In the past SIR has served countless customers in the United States repairing CNC equipment such as Warner & Swasey, Cinncinnati Milacron, Haas, Kerney & Trecker, Giddings & Lewis, Lucas, Mori Seiki, Mazak, Okuma Daewoo, Ikegai, Hitachi Seiki, Karaki and others.

Reconditioning of a spindle begins with a visual inspection and total indication run-out. Then we disassemble it, inspect and Magnaflux for cracks all internal parts including the bearings, bearing surfaces, taper, Bellville washers, seals and seal areas. We grind the bearing surfaces and taper and apply hard chrome to these areas. Then these areas are finish ground to original specifications. Chrome is a harder substance than is usually used in machine steel (72 Rockwell on a C scale as opposed to approximately 48-50 Rockwell) giving you a longer lasting bearing and machine surface and thereby reducing wear. This will also extend the life of your live tooling, Then the spindle is reassembled with new bearings and Bellville washers, replacing any other worn internal parts as necessary, and the unit is tested.

SIR has complete machine shop facilities, such as complete grinding (OD and ID), horizontal and vertical milling, large capacity lathes, boring, spline and gear hobbing and all types of welding on ferrous and non-ferrous metals.