Abstract: A cone or gyratory crusher, including a slip ring, a crusher head, and a first sealing member, arranged between the slip ring and the crusher head, defining a first space above the first sealing member. A first flexible member is connected to the first sealing member and defines a second space below the first sealing member.

Abstract: A method and apparatus for counteracting spin of the crusher head on cone or gyratory crushers is provided. An annular rubber muscle element is secured relative to said bowl frame and positioned between the bowl frame and a surface of the head, and which can be selectively placed into contact under pressure with the surface of the head to prevent spin during start up but which is then released during normal crushing operation.

Abstract: The present disclosure provides a generally cylindrical bowl support for a cone crusher which includes a plurality of evenly, circumferentially spaced ears around the periphery of the support. The ears are designed to have clamping cylinders mounted thereto to provide protection from tramp iron and the like passing through the cone crusher. A plurality of thickened ribs are defined in the support, at least some of the thickened ribs extending downwardly from the ears to form abutting polygon configurations to spread and absorb forces from a crushing operation. Other ones of the ribs define at least one circumferentially-extending, continuous ring forming portions of the polygons.

Abstract: 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.

Abstract: A gyratory crusher includes an inner and an outer crushing shell. The outer crushing shell has three regions along its axial length including: an inlet region that tapers radially inward from an uppermost first end; a crushing region that extends radially inward from a second lowermost end; and a radially innermost shoulder region that is positioned axially between the inlet and crushing regions. An angle of inclination of a radially inward facing surface at the inlet and shoulder regions and the axial length of the crushing surface are designed to optimize crushing capacity in addition maximizing reduction.

Abstract: A gyratory crusher outer crushing shell and a crushing shell assembly. The crushing shell includes a radially inward facing crushing surface and a radially outward facing mount surface provided with radially outward projecting contact regions to contact the topshell or an intermediate spacer ring. A ledge or groove providing an abutment face is positioned at or axially above the upper contact region to positionally support a sealing ring for positioning between the crushing shell and the topshell or intermediate spacer ring.

Abstract: A gyratory crusher main shaft sleeve friction fit over an uppermost end of a crusher main shaft. The sleeve includes an elongate axial wall for being positioned in contact with an outward facing surface of the main shaft. The axial wall has a thickness that decreases in a direction from a second upper end to a first lower end, wherein the internal facing surface of the sleeve extends transverse to a longitudinal axis of the sleeve so as to taper inwardly towards the axis in a direction from the first to the second end.

Abstract: A method for at least partly emptying a crushing chamber formed between an inner crushing shell and an outer crushing shell of an inertia cone crusher is provided. The inner crushing shell is supported on a crushing head. A central axis of the crushing head gyrates about a gyration axis with an rpm, for crushing material in the crushing chamber. The method includes the steps of interrupting the feeding of material to the crusher; measuring, directly or indirectly, at least one of a position and a motion of the crushing head during an amplitude control period; comparing the measured position and/or motion with at least one set point value; determining, based on the comparison, the measured position and/or motion to at least one set point value, whether the rpm should be adjusted; and adjusting the rpm when necessary.

Abstract: A ratchet assembly for multi-dimensional movement and placement of a retractor blade includes a retractor blade holder, a housing member, a rotating indexer and a self-retaining locking mechanism. The retractor blade holder is shaped and dimensioned to receive a stem of a retractor blade and includes a locking mechanism that enables selective lateral adjustment of the retractor blade relative to the retractor blade holder. The retractor blade holder is mated to the housing member and is vertically pivotable with respect to the housing member to enable selective vertical pivoting adjustment of the retractor blade relative to the housing member. The rotating indexer is mated to the housing member, and the housing member is rotatable with respect to the rotating indexer so that the retractor blade holder, the housing member and the retractor blade are able to selectively rotate about the longitudinal axis of the rotating indexer.

Abstract: A parabolic vibratory impact mill is proposed which comprises a housing having an outer cone, an inner cone and a power-operated vibrator. The shells of the cones have working surfaces in the form of parabolic generatrices: in the bottom part, the concavity of the parabolae is oriented toward the axis of the mill; in the top part, the convexity of the parabolae is oriented toward the axis of the mill. Conditions are created for the autogenous grinding of large pieces in the top part and small pieces in the bottom part, wherein the material partially decelerates in the transition region between the top parabolae and the bottom parabolae, providing for the metered feeding of the bottom region. The advantageous vertical distribution of the load in the grinding chamber provides a grinding ratio of 30 with little wear on the shells and low energy expenditure.

