Poona Couplings Pvt. Ltd. Manufactures Heavy Duty Steel Coupling. Poona Couplings Pvt. Ltd. Is an ISO 9001-2000 awarded company that also manufactures wide range of couplings. Heavy Duty Steel Coupling ensures continuous operation of the driveline in the unlikely event of rubber failure or damage. It allows axial and radial misalignment between the driving and driven machines. It is available with vibration control. It eliminates torque amplifications through precompression of the rubber elements. It gives protection and avoiding failure of the driveline under high transient torques.