ROTARY DECK BUSHING Essentially the Foremost Rotary Deck Bushing is a two piece bearing assembly which replaces the friction or non-rotating bushing which sits in the deck of a blast hole drill. The inner bearing race of the rotary bushing will rotate with the drill steel when sufficient surface contact is made by the rotating drill steel as it passes through the center bore of the bushing. The outer race of the bushing is held stationary in the deck of the drill by means of locating flats and or lugs which are positioned on the circumference of the flange that is integral with the outer race. The flange supports the bushing assembly in the deck hole which maintains the central position with the drill steel. LESS FRICTION. REDUCED MAINTENANCE. INCREASED PRODUCTION.

ROTARY DECK BUSHING OUTER BEARING RACE ANTI-ROTATION SLOTS 2 OR 3 BEARING RACES INNER BEARING RACE CHROME MOLYBDENUM BALL BEARINGS CUTTINGS DEFLECTOR Typically the life and over-all performance of a rotary deck bushing is similar to that of a tricone bit. The factors which impact the running life of these two products are basically the same. The deck bushing will outlast the tricone when it comes down to individual product life. The longevity of each bushing may vary from one area of a mining operation to another. This depends on the drilling conditions and other factors listed below just as...