12:1 planetary gearbox — torque and backlash limits
The GBX0600120703F is a straight-tooth planetary gearbox in a 60 mm diameter black anodised aluminium housing, delivering a 12:1 reduction ratio. Continuous output torque is 44 N.m at 100 rpm and 30 °C; maximum intermittent torque reaches 70 N.m under the same conditions — the gap between continuous and peak defines the overload margin for indexing or jogging moves. Maximum torsional backlash is 20 arc.min, and torsional rigidity is 2.5 N.m/arcmin — these numbers tell you the windup under load. For a positioning axis that reverses direction, the 20 arc.min backlash means the output shaft can rotate that much before the gear teeth re-engage; the rigidity figure lets you calculate the angular deflection from the load torque alone.
Shaft loading and service life at rated speed
Rated service life is 30,000 hours at 100 rpm and 30 °C — the gearbox is lubricated for life, so no oil-change interval to schedule. The IP54 rating on the shaft output means it resists dust ingress and splashing water, but not hose-down; mount it where the seal face stays dry. Maximum radial force at mid-span on the output shaft is 340 N for the full 30,000-hour life, or 500 N if you accept a 10,000-hour life. Maximum axial force is 450 N for 30,000 hours, 600 N for 10,000 hours. These are the bearing-life limits — an overhung pulley or sprocket that exceeds the radial force will shorten service life faster than the torque rating suggests. Ambient operating range is -25 to 90 °C, which covers most indoor cabinet environments and some outdoor enclosures. The C 45 steel output shaft is standard for this class — hard enough for keyed or clamped couplings, but not stainless; consider the corrosion risk in washdown or chemical areas.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX0600120703F as obsolete. The part is sourced through independent surplus and new-old-stock channels; quantities are lot-specific and confirmed at RFQ.