The DMG MORI NVGH-12T is a large-capacity CNC vertical multi-process grinding machine engineered for high-precision machining of heavy and oversized components. As one of the largest models in the NVGH series developed by Taiyo Koki under DMG MORI, it is designed to deliver exceptional rigidity, accuracy, and productivity. The machine is widely used in industries such as aerospace, energy, automotive, and heavy engineering, where large parts like turbine housings, bearing rings, and gear components require tight tolerances and superior surface finishes.
The NVGH-12T features a swing diameter of approximately 1,250 mm and a maximum grinding diameter of around 1,200 mm, with a maximum workpiece height of up to 700 mm and grinding length of about 600 mm. It is capable of handling heavy workpieces weighing up to 3,000 kg, making it suitable for demanding large-part applications. The work spindle operates at speeds up to 150 rpm, while the grinding spindle can reach speeds of approximately 6,000 rpm, ensuring stable and efficient machining performance even for large diameters.
A key advantage of the NVGH-12T is its multi-process capability, allowing internal (ID), external (OD), and face grinding to be completed in a single clamping. This reduces setup time and improves overall accuracy by eliminating repositioning errors. The machine is equipped with a turret-type wheelhead with continuous B-axis indexing, enabling flexible grinding operations and precise angular adjustments for complex geometries.
The NVGH-12T also offers an optional direct-drive C-axis with ultra-fine indexing resolution of 0.0001°, enabling advanced non-round grinding operations such as cams and polygonal shapes. Additional features include compatibility with automation systems such as pallet changers, robotic loading, and in-process measurement systems, which enhance productivity and support unattended operation. Overall, the NVGH-12T is a powerful and versatile grinding solution designed for high-precision, large-scale manufacturing environments.
DMG MORI NVGH-12TSPECIFICATIONS
DMG MORI NVGH-12T – AXIS
Number of Axes: 2 (X, Z) + B-axis (turret indexing) + optional C-axis
Purchasing a used DMG MORI NVGH-12T is a highly practical and cost-effective strategy for manufacturers requiring large-capacity precision grinding without the substantial investment of a new machine. One of the primary advantages is significant cost savings. New machines in this category are extremely expensive due to their size, advanced engineering, and automation capabilities, but used units can provide similar performance at a much lower price point.
Another important factor is durability. Machines built by DMG MORI are known for their robust construction and long service life, and the NVGH-12T is designed to maintain rigidity and accuracy even under heavy loads. Because grinding involves relatively low cutting forces compared to milling or turning, structural wear is minimized, allowing older machines to remain reliable if they have been properly maintained.
Cutting time, or machine hours, is one of the most critical considerations when evaluating a used NVGH-12T. Machines with lower grinding hours typically have better spindle condition, improved axis accuracy, and longer remaining service life. However, machines with higher usage can still be a worthwhile investment if they have undergone refurbishment, such as spindle rebuilding, replacement of feedback systems, or CNC control upgrades. In many cases, a well-maintained high-hour machine can outperform a poorly maintained low-hour one.
Another advantage is faster availability. Used machines can often be sourced and installed much more quickly than new equipment, which may have long lead times. Many used NVGH-12T units also come equipped with tooling, automation systems, or measurement solutions, reducing additional setup costs and improving operational readiness.
Depreciation also works in favor of the buyer. High-end grinding machines lose a significant portion of their value over time while retaining their functional capabilities. This makes a used NVGH-12T an excellent option for companies looking to expand capacity or handle large-part grinding without a major upfront investment.
HOW MUCH DOES A USED DMG MORINVGH-12TCOST?
The cost of a used DMG MORI NVGH-12T varies widely depending on factors such as manufacturing year, machine condition, cutting hours, automation features, and included tooling. As one of the largest and most advanced vertical grinding machines in its class, it typically falls into the premium segment of the used CNC grinding market.
For machines manufactured before 2000, prices generally range from $60,000 to $150,000. These machines often have high cutting hours and may require refurbishment, such as spindle rebuilding, replacement of feedback systems, or CNC control upgrades. However, they can still be suitable for less demanding applications or lower production volumes if properly maintained.
Machines from the 2000–2010 period typically range between $140,000 and $300,000. These units often include improved CNC controls and may feature early automation systems. Cutting time becomes a key pricing factor in this category—machines with lower hours or recent refurbishment tend to command higher prices due to better reliability and performance.
For newer machines manufactured between 2010 and 2025, prices can range from $320,000 to $650,000 or more, especially for units equipped with advanced features such as automatic pallet changers, robotic loading systems, and in-process measurement technology. Machines with low cutting hours and strong maintenance records command a premium in this segment due to their higher accuracy retention and longer service life.
Cutting time remains one of the most important determinants of price. A low-hour machine will typically be more expensive but offers better long-term value, while a high-hour machine may require additional investment in maintenance or retrofits. Buyers should also consider costs such as installation, tooling, and calibration. Overall, the NVGH-12T represents a high-value investment, offering large capacity, precision, and long-term reliability in demanding industrial environments.
