USED DMG MORI NVGH-3T

The DMG MORI NVGH-3T is a high-spec CNC vertical multi-process grinding machine designed for small to medium-sized components requiring exceptional accuracy and productivity. As part of the NVGH series developed by Taiyo Koki under DMG MORI, it represents a premium solution that integrates multiple grinding operations—internal (ID), external (OD), and face grinding—into a single setup. This makes it highly suitable for industries such as automotive, aerospace, and bearing manufacturing, where precision and efficiency are critical.

The machine features a swing diameter of 350 mm and a maximum grinding diameter of 350 mm, with a maximum workpiece height of 450 mm and grinding length of up to 320 mm. It is capable of handling workpieces up to approximately 200 kg, positioning it as a compact yet powerful solution for precision components. The work spindle operates at speeds up to 800 rpm, while the grinding spindle can reach up to 20,000 rpm, enabling high-speed and high-accuracy grinding operations.

One of the defining features of the NVGH-3T is its high-rigidity design, which minimizes vibration and ensures stable machining even at high speeds. The machine is equipped with a turret-type wheelhead featuring two grinding spindles with continuous indexing (B-axis), allowing flexible multi-process operations. The internal grinding spindle includes an automatic tool changer (ATC), while the external grinding spindle supports large grinding wheels, enhancing versatility.

An optional C-axis with direct drive enables continuous indexing with extremely fine resolution (0.0001°), allowing non-round grinding such as cam profiles and polygon shapes. The machine also supports automation through systems like SCARA robots, pallet systems, and automatic measurement solutions, improving productivity and reducing operator intervention.

Overall, the NVGH-3T is a compact yet high-performance grinding center that combines precision, flexibility, and automation capability, making it ideal for manufacturers requiring high-accuracy machining of small to medium-sized components.

DMG MORI NVGH-3T SPECIFICATIONS

WHY BUY USED DMG MORI NVGH-3T

Buying a used DMG MORI NVGH-3T is a strategic choice for manufacturers looking to access high-end vertical grinding technology without the high cost associated with new machines. One of the primary advantages is cost efficiency. As a premium multi-process grinding machine, the NVGH-3T can be expensive when purchased new, but used models retain most of their core capabilities while being significantly more affordable.

Another major advantage is durability. The NVGH-3T is designed with a high-rigidity structure and precision components, ensuring long-term stability and accuracy. Because grinding processes involve lower cutting forces compared to milling or turning, structural wear is generally reduced. This means that even older machines can maintain good performance levels if they have been properly maintained.

Cutting time, or machine hours, is one of the most important factors when evaluating a used NVGH-3T. Machines with lower grinding hours typically offer better spindle condition, improved axis accuracy, and longer remaining service life. However, higher-hour machines can still be a viable investment if they have undergone refurbishment, such as spindle rebuilding, replacement of encoders, or CNC control upgrades. In many cases, maintenance history is more important than the manufacturing year.

Another key benefit is immediate availability. Used machines can often be sourced and installed much faster than new equipment, which may have long lead times. Many used NVGH-3T machines also come with tooling, automation options, or measurement systems already installed, which adds value and reduces additional setup costs.

Depreciation also works in favor of the buyer. High-end CNC grinding machines lose a significant portion of their value over time while retaining their functionality. This makes a used NVGH-3T an excellent option for companies looking to expand production capacity, improve precision, or enter multi-process grinding without a large capital investment.

HOW MUCH DOES A USED DMG MORI NVGH-3T COST?

The cost of a used DMG MORI NVGH-3T varies depending on factors such as manufacturing year, machine condition, cutting hours, included tooling, and automation features. As a high-spec vertical multi-process grinding machine, it generally falls into the mid-to-high price range in the used CNC grinding market.

For machines manufactured before 2000, prices typically range from $25,000 to $70,000. These machines often have high cutting hours and may require 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 maintained.

Machines from the 2000–2010 period generally range between $60,000 and $130,000. These units often include improved CNC controls and better automation compatibility. Cutting time becomes a key pricing factor in this category—machines with lower hours or recent refurbishments tend to command higher prices due to better reliability and accuracy.

For newer machines manufactured between 2010 and 2025, prices can range from $140,000 to $300,000 or more, especially for machines with low cutting hours, advanced automation features, and in-process measurement systems. These machines are ideal for high-precision and high-volume production environments where uptime and consistency are critical.

Cutting time remains one of the most important determinants of price. A low-hour machine with a strong maintenance record will command a premium, while a high-hour machine may require additional investment in repairs or calibration. Buyers should also consider additional costs such as installation, tooling, and potential retrofits. Overall, the NVGH-3T represents a strong value proposition in the used market, offering advanced grinding capability, automation potential, and long-term reliability.