Abstract: A gyratory crusher bearing arranged for carrying a crushing head of a gyratory crusher having an inner crushing shell supported by the crushing head, and an outer crushing shell supported on a crusher frame. The gyratory crusher bearing includes a lubricant supply channel and a lubricant drainage channel. At least one of the lubricant supply channel and the lubricant drainage channel is arranged for housing a combined mounting and lubricant passage bolt holding the gyratory crusher bearing to a bearing support arranged on the crusher frame of the gyratory crusher.

Abstract: A gyratory crusher bearing arranged for carrying a crushing head of a gyratory crusher having an inner crushing shell supported by the crushing head, and an outer crushing shell supported on a crusher frame. The gyratory crusher bearing includes a lubricant supply channel and a lubricant drainage channel. At least one of the lubricant supply channel and the lubricant drainage channel is arranged for housing a combined mounting and lubricant passage bolt holding the gyratory crusher bearing to a bearing support arranged on the crusher frame of the gyratory crusher.

Abstract: The present invention relates to a corrosion resistant magnesium alloy which can be prepared with a justifiable expenditure of energy from scrap or impure copper containing precursors and displays a ductility such that it can be used as a casting or kneading material. The magnesium alloy contains, relative to the total weight of the magnesium alloy, 1 to 9 wt. % aluminium, 0.6 to 6 wt. % zinc, 0.1 to 2 wt. % manganese, 0 to 2 wt. % rare earth elements, 0.5 to 2 wt. % copper, wherein the weight ratio of aluminium to zinc lies in the range from 1:1 to 2:1.