NZ Navy Frigates

Trouble-free service means Trelleborg mounts are re-selected for frigate refit

After trouble-free service of 13 years, the New Zealand Navy has asked Trelleborg Industrial AVS to supply a new set of Metalastik® engine mounts for its Anzac Class frigates, to replace the mounts the company originally delivered to Tenix Defence Systems (now BAE) in 1993.

                                            D Mount

The bearings have been supplied through Hancock Industrial Ltd, Trelleborg’s New Zealand representative for this project. A total of ten ANZAC frigates were built at Tenix Defence Systems in Australia, of which the two belonging to the New Zealand Navy are now undergoing a mid-life refurbishment. When built, the Te Kaha and the Te Mana were each powered by one General Electric LM2500+ gas turbine and two MTU 12V1163 TB83 diesels driving two variable pitch propellers.
Now, the diesels are being replaced with two MTU 12V1163 TB93 engines, with a combined output of 8800 kW at 1350 rpm and weighing 16,000 kg each. The new engines, which will have their own sets of Metalastik® mounts, are each supplied by MTU on a raft. These rafts in turn will be supported on a total of 32 large Metalastik® Super-D mounts together with eight elastomeric buffers to restrain horizontal movement. The mounts are supplied by Trelleborg Industrial AVS pre-compressed to allow easy installation, so saving considerable amounts of working time at the shipyard.
Metalastik® Super-D mounts are rubber/metal bonded assemblies specially developed for arduous marine applications. They are capable of nominal static deflection of 23mm and up to 50mm shock excursions in any direction.