Crankshaft Grinders

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.

Robbi Crankshaft Grinders

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.

  • Wheel Head: The wheel head is coated with anti-friction material and bathed in adjustable bearings to allow free movement and minimize wear on the machine
  • Hydraulic Controls:  Increase setup and grinding speed with the rapid hydraulic wheel head and table.
  • Work Heads: With only two keys for all shifting, centering, and clamping operations indexed chucks easily change from chucks to centers and rotate 360 degrees.

Standard Line of Crankshaft Grinders

Ecotech Machine Tool offers four convention crankshaft grinding machines. 

Industrial Line of Crankshaft Grinding Machines

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


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General Information

  • Machine Types

    Conventional & CNC (Rex 4000)

  • Models

    Conventional: Rex 1200-6000
    CNC: Rex 4000

  • Distance Between Centers

    1320mm - 6000mm

  • Grinding Diameter

    180mm-500mm

  • Manufacturer

    The Robbi Group


About The Robbi Group

Robbi Cylindrical Ginders since 1936

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.


Machine Model Technical Comparison Chart

ModelDistance Between CentersHeight of Centers Over Table
Rex 1200
1230mm

220mm

Crankshaft grinding machine – Rex 1200
Rex 1500
1550mm

250mm

Crankshaft grinding machine – Rex 1500
Rex 1800
1800mm

300mm

Crankshaft grinding machine Rex 1800
Rex 1800 RM
1800mm

350mm

Crankshaft grinding machine Rex 1800
Rex 2200 L
2300mm

300mm

Crankshaft grinding machine – Rex 2200
Rex 2200 RM
2300mm

350mm

Crankshaft grinding machine – Rex 2200
Rex 3100
32000mm

400mm

Crankshaft grinding machine – Rex 3100
Rex 4000 CNC
4200mm

650mm

Crankshaft grinding machine – Rex 4000
Rex 6000
6000mm

750mm

Crankshaft grinding machine – Rex 6000

Video Gallery — Grinding Machines In Action

Technical Machine Documentation

REX

Hydraulic Crankshaft Grinders
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Site by Jason Scott Montoya.

Formerly Ecotech Machinery