Disc for Polar Knife Change, 274583, 061284, M655
This disc is part of the knife change device on Polar Cutter models 115, 137, 155 and 176. The original Polar part number is 274583, and 061284. Also included with the disc is a replacement Socket Head Cap Screw, Polar part number 203403, or 451642.
These disc rings are the revised versions with fine pitch screw threads, and a fine pitch thread on the bolt.
For this same disc, with a bevel cut for paper clearance (used in smaller Polar Models) see our part number M654.
This disc also replaces Polar part number 276458, which fits the Polar 78E model paper cutters, but not the Polar 78X models.