YB30-5/8 Steel Spur Gear 2.43" ID the teeth are cut into

the teeth are cut into the inside diameter while the outside diameter is kept smooth

Can be mounted vertically or horizontally

Material: Bronze

with internal gears

Number of Threads: Double Thread

YB30-5/8 Steel Spur Gear 2.43" ID the teeth are cut intoBoston 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