Usage: engineering, sha- tunno-piston internal combustion engine or compressor group. SUMMARY OF THE INVENTION: connecting rod-piston group comprising a piston 1 with a fixed therein convex spherical insert 2 and pivotally coupled to the piston rod 5 and the plunger head having a heel curved shape with inner spherical surface mating with the spherical surface of the insert 2. When the insert has through-slots 3 disposed therein connecting bolts 8. The insertion of the piston has an internal spherical surface equidistant outer, insert 2 installed inside the latch 6 with a spherical outer surface, with straight zhennoy the inner surface of the insert 2, connected by bolts 8 with the piston rod head. Inside the through slot 3 inserts 2 are arranged with a gap inserts 7 comprising apertures for the passage of connecting bolts 8 and having spherical surfaces adjacent to the spherical surfaces of the retainer 6 and the piston connecting rod, wherein the radial thickness of the inserts 1 is greater than the radial insertion thickness of 2 on the magnitude of the mounting hinge gap 2 yl jb mfo i ate C h h | about eating with th
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