The GBX1200090704F is a 120 mm-diameter planetary gearbox from Schneider Electric's GBX family, delivering a 9:1 reduction ratio with straight-cut teeth. The continuous output torque is 210 N.m at 100 rpm and 30 °C, and the maximum output torque reaches 336 N.m under the same conditions — the margin between continuous and peak covers acceleration transients and occasional overloads without oversizing the gearbox. Torsional backlash is rated at 12 arc.min maximum — this is a standard-precision planetary stage, not a zero-backlash unit. For indexing or positioning axes where reversal error matters, the 12 arc.min figure sets the repeatability floor; a servo drive with encoder feedback can compensate, but the mechanical windup is still in the loop. Efficiency is listed at 94 %, which is typical for a single-stage planetary with straight teeth and oil lubrication. The 6 % loss is mostly gear mesh friction and bearing drag; at continuous 210 N.m output, that translates to roughly 13–15 W of heat dissipated inside the housing — the black anodised aluminium body (120 mm OD) radiates that without forced cooling in most panel-mount or machine-frame installations.
Lifecycle status — obsolete, sourced through independent channels
Schneider Electric lists the GBX1200090704F as obsolete. The part is available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ. No pin-compatible drop-in replacement is documented — a substitution would require checking the mounting flange, shaft diameter, and input interface against the existing installation. For a line-down situation or a BOM fill, the GBX1200090704F can be quoted to order against your required quantity. No stock-holding claim is made; each order is sourced per RFQ.
Mechanical ratings — axial and radial load capacity, service life
The output shaft (C 45 steel) is rated for a maximum axial force of 2100 N at 100 rpm over a 30,000-hour service life at 30 °C, and 2800 N if the life target is reduced to 10,000 hours. Radial force limits are 1500 N and 2000 N respectively, with the force applied at mid-distance from the output shaft. These are the bearing life limits — exceeding them shortens the L10 life faster than torque overload does. The gearbox is lubricated for life — no oil changes or regreasing intervals. The shaft output seal carries an IP54 rating, meaning it is dust-protected and splash-resistant but not submersible. Ambient operating range is -25 °C to 90 °C, which covers most indoor industrial environments and unheated machine sheds. Noise level is 65 dB at 1 m, no-load — this is the gear mesh whine from straight-cut teeth. Under load the level rises slightly with torque, but the 65 dB figure gives a baseline for machine noise budgeting. The 13 N.m/arcmin torsional rigidity figure means the gearbox twists about 0.077 arcmin per N.m of applied torque — negligible for most conveyor and rotary-indexing axes, but worth checking if the load has a high inertia-to-stiffness ratio.