{"title":"20.4:1 Metal Gearmotor 25Dx50L mm HP 12V with 48 CPR Encoder","handle":"20-4-1-metal-gearmotor-25dx50l-mm-hp-12v-with-48-cpr-encoder","url":"/products/20-4-1-metal-gearmotor-25dx50l-mm-hp-12v-with-48-cpr-encoder","description":"A high-power 12V brushed DC gearmotor with a 20.4:1 metal spur gearbox and integrated 48 CPR quadrature encoder. The encoder on the motor shaft provides 979.62 counts per revolution of the gearbox output shaft, enabling precise speed and position control for robotics applications.\n\nThe cylindrical motor body is just under 25mm in diameter, with a 4mm D-shaped output shaft extending 12.5mm from the gearbox face plate.\n\nKey Features\n\n\n20.4:1 Metal Gearbox – Durable metal spur gears for reliable torque transmission\n\n48 CPR Quadrature Encoder – 979.62 counts per gearbox output revolution\n\nHigh-Power 12V Motor – 500 RPM no-load speed\n\nCompact Form Factor – ~25mm diameter cylindrical body\n\nD-Shaped Output Shaft – 4mm diameter, 12.5mm long\n\n\nSpecifications\n\n\nVoltage: 12V\n\nGear Ratio: 20.4:1\n\nNo-Load Speed: 500 RPM\n\nNo-Load Current: 300mA\n\nStall Torque: 6 kg·cm (85 oz·in)\n\nStall Current: 5.6A\n\nEncoder Resolution: 48 CPR (979.62 CPR at output)\n\nOutput Shaft: 4mm D-shaped, 12.5mm long\n\nMotor Diameter: ~25mm\n\n\nIdeal For\n\nRobotics and autonomous vehicles\nPrecision motor control with encoder feedback\nPID speed and position control projects\nWheeled robot platforms\n\n\nPackage Contents\n\n1× 20.4:1 Metal Gearmotor 25D×50L mm HP 12V with 48 CPR Encoder\n","vendor":"Pololu","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":12406,"title":"Default Title","sku":"PL-3215","price":71.98,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":1,"option1":"Default Title"}]}