Stepper Motors With Gearbox

Ratio is output torque on gearbox shaft @ output torque from motor. For example, 5:1 increases torque by a factor of 5 and reduces speed by a factor of 5.
A spur gear has an offset output shaft from centre, whereas the planetary gear output has a centred output shaft.
Consult the datasheets for exact dimensions.

    
Stepper Motor With Gearbox
Stepper Motor Driver
SKU MPN# Ratio Frame Gear Type Stock Status Price (Excl.) SKU MPN# Stock Status Price (Excl.)
101577 57BYGH627AG5 5:1 Nema 23 Spur 6 100551 DQ542MA 99
101578 57BYGH627AG10-X 10:1 Nema 23 Planetary 0 / 4 100551 DQ542MA 99
102572 86STH118-6004AG10 10:1 Nema 34 Spur 4 200622 DQ860HA 25 / 15
102242 86STH118-6004A10-Z 10:1 Nema 34 Planetary 2 / 4 200622 DQ860HA 25 / 15
201053 WT86STH118-6004AG28NS 28:1 Nema 34 Planetary Back-order 200622 DQ860HA 25 / 15
Spur gear Planetary gear