Our Crankshaft grinders by Robbi are used for grinding journals and crank pins to remove material and refurbish this vital engine part and expensive-to-replace unit. Usually done when rebuilding an engine, crankshaft grinding also improves engine performance.

In every high-functioning engine is a finely crafted crankshaft. Through the connecting rods, the crankshaft transfers power from the piston movement from linear to rotational. This harnessed power is used by most conventional cars, diesel marine engines, locomotive internal combustion engines, large compressors, and other heavy-duty machinery.

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

Engineered for the Machinist: Inside the Robbi REX Series

Robbi offers a line of crankshaft grinders that includes their heavy-duty industrial line. These machines are designed for high accuracy and efficient operations using workheads with 4-way cross-slides and an advanced locking system for quick crankshaft centering.

With lifetime superior accuracy and dependability, these one-piece cast iron constructed machines also deliver various configurable options to make the machine tool work best for how you need it.

• Heavy-Duty One-Piece Cast Iron Bed: Gives you vibration-free, lifetime dependability—because precision starts with the foundation.

• 4-Way Cross Slides: Features an advanced locking system that permits incredibly fast, accurate centering of the crankshaft. Less setup time means more chips flying.

• Rapid Hydraulic Controls: Hydraulic wheelhead traverse and table movement speed up your setup, while fine-feed controls guarantee sub-micron accuracy.

• Simplified Clamping: You only need two keys for all shifting, centering, and clamping operations. Switch easily from indexed chucks (featuring 360° rotation) to centers.

• Frictionless Wheelhead: Slideways are coated with anti-friction material, and the hardened steel spindle runs in a fully adjustable, oil-bathed precision sleeve bearing.

Ecotech Machine Tool offers four convention crankshaft grinding machines. 

We also offer four industrial line machines, with an option for CNC in the Rex 400 machine model.

Robbi is an industrial machine manufacturer based out of Italy and since 1936. Robbi uses materials and high-quality components to deliver the utmost precision. Most of their mechanical components are created in their machine shop.

Their company mission is to design and manufacture precision machine tools, technologically advanced, reliable, safe, easy to use, and “tailor-made” for each customer.