GP42 – High-torque planetary gearboxes Description Technical data Planetary gearboxes for NEMA 17 stepper motors and brushless DC motors. Suitable for external rotor motors and internal rotor motors. Reduction Ratio 3.93 - 45.82 Rated Output Torque 1.8 Nm - 9.9 Nm Efficiency 83 % - 91 % Max. Backlash 39 ´(arc minutes) - 57 ´(arc minutes)
GP56 – High-torque planetary gearboxes Description Technical data Planetary gearboxes for NEMA 23 and 24 (56/60 mm) motors. With 12mm shaft and planets that run on sliding bearings or with 14mm shaft and reinforced output bearings. Reduction Ratio 3.29 - 62.33 Rated Output Torque 3.6 Nm - 29.1 Nm Efficiency 86 % - 95 % Max. Backlash 29 ´(arc minutes) - 35 ´(arc minutes)