Vibration Analysis | machine vibration,fan balancing,precision alignment

Precision Alignment

We perform shaft-to-shaft alignment of coupled machines, general bearing and component alignments, and optical alignments on machines and structures. Shaft-to-shaft alignment is done using the reverse-indicator or face-and-rim methods. We use only stainless-steel shims. The shafts are typically left at a maximum of 0.002-inch offset and a maximum angularity of 1.0-mil per inch, with tighter tolerances for higher-speed machines. When applicable, we compensate for thermal growth.

Dial indicators, precision levels, piano wire, and machined straight edges are used to align bearings, pulleys, spindles, drive shafts, couplings, gears, and other machine components.

Optical alignments are done using a Wilde T-2 theodolite. These instruments, along with precision scales, tapes, targets, and bench marks can be used to locate points within 3-dimensional space. We can check level, flatness, straightness, vertical, perpendicularity, and any positioning of objects over distances of hundreds of feet to an accuracy of one part per million.

Machinery Vibration: Alignment by MDI president, Victor Wowk, P.E.

AK-750 Precision Shaft-to-Shaft Alignment System