Planetary gearbox for precision motion — 40 mm frame, 8:1 reduction
The GBX0400080554F is a 40 mm-diameter planetary gearbox from Schneider Electric's GBX series, built for servo and stepper motor applications that need a compact, right-angle-free speed reduction. The 8:1 ratio drops motor speed by a factor of eight while multiplying torque — the maximum output torque is 10 N.m at 100 rpm and 30 °C, which sets the continuous-duty ceiling for sizing the downstream coupling and driven load. Straight-tooth spur gearing keeps the design simple and cost-effective, though it produces more audible noise than helical — the no-load noise level is 55 dB at 1 m, typical for this gear class. The 30 arc.min maximum torsional backlash means the output shaft can rotate up to half a degree before the input engages, which matters for positioning accuracy in indexing or pick-and-place cycles.
Rated life and load limits — 30000 hours at rated speed
Service life is 30000 hours at 100 rpm and 30 °C, lubricated for life with no maintenance interval for grease changes. The axial and radial force limits drop from 200 N to 160 N when the target life extends from 10000 to 30000 hours — a derating curve that matters when the gearbox supports a belt-drive or leadscrew with overhung loads. Shaft output sealing is IP54, meaning the output shaft end is protected against dust ingress and splashing water — suitable for dry indoor machine builds but not washdown environments. The black anodized aluminium housing dissipates heat from the gear mesh; the C45 steel output shaft handles the rated radial and axial forces without plastic deformation at the bearing seats. Torsional rigidity is 1 N.m/arcmin — the shaft twists one arc-minute per newton-metre of applied torque. This stiffness number feeds into the servo tuning loop: a low-rigidity gearbox adds compliance that can excite resonance if the drive's bandwidth is set too high.
Obsolete — sourcing through independent channels
Schneider Electric has marked the GBX0400080554F as obsolete. The gearbox is sourced through independent surplus and broker channels — quantities are lot-specific and confirmed at the time of RFQ. For a BOM that requires this exact 40 mm frame, 8:1 ratio, and 10 N.m torque rating, the GBX0400080554F remains the correct part number. Any substitution would need a mechanical re-design of the motor mount and output coupling because the frame diameter, shaft dimensions, and bolt pattern are specific to the GBX series.