Patent ID: 7175237

Claim:
A hewing or cutting roll ( 1 ), comprising: a central roll part ( 6 ); and at least one lateral roll part ( 8 ) telescopically extractable in the axial direction ( 7 ) of the roll ( 1 ), wherein the central roll part ( 6 ) and the extractable roll part ( 8 ) each comprise a connection site for a hydraulic cylinder piston unit ( 22 ), wherein the hydraulic cylinder piston unit ( 22 ) comprises a piston guided within a cylinder bore surrounded by a cylinder wall of a cylinder and is arranged to be pivotable relative to at least one of the central roll part ( 6 ) and the extractable roll part ( 8 ) about at least two axes, and wherein the cylinder wall of the hydraulic cylinder piston unit ( 22 ) comprises a spherical or ball-shaped outer surface on an end of said hydraulic cylinder piston unit ( 22 ) facing at least one of the connection site of the central roll part ( 6 ) and the connection site of the extractable roll part ( 8 ), which end is mounted in a ball socket ( 24 ) connected with said connection site.