The 40BB17 sprocket is a 17 tooth idler sprocket that works with any #40 ANSI roller chain. Idler sprockets use a sealed ball bearing that has a wide inner race. These idler sprockets can be fixed to a stationary shaft or the can be mounted to a sprocket tensioner arm. Our 40BB17H idler sprocket has hardened teeth to help minimize wear.
40BB17 1/2" Idler Sprocket Dimensions
ANSI Chain Size:40
Outside Diameter (de):2.975''
Length Thru Bore (LTB):11/16''
Made In USA
All idler sprockets are manufactured in America.
Teeth are hardened for better wear protection during service.
After the bearings are pressed into the sprocket, they're put through a riveting process to ensure the bearing stays securely inside the sprocket
Bearing are sealed to keep grease in and to keep abrasive materials out.