Planetary gearbox with 8:1 reduction and 50 N.m continuous rating
The GBX0800080702D is a straight-tooth planetary gearbox from the Schneider Electric GBX series, 80 mm in diameter, with an 8:1 reduction ratio. Efficiency is listed at 96 %, which is typical for a single-stage planetary stage at this ratio. The 60 dB noise level at 1 m, no-load, is low enough for most machine-tool and packaging-line environments without additional acoustic enclosures.
Torque, life, and load limits at 100 rpm
Continuous output torque is 50 N.m; maximum output torque is 80 N.m. The gap between continuous and peak is the thermal reserve for acceleration transients — sustained operation above 50 N.m will shorten the 30,000-hour service life at 100 rpm and 30 °C. Maximum radial force at the output shaft is 650 N at 100 rpm for the 30,000-hour life target, and 950 N for a 10,000-hour duty. Axial force limits are 1200 N at 100 rpm for 10,000 hours, derating to 900 N for the full 30,000-hour envelope. These are mid-shaft force applications — end-of-shaft loads will be lower.
Stiffness, backlash, and positioning accuracy
Torsional rigidity is 6 N.m/arcmin — this is the stiffness that resists windup under load. Maximum torsional backlash is 12 arc.min, which is standard for a commercial-grade planetary without anti-backlash preloading. For indexing or positioning axes, the 12 arc.min figure sets the repeatability floor.
Environmental envelope — temperature, sealing, and mounting
The shaft output seal is rated IP54, meaning dust-protected and splash-resistant — not submersible, but adequate for dry or lightly misty machine compartments. Mounting position is any orientation, which simplifies integration into vertical or inverted axis layouts. The gearbox is lubricated for life — no maintenance ports or oil-change intervals to schedule.
Lifecycle status — obsolete, sourced through independent channels
Schneider Electric lists the GBX0800080702D as obsolete.