Live shaft rollers are rolls mounted in external bearings where the roll shafts (or journals) rotate with the roll. Because they can be mount in self-aligning bearings, live shaft rolls are capable of handling higher loads than comparable dead shaft idlers. Live Shaft Idler Rolls are generally used where the web or the environment challenges like high heat ovens or harsh chemicals can impact roll integrity or performance.
Dead Shaft Idler Rolls are rollers with internal bearings, designed to rotate around a stationary, dead shaft. Since only the roll shell is rotating, the dead shaft roll has a lower rotating inertia and with low friction bearings installed, dead shaft idlers are generally the best solution when a free turning roll is needed. Webex Dead Shaft Idlers have set the industry standard for over 25 years.