Importance

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Abstract

A backing assembly for a Z-mill includes an elongated backing shaft having a number of longitudinally spaced bearing support surfaces configured to rotatably support cylindrical roller bearings thereon. The backing shaft is rotatably secured to a Z-mill housing by saddle assemblies which support the backing shaft in vertical movement along a generally eccentric path. A series of lubricant feed channels are formed along the interior of the shaft, and permit the flow of bearing lubricating fluid to each bearing support surface. The lubricant supply assembly is provided to supply an air/oil lubricating fluid mixture under pressure into the feed channels. The lubricant supply channel includes a supply manifold having internal valving to regulate the volume and timing of gas and oil flow therethrough, and a bearing plate having lubricant outlet ports. The bearing plate is resiliently biased into juxtaposed abutting contact with channel inlets formed in an end of the backing shaft, with the outlet ports and channel inlets having complementary shapes selected to maintain at least partial fluidic contact therebetween, as the end of the backing shaft moves eccentrically.

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First Claim