Explore the DNM Series Lineup

Large-Format Power Meets 50-Taper Strength

The DNM 750/50L II is a high-performance vertical machining center built for heavy-duty applications that require both long X-axis travel and the power of a 50-taper spindle. With its robust structure, oversized linear guideways, and CAT 50 Big Plus spindle, this machine is purpose-built for manufacturers working on large plates, structural aerospace parts, mold bases, and high-strength materials that demand rigidity, torque, and stability.

Exceptional Rigidity Across Extended Travels

The DNM 750/50L II provides 2,160 mm (85") of X-axis travel supported by wide roller guides and reinforced Meehanite castings. The oversized servo-driven ball screws on all axes—each with ball nut cooling—maintain high positioning accuracy and repeatability even under thermal and mechanical stress. With a 3,968-lb table load capacity and dual-supported saddle design, this machine delivers stable performance across the entire table.

  • Travels: X: 85", Y: 30", Z: 25.6"

  • Rapid Traverse (XYZ): 945 ipm

  • Repeatability: ±0.0002"

  • Table Load Capacity: 3,968 lbs

  • Footprint: 193" x 137"

High-Torque Spindles for Demanding Cuts

The 50-taper Big Plus spindle system offers two configurations:

  • 8,000 rpm, 29.5 hp, 260.6 ft-lbs torque – best for heavy cuts and hard metals

  • 10,000 rpm, 35 hp, 122 ft-lbs torque – ideal for high-speed machining of large aluminum or mild steel parts

Both spindles use direct-drive cartridge construction to minimize vibration and thermal growth, enabling reliable performance in long-cycle operations. Acceleration times are fast (under 4.5 seconds to full speed), reducing cycle times and increasing overall throughput.

Built-In Intelligence and Automation Ready

The DNM 750/50L II includes essential automation capabilities such as:

  • Adaptive Feedrate Control (AFC): Dynamically adjusts feeds based on spindle load

  • Tool Load Monitoring (TLM): Detects worn, missing, or overloaded tools

  • Renishaw Probe Ready: Includes OMI-2T optical receiver and GUI software

  • 30-Tool Double Arm ATC: Accepts up to 33 lb tools with a 2.5-second change time

  • Manual Pulse Generator (MPG): Precision axis control for setup and alignment

Coolant and chip evacuation systems, including through-spindle coolant, air blast, and shower coolant, ensure long-term reliability in high-chip, high-volume environments.

What industries benefit most from the DNM 750/50L II?

This machine is ideal for aerospace, mold & die, energy sector, and heavy equipment manufacturers. It’s designed for applications requiring long workpieces and rigid tooling. The 50-taper spindle combined with extended X-axis travel provides the torque and reach necessary to cut deep cavities, machine oversized components, and maintain precision throughout.

How does the DNM 750/50L II compare to the standard DNM 750/50 II?

While both machines offer the strength of a 50-taper spindle and rigid frame, the DNM 750/50L II adds significantly more X-axis travel—85" compared to 64"—and increases the machining envelope for longer parts. The L model is especially useful when multiple fixtures or large molds are required without sacrificing positioning accuracy or speed.

What’s the benefit of using a 50-taper spindle over 40-taper?

The CAT 50 taper allows for much higher torque transfer, enabling heavier cuts with larger tools. This is especially important when machining hard materials, deep cavities, or large features. In high-duty-cycle environments, the added rigidity reduces vibration and improves both tool life and surface finish.

How does Adaptive Feedrate Control work?

AFC monitors spindle load in real-time and adjusts feedrates dynamically to optimize cutting. This prevents overloads, improves surface finish, and increases tool life. It can pause the machine if excessive force is detected, reducing the risk of part damage or tool failure. AFC is especially useful during roughing or when cutting variable-density materials.

Can the DNM 750/50L II be used for unattended machining?

Yes. With its probe readiness, tool load monitoring, automatic lubrication, and robust enclosure, the machine is well-suited for lights-out production. Probing ensures accurate part setups, AFC manages feed optimization, and the large tool changer supports longer runtimes. Coolant and chip evacuation systems also reduce operator intervention.

ACCESSORIES

Whether it’s a replacement part or an accessory to boost your productivity, we offer a wide selection of products from a large variety of vendors to bring you the best accessories at the best price.

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TURNKEY ENGINEERING SOLUTIONS

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  • Make a part faster 
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Our team of machining experts offer a wide range of Turnkey Solutions to help you make more out of your parts and your machine.