Abstract: The fastening of a mantel to a head of a cone crusher with a fastening device. A first part of the fastening device is fastened to the head of the cone crusher. A second part of the fastening device is situated against the mantel and the second part is forced towards the first part with a tightening means.

Abstract: The anti-spin system is applied to a cone crusher having a structure (10) carrying an upper housing (20) and a vertical axle (30); an eccentric element (40) to be rotated around the vertical axle (30); and a cone head (60) disposed inside the upper housing (20) and being axially and rotatively supported on the structure (10) and radially supported around the eccentric element (40). The anti-spin system comprises a braking bush (70) carried by the cone head (60) or by the structure (10), and an annular shoe (80) carried by the other of said parts, which are pressed against each other, by action of the inertial centrifugal force acting on the cone head (60), upon “no-load” operation of the crusher, to generate a friction force opposite and superior to that generated between the cone head (60) and the eccentric element (40) and to prevent the latter from rotatively dragging the cone head (60).

Abstract: A gyratory crusher includes a frame and a crushing head which is arranged rotatably about a substantially vertical shaft. The frame has an upper frame portion and a lower frame portion. The lower frame portion includes a hub. The hub has a centralized arranged through hole with a center axis extending through the hole and the hub. The hole is arranged to cooperate with the shaft being rotatably arranged in the hole. The hub is connected by arms to the lower frame portion and includes a drive ring pocket.

Abstract: A cylindrical, hollow piston for a gyratory crusher includes a piston wall, a piston top and a piston bottom. The piston wall includes at least one opening leading into an inner chamber of the hollow piston. The piston wall has an outer sliding surface and an inner chamber surface.

Abstract: A gyratory crusher, including an outer crushing shell and an inner crushing shell forming between them a crushing chamber, the crushing chamber communicating with a discharge zone that forwards crushed material from the crushing chamber and out of the crusher. The inner crushing shell is supported on a crushing head. The outer crushing shell is supported on a crusher frame. At least one sealing arrangement is between the discharge zone and a working part zone in which at least one bearing for the crushing head to perform a gyratory movement relative to the crusher frame is arranged. The sealing arrangement includes a sealing surface, and a sealing member arranged to seal against the sealing surface and including an inner circumferential flexible sealing lip, an outer circumferential flexible sealing lip and at least one inlet for pressurized fluid to be supplied to an overpressure zone arranged between the inner and outer sealing lips and the sealing surface.

Abstract: A gyratory cone crusher 10 includes a support frame 12 having a vertical axis X and a receiving formation 14 mounted rigidly in the frame 12, a central vertical axis of the receiving formation 14 being in line with vertical axis X. A crushing head 16 is slideably engaged with the receiving formation 14 and has a first, upwardly presented conical crushing surface 18. A crushing bowl 20 having a second, downwardly presented funnel-shaped second crushing surface 22 spaced apart from the first crushing surface 18 is mounted above the crushing head 16. The crushing bowl 20 is mounted in an eccentric housing 24 so that a central axis Z of the crushing bowl 20 is positioned at an angle oblique to vertical axis X.

Abstract: A vibrating cone crusher is capable of crushing rigid raw materials such as rocks and has a base, a bowl assembly, a transmission assembly, an inertial transmission mechanism and a head assembly. The bowl assembly is capable of vibrating and swaying. The head assembly is capable of rotating eccentrically. When operating, the vibrating or swaying bowl assembly cooperates with the eccentrically rotating head assembly to effectively crush raw materials that are installed in the vibrating cone crusher.

Abstract: A gearbox assembly for a gyratory crusher and/or cone crusher, which includes a drive shaft having a rotational movement, and a drive shaft gear attached to a distal end of the drive shaft. The drive shaft gear imparts a rotational movement of the drive shaft to a first gearing assembly, the first gearing assembly imparting a second rotational movement to a second gearing assembly, the second gearing assembly imparting a third rotational movement of the second gearing assembly to drive a ring gear, and wherein the ring gear is attached to and rotates an eccentric assembly of the gyratory crusher and/or cone crusher. The cone crusher is preferably configured to crush rock, stone, ore or minerals. A method of making or retrofitting a crushing device such as, for example, a cone crusher or other gyratory crusher, is also provided.

