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This part is heat treated at the end of the process chain. To do this, the raw part must be produced with minimum residual stresses. This splined shaft is machined ready for assembly in various clampings. Very high quality requirements are demanded of the splines (NVH). Likewise, the run-out of 30 µm must be achieved by an appropriate production chain. The greatest challenge is presented by plasma nitriding at the end. All production processes can be carried out internally at Hirschvogel.