A line shaft rotating at 250 rpm is connected to a grinding wheel by the pulley assembly shown. If the grinder shaft must turn at 1050 rpm , what size pulley should be attached to the line shaft? If the grinder shaft must turn at 1050 rpm, a 1.43 in. pulley should be attached to the line shaft.

Did you know that line shafts were once the heartbeat of factories in the 19th and early 20th centuries? They were essentially long rotating shafts that powered machines before the advent of electric motors. A series of pulleys and belts would transfer that rotary motion from the line shaft to various machines throughout a workshop, facilitating mass production like never before! To ensure your pulley calculation's success, keep an eye on common mistakes such as incorrect measurements or miscalculating the ratio. Always ensure that the diameters of pulleys are measured accurately, as even a small discrepancy can lead to significant differences in speed. It’s also wise to double-check that the rotational direction of the line shaft matches that of the grinder – misalignment could put a damper on your operation!