Product Description Factory Price Square Flange Mounted Spur Planetary Gear Reducer Nickel chromium molybdenum alloy steel gear is manufactured with carburizing heat treatment for high abrasion resistance and impact toughness and by honing process to increase gear precision and low noise operation.Internal gear bore uses needle roller to obtain higher abrasion resistance and strength. Product … Continue reading China high quality Factory Price Square Flange Mounted Spur Planetary Gearbox with Good quality