{"title":"50:1 Micro Metal Gearmotor HPCB 12V","handle":"50-1-micro-metal-gearmotor-hpcb-12v","url":"/products/50-1-micro-metal-gearmotor-hpcb-12v","description":"The 50:1 Micro Metal Gearmotor HPCB 12V is a compact brushed DC gearmotor from Pololu's popular micro metal gearmotor family. This high-power carbon brush (HPCB) variant operates at 12V and draws half the current of its 6V equivalent for the same performance, making it better suited to 12V systems and battery configurations.\n\nThe carbon brush design provides significantly longer motor life compared to precious metal brush versions, making it suitable for projects that require extended or continuous operation. The 50:1 gear ratio provides a good balance of speed (650 RPM) and torque (0.67 kg·cm stall) for small robot drives and mechanisms.\n\nKey Features\n\n\n50:1 Gear Ratio – Balanced speed and torque for versatile applications\n\n12V HPCB Motor – High-power carbon brushes for extended motor life\n\nHalf the Current – Same performance as the 6V version at half the current draw\n\n3mm D-Shaft Output – 9mm long, compatible with Pololu wheels and hubs\n\nCompact Form Factor – 10 × 12mm gearbox cross-section\n\n\nSpecifications\n\n\nGear Ratio: 50:1\n\nRated Voltage: 12V\n\nFree-Run Speed: 650 RPM\n\nFree-Run Current: 80mA\n\nStall Torque: 0.67 kg·cm (9.3 oz·in)\n\nStall Current: 0.75A\n\nMax Power Output: 1.1W\n\nOutput Shaft: 3mm diameter D-shaped, 9mm long\n\nGearbox Cross-Section: 10 × 12mm\n\nBrush Type: Carbon (long-life)\n\n\n\nNote: HPCB motor terminals are copper-coloured, 2mm wide, and spaced 6mm apart — slightly different from precious metal brush versions (1.5mm wide, 7mm apart). Stall torque and current values are theoretical; sustained stalls can damage the motor or gearbox.\n\n\nIdeal For\n\nSmall robot drives and chassis\nMechanisms requiring moderate speed and torque\n12V battery-powered mobile projects\nApplications needing extended motor life (carbon brushes)\n\n\nPackage Contents\n\n1× 50:1 Micro Metal Gearmotor HPCB 12V\n","vendor":"Pololu","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":13465,"title":"Default Title","sku":"PL-3039","price":48.95,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":2,"option1":"Default Title"}]}