Month: March 2019

Crankshaft Grinding | Crankshaft Grinding Services | Crankshaft Machining – RA Power Solutions

RA Power Solutions undertakes crankshaft repair, crankshaft grinding, and polishing onsite all over the world. The company is extending 24/7 emergency service for repair of the crankshaft of main and auxiliary engines on board a vessel or land-based installations worldwide. We are having experience of 40 years in the field of engine repair and with the latest technology in the equipment, we are considered to be the most knowledgeable company in the world. Our response time in case of emergency is unbeatable. We have developed an onsite portable, lightweight crankshaft grinding machine up to the diameter of 700 mm which is kept ready all the time to be taken on the vessel or to any Diesel Engine installation all over the world.

Grinding of Crankshaft is in Process
Grinding of Crankshaft is in Process

The client has the definite advantage of awarding crankshaft repair, crankshaft grinding, and crankshaft machining work to us as we have carried out repair of over 10000 crankshafts having serious damage and were saved from rejection. We are confident of our workmanship and design of equipment and can repair your shaft successfully without stripping it down from the engine and transporting it to the workshop.

The following procedure is adopted for successful repair of the crankshaft:

  • Calibrated and modern instruments are used to undertake preliminary inspection of the crankshaft as follows:
    1. Dimensional inspection to check taper and ovality
    2. Crack detection by MPI/ultrasound or dye penetrant
    3. Hardness test
    4. Surface test to check surface roughness
    5. Inspection to check the straightness of the crankshaft
    6. Lube oil and radius fillet profile check
    7. Visual inspection
Inspection of Crankpin Before Grinding
Inspection of Crankpin Before Grinding
Inspection of Crankpin on Board a Vessel
Inspection of Crankpin on Board a Vessel
  • All the readings and observations are recorded in the inspection format, and onsite repair planning is done in consultation with our senior Engineer.
Grinding of Crankpin is in Process
Grinding of Crankpin is in Process
  • After inspection, grinding, and repair of the crankshaft, the following parameters are achieved:
    1. Taper and ovality of the crankpin and main journal after grinding and polishing can be achieved within 0.02 mm.
    2. The lubrication oil hole and radius fillet profile can be given as per the original profile.
    3. The presence of crack and hardness readings are taken and recorded.
    4. Straightness and run-out are maintained as per the manufacturer’s specifications. A surface finish of less than 20 RA values can be maintained and achieved.
Inspection of Crankshaft After Grinding on Board a Vessel
Inspection of Crankshaft After Grinding on Board a Vessel
Crankpin After Grinding
Crankpin After Grinding

All the crankshaft grinding services, crankshaft repair, crankshaft grinding, and polishing jobs executed by RA Power Solutions are guaranteed for satisfactory performance. Price-wise, we are considered to be the lowest in the international market.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He has 44 years of experience in providing engine repair services all over the world.

For more information regarding crankshaft repair, onsite crankshaft grinding and polishing, crankshaft machining, crankshaft grinding services, and other engine repair services, please feel free to write to us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Onsite Grinding & Repair of Crankpin is in Process
Onsite Grinding & Repair of Crankpin is in Process

Crankpin Reconditioning | Crankpin Polishing and Onsite Crank pin Repair – RA Power Solutions

RA Power Solutions has now made it easy to undertake crankpin grinding, crankpin repair and crank pin polishing onsite in a short time with the lowest cost.

We undertake onsite crankpin repair, crankpin grinding and crankpin polishing of crankshaft diameter ranging from 30 mm to 700 mm. This is undertaken by lightweight, easy to operate and portable onsite crankshaft grinding machine which is taken to the site. We have team of experienced technicians having valid passport and CDC. They can travel to any destination in the world in the shortest possible time with portable crankshaft grinding equipment and can also undertake repairs while sailing of vessel. Following procedure is generally followed for successful onsite crank pin repair of crankshaft:

Crack Detection Test of Crankpin
Crack Detection Test of Crankpin
  1. Initial dimensional inspection of crankpin is undertaken by calibrated measuring instruments for taper, ovality and other parameters.
  2. Radius fillet, lubricating oil hole of crankpin is checked for any loss of profile and damage.
  3. Crack detection test by high-intensity MPI torch is undertaken by level 3 qualified technicians.
  4. Hardness check and other important parameters are checked and recorded.

After the initial inspection, in case required grinding and polishing of crankpin is undertaken to maintain the tolerances strictly as per the manufacturer’s specifications.

The onsite crankshaft grinding machine used by RA Power Solutions engineers for grinding and polishing of crankpin and crankpin repair is self-designed and is improved from time to time.

Inpection of Crankpin is in Process
Inspection of Crankpin is in Process
Onsite Inspection of Crankpin Before Grinding & Polishing
Onsite Inspection of Crankpin Before Grinding & Polishing

The combination of skilled technicians and the most modern onsite crankshaft grinding machine is used for crankpin grinding delivers and maintains the tolerances after crankpin repair which is better than the international standards and the tolerances specified by the engine manufacturers. Our company is having more than four decades of experience in successful repairs of the crankshaft of high-capacity engines used for power generation, shipping, etc.

Grinding & Polishing of Crankpin on Board a Vessel
Grinding & Polishing of Crankpin on Board a Vessel

RA Power Solutions also provides the following onsite repair services:

  • Machining and grinding of crankpin journals up to 700 mm diameter.
  • Grinding of main journals
  • Machining and grinding of crankpin fillets
  • Grinding and Machining of main journal fillets
  • Machining and grinding of intermediate shaft/tail shaft
  • Grinding and polishing of crankshaft, turbine shaft, alternator shaft, pump shaft
  • Metal stitching/metal locking of damaged casting
  • Overhauling and repair of engine.
  • Rebabbitting of old white metal bearings
Repair & Overhauling of Engine
Repair & Overhauling of Engine
Repair of Intermediate Shaft
Repair of Intermediate Shaft

Author is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in providing onsite repair services related to high capacity engines across the world. He has designed and developed the portable crankshaft grinding machine to save time and money.

For more information regarding grinding of crankshaft, onsite crank pin repair, onsite repair services and crankpin repair, please free to write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.