| Live
shaft rollers are rolls mounted in external bearings where the roll
shafts (or journals) rotate with the roll.
Live
Shaft Idler Rolls are generally used where the web or the environment
challenges roll integrity or performance. Some examples are:
High Loads
Mounted in self-aligning bearings, live shaft rolls are capable
of handling higher loads than comparable dead shaft idlers.
Elevated
Temperature
Live shaft idlers can handle substantially
elevated temperatures with proper venting. This makes live shaft
idlers ideal in oven applications where an elevated temperature
or solvent atmosphere would quickly destroy some dead shaft roller
bearings.
Harsh
Environments
By positioning the roller bearings out of
the immediate web path, exposure to process contaminates is minimized.
That's why live shaft rolls are often ideal in applications where
chemicals, dust or vapors commonly destroy dead shaft roll bearings.
Driven Rolls
With the addition of a drive pulley or sprocket, a live shaft roll
can be driven.
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