RA Power Solutions is having more than forty years of experience in reconditioning of Crankshaft of large marine engines and engines installed in Power plants.
The onsite crankshaft repair and grinding is undertaken by RA Power Solutions experienced technicians for diameter ranging from 30 mm to 700 mm which cover almost all the crankshafts used for different applications. It is generally observed that due to non-experience or lack of knowledge of the companies undertaking reconditioning of Crankshaft misguide the end users resulting to serious breakdown and considerable higher expense.
RA Power Solutions has undertaken reconditioning of Crankshaft exceeding ten thousand numbers and recommends following situation for reconditioning of the Crankshaft.
Recommendation for reconditioning of Crankshaft:
I.) It is recommended to undertake Crankshaft repair in case taper and ovality exceeds the limit specified in Maintenance manual of engine manufacturer.
II. ) In case due to accident, deep line marks or depression is developed.
III. ) Reconditioning of Crankshaft is recommended in case higher hardness is observed due to seizer of bearings or any other reason.
IV.) Development of surface crack
V.) Loss of alignment.
VI.) In certain cases, although the dimensions of CR Pin and Main Journal are observed within the limit, but due to rough surface observed on Cr Pin and of Main Journal, surface require polishing.
Above suggestions are given for reconditioning of Crankshaft. It is always advisable to send photographs and brief Inspection report to RA Power Solutions for free recommendation as how to repair Crankshaft successfully.
For more information, please email us on firstname.lastname@example.org or call us on +91-9582647131
Onsite Crankshaft Repair | Crankshaft Grinding | Crankshaft Reconditioning is undertaken by RA Power Solutions Pvt Ltd for last four decades. The company has technicians who are trained to undertake Onsite Crankshaft Repairs strictly as per manufacturers specifications stipulated in the manual.
All technicians have valid CDC and can travel in a short notice anywhere in the world to board the vessel. The Onsite Crankshaft repair and onsite crankshaft grinding equipment used by RA Power Solutions has a main structure manufactured out of Titanium steel which results to absorption of Vibration while the Crankshaft Grinding machine is in operation in high seas with turbulence. The quality after the reconditioning and repair of Crankshaft is of Great Importance and is maintained. Following checks are undertaken.
Quality of a Re-Machined Pin or Journal
The quality of a pin or journal after machining has to meet following requirements:
I) Geometrical tolerance in accordance with manufacturer specifications.
II) A blueing check has to be carried out on the re-machining surface. Blueing Shells: Min. Width equivalent to Journal or Crank-pin dimensions respectively. Min. Length equivalent to 1/5 of Journal or crank-pin circumference.
III) Required contact area: Min. 35% equally distributed over width and circumferences.
IV) Free of hairline cracks: Journal or crank pin to be tested by mean of Magnetic Particle crack detection method.
V) Free of Martensite: The microstructure is to be tested for edged areas of martensite structure will replicas or micro etching with 5% nitric acid in alcohol ( Nital) applied to the pin after polishing.
VI) Maximum admissible hardness of remaining local hardspots : However such local hardspots are not tolerated around the fillets and the bores for lubrication.