Keep your Calender Running During Warm-Up and Cool Down

Severe thermal run-out can be introduced during warm-up of the calender if it is not kept running. Remember that the calender gap will be reduced as the rolls grow (get larger) as their temperature … [Read more...]

More Calender Run-Out problems – Roll Water Passage

Most modern calender rolls are the drilled type. This means that water passages are drilled across the roll face under the surface. This effectively forms a radiator-like heat exchanger around the … [Read more...]

Calender Roll Surface Run-Out may actually be the bearings

Calender roll bearing smay have excessive run-out. The result is the same as, and will appear as calender roll surface run-out. Excessive bearing clearance will result in the roll shifting during … [Read more...]

Calender Rolls Seem to be Erratic? Check for Roll Eccentricity!

Calender rolls must be round and free of run-out at ambient temperature. Any run-out of the individual calender rolls will be amplified as the high spots and low spots periodically match up between … [Read more...]