VHF N4+

vhf®

N4+ Dental Mill

The plus in wet grinding and milling

Enhance your dental clinic or laboratory's production value with the N4+ by vhf. It is an eye-catching dental mill in four axes with an integrated water-cooled spindle. This way, you get improved process stability, and even in continuous operation, you can always count on first-class results.

The Essence of Wet Grinding.

The N4+ is an efficient wet processing machine for grinding and milling glass ceramic, composite, and zircon blocks, as well as CoCr and titanium abutments. Thanks to its high precision, fast drives, and ultra-compact housing with a closed fluid circuit, it impresses. Eight fine nozzles on the spindle direct the cooling liquid precisely onto the effective area between the tools and the workpiece, delivering an optimal cooling effect.

Image shows a close-up of vhf N4 Plus dental mill

Features

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Money-Saver

  • PUREWATER: no grinding additives necessary, except for titanium processing
  • Work on up to 3 blocks with 45 mm length at the same time
  • Milling of screw channels – saves costs for “meso” blocks
  • Removable cooling liquid tank
  • Automatic changer for 8 tools
  • Webcam in working chamber for remote monitoring and service
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Engineered for Sophisticated Results

  • Spindle with water cooling for perfect results, even in continuous operation
  • Eight liquid nozzles for steady tool cooling
  • Highest rotational speeds of up to 80,000 rpm with 800 watts of power
  • Heavy industrial quality
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Exceptional Precision

  • Restorations in Ultra HD
  • Premium spindle with four-fold ball bearing made of hybrid ceramic for the highest concentricity
  • 3 μm repetition accuracy
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Material Versatility

  • Around 40 block materials from different manufacturers
  • Implant platform for Titanium and CoCr prefab abutments from several manufacturers
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Ideal for Labs & In-Office Labs

It is easy to operate via DENTALCAM software with DIRECTMILL Technology – included in scope of delivery and without license fees

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Reliability

  • 100% engineered and manufactured in Germany
  • Two years warranty

The tools that create perfect restorations.

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Proven Advantages of N4+ 

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Equipped with a Water-cooled Spindle 

vhf®’s N4+ is fitted with a water-cooled spindle, which is highly beneficial for improved process stability and first-class results in dental wet milling. 

 

Close up of dental mill N4+ by vhf milling a block

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Swap the Tool Magazine in Seconds 

Insert the tool magazine quickly and effortlessly in just one step. The automatic tool changer holds up to eight tools, providing maximum efficiency. Another standout feature is the innovative three-compartment block holder.

 

Image shows a close-up of a technician changing the dental milling tools in a vhf N4+ milling machine

Image shows a close-up of a technician changing the dental milling tools in a vhf N4+ milling machine

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A Precision that Experts Confirm

Scientists at the University of Washington* confirmed exceptional precision, ranging from −10 μm to +26 μm, in demanding applications such as milling titanium abutments.

*vhf Statement

Image shows a technician removing the water tanks from the N4+ dental mill's drawer

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Closed Fluid Circuit

The N4+ features an ultra-compact design with a closed fluid circuit, and its large fluid tank is easily removable from the drawer for added convenience.

Materials* & Indications

*Up to 45 x 20 x 20 mm Blocks

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  • Composites/Plastics
  • Glass Ceramics
  • Zirconia
  • Titanium
  • CoCr

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  • Crown/Bridge
  • Inlays
  • Onlays
  • Veneers
  • Abutments

N4+ Technical Specifications

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Field of Application
Field of Application
Wet Machining
Base System Construction
Base System Construction
Machine bed made of solid cast aluminum body
Housing
Housing
Sheet steel housing, white high-gloss lacquer finish, with working chamber flap and cooling liquid tank integrated in the drawer
Axes
Axes
  • Number of axes: 4
  • Linear Axes X/Y/Z | Precision ball screws, rolled version · motors with resolution < 1 μm · ground precision guides made of steel · repetition accuracy ± 0.003 mm
  • Rotary A-axis | Rotary axis with high run-out accuracy · Rotation angle: 200°
Control Unit
Control Unit
4-axis simultaneous control electronics with continuous path progression and dynamic pre-calculation · hardware-based real-time operating system with standardized command set · FPGA-integrated processor · updateable hardware · real-time path calculation via dedicated hardware engines in the FPGA · four-quadrant control of the motors for particularly smooth running · multiple analogue and digital I/Os for controlling the peripherals · integrated inverter for synchronous and asynchronous motors, electronic gate detection · Ethernet and USB interface
Lighting & Camera
Lighting & Camera
RGB LED Lighting with status display | The camera system is integrated in the working chamber of the N4+ milling machine for easy remote support and the possibility of internal recording.
Spindle
Spindle
  • High-frequency spindle, synchronous, with pneumatic tool clamping · Sealing air to prevent debris from entering · automatic cone cleaning
  • Speed: Up to 80 000 rpm
  • Power: Peak power (Pmax): 800 watts · nominal power (S6): 600 watts · continuous power (S1): 440 watts
  • Bearing: 4-fold hybrid ceramic ball bearing · concentricity deviation at inner cone < 3 μm
  • Collet: Stainless steel collet with ceramic coating for tools with 3 mm shank diameter and max. 35 mm total length
Tool Change
Tool Change
Tool magazine for 8 tools, removable · length measurement and tool breakage monitoring via precision measuring key · access through working chamber door, safety lock

Sintering & Firing | Essential post-processing steps in dentistry.
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