The GBX0800050702D is a straight-tooth planetary gearbox from Schneider Electric's GBX series, 80 mm housing diameter, with a 5:1 reduction ratio. It delivers 110 N.m continuous output torque and peaks at 176 N.m maximum, which tells you the sustained load it can carry in a positioning or conveyor drive without overheating the gear mesh. Rated efficiency is 96 % — that's the power loss through the gear train at rated load, so a motor feeding 115 W into the input sees about 110 W at the output shaft. The rest goes to friction and churning losses in the lifetime grease fill.
Torque, backlash, and service life — the three numbers that decide fit
Maximum torque 176 N.m is the overload ceiling for occasional peak loads, not sustained operation. The 5:1 reduction means input speed is five times output speed; torque multiplies inversely minus the 4 % loss. Maximum torsional backlash is 12 arc.min — that's the angular play between input and output when reversing direction. For a positioning axis with a servo motor, 12 arc.min is noticeable; if your application needs tighter repeatability, a lower-backlash gearbox is the call. Torsional rigidity of 6 N.m/arcmin tells you how much the gear train winds up under load — at 110 N.m output, expect about 18 arcmin of windup. Service life is 30000 h at 100 rpm output speed and 30 °C ambient — that's about 3.4 years of continuous running. The gearbox is lubricated for life, so no maintenance schedule for grease changes.
Load capacities and mounting — shaft loads and position flexibility
Maximum axial force on the output shaft is 1200 N at 100 rpm for a 10000-hour life, derating to 900 N for the full 30000-hour service. Maximum radial force is 650 N at 100 rpm for 30000 hours, measured at mid-span on the shaft. These numbers matter when you're coupling to a belt drive or a pinion that applies side load. Mounting position is any position — horizontal, vertical shaft up or down, angled. The IP54 rating on the shaft output means it keeps dust out and handles splashing water, but it's not submersible or washdown-rated. Housing is black anodized aluminium; shaft is C 45 steel. Moment of inertia at the input is 0.45 g.cm² — a light rotor inertia that won't dominate the servo tuning. Noise level is 60 dB at 1 m, no-load, which is quiet enough for most production floors without enclosure.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX0800050702D as obsolete. The gearbox is available through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. For a line-down situation, the 80 mm frame size and 5:1 ratio are the critical dimensions to match. The straight-tooth planetary design is common; a functional replacement from another manufacturer with the same mounting flange, shaft diameter, and torque rating will likely fit without a motor adapter plate change.