At RA Power Solutions, we deliver expert crankshaft grinding and repair services for marine engines, automotive engines, industrial machinery, pumps, and compressors. Our precision machining ensures optimal performance, extended lifespan, and reliable operation of your critical equipment.
Crankshaft Machining Expertise
The crankshaft is the backbone of engines and rotating machinery, comprising the main journal and crank pin. Our specialized grinding and polishing services restore these components to OEM specifications, ensuring smooth operation and durability.
Rigorous Inspection & Quality Assurance
Every crankshaft undergoes comprehensive testing before and after repair to guarantee safety and performance. Our inspection process includes:
Magnetic Particle Inspection (MPI) – Detects surface and near-surface flaws
Hardness Testing – Ensures material integrity
Surface Roughness Testing – Verifies optimal finish for reduced friction
Precision Grinding & Polishing
Our advanced grinding and polishing services deliver:
High dimensional accuracy
Superior surface finish
Strict adherence to OEM tolerances
Polishing removes bearing line marks and enhances surface quality for smoother operation.
Crankpin Polishing Onsite
Advanced Workshop Capabilities
Our state-of-the-art machine shop handles diverse crankshaft repairs, including:
Crankshaft straightening
Seal area rebuilding (using sleeves or metal spray technology)
RA Power Solutions is a manufacturer of on site crankshaft grinding machine ranging from 35 mm to 700 mm. The crankshaft grinding machine is light in weight, compact, and can easily be taken to the site for grinding and polishing of crankshaft and cylindrical shafts up to the diameter of 700 mm.
Crankshaft Grinding Machine with Pneumatic Motor
We have sold more than 70 onsite crankshaft grinding machines all over the world, we understand the importance of training and the essential skills involved in the operation and maintenance of the machine. We ensure that the client’s technicians are thoroughly briefed about the operation and maintenance of the equipment.
The training is given at our works or at the client’s site. We prefer in case the training is provided at client’s site. The following points are covered during the training on the operation and maintenance of the crankshaft grinding machine.
I) Safety:
a) Safety is a very important aspect and technicians are briefed to wear safety glasses, gloves, safety shoes, etc.
b) Keep all parts of the body away from the moving parts of the machine
II) Brief explanation of the main parts of the crankshaft grinding machine
The details and function of all the parts of the grinding machine are explained to the client’s team so that they can easily grind the shaft without any hassle and maintain the tolerance of the crankpin and main journal as per engine manufacturer guidelines.
III) Operation of the machine:
Training on Operation of Crankshaft Grinding Machine
All the technical aspects involved in the operation of the machine are explained including the control system, the process of grinding, and complete operation.
IV) Maintenance:
The maintenance of the machine for the long life and smooth operation is of great importance. All the aspects related to day-to-day maintenance are explained.
The onsite crankshaft grinding machine manufactured by RA Power Solutions is designed to have minimum vibration resulting in maintenance of close tolerance in terms of taper and ovality within 0.02 mm or depending on the diameter of the crank pin and main journals. The pneumatic motor used as a drive for the crankshaft grinding machine needs clean air without moisture at a pressure of 7 kg/cm2 and 90 CFM.
Crankshaft Grinding Machine Packed in an Aluminium Box
It is important that the moisture in the air is kept controlled and maintenance of the pneumatic motor is undertaken periodically as per the instruction manual provided by the manufacturer. The storage and the transportation of the machine to the site are generally done in the large toolboxes made out of aluminum and powder coated. In certain cases due to the weight restriction, the machine is also carried in large suitcases. In that case, the machine is properly packed in order to avoid any damage during the movement of the machine from one site to another.
Brief Explanation On Main Parts of the Crankshaft Grinding Machine
Training on Safety and Maintenance of Grinding Machine
The author of the blog is Mr. Raj Shahani (Managing Director of RA Power Solutions). He is having forty years of experience in the field of repair and overhauling of engines. He has developed an onsite crankshaft grinding machine to save enormous time and money for the client.
