6 Dec 2012
ERJ staff report (LMH)
London -- Trelleborg Industrial AVS has won a contract worth over £2 million (Euro 2.4 million) to supply Metalastik components for both the primary and secondary suspension on the 63 trains of the London Underground's Jubilee Line.
The original suspension components are undergoing a comprehensive overhaul under the new contract, Trelleborg said in a 6 Dec news release.
The Metalastik chevrons, which are made from a special low-creep rubber compound, are fitted in pairs at the axle box to provide longitudinal, vertical and lateral flexibility and are designed to absorb high levels of shock and vibration.
The other major component of the suspension package is the Hourglass bearer springs, which are mounted in pairs, on the bogie. The springs consist of two hemispheres of rubber bonded to top, bottom and central steel plates, which are design to reduce height variation between empty and fully laden carriages, Trelleborg said.
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Website from Trelleborg
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