Planetary gearbox, 3:1, 28 N.m continuous — straight teeth, compact 60 mm body
The GBX0600030704F is a Schneider Electric planetary gearbox with a 3:1 reduction ratio, straight teeth, and a 60 mm external diameter. It delivers 28 N.m continuous output torque at 100 rpm and 30 °C, with a peak of 45 N.m for short-duration loads. Efficiency sits at 94 % — the straight-tooth design trades a few points of efficiency against helical for lower cost and zero axial thrust on the output bearings.
Torque, life, and the force limits that govern the fit
Rated service life is 30000 hours at 100 rpm and 30 °C, lubricated for life — no re-greasing interval to schedule. The gearbox is sealed at the shaft output to IP54, so it handles light splash and dust in indoor conveyor or packaging lines, but not washdown. Maximum axial force on the output shaft is 450 N for the full 30000-hour life, or 600 N if you accept a shorter 10000-hour service interval. Radial force is 340 N at mid-shaft for 30000 hours, 500 N for 10000 hours. These limits are at 100 rpm — overspeed derates them. Maximum torsional backlash is 16 arc.min — fine for simple indexing or conveyor positioning, but not for a servo axis that needs repeatable bidirectional accuracy under 5 arc.min.
Schneider Electric lists the GBX0600030704F as obsolete. Available through independent distribution — quantities are lot-specific and confirmed at RFQ. The black anodized aluminium housing and C45 steel shaft are standard for this class; the straight-tooth planetary stage is a direct swap-in for any 60 mm-frame, 3:1 application that can tolerate 16 arc.min backlash.