Used Insert Milling Cutter for sale (12,640)

Condition: used, x-travel 300 mm y-travel 300 mm z-travel 400 mm Control Dialog 11 turning speed range - main spindle 40 - 4000 min/-1 tool taper SK 40 swivellable +/- 90 ° quill stroke 80 mm In our opinion, the machine is in very good used condition and can be inspected under power by appointment. Accessories: - Cabin Accessories, tools and clamping devices shown are only included in the scope of delivery if this is noted in the additional information. Changes and errors in the technical data and information as well as prior sale reserved! Rcjdpezq Hlfjfx Ab Eed

Condition: used, x-travel 560 mm y-travel 500 mm z-travel 410 mm Control Deckel Dialog 11 In our opinion, the machine is in good used condition and can be inspected under power by appointment. Accessories, tools and clamping devices shown are only included in the scope of delivery if this is noted in the additional information. Rcedszq Hk Uepfx Ab Eod Subject to changes and errors in the technical data and information as well as prior sale!

Condition: used, Year of construction: 2008, x-travel 700 mm y-travel 420 mm z-travel 610 mm Control Heidenhain output 22 kVA weight ca. 5.200 kg In our assessment, the machine is in good used condition and can be inspected under power by appointment. Technical features & accessories: Rjdpfjzq Hkhjx Ab Ejcd - Erowa automation Accessories, as well as the tools and clamping devices shown in the images, are included in the scope of delivery only if explicitly noted in the additional information. Subject to changes, errors in technical data and specifications, and prior sale!

Condition: ready for operation (used), CTX 320 2004 With many tools Rodpfezqakuex Ab Ejcd Hainbuch collet set, 6 Live tools 6000 RPM Bar 68,5mm center distance 600 turning over bed, slide: 400, 300 Travel Z,X 450,210 Turret 12 station 5000RPM Weight 4500kb 3905x1553x1830 Ask for film

Condition: ready for operation (used), Year of construction: 2012, operating hours: 7,474 h, travel distance X-axis: 508 mm, travel distance Y-axis: 406 mm, travel distance Z-axis: 356 mm, controller manufacturer: HAAS, table load: 227 kg, spindle speed (max.): 10,000 rpm, number of axes: 3, This 3-axis HAAS Mini Mill 2 was manufactured in 2012. It features an X-axis travel of 508 mm, Y-axis travel of 406 mm, and Z-axis travel of 356 mm. The machine includes a table size of 1,016 × 356 mm and a maximum table load of 227 kg. If you are looking to get high-quality machining capabilities, consider the HAAS Mini Mill 2 vertical machining centre we have for sale. Contact us for further details. • Table: • Size: 1,016 × 356 mm • T-slots: 3 × 16 mm • T-slot spacing: approx. 110 mm • Feed rates: • Max cutting feed: 12.7 m/min • Rapid traverse: 15.2 m/min • Electrical: • Power supply: 360–480 V / 3 Ph / 50–60 Hz Technical Specification Rcedpfszbh U Dex Ab Ejd Taper Size BT 40

Year of construction: 2003, condition: good (used), Cutting mill, side mill, granulator, shredder, plastic shredder, granulate mill, granulator, rotor mill, recycling technology -Manufacturer: Rapid, Granulator Hammer Mill Cutting Mill Mobile -Type: 1528 -Drive motor: 2.2 kW -Inlet cross-section: 280 x 180 mm -Outlet: 280 x 180 mm -Sieve: Hole size 6 mm -Quantity: 1 cutting mill available Redpezn Iqksfx Ab Eecd -Dimensions: 600/550/H1140 mm -Weight: 183 kg

Year of construction: 2007, condition: good (used), Cutting mill, side mill, granulator, shredder, plastic shredder, granulate mill, granulator, rotor mill, recycling technology -Manufacturer: Rapid, Granulator Hammer Mill Cutting Mill Mobile Rsdpfx Aozn H Syeb Ejcd -Type: G15035-SOLO -Drive motor: 2.2 kW -Inlet cross-section: 300 x 245 mm -Outlet: 360 x 200 mm -Sieve: Hole size 5 mm -Quantity: 1 cutting mill available -Dimensions: 630/590/H1095 mm -Weight: 158 kg

Condition: good (used), Year of construction: 2007, CNC turning machine DOOSAN Type: PUMA 480 LM Year of manufacture: 2007 Control: Fanuc 21i T Technical data Swinging diameter mm 900 Turning diameter standard mm 380 Max. turning diameter mm 650 Turning length mm 2001 Travel X-Z axis mm 362/155 Bar diameter mm 165.5 Spindle bore mm 181 Chuck diameter mm 530 Spindle speed rpm 1500 Drive power kW 45 Tool turret number 12 Powered tools number 12 Speed of powered tools rpm 3000 Drive power kW 11 Redpfezqzm Dox Ab Escd Accessories 3-jaw power chuck, tailstock programmable (following) with programmable center, chip conveyor with hinged belt, steady rest self-centering SLU 4 Ø 35-245 mm, tool load monitoring, coolant pump 14 bar, Automatic tool measuring arm.

