Wednesday, June 26, 2019

Machine Tools News

Dual-fuel commercial marine engine 6EY26DF. Image provided by Yanmar

Yanmar Delivers Dual-Fuel Tugboat Propulsion Engines

Japan-based Yanmar has delivered two 6EY26DF dual-fuel commercial marine engines with the ability to use both heavy fuel oil (HFO) and liquefied natural gas (LNG) as fuels for the LNG tugboat. Mitsui O.S.K. Lines, Ltd. (MOL) will take delivery of the vessel once construction is completed in February 2019 with the tugboat expected to commence operation in April 2019.Yanmar has also received orders for the LNG fuel tanks, buffer tanks, and gas combustion devices that make up the LNG fuel feed systems for the engines.The MOL-owned vessel will be manufactured by Kanagawa Dockyard Co., Ltd.

Shrink fitting of shaft and bevel gear; ©SCHOTTEL

SCHOTTEL Pumps €45 Million into New Factory

SCHOTTEL, a German manufacturer of marine propulsion systems, has invested a total of €45 million to open a new state-of-the-art Rudderpropeller factory, increasing the company’s production capacity by roughly 30 percent. The factory, near its headquarters in Spay, Germany, was officially opened in the summer of 2015 following a construction period of about two years. It features four production shops (up to 270 meters long and 18 meters high) and a three-storey building for administration, social and technical purposes.

Wärtsilä Offers Stern Tube Seal Repair

Stern tube seals, mounted between the propeller and the stern tube, are vulnerable to damage due to the hazards present in the subsea environment. Operating with a damaged seal risks environmental pollution and failure of the stern tube bearings, either of which can result in a vessel being unable to sail, costing the owner time and money. Failure may occur when a stern tube seal is compromised by a foreign object such as fishing line or by environmental abrasion. When this happens, the seal must be repaired or replaced before the ship can sail again.

MHI Develop Double Column Machining Center

Mitsubishi Heavy Industries, Ltd. (MHI) has completed the development and begun full-scale marketing of a double column machining center - dubbed the "LH250" - capable of high-precision machining of workpieces up to 2 meters in length. The new unit not only offers significantly enhanced vibration absorption capability in the machine structure and greater rigidity in the high-speed main spindle, it also incorporates MHI's unique main spindle lubrication cooling technology and suppresses self-heating of the machine normally caused by long hours of continuous operation…