20:1 planetary reduction for servo and motion axes
The GBX1200201403F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, sized for servo-motor output stages where a 20:1 reduction ratio transforms speed into torque. The 120 mm housing diameter and 260 N.m continuous output torque at 100 rpm suit it for indexing tables, conveyor drives, and pick-and-place axes that need compact inline reduction. Rated for 30000 hours service life at 100 rpm and 30 °C ambient, with the gearbox lubricated for life — no scheduled oil changes. The 94 % efficiency means roughly 6 % of input power is lost as heat, which the black anodized aluminium housing dissipates across the -25 to 90 °C operating range.
Torque, backlash, and shaft loading limits
Continuous output torque is 260 N.m at 100 rpm, with a peak maximum of 416 N.m available for intermittent overloads — the margin covers acceleration transients but not sustained duty above the continuous rating. Maximum torsional backlash is 12 arc.min, and torsional rigidity is 13 N.m/arcmin, giving predictable windup under load for positioning accuracy. The output shaft in C45 steel accepts 2100 N axial force (Fa) and 1500 N radial force (Fr) at 100 rpm for the full 30000-hour life; these limits increase to 2800 N axial and 2000 N radial for a 10000-hour duty cycle. Shaft output protection is IP54, sealing against dust and splash from the driven side. Noise at 1 m under no-load conditions measures 65 dB — typical for a straight-tooth planetary stage of this size. The straight-tooth design trades some acoustic smoothness for higher torque density compared to helical gears in the same envelope.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX1200201403F as obsolete. The part is available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ.