Abstract: A piercing tip for a demolition shear, the piercing tip including a blade-side sidewall and a guide-side sidewall, a front wall, and a bottom wall. An intersection of a front outer wear surface of the front wall and a bottom wear surface of the bottom wall defines a front piercing edge. An intersection of a planar outer wear surface of the blade-side sidewall and the bottom wear surface of the bottom wall defines a shearing edge. A blade set may include the piercing tip and at least one shear blade. The piercing tip and at least one shear blade may be mounted to the blade-side of an upper jaw of the demolition shear.

Abstract: A demolition shear and a piercing tip insert and nose configuration for a demolition shear which resists nose wear and resists retract forces exerted on the piercing tip insert in jamming situations and in the event of snagging of the piercing tip insert. The piercing tip insert includes first and second piercing tip halves, each half having an outer planar sidewall, a curved front wall extending laterally inward, and a bottom leg extending laterally inward defining a shearing edge and a piercing edge.

Abstract: A demolition shear and a piercing tip insert and nose configuration for a demolition shear which resists nose wear and resists retract forces exerted on the piercing tip insert in jamming situations and in the event of snagging of the piercing tip insert. The piercing tip insert includes first and second piercing tip halves, each half having an outer planar sidewall, a curved front wall extending laterally inward, and a bottom leg extending laterally inward defining a shearing edge and a piercing edge.

Abstract: A demolition shear and a piercing tip insert and nose configuration for a demolition shear which resists nose wear and resists retract forces exerted on the piercing tip insert in jamming situations and in the event of snagging of the piercing tip insert. The piercing tip insert includes first and second piercing tip halves, each half having an outer planar sidewall, a curved front wall extending laterally inward, and a bottom leg extending laterally inward defining a shearing edge and a piercing edge.

Abstract: A slewing ring grease assembly for providing grease to internal gear teeth of a slewing ring. The slewing ring grease assembly includes a bulkhead fitting having a flange and a shaft, the shaft extends through a hole in the bulkhead attached to the slewing ring such that the shaft extends over the internal gear teeth of the slewing ring. The bulkhead fitting flange is secured to the bulkhead on a side opposite the internal gear teeth of the slewing ring. A passage through the bulkhead fitting is provided which is capable of delivering grease through the bulkhead fitting and onto the internal gear teeth of the slewing ring. The grease assembly may include a wall fitting extending through a wall of housing supporting the bulkhead and a connecting tube capable of delivering grease from the wall fitting to the passage of the bulkhead fitting.

Abstract: A hydraulic swivel assembly includes a hydraulic swivel having a plurality of ports on a base and a plurality of ports on a rotatable extension. A manifold block is secured to the base, and has a corresponding plurality of ports matingly aligning with the plurality of ports of the base, whereby the plurality of ports of the manifold block are adapted to couple to a first set of hydraulic lines from a non-rotating member and the plurality of ports on the rotatable extension are adapted to couple to a second set of hydraulic lines which rotate with the rotatable member.

Abstract: A demolition shear and a piercing tip insert and nose configuration for a demolition shear which resists nose wear and resists retract forces exerted on the piercing tip insert in jamming situations and in the event of snagging of the piercing tip insert. There is a need for a demolition shear having a piercing tip insert and nose configuration to reduce nose wear and to resist retract forces exerted on the piercing tip insert in jamming situations and in the event of snagging of the piercing tip insert.

Abstract: A slewing ring grease assembly for providing grease to internal gear teeth of a slewing ring. The slewing ring grease assembly includes a bulkhead fitting having a flange and a shaft, the shaft extends through a hole in the bulkhead attached to the slewing ring such that the shaft extends over the internal gear teeth of the slewing ring. The bulkhead fitting flange is secured to the bulkhead on a side opposite the internal gear teeth of the slewing ring. A passage through the bulkhead fitting is provided which is capable of delivering grease through the bulkhead fitting and onto the internal gear teeth of the slewing ring. The grease assembly may include a wall fitting extending through a wall of housing supporting the bulkhead and a connecting tube capable of delivering grease from the wall fitting to the passage of the bulkhead fitting.

Abstract: A heavy-duty demolition shear with a replaceable shearing tip has a lower jaw and an upper jaw pivotally connected to the lower jaw. The upper jaw has primary and secondary shear blades. A replaceable shearing tip is mounted to the upper jaw. The replaceable shearing tip has two L-shaped sections which engage the upper jaw between them. The replaceable shearing tip engages the upper jaw on at least three seats. The replaceable shearing tip is connected to the upper jaw by socket-head cap-screws.

