On Site (In-Situ) Repair Item Descriptions On Site (In-Situ) Repair Item Descriptions
We carry out on site machining, in situ machining and portable machining including crankshaft grinding worldwide. Services Available World-wide.
On site machining and in-situ machining (including crankshaft grinding) carried out worldwide, 24 hours a day 365 days per year.
In-Situ Machining for the Marine, Power Gen, Petrochemical, Process and General Industry 365 days/year.





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What is it and what does it do?
Crankpin Otherwise known as a "Large End Journal" or "Big End Journal" a Crankpin is the eccentric part of the Crankshaft which carries the Con Rod which is in turn connected to the Piston. As the Crankshaft rotates the Crankpin drives the Piston up and down the Cylinder.
Main journal The Main Journals form the rotational centre of the Crankshaft and each has a bearing area which sits in the Engine Block. The Main Journals are held in place with a Main Bearing Cap.
Thrust face This is the part of the crankshaft or shaft which acts as a restraint to stop or limit axial movement (ie. back and forwards or up and down) when the shaft is rotating under load. It is usually a simple collar around the shaft with a vertical face which runs up against a fixed bearing to limit movement. 
Liner Landings These are the locating faces within the cylinder block (top, upper and lower) that secure the cylinder liner in place.
Main Journal Pocket These are the locations for the bearings which support the main journals of the crankshaft. One half of the pocket lies in the Entablature and the other half in the Main Bearing Cap.
Entablature The lower part of the structure of a Diesel Engine which usually supports the Crankshaft.
Cylinder Head The top or cap to the cylinder bore which seals off the outside world from the explosion that takes place within.
Cylinder Liner The removable part of the Engine Block which acts as a tube for the piston to run up and down and also keeps the cooling water from mixing with the oil in the sump.
Fusion Weld Welding where the Cast Iron is preheated to 600 degrees C and a filler rod made from the same material is introduced to produce a perfect stress free weld as good as the original material. The repair method is approved by LLoyds etc..
Selective Plating Selective Plating is the application of metals to the surface of other metals by the use of an electroplating action. This service is highly portable and can be used to fix scores and dents in a very wide range of equipment on site.
Keyway Machining Keyway Machining is the repair or re-introduction of slotted or milled recesses in shafts and other surfaces which locate one piece of equipment relative to another. 
Turbine Journal A Turbine Journal is the bearing area at either end of a Turbine shaft. It needs to be very accurately machined in order to minimise vibration from eccentric loads when running at several thousand RPM.
Slipring A Slipring is usually utilised as the power take off point from a generator. It rotates at the same speed as the generator and allows power to pass from the generator to the outside world via the brushgear.
Hydrogen Seal Face Hydrogen seal faces are usually a flat radial face standing proud of the turbine shaft. They are very flat and highly polished to enable an axial seal to be maintained to keep the Hydrogen atmosphere inside the generator contained.
FATT Sample A sample of metal usually taken from a turbine shaft which is then analysed to determine the "rest of life" or usefull lifetime of the shaft.
OEMs Original Equipment Manufacturers. eg. ABB, GEC, Rolls Royce, Siemens , Sulzer, Mirrlees, Wartsilla etc.. (Hit your browser Back button to return).
Kiln Tyre Kiln Tyres are normally fabricated steel tyres which fit round the circumference of the main kiln body acting as very large diameter bearings which allow the kiln to rotate.
Support Roller Support rollers sit below and revolve against the kiln tyres while supporting the weight of the kiln.
Ball Mill Ball Mills are used to break down large pieces of ceramic type material into smaller pieces or powder. A cylindrical chamber is filled with balls and rotated, the material flows through and is crushed. The bearing journals we repair at either end are therefore usually hollow to allow the product to flow in one end and out the other.
Seal Areas Seal areas on shafts are there to prevent gasses or lubricating oils from escaping and to prevent contaminants in the environment from getting in.

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