Fluid controlled clutch release bearing for diaphragm clutch, especially for motor vehicles, with guide sleeve

摘要

A clutch release bearing having a fixed portion (5,6) including an inner support tube (6) and an outer body (5) concentric therewith which defines a control chamber (50) capable of being supplied with a fluid and housing an axially movable tubular piston (4) supporting a drive member (3) engageable with the diaphragm (13) of the clutch (1), wherein the support tube (6) axially projects beyond the outer body (5). The front end of the support tube (6) is surrounded by a guide sleeve (9) for the piston (4).