Product

Wednesday, January 14, 2004

Advanced Bearing for Sub Ops

Orkot TXMM bearings were chosen for use on a deep ocean submarine installation. The TXMM bearing reportedly exhibits negligible swell in water, therefore maintaining the correct installed operating clearances needed to retain dimensional stability and deliver a long wear life at submarine operating depths.

TXMM can be used for special spherical bearing applications and is maintenance free. It has approval for hatch cover slide pads operating dry at pressures up to 35N/mm2. It also has classification approvals from all major societies for totally dry operation, such as neck bearings for ship's rudders.

Renk Gears for Fast Trimaran

Renk won a contract on the main reduction gear for a new generation of fast ferry design, a 127-m long trimaran introduced by Austal for Fred Olson SA. The innovative ship is due to start operation in the Canarian Islands by the end of 2004, carrying 1,350 passengers and 340 cars at more than 40 knots.

A real innovative design applies to the center combining gear - Renk ASL 2 x 80 - which transmits the power supplied by two diesel engines (2 x 9,100 kW/1,150 rpm) to one large booster jet. For most operational flexibility, this is to be driven not only at continuous maximum power, but also in partial load with one diesel engine. For optimization, a second gear stage is introduced in form of a planetary gear on the output shaft arrangement, the operable from both diesel ends and avoiding separate gear stages.

New Valve Seat and Recess Lathe type VRL

With the development of the VRL machine, the function of in-situ machining of valve seats and seat recesses of medium speed diesel engines has been accomplished. The VRL is adjustable for different machining diameters, and for machining seat recesses horizontally, vertically and for chamfering. It is electrically driven and a frequency converter enables step-less adjustment of the rotational speed of the machine from 0 - 290 rpm. The spindle for machining the recesses is made of two parts and thus divisible for easy access with a standard diameter measuring tool. For seat angle machining, the exchangeable adapter makes it a simple operation, and several pre-set seat angles can be set from our factory. Automatic centering with high accuracy makes the VRL easy to operate.

Stern Tube Installation in Hours

Skandiaverken of Sweden has acquired the patented technology and production facilities for the SKV Flexi Tube. The SKV Flexi Tube is designed to allow a complete stern tube installation in hours, as it is designed to require less preparation work for designers and shipyards. Alignment is achieved by the SKV Flexi Tube being integrally cast in an epoxy resin using a specially designed and patented sealing package and a filling method that is designed to give complete filling sans air pockets. It shall not be welded to the ship structure since a patented axial flexibility of the forward boss allows thermal expansion while in operation.

In order to design a customized SKV Flexi Tube, the only information needed is type of hull, calculated stern tube length and diameter of propeller shaft.

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