USED DMG MORI IGV-3N

The DMG MORI IGV-3N is a compact, high-rigidity CNC vertical internal grinding machine designed for precision machining of small to medium-sized components. Developed by Taiyo Koki under DMG MORI, it is part of the IGV series focused on high-efficiency production grinding with excellent accuracy, repeatability, and space-saving design. The machine is widely used in industries such as automotive, bearing manufacturing, hydraulic components, and precision engineering, where internal diameter (ID) grinding with tight tolerances is required.

The IGV-3N offers a swing diameter of 380 mm and a maximum grinding diameter of 250 mm, with a maximum workpiece height of 300 mm and grinding length of 150 mm. It is capable of handling workpieces up to approximately 200 kg, making it suitable for small to medium precision components in mass production environments. The work spindle operates at speeds up to 800 rpm, while the grinding spindle typically reaches up to 18,000 rpm, enabling high-speed internal grinding with excellent surface finish quality.

A key advantage of the IGV-3N is its vertical structure, which improves rigidity and simplifies workpiece setup. Gravity-assisted positioning helps achieve stable clamping with reduced distortion, improving roundness accuracy to sub-micron levels in optimized conditions. The machine is designed for high-volume production and supports consistent machining quality across long production cycles.

The IGV-3N is equipped with a turret-type wheelhead capable of handling multiple grinding operations, enabling internal, external, and face grinding depending on configuration. Optional automation systems such as loaders, robots, and stockers further enhance productivity and reduce manual intervention. Additional features include in-process measurement systems, automatic dressing, and scale feedback options for improved accuracy.

Overall, the IGV-3N is a compact yet highly precise grinding solution, combining high-speed spindle technology, rigidity, and automation readiness for efficient mass production of precision components.

DMG MORI IGV-3N SPECIFICATIONS

WHY BUY USED DMG MORI IGV-3N

Buying a used DMG MORI IGV-3N is a smart choice for manufacturers who want high-precision internal grinding capability at a significantly lower investment cost. One of the biggest advantages is affordability. New vertical grinding machines from DMG MORI are expensive due to advanced spindle systems, automation options, and precision engineering, but used machines provide similar performance at a much lower entry price.

Another important advantage is reliability. The IGV-3N is built with a rigid vertical structure designed to maintain accuracy over long production runs. Because internal grinding involves relatively low cutting forces, mechanical wear is generally limited compared to milling or turning machines. This allows well-maintained used machines to continue delivering high precision for many years.

Cutting time (machine hours) plays a critical role when evaluating a used IGV-3N. Machines with lower grinding hours typically have better spindle condition, higher accuracy, and longer remaining service life. However, even high-hour machines can be a good investment if they have undergone proper maintenance, such as spindle refurbishment, bearing replacement, or CNC system upgrades. Maintenance records often matter more than the machine’s age.

Another benefit is faster deployment. Used machines are usually available immediately or with short lead times, unlike new equipment which may take months. Many used IGV-3N machines also include automation systems, measurement devices, or tooling packages, reducing setup time and additional investment.

Depreciation also works strongly in favor of buyers. High-end grinding machines lose value over time while retaining functional capability. This makes the IGV-3N especially attractive for companies expanding production capacity, improving precision machining capability, or entering internal grinding applications without major capital expenditure.

HOW MUCH DOES A USED DMG MORI IGV-3N COST?

The cost of a used DMG MORI IGV-3N varies depending on manufacturing year, machine condition, cutting hours, spindle wear, and included automation or tooling. As a compact high-precision internal grinding machine, it is generally positioned in the lower-to-mid price segment of the used CNC grinding market.

For machines manufactured before 2000, prices typically range from $15,000 to $45,000. These units often have higher cutting hours and may require refurbishment such as spindle rebuilding, bearing replacement, or CNC control upgrades. However, they can still be useful for lower-volume production or less demanding precision applications if properly maintained.

Machines from the 2000–2010 period generally range between $40,000 and $90,000. These versions often include improved control systems and better spindle stability. At this stage, cutting time becomes a major pricing factor—machines with lower operating hours or recent rebuilds command higher resale values due to improved reliability and accuracy.

For newer machines manufactured between 2010 and 2025, prices can range from $90,000 to $180,000 or more, especially if they include automation systems such as loaders, in-process measurement, or upgraded high-speed spindle configurations. These machines are ideal for high-volume precision production environments requiring consistent accuracy and uptime.

Cutting time is one of the most important pricing drivers. A low-hour IGV-3N typically commands a premium because of better spindle health and reduced maintenance risk. High-hour machines may require additional investment in servicing or retrofitting, which should be factored into total ownership cost. Installation, tooling, and calibration costs should also be considered when evaluating total investment. Overall, the IGV-3N remains a strong value proposition in the used market, offering high-speed internal grinding performance at a relatively accessible price point.