Abstract: A heavy-duty demolition shear with a replaceable shearing tip has a lower jaw and an upper jaw piviotally connected to the lower jaw. The upper jaw has primary and secondary shear blades. A replaceable shearing tip is mounted to the upper jaw. The replaceable shearing tip has two L-shaped sections which engage the upper jaw between them. The replaceable shearing tip engages the upper jaw on at least three seats. The replaceable shearing tip is connected to the upper jaw by socket-head cap-screws.

Abstract: A heavy-duty demolition shear for attachment to the boom structure and hydraulic system of an excavator, has a rigid lower jaw and an upper jaw and pivot interconnecting the jaws together. The shear is attachable to the boom structure of the excavator. The upper jaw has upper shear blades, while the lower jaw has at least one lower shear blade. The lower jaw also has a rigid guide blade lying along the lower shear blade and in spaced relation therewith. The outer ends of the shear blade and guide blade are co-extensively opposed to each other so that a tie plate secures the outer ends of the lower shear blade and the guide blade together. There is an open slot between the lower shear blade and the adjacent guide blade to receive the upper shear blade and upper jaw therein. The upper jaw has a cylinder attached to the hydraulic system of the excavator for closing and opening the upper jaw relative to the lower jaw.

Abstract: A heavy-duty demolition shear with a replaceable shearing tip has a lower jaw and an upper jaw piviotally connected to the lower jaw. The upper jaw has primary and secondary shear blades. A replaceable shearing tip is mounted to the upper jaw. The replaceable shearing tip has two L-shaped sections which engage the upper jaw between them. The replaceable shearing tip engages the upper jaw on at least three seats. The replaceable shearing tip is connected to the upper jaw by socket-head cap-screws.

Abstract: A heavy-duty demolition shear with a replaceable shearing tip has a lower jaw and an upper jaw piviotally connected to the lower jaw. The upper jaw has primary and secondary shear blades. A replaceable shearing tip is mounted to the upper jaw. The replaceable shearing tip has two L-shaped sections which engage the upper jaw between them. The replaceable shearing tip engages the upper jaw on at least three seats. The replaceable shearing tip is connected to the upper jaw by socket-head cap-screws.

Abstract: A hydraulic rotary grinder for attachment to construction machinery such as an excavator, consisting of a rotating drum having a hollow core and a plurality of attached replaceable grinding tips. A hydraulic motor rotates the drum, and is secured within the hollow core and activated by the hydraulic system of the construction machinery. A planetary gearbox is associated with the hydraulic motor to provide speed changes. At least one weight within the hollow core provides shock absorption and additional mass to the rotating drum. A heat-absorbing liquid within the hollow core absorbs heat from the grinding operation and a seal prevents the heat-absorbing liquid from leaking out of the drum. A number of water nozzles may be mounted on the apparatus for dust suppression. A second hydraulic motor may be provided for increased torque and grinding capacity.

Abstract: A heavy-duty shearing and crushing demolition apparatus for attachment to a boom structure and hydraulic system of an excavator. The apparatus includes a lower jaw with a primary blade, an upper jaw with primary and secondary blades oblique with respect to each other, and a shearing and crushing tip on the upper jaw secondary blade with a shearing point, a crushing point, and a support and shearing tip blade portion between the shearing point and the crushing points. This structure exposes the crushing point for crushing when the upper jaw is open from the lower jaw with the shearing tip out of the way and also exposes the shearing tip for shearing when the upper jaw is closing into the lower jaw. This permits shearing beginning at the shearing tip and shearing rearwardly. The support and shearing tip blade portion supports the workpiece while shearing it, producing a substantially flat non-contoured or twisted workpiece.

Abstract: A blade stabilizer device for a heavy-duty material handling demolition tool for shearing and crushing scrap material which includes a lower jaw connected to the boom structure of a hydraulic system of an excavator and has an upper jaw pivotally connected and closeable upon the lower jaw at a pivot point. The blade stabilizing device consists of a wear guide pad supported by the lower jaw adjacent the pivot point slidably engaging the upper movable jaw to keep the upper jaw in close engagement with the lower jaw. The wear guide pad is mounted behind the pivot point. A second wear guide pad may be mounted in front of the pivot point on the opposite side of the upper jaw to cross-brace the upper jaw.

Abstract: A heavy-duty demolition shear with a replaceable shearing tip has a lower jaw and an upper jaw piviotally connected to the lower jaw. The upper jaw has primary and secondary shear blades. A replaceable shearing tip is mounted to the upper jaw. The replaceable shearing tip has two L-shaped sections which engage the upper jaw between them. The replaceable shearing tip engages the upper jaw on at least three seats. The replaceable shearing tip is connected to the upper jaw by socket-head cap-screws.