Modern roll service runs fast. Paper machines, plastic film lines, aluminum mills, coating lines — all running at speeds where roll imbalance becomes a vibration problem, then a quality problem, then a catastrophic failure. We dynamically balance every roll that needs it, and we run NDT (non-destructive testing) on cores and shafts to catch hidden defects before they become field failures.
Surface-breaking defects that aren't visible to the naked eye — cracks, porosity, weld defects. Penetrant draws into the defect, developer reveals it. Standard NDT method for steel and welded components.
Sub-surface defects detected with ultrasonic pulse. Critical for thick steel cores, welded joints, and any component where internal flaws could cause field failure under load.
Magnetic field + ferrous particles reveal surface and near-surface defects in ferrous (steel) components. Used on shafts, end bells, journal areas — anywhere a hidden crack would lead to expensive failure.
Every roll that runs at speed gets dynamically balanced. We use industry-standard balance grades per ISO 1940 (or customer-specified grade) appropriate to the roll's operating speed. Mechanical and electronic balance methods both available.
Balance data ships with every roll. Initial unbalance reading, final balance result, balance grade achieved, RPM tested at. Part of the complete roll analysis package.
An out-of-balance roll causes vibration. Vibration causes premature bearing failure, sheet defects, mandrel damage, and eventually catastrophic roll failure. Spend the small money on balancing now, or spend the big money on unplanned downtime later.
Receive the roll, inspect the application requirements (speed, balance grade).
If applicable: die penetrant, UT, or mag particle testing of the core/shaft.
Balance to spec (typically G6.3 or G2.5 per ISO 1940 for industrial rolls).
Balance data and NDT results included in shipping package.
Tell us about your ndt & dynamic balancing requirements. We'll respond within one business day with a specific recommendation — not a generic pitch.
☎ Call (901) 775-0513