Coldwater Seals, offers on-site custom fitting of seals on any suction roll at any location in the
continental U.S. by a trained Coldwater technician.
The custom fitting procedure consists of:
A multi-plane bore profile of the shell inside diameter.
Measurements of the suction box to establish the relationship between the seals and the centerline of the roll.
An inspection of air loading tubes and/or springs for proper size and operation.
A calculation of the proper sizes of the seals and end deckles to match the shell and minimize horsepower consumption.
Recommendations to make any suction roll operate at 5 psi (0.3 bar) or less air loading tube pressure.
Training of mill personnel in suction roll operation, maintenance, and problem solving.
The height of suction roll seals should change as the roll ages to compensate for shell wear. Even in new
rolls, the seals are not specifically sized to fit each box and shell and the inherent tolerances allowed in the
manufacturing of the suction rolls. Improperly fit seals or end deckles can have a dramatic effect on horsepower
consumption. Air loading tube pressures of 15 psi (metric conversion = 1 bar) or greater can require up to 100 amps
more power to turn the suction roll than at 5 psi. Properly fit seals glide on a film of water and float softly on
the air loading tubes. Operating intervals of up to two years are possible in well-maintained rolls.
Call toll-free 1-877-344-0314 to schedule an on-site inspection of the shell, seals, deckles, and loading
mechanisms, and engineering of optimum seal and deckles sizes to match your roll's current condition.
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