exact reduction ratio and torque class, the GBX1200200701F is still orderable through our sourcing desk. We quote against the specific quantity and confirm availability before committing. If a direct replacement is needed, a parametric search on 120 mm planetary gearboxes with 20:1 ratio and 260 N.m continuous torque will surface current-production alternatives from other manufacturers.