All Boston Gear change gears are manufactured with a double key to accept the compound steel bushings that connect two gears together
Click here for spec sheet: SUCNPP Spec Sheet
the SNASPA has an eccentric locking bearing insert
Click here for spec sheets: SUCNPFL Spec Sheet
YK140B Cast Iron Spur Gear Set Screw Locking All Boston Gear change gearsBoston 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