CNC Crankshaft Grinders

At the heart of every engine is a finely tuned crankshaft. This part transforms the piston movement (via the connecting rods) from linear to rotational. And this movement is what powers diesel marine engines, locomotive internal combustion engines, large compressors, and other heavy-duty machinery.

CNC Crankshaft grinding machines are used for grinding journals and crank pins to remove material and refurbish the expensive yet vital part of an engine. Crankshaft grinding is usually done when rebuilding an engine, and it also provides performance enhancements.

Machine Photo Gallery

Robbi Crankshaft Grinding Machines

In addition to our standard Ecotech Machinery crankshaft grinders, we also offer the line of Robbi crankshaft grinding machines, including their industrial application line. Designed for the most accurate and efficient operation, Robbi's machines use work heads with 4-way cross slides and an advanced locking system (allowing quick crankshaft centering).

This heavy-duty one-piece cast iron construction delivers a lifetime of superior accuracy and dependability. With a variety of machine variations, Robbi has differently configured options to provide the tool you need for your specific application.

• Wheel Head: To obtain free movement and minimize wear, the wheel head is coated with anti-friction material and bathed in adjustable bearings.
• Hydraulic Controls: The rapid hydraulic wheel head and table increase setup and grinding speed.
• Work Heads: Indexed chucks rotate 360 degrees with an easy change from chucks to centers. There are only two keys for all shifting, centering, and clamping operations.

Crankshaft Grinder Application

Our crankshaft grinders are suitable for single-piece runs and for production lots.

Standard Machine Models

• CGC25 - Max. O.D. Swing = 23.60"
• CGC32 - Max. O.D. Swing = 31.40"
• CGC40 - Max. O.D. Swing = 39.30"
• CGC50 - Max. O.D. Swing = 49.20"
• CGC60 - Max. O.D. Swing = 63.00"

Robbie Machine Models

• REX1200 - 
• REX1500 -
• REX1800 or REX1800RM -
• REX2200L or REX2200RM -

Robbi Industrial Line Crankshaft Grinders

• REX2700 - 
• REX3100 - 
• REX4000 -
• REX6000 -

Technical Details Comparison

Click the PDF icon below to download the technical comparison chart.

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  Vertical Rotary Grinders

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  ALPA Surface Grinders (Manual and CN)