Planetary gearbox — 15:1 reduction, 110 N.m continuous
The GBX0800151403F is a planetary gearbox from Schneider Electric's GBX series, sized for servo and stepper motor output stages where a 15:1 reduction ratio is needed. The 80 mm housing diameter and straight-tooth design place it in the compact, moderate-torque class of inline planetary reducers. Continuous output torque is 110 N.m at 100 rpm and 30 °C, with a maximum intermittent torque of 176 N.m at the same speed — the 60 % headroom above continuous rating handles acceleration peaks and short overloads without immediate damage. Rated service life is 30,000 hours at 100 rpm and 30 °C, lubricated for life — no oil changes, but the gearbox is sealed and non-serviceable once the grease degrades.
Torque, backlash, and stiffness — what the numbers mean for fit
Maximum torsional backlash is 14 arcmin — this is the angular play between input and output when reversing direction. For positioning axes that reverse frequently (pick-and-place, indexing tables), 14 arcmin translates to roughly 0.23 mm of linear error at a 100 mm radius; tighter applications need a lower-backlash variant. Torsional rigidity is 6.5 N.m/arcmin — the gearbox twists 1 arcmin for every 6.5 N.m of applied torque. This stiffness figure matters when the load oscillates or when the servo loop gain is tuned against the mechanical resonance of the gear train. Maximum radial force on the output shaft is 650 N at mid-span for the 30,000-hour life target, or 950 N if you accept a 10,000-hour service life. Axial force limits are 900 N (30,000 h) and 1200 N (10,000 h) — both at 100 rpm and 30 °C. Overhung loads from belt drives or pinions must stay within these envelopes or the bearing life drops sharply.
Obsolete — sourcing through independent channels
Available through independent surplus and broker channels. Quantities are lot-specific and confirmed at RFQ time. No pin-compatible or dimensionally identical replacement is documented by the manufacturer, so a substitution would require checking the mounting flange, shaft diameter, and input interface against the application. The IP54 shaft output protection means the gearbox is splash-resistant but not submersible — suitable for dry indoor environments with occasional washdown mist, but not for direct hose-down or outdoor exposure without additional shielding.