DC geared motor for robots and door lock use

Dimension information: Gear box dia: 12mm Gear box length: 9mm For 1000: 1 gear ratio, the length is 11mm With N20 motor Gear ratios and Gear box length: 9.1mm lenth based on gear ratios: 1/10 1/20 1/30 1/50 1/63 1/70 1/100 1/110 1/150 1/210 1/298 1/380 12.1mm gear box length based on gear rations: 1/625 1/1000 Technical performance: MBI-1FN20-30-12480 Gear ratio: 1/30 Voltage range: 3-12V Working voltage: 12V No load speed: 480r/min No load current: 0.03A On load: 0.06kg. Cm On load current: 0.11A On load speed: 340r/min MBI-1FN20-50-03350 Gear ratio: 1/50 Voltage range: 1.5-3V Working voltage: 3V No load speed: 350r/min No load current: 0.1A On load: 0.75kg. Cm On load current: 0.32A On load speed: 300r/min MBI-1FN20-100-06240 Gear ratio: 1/100 Voltage range: 3-6V Working voltage: 6V No load speed: 240r/min No load current: 0.06A On load: 0.14kg. Cm On load current: 0.1A On load speed: 225r/min MBI-1FN20-298-0340 Gear ratio: 1/298 Voltage range: 1.5-3.0V Working voltage: 3.0V No load speed: 40r/min No load current: 0.04A On load: 0.20kg. Cm On load current: 0.59A On load speed: 29.5r/min