Determining the service or useful life of screw actuators – lead (acme), ball, and roller screws is a fundamental problem that faces many motion-system designers. In a broad sense, a screw’s service ...

Static and dynamic tests load the pallet until failure or limiting deflection; the nominal load (lowest safe load) and maximum working load (in specific support conditions) derive from these tests.

In some applications, allowable load seriously influences selection. Major variables affecting load capacity are ball size and number and internal geometry of the bearing. Static: Primary ...