Patent ID: 7001142

Claim:
A turbocharger in which gas is directed through a first annular passage ( 30 ) to the turbine, including a housing ( 18 , 24 , 26 ), a ring of guide blades ( 34 ) in the first annular passage ( 30 ), which are mounted pivotably on a nozzle ring ( 38 ) defining one boundary of the first annular passage, and an annular actuating ring ( 48 ) coupled to pivot the blades by movement of the actuating ring in relation to the nozzle ring, and a suspension mechanism ( 55 , 59 ) for the actuating ring ( 48 ) which brings about a coaxial location of the nozzle ring and the actuating ring relative to each other and about the turbine shaft, wherein pins ( 55 ) and rollers ( 49 ) with grooves ( 59 ) are provided about one of the inner and the outer circumference of the actuation ring, which rollers are provided in a second annular passage formed between a housing part ( 126 ) and the nozzle ring ( 38 ), wherein the pins ( 55 ′, 55 ′) engage with one end in a bore in the nozzle ring ( 38 ) and wherein the length of the pins projecting from the bores corresponds approximately to the axial length of the rollers.