GLS120 Integrally Motorized Spindles Mounted on a Harden Way Slide Motorized spindles finish wrist-pin bores to perfection

Four Gilman GLS120 motorized spindles mounted on a HWL24 “low profile” hardened way slide were chosen as the solution. The spindles featured flanged-foot housings secured to a precision mounting plate atop the ground ball screw- driven slide. The GLS120 spindles were extremely low in vibration. Their integral motor design minimized the number of moving parts and the spindle shaft and rotor were precision balanced before assembly.  Precision ABEC 7/9 bearings, a triplex set in the spindle nose and a duplex in the rear, delivered rotational accuracy with a maximum runout of .0001”. Liquid cooling of the spindle housing provided a clean and stable environment for the bearings and motor. The integral motor design of the spindles also contributed to a very compact station. Individual integral motors also helped achieve a control goal for the builder. The ability of the line to process fewer than the four parts per station was felt to be a key feature that would keep the line running in the event that any of the processing positions at any of the line’s stations went down. The rough cut boring station that preceded this finishing station also featured Gilman Precision spindles and components.