Abstract: A method performed by a Baseband Unit, BBU, for assisting a Radio Unit, RU, to perform beamforming for a communication between a User Equipment, UE, and a base station in a wireless communications network using a multiple antenna system for is provided. The BBU and the RU are associated with the base station. The BBU obtains (302) channel taps related to a number of subcarriers. The BBU selects (303) a subset of the channel taps. The BBU sends (304) to the RU, the selected subset of the channel taps and information identifying the selected subset of channel taps. The selected subset of channel taps and information identifying the selected subset of channel taps assists the RU to perform beamforming for the communication between the UE and the base station.

Abstract: A gyratory crusher includes a crushing head, which is arranged rotatably on a substantially vertical shaft and on which a first crushing shell is mounted, and a frame, on which a second crushing shell is mounted, which second crushing shell, together with the first crushing shell, delimits a crushing gap. A supporting piston is arranged inside a cavity of the shaft, which supporting piston is displaceable in the vertical direction in order to adjust the width of the crushing gap. An eccentric is, by means of at least one radial bearing, arranged rotatably about the shaft. The gyratory crusher has an oil line, arranged in the cavity and extending through a piston plate included in the supporting piston, for supplying lubricating oil to a lubricating oil chamber configured at least partially in the cavity above the piston plate, the lubricating oil chamber being connected to the radial bearing by a duct arranged in the shaft.