Skip to main content

Robbi Internal Grinders (ID) — CNC & PLC

These internal grinding machines offer excellent versatility, high levels of quality, batch size flexibility, easy workpiece presetting, and effective complex component processing.

Internal grinding is an abrasive form of machining that uses a rough grinding wheel to cut through a variety of hard materials. This machine is a great option for grinding the internal diameter of a workpiece.

All of our Internal Grinders have heavy aged cast iron construction precisely machined and scraped by hand. Expect many years of problem-free operations and high accuracy due to the Hydro-Static lubrication system on the table.

Omicron IGR — PLC or CNC

With excellent versatility and high-quality standards, the IGR 250 and 600 provide small batch production of workpieces in manual or semi-automatic modes. You can even craft a single workpiece.

On machine-setup, the workpiece presetting is configured and then you're set to produce. Produce quickly and precisely, even when dealing with complex components, and take advantage of more sophisticated functions with machine upgrades.

Omicron IGU CNC

If your production is seeking high precision grinding, the CNC IGU 400 is the machine you're looking for. With up to 4 grinding spindles on the rotating turret, this CNC motor-controlled machine and software interpolation 2-axis allow various ray adjustments, customized to your production requirements. Also, tap into roller linear guides (for maximum rigidity), a granite base (low thermal expansion), an incremental linear encoder (dampens vibrations), and axis movement via the high precision re-circulating ball screw.

Machine Model Technical Comparison Chart

ModelHeight of Centres Over Table Workhead Rotation Speed
IGR 250
180/230 mm

0-400 RPM

Internal Grinding Machine Omicron IGR 250
IGR 600
180/230 mm

0-400 RPM

Internal Grinding Machine IGR 600
325 mm

0-800 RPM

Internal Grinding Machine IGU CNC 400

General Information

  • Machine Types

    Semi-Automatic (PLC) & CNC

  • Models

    IGR (250 + 600) & IGU

  • Height of Centres Over Table

    180mm - 325mm

  • Max. Table Speed

    4,000mm/min - 10,000mm/min

  • Manufacturer

    The Robbi Group

Internal Grinding Components

grinding machine component,Measures and Control

Measures and Control

grinding machine component,Grinding Dressing Wheel

Grinding Dressing Wheel

grinding machine component, Operator Panel

Operator Panel

Cylindrical Grinding Machine Tailstock


cylindrical grinding machine Wheelhead


cylindrical grinding machine workhead


cylindrical grinding machine Internal Grinding Spindle

Internal Grinding Spindle

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.

More About The IGR-250 Robbi Internal (ID) Grinder — CNC & PLC

Are you worn out and struggling with your current internal grinding process?

Do you wish for a solution that provides unparalleled precision, efficiency, and control?

Look no further!

Ecotech Machine Tool is thrilled to introduce you to the Robbi Omicron IGR 250, the ultimate internal grinding machine designed to transform your manufacturing operations.

Unlocking a new realm of possibilities, the Robbi Omicron IGR 250 boasts cutting-edge features and state-of-the-art technology. With its Siemens TP 700 touchscreen control, this machine equips operators with a seamless user experience and unmatched control over internal grinding operations.

Key Features of the Robbi Omicron IGR 250:

  • Impressive Grinding Capacity: The IGR 250 offers a maximum grinding diameter of 9.80”, allowing you to tackle a wide range of workpieces with ease. Additionally, the optional maximum swing of 17.90” enables you to accommodate larger components without compromising precision or performance.
  • Belt-Driven Internal Grinding Spindle: Equipped with a powerful belt-driven internal grinding spindle, the IGR 250 achieves a remarkable 27,000 RPM, ensuring fast and precise grinding results. Say goodbye to time-consuming grinding processes and welcome enhanced productivity into your workshop.
  • Siemens TP 700 Touch Screen Control: The intuitive Siemens TP 700 touch screen control system brings a new level of simplicity and efficiency to your operations. Its user-friendly interface allows operators to program and monitor the grinding parameters effortlessly, ensuring precise and consistent results every time.
  • Unmatched Precision and Versatility: The Robbi Omicron IGR 250 is engineered to deliver exceptional precision, allowing you to meet the most demanding tolerances and specifications. From small-scale production runs to complex components, this machine is your gateway to unparalleled versatility and top-notch quality.
  • Enhanced Safety Features: Your operators' safety is our top priority. The IGR 250 is equipped with advanced safety measures, including protective enclosures, emergency stop buttons, and intelligent fault detection systems. Experience peace of mind as your team operates in a safe and secure environment.

When it comes to internal grinding, the Robbi Omicron IGR 250 is in a league of its own. Whether you're in the automotive, aerospace, or general engineering industry, this machine is tailored to elevate operational grinding capabilities and drive your business forward.

Don't miss out on this game-changing solution!

Contact us today (770-279-2001) to schedule a personalized demonstration of the Robbi Omicron IGR 250. Let us show you how this remarkable machine can transform your internal grinding process and help you stay ahead of the competition.

Precision, efficiency, and control are just a phone call away.

Technical Machine Documentation


Universal Cylindrical Grinding Machines