Abstract: The apparatus is a gyratory crusher in which all the wear parts can be removed and replaced from the top of the crusher, thus eliminating the need to remove large, heavy parts from below the crusher. This is accomplished by constructing the crusher so that the eccentric and the piston assembly can be lifted up and out sequentially. The piston assembly then includes all the wear parts within the lowest assembly, the hydraulic support, so that those parts can be replaced without access to the underside of the crusher. If necessary, the hydraulic support within which the piston assembly is held can also be removed from above the crusher.

Abstract: A cone crusher includes a stationary main shaft and an eccentric that rotates about the main shaft to cause gyrational movement of a head assembly to crush rock within a crushing gap. The cone crusher includes a lower head bushing in contact with an outer surface of the eccentric. The eccentric is formed with a contact pad to enhance the contact between the eccentric and the lower head bushing during a no-load condition. The contact pad includes a contact surface that is recessed from the outer surface of the eccentric to enhance contact during no-load conditions while maintaining full contact between the lower head bushing and the eccentric outer surface during full load, crushing conditions.

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.

Abstract: A crushing apparatus has a gyratory crusher, which has an inner shell, an outer shell and an eccentric. A lubricating system is arranged to conduct a lubricant to at least one movable part, such as the eccentric of the gyratory crusher. The lubricating system has an oil sump, which collects the lubricant after it has been used for lubrication of the movable part, and a valve mechanism, which is arranged to apportion a lubricant flow in the crusher. The valve mechanism is arranged to assume a first position, in which a first sub-volume of the lubricant flow is conducted directly to the movable part for lubrication of the same and a second sub-volume is conducted directly to the oil sump, the second sub-volume constituting from about 30 to about 100% of the lubricant flow, and a second position, in which at least about 90% of the lubricant flow is conducted to the movable part for lubrication of the same.

Abstract: A gyratory crusher has a crushing head fixedly attached to an upper portion of a substantially vertical shaft, on which crushing head a first crushing shell is mounted, and a frame on which a second crushing shell is mounted. The second crushing shell defines, together with the first crushing shell, a crushing gap. The gyratory crusher has a space adapted to contain liquid. The space is defined by a piston, which is formed at least partly of the lower end of the shaft, a cylinder, which is formed at least partly in an eccentric assembly, and a bottom element. The space is adapted to form a cushion with the aid of the liquid, so that the cushion can serve as a thrust bearing transmitting vertical forces from the crushing head to the bottom element.

Abstract: A conical rock crusher, such as a conical cone or gyratory crusher incorporating at least one oil deflection plate serving to redirect oil from exiting the crusher thereby to reducing oil loss.

Abstract: A crushing chamber is formed between a concave liner and a mantle liner. The concave liner has a first area surface having a length of T to ?2T; a second and a third area surface; which surfaces are gradually inclined from the side of the inlet for the crushing chamber. The mantle liner has a first tapered surface having a length of greater than T, a cross angle of less than 20° and an inclination angle of greater than 60°; a second tapered surface having a length of greater than 0.5T and a cross angle of 5° to 10°; and a third tapered surface having an inclination angle of 45° to 50°. The area surfaces as well as the tapered surfaces are continuously arranged in a curvilinear manner. The shapes enhance the throughput of goods in a good fine-crushing performance, reducing the uneven abrasion due to the action.

Abstract: The head nut assembly for gyratory crusher which includes a shaft having a lower portion, a tapered middle portion and a threaded upper portion. The threaded upper portion extends above the tapered portion. A mantle encompasses the middle tapered portion and has a correspondingly tapered internal side. The internal side is in generally continuous supportive engagement with the shaft middle portion. The mantle additionally has an upper side. A head nut is threadably secured to the upper portion of the shaft. The head nut has a lower face, where at least one bore extends upwardly into the lower face. An annular ring is disposed around the shaft between the mantle and the head nut. The ring has a lower surface coupled with the upper side of the mantle so as to prevent relative rotational movement between the mantle and the ring. An upper surface on the ring is contiguous with the lower face of the head nut. At least one key is disposed between the head nut and the annular ring.

