Product Description Worm Geared Brake Brushless Dc Motor 200w 300w 400w 60mm Bldc Motor 48v Nema24 Gearbox 1)Product Description: 1°size:Diameter 76mm 2°lifespan:5000 hours 3°gear material: plastic or brass 4°IP rate:IP54 2)Complete... The new goods include a collection of higher-tech and large high quality chains and sprockets and gears, this sort of as chains and gearboxes for agricultural machineries, metallurgical chains, escalator action-chains, high-speed tooth chains, timing chains,... 