Torque and reduction — sizing the drive train
The GBX0600200403D: With a 20:1 reduction ratio and 44 N.m continuous output torque (70 N.m maximum), this planetary gearbox matches servo or stepper motor outputs in the 200–400 W range for indexing, positioning, or conveyor drives. The 94 % efficiency means about 6 % of the input power is lost as heat — relevant for thermal management in a sealed enclosure or when sizing the motor's continuous current.
Mechanical constraints — shaft loads and service life
Rated for 30,000 hours at 100 rpm and 30 °C, with maximum axial force 450 N and radial force 340 N at mid-shaft for that life target. For shorter 10,000-hour duty, axial load can go to 600 N and radial to 500 N. The C 45 steel output shaft and black anodized aluminium housing handle standard industrial environments; the IP54 rating at the shaft output means it resists dust and splashing water but is not suited for washdown or submerged service.
Backlash and precision
Maximum torsional backlash is 25 arc.min — a straight-tooth planetary at this price point. For applications needing tighter positioning repeatability (index tables, pick-and-place), a low-backlash or helical planetary would be required.
Noise and maintenance
Noise level is 58 dB at 1 m, no-load — quiet enough for operator-adjacent machinery without acoustic enclosures. The gearbox is lubricated for life, so no scheduled grease changes.