A cutting device with the capability of cutting hard materials, such as steels, stainless steels and other similar and exotic alloys. The cutting device includes a cutter head having a central aperture and a stationary body having a channel extending therethrough. The stationary body extends through the central aperture of the cutter head. The cutter head is rotatable between a first configuration and a second configuration relative to the stationary body. The cutting device also includes first and second substantially parallel blades fixed to the stationary body. In the first configuration, the first blade is a first distance from the second blade. In the second configuration, the first blade is a second distance from the second blade. The cutting assembly is connected to a drive mechanism with a driver and an actuator. The actuator connects the cutter head to the driver. Engagement of the driver rotates the actuator, which rotates the cutter head.

A motor-operated shears which includes two blades that can move towards each other to perform a shearing movement is provided. In order to advantageously improve functional safety, towards the end of the movement, the blades are acted upon in a direction running transversely to the movement so as to keep the blades at a distance from one another in said direction.

Shear tools are described. In one version, the shear tools include a pair of pivotally movable jaws positioned between sideplates. Various shearing dies are also described. Also described are systems and related methods utilizing the shear tools and dies which enable convenient shearing or severing of workpieces such as threaded rods.

A cutting head for a hydraulic power tool includes a first jaw that includes a first ear configured with a slot for receiving a corresponding ear. The second jaw includes a second ear with a third ear bore that aligns in between a first ear bore and to a second ear bore of the first ear when the second ear is coupled in the slot of the first ear. The cutting head further includes a spring-biased flange coupled to a blade mounted to the first jaw and a retained coupled at a fixed position to a blade mounted to the second jaw. The retainer is configured to receive the flange during a cutting action such that the flange prevents the blades from shifting out of alignment during the cutting action.

Plies have a first and a second plier limb which are rotatably held relative to one another on an axis of rotation an articulation region and form a jaw region on one side of the articulation region and handle sections on the other side of the articulation region. The jaw region has a cutting pattern with first and second cutting edges which, in the closed position of the pliers, are crossed with respect to a shear plane and which have a central plane running through the axis of rotation, perpendicularly to the shear plane in the closed position. The cutting edges are crossed to a greater degree in a region remote from the articulation, in the opening direction of the pliers, than in a region closer to the articulation.

A shear blade (2) is for a portable hydraulic cutting device, such as a rescue device having a blade body (9). The blade body (9) has an assembly region (18) and a cutting region (15), a cutting edge (16) in the cutting region (15), a contact surface (13), located on one side of the cutting edge (16), for an additional shear blade. An outer surface (14), located on the other side of the cutting edge (16), is provided to act on the object to be cut. The cutting region (15) has a recess (22) for receiving a cutting insert (21). The recess (22) is configured such that the cutting insert (21) is insertable into the recess (22) at an acute angle δ to the contact surface (13) of the shear blade (2).

A shear blade (2) is for a portable hydraulic cutting device, such as a rescue device having a blade body (9). The blade body (9) has an assembly region (18) and a cutting region (15), a cutting edge (16) in the cutting region (15), a contact surface (13), located on one side of the cutting edge (16), for an additional shear blade. An outer surface (14), located on the other side of the cutting edge (16), is provided to act on the object to be cut. The cutting region (15) has a recess (22) for receiving a cutting insert (21). The recess (22) is configured such that the cutting insert (21) is insertable into the recess (22) at an acute angle δ to the contact surface (13) of the shear blade (2).

A cutting head for a power tool. The cutting head includes a first jaw having a first blade mounting surface and a second jaw having a second blade mounting surface. The second jaw is rotatably coupled to the first jaw. The cutting head also includes a first blade removably coupled to the first blade mounting surface of the first jaw and a second blade removably coupled to the second blade mounting surface of the second jaw. A first cutting edge of the first blade is substantially co-planar with a second cutting edge of the second blade. During a cutting action, the first jaw and the second jaw rotate with respect to one another to bring the first cutting edge closer to the second cutting edge.

A cutting head for a power tool. The cutting head includes a first jaw having a first blade mounting surface and a second jaw having a second blade mounting surface. The second jaw is rotatably coupled to the first jaw. The cutting head also includes a first blade removably coupled to the first blade mounting surface of the first jaw and a second blade removably coupled to the second blade mounting surface of the second jaw. A first cutting edge of the first blade is substantially co-planar with a second cutting edge of the second blade. During a cutting action, the first jaw and the second jaw rotate with respect to one another to bring the first cutting edge closer to the second cutting edge.

A shear blade is for a portable hydraulic cutting device having a blade body. The blade body has assembly and cutting regions, with a cutting edge in the cutting region. A contact surface is on one side of the cutting edge for an additional shear blade. An outer surface on the other side of the cutting edge acts on the object to be cut. A first surface portion of the outer surface extends away from the cutting edge along an orthogonal, which meets the contact surface at the cutting edge, or at an acute angle relative to the orthogonal. A second surface portion connects to the first surface portion at an acute angle to the orthogonal. A third surface portion connects to the second surface portion at an acute angle to the orthogonal. Angle is smaller than angle , which is smaller than angle .