Abstract: A sleeve is configured to be fitted onto a rotating shaft and the sleeve includes a tubular portion extending in an axial direction and having a cylindrical-shaped sealing guide surface configured to contact a radial shaft seal. A flange extends outward from the tubular portion at least substantially in a radial direction that is perpendicular to the axial direction. A first target break line is defined between the tubular portion and the flange and is configured to facilitate separation of the flange from the tubular portion. Further, a second target break line is defined in or on the flange and is configured to facilitate tearing of the flange at least substantially in the radial direction of the flange up to the first target break line.

Abstract: A sleeve is configured to be fitted onto a rotating shaft and the sleeve includes a tubular portion extending in an axial direction and having a cylindrical-shaped sealing guide surface configured to contact a radial shaft seal. A flange extends outward from the tubular portion at least substantially in a radial direction that is perpendicular to the axial direction. A first target break line is defined between the tubular portion and the flange and is configured to facilitate separation of the flange from the tubular portion. Further, a second target break line is defined in or on the flange and is configured to facilitate tearing of the flange at least substantially in the radial direction of the flange up to the first target break line.

Abstract: A key device for locking an element to a shaft for rotation therewith includes a key-engaging surface on the shaft which is provided with first and second opposite ends and angles radially inwardly toward the shaft axis. The first end of the key-engaging surface is located at the shaft periphery, and the shaft is provided with a radially extending shoulder at the second end of the key-engaging surface. An element to be secured to the shaft has a shaft-receiving opening which receives that portion of the shaft having the key-engaging surface. The element is provided with an outer side and a radially extending keyway which opens through the shaft-receiving opening in registry with the key-receiving surface. The keyway is provided with a rear cam surface which extends angularly from the outer side of said element at a point radially spaced outwardly from the shaft-receiving opening to the shoulder on the shaft.