In-Situ Machining Solutions (UK) Ltd offer a crankshaft repair service consisting of highly trained and motivated teams of supervisors and craftsmen in the refurbishment of crankshaft, crankpin and main journal bearings on land sites and on board sea going vessels and off-shore anywhere in the world.

The company has a full range of orbital turning, grinding, honing and superfinishing machines to cover all forms and sizes of crankpin (big end/large end) and main journal bearings of any four and two stoke diesel engines.

Crankshaft failures occur for many reasons, poor maintenance, detachment of balance weights, crankcase explosions, lubrication starvation etc.

Very often crankshafts are very badly damaged seemingly beyond repair, this company has the ability to machine crankpin and main bearing to 20mm undersize and more removing localised induced hardening (up to HB650) and peen straightening bent shafting.

Our personnel are used to the rigours of travelling and performing in all corners of the globe in varying climatic and adverse working conditions.

  

The teams have the most advanced design machine tools and measuring equipment in pursuit of excellence in this very exacting and precise on site crankshaft refurbishment activity.

Our company works closely with OEM’s and end user engineers and managers to ensure that all in-situ machining projects are managed well and that all engineering working tolerances are fully met.
 
 

Peen straightening a bent shaft

  

End result after removing 17mm on Ø
     
 

Machining by tooling method (not grinding).
For fast stock removal

  

Blackstone K Major machined back to
makers standards
     
 

Setting false ring with computerised levels at sea due to damaged fillet radii

    
     
 

Machining in progress on heat affected pin, distinguished by the shiny areas

  

Superfinishing operation in progress
     
 

Crack detection by Magnaflux

  

Inspection using Equotip to detect hardness
     

 

Damaged Ø and keyway of a timing gear journal

  

Machining of journal Ø in progress
     

 

Milling of new keyway

  

Completed Ø and keyway
     

Finished journal back to standard
     

CRANKPIN REPAIRS

  • Full range of equipment for Orbital machining, superfinishing and polishing journals in the range 100mm to 1075mm in diameter
     

  • Shaft straightening can also be performed using the OEM recognised method of Peene straightening
     

  • Quality in accordance with OEM tolerances, i.e. for Crankshaft Journals 0.15mm/metre straightness to shaft axis, 0.02mm roundness and parallel. Surface finish better than 0.2µm Ra
 
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