The GBX0800160553F is a straight-tooth planetary gearbox from Schneider Electric's GBX series, 80 mm housing diameter, with a 16:1 reduction ratio. It delivers 120 N.m continuous output torque at 100 rpm and 30 °C ambient, with a peak overload capacity of 192 N.m at the same speed. The 14 arcmin maximum torsional backlash sets the positioning repeatability floor — for a servo-driven indexing table or a pick-and-place Z-axis, this is the angular slop the controller cannot correct. Straight-tooth geometry trades slightly higher noise (60 dB at 1 m, no-load) for lower cost and simpler manufacturing versus helical.
Torque, life, and the loads that limit it
Rated service life is 30,000 hours at 100 rpm and 30 °C with the continuous 120 N.m torque. The maximum radial force on the output shaft is 650 N at mid-span for that 30,000-hour life; push it to 950 N and the bearing life drops to 10,000 hours. Maximum axial force is 1200 N at 100 rpm for 10,000 hours, derating to 900 N for the full 30,000-hour window. Torsional rigidity is 6.5 N.m/arcmin — the shaft twists 1 arcmin for every 6.5 N.m of applied torque. In a high-gain servo loop, this compliance adds to the total system stiffness budget and may limit the achievable bandwidth.
Obsolete — sourcing reality for the GBX0800160553F
Schneider Electric lists the GBX0800160553F as obsolete. No official successor part number is published. The gearbox is available through independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ. The black anodized aluminium housing carries an IP54 rating at the shaft output — suitable for dry indoor environments with occasional dust or splash, but not washdown. Lubricated for life, so no maintenance interval for grease changes.