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- October 27, 2025
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RA Power Solutions is the world’s leader in the development, manufacturing, and supplying of onsite crankshaft grinders. We have already sold worldwide More than 100 onsite crankshaft machining equipment ranging from 35 mm to 700 mm in terms of diameter. Ours is the first company in the world that has changed the concept of crankshaft repair by making it simple and easy.
Companies based in Europe, the UK, and Singapore projected on-site crankshaft grinding and onsite crankshaft repair to be difficult and charged an exorbitant amount towards the repair from shipping companies, diesel power plants, and the industry using rotatory equipment. With the introduction of onsite portable, lightweight crankshaft grinding machines, the companies are saving considerable amounts towards the cost of repairs and maintenance of crankshafts and engines in totality.
We have sold more than 100 crankshaft grinders to the shipping companies, industries, and repair workshops that have broken the monopoly of the European companies by offering on site crankshaft grinding and crankshaft polishing services with international standards and at low prices.
The crankshaft repair is recommended in case of the following problems:
- In case of bearing failure, bearing material gets stuck to the crankshaft surface.
- Overheating of crankpin and main journal which is evident by black/blue discoloration and development of local hard spots.
- Development of taper and ovality higher than the limits specified by the manufacturers.
- Dents and scoring on the crankpin or the fillet radius.
- Heat cracks
The onsite crankshaft grinding machine developed and manufactured by RA Power solutions is capable of repairing of crankshaft having all the problems including the problems mentioned above.
The on site crankshaft grinding and polishing machine has the following features:
- Lightweight, portable, and can be easily taken to the site all over the world.
- Machine is presently available in the range of 35 mm to 700 mm diameter. A higher range of machines is under development. Options for pneumatic and electric drives are available.
- We supply the machine in powder-coated steel boxes. We also add clamps to hold the machine securely and prevent damage during transit from one site to another.
- Large information on the crankshaft of the popular engine and their model is shared with the client.
- Free training on-site is provided for the operation and maintenance of the crankshaft grinders.
For any information on onsite crankshaft grinding machine exporter, onsite crankshaft grinder manufacturer, and onsite machining of crankshaft, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
FAQs:
It is a portable, lightweight grinding & polishing unit designed to repair crankshafts (or other cylindrical shafts) directly at site — without removing them from the engine block.
The machines handle shaft/journal diameters from 35 mm up to 700 mm. Larger sizes are under development.
Bearing material stuck to journals, overheating discoloration, taper or ovality beyond limits, dents, scoring, fillet damage, heat cracks — basically most common crankshaft journal damages.
Yes. The grinding and polishing machines maintain tight tolerances (taper/ovality within ~0.02–0.03 mm depending on shaft size) and produce smooth surface finish (below ~0.15 RA), meeting OEM tolerances.
Major benefits include: no engine or shaft disassembly; drastic reduction in downtime; savings on logistics, transport and labour; fast turnaround; and avoidance of risks associated with heavy shaft handling.