supplies an exhaust gas the exhaust gas is fed through a guide grid that forms passages of variable cross section between the supply channel and a turbine rotor this guide grid comprises a plurality of vanes of predetermined width in a vane space of about the same width a vane support ring defines one axial end of the annular vane space and an opposite ring is spaced from the vane support ring by about the width of the vanes to define the other axial end of the annular vane space to maintain this width at least two spacers are integrally formed on at least one the rings application_number US 27073805 A description according to fig1 a turbocharger 1 comprises in a manner known per se a turbine housing part 2 and a compressor housing part 3 connected to the turbine housing both being arranged along an axis of rotation r the turbine housing part 2 is shown partially in cross section as to illustrate a vane support ring often called u201c nozzle ring u201d carries an outer u201c guiding grid u201d of guide vanes 7 distributed over the circumference of the ring 6 these vanes may be pivoted by pivoting shafts 8 or may be pivoted about corresponding pivoting axes inserted into bores of the vane support ring 6 in this way each pair of vanes form nozzles between them whose cross section may be varied according to the pivoting position of the vanes 7 i e either being more radially oriented as shown or more tangentially so that the cross section is larger or smaller to supply a larger or smaller amount of exhaust gas.