Abstract: A crusher comprises a main shaft a portion of which is disposed in a bore of a rotatable eccentric shaft, the main shaft (1) having a central axis that is inclined with respect to the axis of rotation of the eccentric shaft, and a first crushing head attached to the main shaft and rotatable by the main shaft with respect to a second crushing head so that constrained stroke motion is effected between the first crushing head and the second crushing head. The inclination of the central axis of the main shaft is changed with respect to the axis of rotation of the eccentric shaft by a gear transmission comprising cog wheels, such that the magnitude of the constrained stroke motion changes.

Abstract: The machine is comprised of a main body (32), a bonnet (14) which rests on the upper frame of the main body (32) and a concave holder (66) threadably inserted into the bonnet (14). The bonnet (14) is maintained in intimate contact with the main body (32) by means of a plurality of tramp iron cylinders (18) while the concave holder (66) is screwed into the bonnet (14) by means of an adjusting gear (16) and matching pinion (58). The concave holder (66) is locked in position within the bonnet (14) by means of a plurality of locking cylinders (60) positively engaging a locking slide ring (64). A mantle (70) covered male conical member (28) is driven by a crown gear (36) and pinion (52) in an elliptical rotation within the confines of a concave die (68) thus crushing the raw rock on each near pass.

Abstract: An improved main shaft and assembly for a coal pulverizer having a circumferential groove at a predetermined location on the main shaft and in the yoke bushing to provide improved fretting resistance to reduce the occurrence of main shaft failure.

Abstract: The head nut assembly for gyratory crusher which includes a shaft having a lower portion, a tapered middle portion and a threaded upper portion. The threaded upper portion extends above the tapered portion. A mantle encompasses the middle tapered portion and has a correspondingly tapered internal side. The internal side is in generally continuous supportive engagement with the shaft middle portion. The mantle additionally has an upper side. A head nut is threadably secured to the upper portion of the shaft. The head nut has a lower face, where at least one bore extends upwardly into the lower face. An annular ring is disposed around the shaft between the mantle and the head nut. The ring has a lower surface coupled with the upper side of the mantle so as to prevent relative rotational movement between the mantle and the ring. An upper surface on the ring is contiguous with the lower face of the head nut. At least one key is disposed between the head nut and the annular ring.

Abstract: An eccentric cone crusher having multiple counterweights. More particularly, the present invention provides a cone crusher including a frame, a crusher head for eccentric rotation about an axis, an eccentric member supporting the crusher head and having a center of gravity off the axis of eccentric rotation, and at least two counterweights attached to the eccentric. Utilizing more than one counterweight permits greater flexibility in positioning the counterweights, and minimizes moments and other stresses on the apparatus.

Abstract: A cone crusher having a crusher head assembly including a crusher head having a cone-shaped surface and an underside opposite the cone-shaped surface, the underside having an annular socket engagement surface, a one-piece frame including a peripheral portion and a central portion, the central portion having a wall forming a socket having an upper edge providing a continuous annular head support surface engaged with the socket engagement surface, the upper edge of the wall defining an opening, the wall defining a socket bore extending from the opening into the central portion, the central portion having a hub located within the socket and extending into the socket bore; and an eccentric assembly supported on the hub, the eccentric assembly including an eccentric member engaged with the crusher head assembly and including a ring gear fixed to said eccentric member, the ring gear being housed by the socket bore in a position surrounding the hub, the gear ring being removable through the opening.

Abstract: A gyratory crusher having a positive head hold-down mechanism. The crusher includes a frame structure; a first mounting arrangement including a pair of taper bearings for rotatably mounting an eccentric member to the frame structure about a vertically oriented first axis; a second mounting arrangement including a spherical bearing for spiderlessly and rotatably mounting a main shaft to the eccentric member about a substantially vertically oriented second axis angularly offset from the first axis; a crusher head mounted on said main shaft; drive means including a bevel gear secured to the eccentric member and a drive pinion arrangement for rotating said eccentric member about the first axis; a hold-down mechanism fixedly mounted to the crusher head for preventing vertical displacement of the crusher head relative to the a plurality of hydrostatic bearings operably supporting the crusher head; and seal means for protecting moving components of the crusher.

