Wowk’s original charts for acceptable vibration levels (measured in mils or mm/s) are timeless, but a "new" version should cross-reference modern severity charts (ISO 10816-3).
Victor Wowk’s work on machinery vibration and balancing is a practical, engineering-focused resource used by rotating‑equipment technicians and maintenance engineers. The material typically covers fundamentals of vibration, causes and effects in rotating machinery, diagnostic techniques, and hands‑on balancing procedures for single‑ and multi‑plane rotors. A PDF search for "Victor Wowk machinery vibration balancing" will often return lecture notes, slide decks, and excerpts derived from his courses and publications. machinery vibration balancing victor wowk pdf new
Wowk defines vibration as the result of a dynamic force. In rotating machinery, the most common source of vibration is unbalance. Older scans butcher the complex polar plots
According to Wowk, unbalance exists when the mass centerline of a rotor does not coincide with its geometric centerline (axis of rotation). He categorizes unbalance into three primary types, each presenting a unique vibration signature: causes and effects in rotating machinery
If you need the actual information (not just a file name), here is the best path forward:
Older scans butcher the complex polar plots. A legitimate new PDF will have searchable text and scalable vector graphics (SVG) of the balancing charts.