USED DMG MORI TGN 30/30

The DMG MORI TGN 30/30 is a high-precision CNC thread grinding machine designed for producing complex threads with extremely tight tolerances. It belongs to the category of grinding centres and is widely used in industries such as aerospace, automotive, tooling, and precision engineering where accuracy at micron levels is essential. The machine is specifically engineered for grinding components like thread gauges, worm shafts, and precision lead screws, making it a niche but highly valuable asset in advanced manufacturing environments.

With a distance between centers of 300 mm and a maximum grinding length of approximately 250 mm, the TGN 30/30 is optimized for small to medium-sized workpieces. It supports a maximum grinding diameter of around 90 mm and a workpiece weight of up to 20 kg, indicating its specialization in precision rather than heavy-duty bulk machining. The machine is equipped with a FANUC CNC control system, allowing for advanced programmability and repeatability in thread profiles and helix angles.

One of its key strengths lies in its closed-loop feedback system, which uses optical scales and rotary encoders to achieve extremely fine positional accuracy. This ensures consistent pitch diameter and thread geometry across long production runs. The built-in grinding spindle reduces vibration, which is critical in maintaining surface finish and dimensional stability.

The TGN 30/30 also emphasizes ease of operation and maintenance. Features such as accessible wheel replacement and ergonomic design reduce downtime and improve productivity. Although compact in size, it delivers high-end grinding capabilities comparable to larger machines. Overall, this model is best suited for manufacturers who require high-precision thread grinding rather than general-purpose machining, making it a specialized but valuable investment in the CNC grinding segment.

DMG MORI TGN 30/30 SPECIFICATIONS

WHY BUY USED DMG MORI TGN 30/30

Buying a used DMG MORI TGN 30/30 can be a highly strategic decision, especially for manufacturers focused on precision grinding without the capital expense of a new machine. One of the biggest advantages is cost efficiency. New high-precision grinding machines from premium brands like DMG MORI can be extremely expensive, often reaching into six-figure ranges depending on configuration, whereas used machines provide similar core capabilities at a significantly reduced price.

Another important factor is build quality and longevity. Machines from DMG MORI are known for robust engineering and long service life. Even older models from before 2000 can still perform effectively if properly maintained, particularly because thread grinding is a low-impact process compared to heavy milling. This means less structural wear over time, making older units viable for continued use.

Cutting time (or machine hours) plays a crucial role when evaluating a used TGN 30/30. A machine with lower operational hours will typically retain better accuracy, spindle condition, and axis performance. However, even higher-hour machines can be a good investment if they have undergone regular maintenance, retrofits, or component replacements such as encoders or grinding spindles.

Used machines also offer faster availability. Unlike new machines that may have long lead times, a used TGN 30/30 can often be installed and operational quickly, helping businesses scale production without delay. Additionally, many used units already come with tooling, fixtures, or software upgrades, further increasing their value proposition.

Finally, depreciation works in the buyer’s favor. CNC machines lose a significant portion of their value in the first decade, but their functional capability remains largely intact. This makes used purchases ideal for small to mid-sized workshops or companies entering precision thread grinding, allowing them to access high-end technology at a fraction of the original investment.

HOW MUCH DOES A USED DMG MORI TGN 30/30 COST?

The cost of a used DMG MORI TGN 30/30 varies significantly depending on factors such as manufacturing year, machine condition, cutting hours, retrofits, and included tooling. While specific listings for this exact model are limited, broader market data for used DMG MORI machines shows an average price around $80,000, with a wide range from under $1,000 to nearly $250,000 depending on configuration and condition. This provides a useful benchmark for estimating TGN 30/30 pricing.

For machines manufactured before 2000, prices typically fall in the range of $20,000 to $50,000. These machines often have higher cutting hours and may require refurbishment, such as spindle rebuilding or control upgrades. However, if well-maintained, they can still deliver reliable precision for non-critical applications or lower production volumes.

Machines from the 2000–2010 period generally command prices between $40,000 and $90,000. These units often feature improved CNC controls and better feedback systems, offering a balance between cost and performance. Cutting time becomes a major differentiator in this category—machines with lower hours or recent overhauls can reach the upper end of the price range.

For newer machines from 2010–2025, prices can range from $80,000 to $150,000 or more, especially if they include advanced control systems, automation features, or minimal usage. These machines typically have lower cutting hours, better accuracy retention, and require less immediate maintenance, making them ideal for high-precision, high-volume production environments.

Ultimately, the final cost depends heavily on inspection results, service history, and included accessories. Buyers should always consider not just the purchase price but also the cost of installation, tooling, and potential refurbishment when evaluating a used TGN 30/30.