An adapter board for use with a blade assembly includes a lower tool bit attachment portion, terminating in a lower adapter board free end, the lower adapter board free end defining a bottom surface defining a plurality of shank receiving bores and a plurality of pry slots. Each one of the plurality of pry slots is disposed adjacent at least one of the plurality of shank receiving bores.

A tool bit comprises a shank portion defining a longitudinal axis, and a working portion extending downwardly axially from the shank portion. The working portion includes a rear region, a front working region, a first side region and a second side region, and the first side region and the second side region define an angle of extension measured in a plane perpendicular to the longitudinal axis, forming a wider front working region than the rear region in a plane perpendicular to the longitudinal axis.

An orientation plate comprises a rectangular body defining a top surface, a bottom surface, a front surface, a back surface, a first end surface, a second end surface, and a thickness that is the minimum dimension of the body, and a plurality of apertures extending through the thickness of the body, each aperture defining a perimeter having at least one orientation flat.

A tool bit comprises a shank portion defining a longitudinal axis; and a working portion. The working portion includes at least a first arcuate surface disposed longitudinally adjacent the shank portion.

A tool bit comprises a shank portion including a cylindrical configuration defining a longitudinal axis, a radial direction, and a circumferential direction, and a working portion including a cylindrical configuration that is concentric with the shank portion and a flat bottom surface.

The tooth adapter partly inserted into a cavity formed in a tooth to hold the tooth with respect to a bucket body includes a connection portion including a proximal end, which is an end of the tooth adapter connected to the bucket body, and an insertion portion including a distal end, which is an end of the tooth adapter inserted into the cavity. The insertion portion includes a base, and a high-hardness portion formed in a region including a surface of the insertion portion, the high-hardness portion being higher in hardness than the base.

A wear resistant component includes a matrix portion made of metal, a core embedded in the matrix portion and having a hardness higher than that of the matrix portion, and a plurality of support members having at least one end exposed from a surface of the matrix portion, extending toward an interior of the matrix portion, and contacting the core at a portion other than the one end to define a position of the core within the matrix portion.

A tooth as the earth and sand abrasion resistant component includes a base, a first overlay layer disposed in contact with the base so as to cover a distal end face which is a part of a surface of the base, and a second overlay layer disposed on the first overlay layer. The first overlay layer and the second overlay layer each include a matrix made of iron or steel, and cermet particles made of cermet and dispersed in the matrix.

Incorporating hard particles in a matrix forming the surface of a member can significantly increase wear resistance. Hard particles can degrade when they come in contact with a molten matrix material releasing constituent elements. These elements can locally degrade the matrix material on solidification. Coating the hard particles to limit contact with the matrix material and introducing an alloying element proximate the hard particles improve retention of the particles in the matrix.

A locking assembly is disclosed for securing a wear member to a support structure. The locking assembly includes a locking pin having a pin capable of securing the wear member to the support structure. The pin is disclosed as including pin portions that are interconnected through a coupling to allow torque to be transferred from at least one pin portion to the other pin portion and allow axial movement of one of the pin portions relative to the other pin portion in the direction of the pin axis. Also disclosed is a locking assembly to retain a pin in a predetermined position.