What the 9:1 reduction and 16.5 N.m continuous torque mean for your axis
The GBX0400090703F is a 40 mm-diameter planetary gearbox with a 9:1 reduction ratio, delivering 16.5 N.m continuous output torque at 100 rpm and 30 °C ambient. That continuous rating is the number to size against — the maximum output torque of 26 N.m is a short-duration peak, not a steady-state load. Straight-tooth planetary stages give this gearbox a rated efficiency of 94 %, which is typical for this class. The 28 arc-min maximum torsional backlash means it suits positioning axes where repeatability matters more than absolute accuracy — think pick-and-place or indexing tables, not precision contouring.
Lifecycle reality — obsolete, sourced through independent channels
Schneider Electric lists the GBX0400090703F as obsolete. The 30,000-hour service life at 100 rpm and 30 °C is the design baseline — the gearbox is lubricated for life, so no field re-greasing interval to track. If your application runs at higher speed or temperature, the service life derates accordingly.
Mechanical limits — radial and axial load capacity
Maximum radial force Fr is 200 N at 100 rpm for a 10,000-hour life, dropping to 160 N for the full 30,000-hour rating — both measured at mid-distance from the output shaft. Maximum axial force Fa follows the same pattern: 200 N for 10,000 hours, 160 N for 30,000 hours. These are the hard limits for belt-pulley or direct-couple loads on the output shaft.
Operating envelope and noise
Noise level is 55 dB at 1 m, no-load — quiet enough for lab or assembly areas without acoustic enclosures. The C 45 steel output shaft and straight-tooth gearing are standard for this duty class. No special mounting hardware ships in the single-unit package — the gearbox alone, so factor in the mating pinion and fasteners for your kit.