Black Pinion Gear Case (RPM80412)

The Pinion Gear Case is designed to protect small pinions from nicks that can damage plastic spur gears. It keeps each pinion on its own post and closes with a snap-on lid, so there’s no need to tighten a set screw to hold the pinions in place.

The kit includes a peel-off decal sheet with two pinion-to-gear ratio charts for 48- and 64-pitch gears. The appropriate chart fits into a recessed area on the bottom of the case, and the decal sheet provides numbered squares from 14 to 31 to label the gears on the inside, plus ten blank squares for custom entries. Available in black or translucent blue.