threads 117 the opening 112 extends parallel to axis 22 of shaft 2 the clothing holder 12 is attached according to the invention on the side of the face 14 of opener roller 1 towards the bearing 3 this means that the surface of the face towards the bearing is interrupted because the fastener 4 extends through its surface however because the screw 41 is in the form of a countersunk head screw the disturbance of the evenness and smoothness of the surface of face 14 is kept at a minimum the opening 112 is countersunk in the area of face 14 to receive the countersunk head screw 41 to increase the stability of the basic body 11 and in particular of its hub 111 it is reinforced by means of ribs 114 it is especially advantageous for the basic body 11 to be provided with air ducts 115 shaft 2 is provided with a bore 23 parallel to its axis so that the air duct 115 is connected via bore 23 with the outside air i e the air outside an opener roller housing this has the advantage that the sealing gap 9 between the basic body 11 and the sleeve 31 of bearing 3 is connected to the outside air as a result air is able to flow through bore 23 through the air duct 115 and into the area in front of the face 14 towards the bearing the result of this is that the interior of the opener roller is kept free of fibers and dirt which would otherwise reach the interior through the sealing gap 9 and could soil the ball bearing of shaft 2 for example or could accumulate to such.