... gear box can apply to RF-370 motors. 7,When the motors using at low speed,high ... gear ratio will cause gear motor torque more than 30kgf.cm.At this ... so the gearbox will be demaged. PINION SPECLFLCATLONS MOTOR INSTALLATLON Module0.30.3No.of teeth1215Pressure angle20°Hole ... torqueEfficiencyNumber of stagesGearbox length "L"mmDirection (Relationship with motor)4,4.754,43/42.0kgf · cm6.0kgf ...