The 25mm 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 4.4:1 to 478:1,2700rpm~25rpm, stall torque 1.8~12Kg.cmType: MG25B-120300-20Features:
Voltage: 6-12 V
Gear Ratio:20:1
Stall Torque: 2.7Kg.cm (12V)Stall Current: 0.8A (12V)No load Speed: 300RPM (12V)
No Load Current: 80mA (12V)Rated torque: 0.75Kg.cm,Rated Speed: 225rpm,Rated Current: 0.25A
Size:25*49.8(gearhead length 19mm)(data sheet at: 12V 1360rpm 4.4:1 )