8:1 planetary gearbox, 40 mm frame, 6 N.m continuous
The GBX0400080702F is a Schneider Electric planetary gearbox with a 40 mm external diameter and an 8:1 reduction ratio, delivering 6 N.m continuous output torque at 100 rpm and 30 °C. Straight-tooth gearing keeps the design compact and cost-effective for positioning axes where low backlash is not the primary constraint. Rated service life is 30,000 hours at 100 rpm and 30 °C, with maximum output torque of 10 N.m under the same conditions. The gearbox is lubricated for life — no maintenance refill schedule.
Torque, backlash, and thermal limits
Continuous torque is 6 N.m; maximum torque peaks at 10 N.m, so the gearbox can handle short-duration overloads of about 67 % above the continuous rating. Maximum torsional backlash is 30 arcmin — this is a standard-precision planetary, not a zero-backlash stage, and the 1 N.m/arcmin torsional rigidity means the output shaft deflects measurably under load. Ambient operating range is -25 to 90 °C, and the shaft output seal carries IP54 protection — splash-resistant but not washdown-rated. Axial force (Fa) is limited to 200 N for a 10,000-hour life at 100 rpm and 30 °C, dropping to 160 N for the full 30,000-hour service life; radial force (Fr) follows the same derating curve. Efficiency is listed at 94 %, which is typical for a single-stage planetary with straight teeth — the remaining 6 % is lost to gear mesh friction and bearing drag. Noise level is 55 dB at 1 m, no-load, so it is quiet enough for laboratory or light-industrial environments.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX0400080702F as obsolete. The gearbox is sourced through independent surplus and broker channels.