Greasable Disc Bearing, For P30942 Gang Bearing Kit Used With JD100 Flange Set. Fits John Deere Model 315, 335, 355, 375, 635 discs; 637 with C spring bearing hangers; 640, 650, 670 discs. Also fits 310, 330, 331, 340, 350, 360 and 370 discs updated to Dura-Flex® bearings and flanges. Fits 510 and 512 Disc Ripper. Fits standard disc gang assembly on Great Plains and Kent Turbo-Till 1000TT, 1200TT, 1700TT, 2200TT, 3000TT, and 4000TT. Replaces OEM# AA28186, GW211PPB20