Planetary gearbox for precision motion — 60 mm frame, 4:1 reduction
The GBX0600040701D is a straight-tooth planetary gearbox in the 60 mm diameter GBX series from Schneider Electric, delivering a 4:1 reduction ratio with a maximum torsional backlash of 20 arc.min. Continuous output torque is 38 N.m, with a peak capability of 61 N.m — the margin between continuous and maximum tells you the thermal ceiling for intermittent overloads. Rated efficiency of 96 % means only 4 % of input power is lost as heat in the gear mesh, which keeps the housing temperature rise predictable in a closed cabinet.
Load ratings and service life — what the numbers mean for a motion axis
Service life is specified at 30,000 hours at 100 rpm and 30 °C ambient — this is the L10 life under rated load, not a wear-out limit; running at lower torque or speed extends it proportionally. Maximum axial force on the output shaft is 450 N at 100 rpm for the 30,000-hour target, or 600 N if you accept a 10,000-hour service interval — a direct trade-off between load and replacement cycle. Radial force capacity follows the same pattern: 340 N at mid-span for 30,000 hours, 500 N for 10,000 hours — the overhung load from a belt or chain drive must stay within these limits to avoid bearing fatigue. Torsional rigidity of 2.3 N.m/arcmin means the gearbox twists about 0.43 arcmin per N.m of applied torque — relevant for positioning accuracy in a servo axis where windup affects settling time.
Integration notes — mounting, lubrication, and environmental sealing
Mounts in any position — no oil-level restriction — because it is lubricated for life with a sealed grease charge, eliminating the need for a breather or level check during commissioning. Shaft output seal is rated IP54, which keeps out dust and splashing water but is not submersible — suitable for a dry machine frame or a cabinet with occasional coolant mist, not a washdown zone. Housing is black anodized aluminium (60 mm external diameter) with a C 45 steel output shaft — the aluminium body sheds heat faster than cast iron, but the shaft hardness limits repeated disassembly for coupling changes. Ambient temperature range of -25 to 90 °C covers most industrial enclosures; the grease viscosity is selected for this window, so no cold-start preheat or high-temp derating is needed within the band.
The GBX0600040701D carries an active lifecycle status from Schneider Electric — it is a current catalog item, not a phase-out or NRDN line.