Crankshaft Grinding Machine Supplier | In Situ Crankshaft Grinding

Crankshaft Grinding Machine Manufacturer | Insitu Crankshaft Grinding Machine Supplier | Crankshaft Repair

RA Power Solutions has been manufacturing and supplying crankshaft grinding machines for over four decades, backed by practical experience in onsite crankshaft grinding and repair of marine engines, power plants, and industrial equipment. The knowledge gained from carrying out thousands of in-situ machining assignments has been incorporated into the design of our machines, making them suitable for precision crankshaft grinding where dismantling the engine is not practical.

Lightweight, Portable Onsite and In-Situ Crankshaft Grinding Machine

Our crankshaft grinding machine was developed after years of practical field experience carrying out in situ crankshaft repairs on marine engines, power plants, and industrial equipment. We needed a machine that could be transported to the vessel or installation, assembled inside the crankcase, and perform precision grinding without removing the crankshaft from the engine.

In our experience, avoiding crankshaft removal is often the deciding factor in reducing vessel downtime. Whether the repair is carried out alongside, at anchorage, or during a scheduled maintenance period, an in-situ solution eliminates dismantling, transportation, and reinstallation of the crankshaft while maintaining OEM dimensional tolerances.

Our crankshaft grinding machine was developed after years of practical field experience carrying out in situ crankshaft repairs on marine engines, power plants, and industrial equipment. We needed a machine that could be transported to the vessel or installation, assembled inside the crankcase, and perform precision grinding without removing the crankshaft from the engine.

For companies requiring complete repair support, the machine is also used during our in situ crankshaft grinding and crankshaft repair services, where journal measurements, machining, polishing, and final inspection are completed onboard.

Onsite Crankshaft Grinding Machine

Design Features of the Crankshaft Grinding Machine

Portable Construction for Onboard Use

Access inside an engine crankcase is always limited. The machine is lightweight and portable, allowing technicians to transport it easily to the repair location and install it within confined spaces.

Pneumatic Drive System

The crankshaft grinding machine is pneumatically driven, providing reliable power output while operating safely inside marine engine crankcases and other restricted work areas.

Grinding and Polishing with One Machine

The same machine performs both grinding and polishing operations. This reduces equipment handling during repairs while enabling the required Ra surface finish before the crankshaft is returned to service.

Precision Machining within OEM Tolerances

During crankshaft machining, maintaining journal geometry is critical. We continuously monitor journal dimensions throughout the grinding process to control ovality, taper, and the fillet radius while remaining within OEM regrind limits.

When required, the repaired journal is prepared for installation of the correct undersize bearing shells, ensuring proper hydrodynamic lubrication after the engine is recommissioned.

Available Machine Capacity

Our crankshaft grinding machine can be supplied for crankshaft diameters ranging from 60 mm to 700 mm.

The machine has been designed specifically for onsite crankshaft grinding where removing the crankshaft from the engine is either impractical or uneconomical.

Operator Training and Technical Support

Insitu Crankshaft Grinding Machine

Workshop Training

Before delivery, we provide practical training at our workshop using a crankpin model. This enables operators to understand machine setup, alignment, accessories, grinding procedures, and operational checks before working on an actual engine.

Onboard and Site Training

We also provide training for operators on vessels and at land-based facilities to ensure safe and effective operation of the machine during actual repairs.

Proven Performance Worldwide

We have supplied more than 75 crankshaft grinding machines worldwide, and they continue to perform satisfactorily across marine, power generation, and industrial applications.

The machine operates without vibration, helping maintain journal geometry while minimizing the possibility of taper and ovality during machining.

Portable Crankshaft Grinding Machine for Small Diameter Crankshafts

Onsite Grinding from 30 mm Diameter

For smaller crankshafts, we also supply a portable crankshaft grinding machine capable of grinding and polishing crankshafts having diameters of 30 mm and above.

The machine allows repairs to be completed without removing the crankshaft from the engine block, reducing maintenance time and lowering repair costs.

Typical applications include the following:

Earth-moving equipment
Compressors
Rotatory equipment
Heavy bulldozers
Forging equipment
Construction equipment
All crankshafts having a diameter of 30 mm and above

Related Services

Many customers purchasing or operating our crankshaft grinding machine also require technical assistance for complex repairs. We regularly provide the following:

In-Situ Crankshaft Grinding
Crankshaft Repair
Crankshaft Inspection and Measurement
Crankshaft Polishing
Engine Overhaul Services

Onsite Machining Services

These services are carried out onboard vessels, at power plants, and at industrial installations where dismantling the engine is not practical.

Contact RA Power Solutions

For more information regarding our crankshaft grinding machine, onsite machining solutions, operator training, or technical support, please contact the following:

Email: rajshahani@rapowersolutions.com, info@rapowersolutions.com

Phone: +91 9582647131, +91 9810012383