The 4-axis milling machine for blocks and abutments for laboratory and practice Download Vhf N4 Brochure The Vhf N4 is ideal for in-office laboratories that want to produce the work without delay and avoid the higher costs associated with external production. With the combination of the wet grinding machine Vhf N4 and a dry milling machine, users can work simultaneously and minimize the cleaning effort that most hybrid machines would require. The Vhf N4 is a wet processing machine for grinding glass ceramic, composite and zirconia blocks as well as titanium abutments. This machine combines the high precision and fast drives common to all vhf machines with a liquid cooling system in an extremely compact housing. Maximum freedom of indication: Crown | Bridge Inlay | Onlay Abutment Veneer Features and Benefits Vhf N4 Dental Milling Machines 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 Sophisticated design 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 Absolute independence Around 40 block materials from a great variety of manufacturers – with upward tendency > 1,300 implant platform for titanium and CoCr prefab abutments from different manufacturers Ideal for labs and in-office labs Outstanding reliability 100% developed and manufactured in Germany 24 months warranty Highly economical 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 Conveniently removable cooling liquid tank Automatic changer for 8 tools Webcam in working chamber for remote monitoring and service Ethernet interface for stable connection Very easy operation via DENTALCAM software with DIRECTMILLFunction – included in scope of delivery and without license fees Machinable materials: Composites Plastics | Wax Glass ceramics Zirconia Titanium CoCr 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. It impresses not only thanks to its high precision and fast drives, but also thanks to its ultra-compact housing with closed fluid circuit. Eight fine nozzles on the spindle direct the cooling liquid precisely onto the effective area between the tools and workpiece, delivering an optimal cooling effect. Tool changes in a flash The tool magazine can be inserted quickly and effortlessly in just one step. The automatic changer offers space for up to eight tools. The three compartment block holder is another highlight. That makes the N4 the ideal partner for research and practice laboratories. Outstanding precision Scientists at the University of Washington confirmed an outstanding precision of −10 μm to 26 μm during demanding applications like milling titanium abutments. Closed fluid circuit The large fluid tank can easily be removed from the drawer. For a variety of indications For crowns and bridges, inlays, onlays, abutments, veneers, table tops, etc. Technical Specifications Vhf N4 Dental Milling Machines Fields of applicationWet machiningMaterialsGlass ceramics, titanium, zirconia, composites, plastic materials – Blocks up to 45 × 20 × 20 mmIndicationsCrowns, bridges, fully anatomical crowns and bridges, inlays, onlays, abutments, veneers, table topsConstructionMachine bed made of solid cast aluminum bodyHousingSheet steel housing, white high-gloss lacquer finish, with working chamber flap and cooling liquid tank integrated in the drawerNumber of axes4Linear axes X-/Y-/Z-axisPrecision ball screws, rolled version · motors with resolution < 1 μm · ground precision guides made of steel · repetition accuracy ± 0.003 mmRotary axis A-axisRotary axis with high run-out accuracy · rotation angle: 200°Control unit4-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 interfaceLightingRGB LED lighting with status displayCamera systemIntegrated in the working chamber for easy remote support and possibility of internal recordingGeneralHigh-frequency spindle, synchronous, with pneumatic tool clamping · sealing air to prevent debris from entering · automatic cone cleaningSpeedUp to 80,000 rpmPowerPeak power (Pmax): 800 watts · nominal power (S6): 600 watts · continuous power (S1): 440 wattsBearing4-fold hybrid ceramic ball bearing · concentricity deviation at inner cone < 3 μmColletStainless steel collet with ceramic coating for tools with 3 mm shank diameter and max. 35 mm total lengthTool changeTool magazine for 8 tools, removable · length measurement and tool breakage monitoring via precision measuring key · access through working chamber door, safety lockWetMultiple fluid nozzles on the spindle · integrated cooling liquid tank (3.5 litres) with active carbon filter system · flow-sensor for monitoring the liquid supply · PURECompressed air4 bar: 25 l/min up to 8 bar: 45 l/min · air purity according to ISO 8573-1:2010Power100 · 240 volts · 50/60 Hz, 640 wattsData10/100/1000 Mbit/s BaseT port (auto-sensing) Ethernet via RJ-45 socketOperating temperatureBetween 10 °C and 35 °CAir moistureMax. 80 % (relative), non-condensingDimensions (W/D/H)364 × 460 × 473 mm · 364 × 667 × 473 mm with open flap and drawerFootprint (W/D)337 × 324 mmWeight52 kg
