Roll for use in calenders and the like

Details Roll for use in calenders and the like Roll for use in calenders and the like

F - Mech Eng,Light,Heat,Weapons

16

C

92/4

F16C 13/00 (2006.01) D21G 1/02 (2006.01) F16C 13/02 (2006.01)

Patent

CA 1271352

ROLL FOR USE IN CALENDERS AND THE LIKE ABSTRACT OF THE DISCLOSURE A roll for use in a calender has a stationary carrier which is surrounded by a hollow cylindrical shell with the interposition of a hydraulically operated displacing unit which can flex selected portions of the shell when necessary so as to establish a preselected nip between the peripheral surface of the shell and the shell of an adjoining roll. The hydrostatic displacing unit is flanked by two antifriction bearings which operate between the carrier and the shell and are lubricated by a circuit which is independent of the circuit that supplies hydraulic fluid to the displacing unit. This renders it possible to use in the displacing unit a fluid whose temperature is much higher than the maximum permissible temperature of lubricant for the bearings. The bearings are sealed from the respective ends of the displacing unit by single seals or by multiple seals, and any leak fluid which penetrates beyond the neighboring seal is evacuated through one or more channels in the carrier and/or in the shell. Lubricant for the bearings may but need not be identical with hydraulic fluid which is supplied to the displacing unit.

513330

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