USED DMG MORI NVGH-22T

The DMG MORI NVGH-22T is an ultra-large CNC vertical multi-process grinding machine designed for machining very large, heavy, and high-value components with exceptional precision. As one of the largest machines in the NVGH series developed by Taiyo Koki under DMG MORI, it is engineered for industries such as energy, aerospace, heavy equipment, and industrial manufacturing, where oversized components like turbine casings, large bearings, and gear assemblies require tight tolerances and superior surface finishes.

The NVGH-22T features a swing diameter of approximately 2,200 mm and a maximum grinding diameter of around 2,000 mm, with a maximum workpiece height of up to 1,000 mm and grinding length approaching 800 mm. It is capable of handling extremely heavy workpieces, often up to 8,000–10,000 kg, making it suitable for some of the most demanding grinding applications. The work spindle typically operates at speeds up to 60–80 rpm, while the grinding spindle can reach around 4,000–6,000 rpm, ensuring stable and controlled machining even for very large diameters.

A major strength of the NVGH-22T is its ability to perform multiple grinding processes—internal (ID), external (OD), and face grinding—in a single setup. This reduces setup time, improves productivity, and enhances accuracy by eliminating multiple clamping operations. The machine is equipped with a high-rigidity turret-type wheelhead with continuous B-axis indexing, allowing precise angular positioning for complex geometries.

The NVGH-22T also supports advanced capabilities such as an optional direct-drive C-axis for ultra-precise indexing (up to 0.0001° resolution), enabling non-round grinding applications like cams and polygonal shapes. Automation options, including pallet systems, robotic loading, and in-process measurement systems, further enhance productivity and allow for semi- or fully unattended operation. Overall, the NVGH-22T is a heavy-duty, high-precision grinding solution tailored for large-scale industrial applications requiring maximum capacity and accuracy.

DMG MORI NVGH-22T SPECIFICATIONS

WHY BUY USED DMG MORI NVGH-22T

Purchasing a used DMG MORI NVGH-22T is a highly strategic decision for manufacturers dealing with large-scale components but looking to avoid the extremely high cost of a new machine. One of the biggest advantages is cost efficiency. Machines of this size and capability represent a major capital investment when new, but used units can deliver similar performance at a fraction of the price, making them far more accessible for many operations.

Another key benefit is durability. Machines produced by DMG MORI are known for their heavy-duty construction and long service life, and the NVGH-22T is specifically designed to maintain rigidity under very high loads. Because grinding involves relatively low cutting forces compared to milling or turning, structural wear is minimized. This allows older machines to retain their accuracy and functionality when properly maintained, even after years of operation.

Cutting time, or machine hours, is one of the most critical factors when evaluating a used NVGH-22T. Machines with lower grinding hours generally offer better spindle condition, improved axis accuracy, and longer remaining life. However, high-hour machines can still be a strong investment if they have been properly serviced or refurbished, such as through spindle rebuilding, replacement of scale feedback systems, or CNC upgrades. Maintenance records and service history often carry more weight than the manufacturing year.

Another advantage is availability. Used machines can often be sourced and installed much faster than new equipment, which may involve long lead times due to customization and size. Many used NVGH-22T units also include tooling, fixtures, or automation systems, reducing additional investment and accelerating production readiness.

Depreciation also benefits the buyer. Large CNC grinding machines lose significant value over time while maintaining their core capabilities. This makes a used NVGH-22T an excellent option for companies looking to expand capacity for large-part grinding without a major upfront investment.

HOW MUCH DOES A USED DMG MORI NVGH-22T COST?

The cost of a used DMG MORI NVGH-22T varies significantly depending on factors such as manufacturing year, machine condition, cutting hours, configuration, and included automation systems. As one of the largest and most advanced vertical grinding machines available, it sits at the very top end of the used CNC grinding market.

For machines manufactured before 2000, prices typically range from $100,000 to $250,000. These machines often have very high cutting hours and may require extensive refurbishment, such as spindle rebuilding, control upgrades, or replacement of feedback systems. However, they can still be suitable for less demanding applications or lower production volumes if properly restored.

Machines from the 2000–2010 period generally fall within the $220,000 to $500,000 range. These units often feature improved CNC controls and may include early automation capabilities. Cutting time is a key pricing factor in this category—machines with lower hours or documented refurbishment can command significantly higher prices due to improved reliability and performance.

For newer machines manufactured between 2010 and 2025, prices can range from $550,000 to over $1,200,000, depending on configuration, automation level, and cutting hours. Machines equipped with advanced features such as pallet systems, robotic loading, and in-process measurement systems typically command premium pricing, especially if they have low operating hours.

Cutting time remains one of the most important determinants of price. A low-hour machine with a strong maintenance history will command a premium, while a high-hour machine may require additional investment in repairs or recalibration. Buyers should also consider logistics, installation, and tooling costs, which can be significant for machines of this size. Overall, the NVGH-22T represents a major but valuable investment, offering unmatched capacity, precision, and long-term reliability for large-scale industrial grinding applications.