Fail Safe Coupling with Severe Shock Load Protection is ideal for use on reciprocating machinery up to 5520 kNm. Poona Couplings Pvt. Ltd. Manufactures Fail Safe Coupling with Severe Shock Load Protection. Poona Couplings Pvt. Ltd. Is an ISO 9001-2000 awarded company that also manufactures wide range of couplings. Fail Safe Coupling with Severe Shock Load Protection allows axial and radial misalignment between the driving and driven machines. It eliminates torque amplifications through precompression of the rubber elements. It does not require lubrication or adjustment. It finds application in Marine propulsion, High power generator sets and Reciprocating compressors.