Abstract: A gyratory crusher includes an anti-spin mechanism which is coupled to a lower end of a main shaft of the crusher and which prevents the main shaft and associated crushing head from spinning when the crusher is not subject to a crushing load. The anti-spin mechanism includes 1) a hydraulic brake, and 2) a gear train which couples the main shaft to the hydraulic brake so as to drive the hydraulic brake to rotate faster than the main shaft while at the same time permitting relative sliding motion between the main shaft and the hydraulic brake without unduly increasing the complexity or height of the crusher. The hydraulic brake is supercharged so as to respond immediately to a tendency of the main shaft to spin. As a result, only relatively low braking forces are required to prevent spinning.

Abstract: A gyratory crusher includes a frame, a bonnet, a gyratory crusher head, supported by the frame and being spaced relative to the bonnet such that a crushing chamber is formed therebetween, and a hydraulic channel formed integrally within the frame. First and second hydraulic cylinders are attached to the frame and support the bonnet on the frame, and the first and second hydraulic cylinders are connected to the hydraulic channel so as to be in hydraulic communication therewith. First and second hydraulic accumulators are supported by the frame and are in hydraulic communication with the hydraulic channel and the hydraulic cylinders. The hydraulic accumulators and the hydraulic channel are arranged to allow uncrushable material to automatically pass through the crushing chamber.

Abstract: A self tightening mantle retention assembly for a conical crusher. The self tightening assembly includes a locking bolt or nut provided with external threads for engaging in internally threaded bore in the head of the crusher. The locking bolt is provided with a central bore for receiving a central bolt, the threads of which engage an internally threaded aperture formed in the head or a block secured to the upper bearing supporting the head to apply a further compressive force to the locking bolt. The threaded engagement between the locking bolt and the head and between the bolt threads and the threaded aperture in which they are received, are formed such that the torque applied to the locking bolt by the crushing action on the mandel tends to further tighten the locking bolt to secure the mantle on the head of the crusher.

Abstract: A conical crusher having a rigidly supported outer frustoconically shaped crushing member and an inner conical crushing member supported on a wobble mechanism which is in turn supported by air bellows. The air pressure in the air bellows is regulated to adjust the spacing between the inner and outer crushing members, and therefore the particle size of the crushed material. The inner and outer crushing members are readily replaceable. The outer crushing member is a single piece bowl/bowl liner component.

Abstract: A gyratory crusher for crushing material having a frame with a lower frame portion; a crusher head; a mounting mechanism for pivotally and gyrationally mounting the crusher head: and a thermal relief system for operably transferring thermal energy from the mounting mechanism to the lower frame portion, wherein the thermal relief system includes at least one collar in thermal communication with the lower frame portion and a self-contained circulating system configured to operatively circulate coolant through the at least one collar. The thermal relief system may be configured to operatively provide a cooling system for cooling lubricant being used to lubricate the mounting mechanism. The coolant may be a lubricant such that the self-contained circulating system may be configured to operatively circulate the lubricant simultaneously through the thermal relief system and the mounting mechanism.

Abstract: A conical crusher having a rigidly supported outer frustoconically shaped crushing member and an inner conical crushing member supported on a wobble mechanism which is in turn supported by air bellows. The air pressure in the air bellows is regulated to adjust the spacing between the inner and outer crushing members, and therefore the particle size of the crushed material. The inner and outer crushing members are readily replaceable. The inner crushing member serves as a single piece crushing head/mantle attachment.

Abstract: A conical crusher having a rigidly supported outer frustoconically shaped crushing member and an inner conical crushing member supported on a wobble mechanism which is in turn supported by air bellows. The air pressure in the air bellows is regulated to adjust the spacing between the inner and outer crushing members, and therefore the particle size of the crushed material. The inner and outer crushing members are readily replaceable.

Abstract: A gyratory crusher includes an anti-spin mechanism which couples a lower end of the eccentric shaft of the crusher to the stationary frame of the crusher so as to prevent the eccentric shaft and associated crushing head from spinning when the crusher is not subject to a crushing load. The anti-spin mechanism includes 1) a gear train preferably formed from two sets of intermeshing gears, and 2) a torque limiter which is coupled to the gear train and which releases upon the imposition of a crushing load on the crusher so as to permit relatively slow rotation of the eccentric and crushing head counter to the direction of rotation of the main drive gear or bull gear.

