On-site Crankshaft Repairs

Mobile Machining for Crankshafts and more

An engine failure on a vessel or stationary power plant can cause extremely high costs and tremendous downtime. Our on-site and in-situ machining services eliminate costs and save time as disassemble, removal and transport of the damaged parts are not required. Maintenance and in-situ mechanical machining is performed on site by our competent expert personnel to help you minimize your downtime, reducing your costs dramatically.

Advantages of using MSHS On-site Services

  • Over 60 years of experience in on-site machining
  • Highly advanced tools utilized for onsite crankshaft repairs
  • Customized tools adapting to all engine makes and models
  • Minimizing engine downtime using mobile machining tools
  • 24/7 international emergency crankshaft repairs
  • Crankshaft damage assessment within 24 hours
  • On-site heat treatment to eliminate extreme hard areas caused by bearing failures on crankshaft journals
  • Cost saving since engine disassemble and crankshaft replacement not required

Mobile Industrial and Marine On-Site Machining

MSHS On-site Services is known all over the world for on-site mechanical machining and for in-situ motor overhaul. MSHS is a highly recognized expert for the reconditioning of diesel, gas, and dual fuel engine components such as crankshafts, liner landing and sealing surfaces and main bearing pocket line boring.

On-site Crankshaft Repairs

When the journal surface is damaged by a bearing failure, the crankshaft is usually removed and machined on a stationary crankshaft grinding lathe causing dismantling and transport costs as well as asset downtime. With our on-site machining tool, we offer on-site crankshaft journal repair, repairing the journal on-site, without disassembling the engine and the need to transport the crankshaft to the ashore workshop facility.

Our on-site machining tool uses the fillet radii of the crankpin as a reference for adjusting the on-site repair machine. In case these fillet radii are damaged or not centered on the central axis, MSHS has developed a special machining method and the necessary devices to enable the processing of crankpins and main bearing journals to restore them in accordance with the manufacturer’s tolerances.

With this method, the fillet radii are first machined, then the damaged journal. It is necessary that the mobile device is as precisely as possible adjusted to the baseline of the crankshaft using specialized electronic measuring instruments. This method can even be performed at sea, on-site on your vessel.

Mobile Machining

Since we have a large number of special transportable mobile machining tools and or appropriate machines at our disposal, we are able to implement all types of mechanical machining in the field or on-site. The advantages of mobile machining include minimal disassembly and transport costs of large and heavy parts. On-site machining reduces downtime and saves you time and money.

Completing repairs on diesel, gas, and dual fuel engines, auxiliary generators, and other equipment is always time-critical. This being the case, our teams can be on duty 24 hours a day. All techniques, e.g. milling, turning, boring, optical device-guided boring alignment, grinding, and honing can be executed on-site with our equipment. Our devices are designed so that they can be used on-site, in the smallest of spaces.

Facing Work

Plane surfaces that are no longer flat and therefore cause leakages, e.g. at flanges or damages at live rings, are mechanically machined on-site with mobile turning devices. The requirements for the tolerances are restored in the process.

Boring Work

Bearing channels, bores, turbine housing, threads, etc. are mechanically processed on location with transportable drills and turning devices in order to ensure the required tolerances.

Milling Work

Presses, roll housing, turbine housing, machine foundations etc. that are no longer in accordance with the technical requirements are mechanically processed on-site through mobile milling units. The tolerances demanded are thus restored. Shaft and journal processing journals, crankpins, shafts etc. are turned and ground on location with mobile turning devices in order to restore the required tolerances.

Grinding Work

Ball races on rotary kilns, paper or other cylinders etc. that no longer correspond to the geometrical prerequisites are turned and ground with our mobile grinding devices so that they again meet the requirements.

Sawing Work with Mobile Saws and Diamond Band Saws

The cutting of large cross-sections is often very time-intensive. We thus offer various saws for mechanical machining. The positive aspect lies in the fact that large cross sections are split while saving time and without the need for heat input.

Surveying Work

It is often unclear as to whether damage to a machine has resulted from a geometrical fault. We offer a variety of measuring devices that are employed before, during, and after processing. Included in these, among others, are lasers and optical devices for measuring center lines and surfaces. An engine failure on a vessel or stationary power plant can cause extremely high costs and tremendous downtime. Our on-site and in-situ machining services eliminate costs and save time as disassembling, removal, and transporting of damaged parts are not required. Maintenance and in-situ mechanical machining are performed on site by our competent expert personnel to help you minimize your downtime, reducing your costs dramatically.


The repair of broken, cracked, or damaged cast parts is always a great challenge since cast iron is only weldable to a limited extent. Thanks to the procedure that we apply, we can offer an attractive alternative, which nowadays is the preferred method used in industry and marine shipping.

Welding Repairs

Cracks in various machine parts made of steel and steel casting are generally repaired by caulking, grinding, or milling on-site and then welded by preheating. The most widely used welding process for such work is the manual arc welding method. During and after welding, additional heat treatments are generally needed.

Machine Overhaul

Reconditioning and repairing presses and machine tools made by the widest variety of manufacturers. This includes presses of all tonnages, grinders, milling machines, boring mills, and turning machines of any size. Well-informed, trained experts are available to provide these services for you, either in our workshop or on-site. Support of the mechanics from a large machinery department is always ensured.

Mechanical Manufacturing

Our workshop is equipped with the widest variety of cutting machines, which allows for flexible and professionally qualified manufacturing.

Machines and production equipment are often utilized to their capacity limits. In the event of damage, the problem of having to acquire spare parts can arise. As an alternative solution, we can offer you the rapid manufacture of replacement parts based on samples or sketches.

Of course, we also offer the remanufacturing and repair of components, as well as the realization of manufacturing segments of any kind.

Ready to serve you

Full service locations in Southeast, the Gulf Coast, and the Pacific Northwest, plus a network of local representatives throughout the Americas and the Caribbean.

Estamos disponible para servirle
Instalaciones de servicio completo en el Sureste; Costa Noroeste, y El Golfo. Además una red de agentes en
América Latina y el Caribe.

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Specializing in turnkey engine services, control systems, and engineered solutions for the Marine, Industrial, Energy, and Defense/Government Sectors, MSHS is ready to serve you!