Hand Fine Spur Gear (equivalent to original Polar 218631). This 12 tooth gear is used in the backgauge hand fine adjustment mechanism on Polar 72 EL, Polar 72 CE, and Polar Power Max guillotine paper cutters, after machine serial number 4551001.

The teeth are curved round "lobes", not conventional gear teeth.

It's outside diameter measures 2.97" (75.5 mm). Its overall width is approximately 1.57" (40 mm). It has a 19 mm diameter bore (.75"), and a 6 mm wide keyway. This gear is machined from delrin and it mates with our pinion gear, our part number G36050.