Martin's MXT® bushings are available from stock to fit all popular pulley sizes. Martin stocks MXT® bushings in a wide range of bore sizes per hub. The MXT® bushing offers a 2 in/ft taper, which reduces end disc pre-stressing, as well as increasing clamping force. All bushings size 50 and larger feature full depth keys. Martin MXT® Conveyor Bushing, 2-15/16 in Bore Dia, 5.313 in Barrel Dia, 7.563 in Hub Dia, 6-1/8 in Bolt Circle, 7/8 in Flange Thickness, 4 Bolt Holes, 9/16 x 2 in Screw, For Use With: MXTH-40 XT Hub, 2-13/16 in Overall Length, 1 x 3/8 in Keyway, Cast Iron