ND120 Cast Iron Spur Gear 4-1/2" ID Boston Gear spur gears are

Boston Gear spur gears are designed to transmit motion and power between parallel shafts

Note: Because the efficiency of a worm gear drive depends on the lead angle and number of starts on the worm

Bearing insert with 2 set screws has longer inner race for added load support

An instruction bulletin on mounting and hookup are included with each brake

ND120 Cast Iron Spur Gear 4-1/2" ID Boston Gear spur gears areBoston Gear spur gears are designed to transmit motion and power between parallel shafts. The different styles offered include spur, gear rack, pinion wire, stem pinions, and internal gears, and most come with a selection of bore diameters, keyways, and setscrews to accommodate a wide variety of application requirements. They are available in plastic, non metallic, brass, steel, and cast iron and are manufactured in a variety of styles, including