A cone crusher may include a crushing cone held on a driven eccentric bushing. The eccentric bushing may rotate in a radial direction about a spindle. The spindle may be fixedly clamped in a spindle receptacle provided in a housing lower part. The spindle may comprise a cylindrical upper bearing portion that is braced in a bore that forms the spindle receptacle by way of an upper mechanical clamping device.

A crusher is disclosed having a rotatable eccentric, a main shaft supported to the eccentric, a piston for adjusting the vertical position of the main shaft and an axial thrust bearing between the lower end of the main shaft and the piston. The thrust bearing has an upper bearing attached to the lower end of the main shaft, a lower bearing attached to the piston, and a pressure plate between the upper bearing and the lower bearing. A circular groove or expansion is formed onto the pressure plate. A releasing member is attached to a crusher structure outside of the pressure plate. The releasing member has a circular lip directed to the direction of the pressure plate. Part of the lip is in the groove or above the part of the extension. The releasing member is attached to the piston.

A crusher is disclosed having a rotatable eccentric, a main shaft supported to the eccentric, a piston for adjusting the vertical position of the main shaft and an axial thrust bearing between the lower end of the main shaft and the piston. The thrust bearing has an upper bearing attached to the lower end of the main shaft, a lower bearing attached to the piston, and a pressure plate between the upper bearing and the lower bearing. A circular groove or expansion is formed onto the pressure plate. A releasing member is attached to a crusher structure outside of the pressure plate. The releasing member has a circular lip directed to the direction of the pressure plate. Part of the lip is in the groove or above the part of the extension. The releasing member is attached to the piston.

A head nut assembly for securing a mantle on a mainshaft of a gyratory crusher and a gyratory crusher. The head nut assembly includes a cylindrical threaded part and a locking mechanism. The locking mechanism is arranged to engage with the threaded part. The mainshaft has an elongate body and an intermediate portion arranged on the elongate body. A mantle is secured on the mainshaft, the mantle being arranged to form a crushing chamber of the gyratory crusher. The head nut assembly is arranged to secure the mantle on the intermediate portion of the mainshaft.

Inertia cone crusher for crushing materials includes a body with an outer cone and an inner cone arranged inside, on whose drive shaft an unbalance weight is provided with the aid of a slide bushing and connected via a transmission disk coupling to a combined moving dynamic assembly comprising a counterbalance weight and a counterbalance weight slide bushing, the assembly connected to a gear transmission and a motor, and has an improved plain journal bearing. The plain bearing is installed between the flange and the counterbalance weight, bearing the load from the crusher's moving part, and includes a base ring and an upper ring, the base ring having a spherical bottom surface and its mating recess on the flange's top surface. The bearing enables the moving dynamic assembly's rotation around the axis, using a hydrodynamic sliding mode, with radial oil slots additionally provided on top surface of the base ring.

Inertia cone crusher for crushing materials includes a body with an outer cone and an inner cone arranged inside, on whose drive shaft an unbalance weight is provided with the aid of a slide bushing and connected via a transmission disk coupling to a combined moving dynamic assembly comprising a counterbalance weight and a counterbalance weight slide bushing, the assembly connected to a gear transmission and a motor, and has an improved plain journal bearing. The plain bearing is installed between the flange and the counterbalance weight, bearing the load from the crusher's moving part, and includes a base ring and an upper ring, the base ring having a spherical bottom surface and its mating recess on the flange's top surface. The bearing enables the moving dynamic assembly's rotation around the axis, using a hydrodynamic sliding mode, with radial oil slots additionally provided on top surface of the base ring.

A gyratory crusher topshell and topshell assembly including an outer crushing shell and optional intermediate spacer ring. The topshell has a radially inward facing surface that is divided into a plurality of regions including an upper and lower mount region axially separated by an intermediate annular rib. The rib enables the topshell to be compatible with a variety of different sized and shaped concaves optionally using an intermediate spacer ring without the need for a backing compound.

A gyratory crusher topshell and topshell assembly including an outer crushing shell and optional intermediate spacer ring. The topshell has a radially inward facing surface that is divided into a plurality of regions including an upper and lower mount region axially separated by an intermediate annular rib. The rib enables the topshell to be compatible with a variety of different sized and shaped concaves optionally using an intermediate spacer ring without the need for a backing compound.

A gyratory crusher includes an eccentric having an inner slide bearing surface and an outer slide bearing surface, the inner slide bearing surface defining, together with an opposing slide bearing surface, an inner slide bearing. The outer slide bearing surface defines, together with another opposing slide bearing surface, an outer slide bearing. The eccentric is rotatably connected to a crusher frame so as to allow a rotation about an eccentric axis of rotation, which is fixed relative to the frame. The eccentric axis of rotation is defined by one of the inner and outer slide bearings. The inner slide bearing has a total height-to-diameter quotient (H1/D1) of less than 1.0.

A gyratory crusher includes an eccentric having an inner slide bearing surface and an outer slide bearing surface, the inner slide bearing surface defining, together with an opposing slide bearing surface, an inner slide bearing. The outer slide bearing surface defines, together with another opposing slide bearing surface, an outer slide bearing. The eccentric is rotatably connected to a crusher frame so as to allow a rotation about an eccentric axis of rotation, which is fixed relative to the frame. The eccentric axis of rotation is defined by one of the inner and outer slide bearings. The inner slide bearing has a total height-to-diameter quotient (H1/D1) of less than 1.0.