A guide shoe of a guiding device of a plastic processing machine clamping unit has an elongated main part in clamping direction for attachment of sliding and/or rolling elements. The guide shoe has a connecting element which is spaced from the main part and extends substantially vertically in the clamping direction, and which has a fixing region for fixing the guide shoe to a moving mold platen. The moving mold platen can be fixed solely to the fixing region of the connecting element in decoupled manner from the main part. The connecting element is designed as a deformation element fixed to the main part via a connecting region that forms a target bending zone with respect to a bend about a bending axis substantially parallel to the clamping direction, such that the deformation element additionally forms a target torsion zone about a torsion axis substantially perpendicular to the clamping direction.