The Bradbury Co., Inc., Moundridge, KS, has introduced a heavy-duty version of its B.O.S.S. shear, modified to handle 16-gauge steel. According to company officials, the new shear is intended for producers of heavier-gauge building components. The model cuts 16-gauge steel with yield strength in the 40,000-psi range and runs 48-in.-wide coils at the same 10-parts/200 ft./min. speed as the standard B.O.S.S. Shear, rated for 18-gauge steel. Like its 18-gauge counterpart, the heavy-duty version uses Bradbury's highspeed, closed-loop flying-shear mechanism to achieve rapid close-tolerance shearing. Length and batch information can be entered at the control station or downloaded from a remote computer. There are no hydraulic functions. An AC servomotor accelerates the shear head through a robust mechanical linkage. Dual acceleration arms and stable heavy-duty linear bearings contribute to accurate cuts and machine durability. As the shear head travels out to match the speed of the production line, the linkage rotates it and pulls it down for the cut in a smooth orbital motion that eliminates much of the noise, potential for strip damage and painting marking.
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