JGB37‑520 Speed Reduction Gear Motor Electric Micro DC Geared Motor with Encoder DC12V1590RPM Item Type: Speed Reduction Gear Motor Material: Copper, Alloy Shaft Diameter: Approx. 6mm / 0.2in (D Type Shaft) Shaft Length: Approx. 15.5mm / 0.6in Output Signal: SW Encoder Power Supply Voltage Range: 3.3V-5V Working Temperature Range: -40℃-120℃ / -40°F-248°F Motor Working Voltage: DC 12V Uses: suitable for household appliances, medical equipment, automatic money counters, vending machines, copiers, video recorders, production automation Reduction ratio  6.3 10 19 30 56 90 131 168 270 506 810 No load current mA  ≤120 ≤120 ≤120 ≤120 ≤120 ≤120 ≤120 ≤120 ≤120 ≤120 ≤120 No load speed rpm  1590 1000 530 333 178 111 76 60 37 20 12 Rated torque kg.cm  0.7 1 2.2 3.5 6.5 10 15 19 30 35 35 Rated speed rpm  1200 770 107 250 140 85 58 46 28 15 9 Rated current A  ≤1 ≤1 ≤1 ≤1 ≤1 ≤1 ≤1 ≤1 ≤1 ≤1 ≤1 Maximum torque kg.cm  1 1.6 3.1 5 9 15 24 31 Maximum withstand 35KG Stop current A  2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 Ban stall Length                  19                 22                 24                       26.5                 29