Convert the rotary motion of a smooth shaft into linear movement. Often used with conveyors and other equipment that already have a rotating shaft, these drive nuts move loads such as carriages and scanning sensors or cameras in a straight line. Internal friction rollers contact the shaft at an angle to create motion. The bearings are lubricated for life, so the drive nuts require little maintenance. Thrust adjustment bolts let you fine-tune the amount of force the drive nuts exert. If the load becomes too heavy or something blocks the motion, the drive nuts will slip along the shaft instead of damaging your equipment. You can push a load with these drive nuts or mount them to the top of a load to carry it.