Abstract: A torsional vibration damper such as a twin mass flywheel (10), having an input clement (11) and an output element (12) which are relatively rotatable against the action of a damping means which includes a plurality of linkages(40). Each linkage has one or more links (41) mounted on one element (11) via pivot pins (43) which are arranged to extend generally radially in use and connected with the other element (12) by one or more additional links(42). The pivot pins (43) of the generally radially extending links (41) are supported from the associated damper element (11) via spaced bearings (43a, 43b). A number of Such spaced bearing arrangements are disclosed some of which hold grease captive.