{"title":"12V Low noise DC Motor 146RPM w/Encoder","handle":"12v-low-noise-dc-motor-146rpm-w-encoder","url":"/products/12v-low-noise-dc-motor-146rpm-w-encoder","description":"The DFRobot 12V Low Noise DC Motor (Model 28PA51G) is a quiet, high-torque geared motor with a built-in two-phase hall encoder. Designed for applications where noise is a concern, it produces approximately 57–68 dBA under no-load conditions — making it well suited for indoor robotics and equipment.\n\nThe integrated encoder delivers 13 pulses per revolution at the motor shaft, which translates to 663 PPR at the gearbox output (51:1 ratio). This enables precise speed measurement and closed-loop position control using standard interrupt-based code on Arduino or similar microcontrollers.\n\nKey Features\n\n\nLow Noise Operation – Approximately 57–68 dBA at 10 cm under no-load conditions\n\nHigh Torque Output – 10 kg·cm rated torque at 12V\n\nTwo-Phase Hall Encoder – 13 PPR motor shaft / 663 PPR gearbox shaft for direction and position sensing\n\n51:1 Planetary Gearbox – 146 RPM no-load output speed at 12V\n\n6-Pin Connector – Motor power and encoder signals on a single cable\n\n\nSpecifications\n\n\nModel – 28PA51G\n\nWorking Voltage – 12V DC\n\nNo-Load Speed (motor) – 8000 RPM\n\nNo-Load Speed (gearbox) – 146 RPM @ 12V\n\nNo-Load Current – 0.23A @ 12V\n\nStall Current – 3.6A\n\nRated Torque – 10 kg·cm @ 12V\n\nGear Ratio – 51:1\n\nEncoder Resolution – 13 PPR (663 PPR at gearbox shaft)\n\nNoise – ~57–68 dBA @ 10 cm (no load)\n\nDimensions – 123 × 36 × 36 mm\n\nWeight – 270 g\n\n\nIdeal For\n\nIndoor mobile robots and service robots\nNoise-sensitive motorised equipment\nClosed-loop speed and position control projects\nRobotics platforms requiring precise encoder feedback\n\n\nPackage Contents\n\n1× 12V DC Motor with Encoder (28PA51G)\n1× Encoder Cable\n1× Encoder Board (FIT0324)\n\n\nResources\n\n\nWiki Documentation – Wiring diagrams, encoder connection details, and sample Arduino code\nMechanical Drawing\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":10302,"title":"Default Title","sku":"DF-FIT0277","price":83.43,"on_sale":false,"in_stock":true,"available_quantity":27,"option1":"Default Title"}]}