Abstract: A gyratory crusher includes a flexible dust seal having an outer edge attached to a cone head of the crusher and to an outer of a ball-bearing seal, an inner race of which is attached to a mounting arrangement for rotationally mounting an eccentric member about a crusher axis with a pair of taper bearings and for rotationally mounting the cone head about a cone head axis offset from the crusher axis. The cone head is also mounted on a plurality of hydrostatic bearings. A mantel of the crusher is attached to the cone head by a removable cap nut and mantel stud. The crusher includes a self-contained lubricating system and a hydraulic tramp iron relief system with connections contained internally within structure of a lower frame portion of the crusher. The crusher includes a drive gear centered about the crusher axis and attached directly to the eccentric member.

Abstract: A gyratory crusher includes a frame structure; an eccentric member rotatably mounted to the frame structure about a first axis; a main shaft rotatably mounted to the eccentric member about a second axis angularly offset from the first axis; a crusher head mounted to the main shaft and supported by a plurality of hydrostatic bearings, mounted on the frame structure in abutting engagement with the crusher head; a first drive mechanism for rotating the eccentric member about the first axis; and a stroke adjusting mechanism having an outer race continuously and dynamically rotatable about a third axis, angularly offset from both the first and second axes, for adjusting the angular offset of the second axis relative to the first axis. A hydraulic drive mechanism, including a hydraulic motor and a rotary hydraulic connector, distribution lines and ports, for distributing pressurized hydraulic fluid to the hydraulic motor, is provided for rotating the outer race relative to the eccentric member about the third axis.

Abstract: The invention is a crusher having a fixed crusher member and a vertically reciprocating crusher member. Reciprocation of the crusher member is achieved by a pivoting arm located beneath the crusher member which is preferably driven by a toggle mechanism located to one side of the crusher.

Abstract: A cone crusher having a lower frame assembly and upper bowl assembly is provided with hold-down cylinders arranged in pairs which are oppositely inclined to counteract a rotational impact forces imparted to the upper bowl assembly. Additionally, the hold-down cylinders are inwardly inclined toward the gyratory axis of the crusher to exert a self-centering force on the upper bowl assembly. The paired and inclined cylinders form a conical truss arrangement that reduces the need for costly maintenance, repairs, and replacement of the hold-down cylinders.

Abstract: A gyratory crusher includes a bowl assembly with a concave crushing surface and a crusher head of conical shape which extends into the concave portion of the bowl assembly. A central crusher axis extends centrally through the bowl assembly. The crusher head is mounted with a central head axis at an angular deviation with respect to the central crusher axis to intersect the crusher axis at an apex. Crushing action is obtained by driving the crusher head to gyrate the angular offset of its central axis about the central crusher axis. The gyratory crusher has an adjustable stroke of gyration. Adjustability of the stroke is obtained by controllably varying the amount of angular deviation by which the crusher head gyrates about the central crusher axis.

Abstract: A rolling bearing arrangement for a conical crusher in which a vertically arranged driving element is rotatably mounted on a base and a crushing cone is mounted inclined with respect to the vertical on the upper end of the driving element so as to be freely rotatable, characterized in that the rolling bearing arrangement comprises a single common hollow cylindrical outer part in which two inner rings situated axially behind each other are supported on rolling elements, the outer part being part of the driving element and the first inner ring being connected with the base whereas the second inner ring, which is arranged inclined and eccentrically offset with regard to the first inner ring, carries the crushing cone.

Abstract: A method for retrofitting a mechanically adjustable cone crusher which comprises removing each adjustment cap screw or locking post of the bowl asssembly and placing a hydraulic cylinder which contains a center hole under the head of each adjustment cap screw or locking post. This is followed by inserting said cap screw or locking post shaft through the center hole of said hydraulic cylinder, to its original position in the threaded bore of the bowl assembly, and adjusting the bowl assembly, followed by providing positive clamping action through the use of said hydraulic cylinders.

Abstract: The invention relates to a gyratory crusher in which a piston surrounds a wabbler shaft or eccentric sleeve and the radial forces of the spindle shaft are transmitted to the frame of the crusher through the piston.

Abstract: The present invention relates to a gyratory cone crusher having an eccentric member mounted within a lower main frame for rotational motion relative thereto. Disposed within the eccentric member is a crusher head assembly defining a first crushing surface which is adapted to gyrate relative a second crushing surface included within an upper bowl assembly attached to the main frame. Rotation of the eccentric member is facilitated by a plurality of V-belts extending between the eccentric member and a drive motor. Disposed between head assembly and the eccentric member and the eccentric member and the main frame are first and second bronze bearings which are interfaced to a lubrication system.