Roll or roller – Rotatable relative to supporting shaft
Patent
1994-05-24
1996-01-30
Eley, Timothy V.
Roll or roller
Rotatable relative to supporting shaft
492 7, 1623581, F16C 1300
Patent
active
054877156
ABSTRACT:
A roll for the preparation or treatment of fiber webs includes a fixed central axis, a roll shell adapted to rotate around the fixed axis and a first chamber disposed between the central axis and the rotatable roll shell. The first chamber is filled with liquid which can transfer a hydraulic supporting force from the central axis to the roll shell. The roll includes a second chamber that is partially filled with air and partially filled with a liquid. Several narrow capillary lines connect the first and second chambers. The capillary characteristic (K) of the capillary lines ranges between about 2.5.times.10.sup.7 m.sup.-2 and about 2.5.times.10.sup.8 m.sup.2.
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Butler Marc W.
Eley Timothy V.
J.M. Voith & GmbH
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