The 20mm general gearmotors are widely used on Intelligent robots,intelligent manipulators, intelligent furnitures, Intelligent focusing systems etc. Those are incredibly tough and feature full metal gears. Have gear ratio 12.5:1 to 488:1, 590rpm~15rpm, stall torque 0.6~7Kg.cmType: MG20E-06145-50Features:
Voltage: 6-9 Volts
Gear Ratio: 50:1
Stall Torque:1.2Kg.cm (6V)
No load Speed: 145RPM (6V)
No Load Current: 150mA (6V)
Rated: 0.8Kg.cm,110rpm,0.6A
Stall Current: 2.0A (6V)AB phase 11ppr Hall Sensor Encoder(data sheet at: 6V 290rpm 25:1 )