Condition: used, Webster Bennett 48 Inch Elevating Rail CNC Vertical Borer. Serial Number 6644-1 Chuck manual 48 inch, supplied with jaws Hydraulic turret Fanuc 18i -T Control. Swarf conveyor Air conditioning Unit on Electrical Panel. 1250mm (approx. ) under tool to table. Rodsymc Ipopfx Ab Ejcd

Condition: good (used), Year of construction: 1990, For sale: Zayer KF 3000 CNC milling machine. This is a large-capacity, fixed-table machine designed for machining heavy parts. Technical specifications (typical Heidenheim model): Dimensions and mechanical capacities: - Table length: approx. 3000 mm - Table width: approx. 1000 mm - Maximum table load: approx. 10,000 kg - X-axis travel (longitudinal): approx. 2700 mm - Y-axis travel (transversal): approx. 1250 mm - Z-axis travel (vertical): approx. 1000 mm (up to 1500 mm depending on version) - Machine weight: approx. 22,000 – 30,000 kg Spindle and power: - Spindle speed: up to approx. 3000 rpm - Spindle motor power: approx. 30 – 37 kW Rodpfszlrltex Ab Escd - Spindle taper: ISO 50 Numerical control: - CNC: Typically Heidenheim TNC

Condition: used, Year of construction: 2015, control Haidenhein serial number 10981203183 Axis 5 ja x-travel 1.250 mm y-axis 1250 mm z-travel 1000 mm workpiece diameter: 1250 mm Ja not simultaneously Rodpezpbl Refx Ab Eecd

Condition: used, Year of construction: 2022, x-travel 2.600 mm y-travel 1.100 mm z-travel 900 mm control 840 D sl Celos Siemens turning speed range - main spindle 20 - 20.000 min/-1 power capacity - main spindel 35 kW max. Torque 120 Nm tool taper SK 40 DIN 69871 swivellable B: +/- 100 ° table surface area 3.200 x 1.100 mm max. table load 4.000 kg max. workpiece height 972 mm Rcjdpfozqvmxox Ab Eed rotary table dia. 1.050 mm C-Axis 360 ° max. workpiece weight 1.200 kg number of toolpositions 120 pos. tool taper SK 40 DIN 69871 max. tool diameter 80 mm max. tool-dia with free toolbox 130 mm max. tool length 300 mm max. tool weight 6,0 kg rapid traverse ( X / Y / Z ) 40 m/min feed speeds max. 40.000 mm/min feed power XYZ: 12 / 10 / 12 kN total power requirement 68 kVA weight of the machine ca. 28 t dimensions of the machine ca. 9,0 x 6,0 x 3,3 m 5 Axis CNC - Travel Column Milling Machine DMG-MORI - DMF 260 11 - Swivel-Millinghead (B-Axis) - NC rotary table (C-axis) - only approx. 4,930 spindle hours - only approx. 15,000 power-on hours - WITHOUT clamping devices, WITHOUT tools

Condition: new, travel distance X-axis: 3,000 mm, travel distance Y-axis: 1,300 mm, travel distance Z-axis: 1,500 mm, rapid traverse X-axis: 30,000 m/min, rapid traverse Y-axis: 30,000 m/min, rapid traverse Z-axis: 30,000 m/min, position of the milling head: Universal-Diagonal-Fräskopf, spindle speed (max.): 6,000 rpm, table width: 1,100 mm, table load: 10,000 kg, table length: 3,100 mm, torque: 1,178 Nm, power: 31 kW (42.15 HP), Equipment: rotational speed infinitely variable, LAGUN BM 3 Bed Milling Machine – available for short-term delivery The LAGUN BM 3 is a highly stable bed milling machine for heavy-duty and precision machining. Ideal for single-piece production as well as series production with the highest requirements for stiffness, accuracy and reliability – all without complex foundation work. Your advantages at a glance: ✔ Installation & commissioning in Germany included ✔ Service & spare parts directly via JMT ✔ Lease purchase / financing possible ✔ No special foundation required (standard industrial floor is sufficient) ✔ 24 months warranty Why LAGUN: LAGUN is one of the leading machine tool manufacturers in Spain (MAHER HOLDING) and stands for robust construction, high dynamics and decades of experience in the construction of bed milling machines. Rsdpfeh Ekrtsx Ab Escd The machines impress with high reliability, ease of maintenance and economical operation. Technical equipment: Control: HEIDENHAIN TNC 640 CNC path control HEIDENHAIN TFT screen 19" HEIDENHAIN motors, measuring systems and electronic handwheel HR-510 Cooling: Internal coolant supply (ICS) 36 bar Tool changer: 24-position drum magazine with dual gripper Chip disposal: Double-hinge belt conveyor (front and rear) Preparation: Preparation for 4th axis (rotary table optional) Enclosure: Full enclosure (perimeter) Accuracy: Positioning accuracy: ± 0.015 mm Repeatability: ± 0.008 mm Your advantages with JMT: ✔ Official LAGUN sales partner in Germany ✔ Technical support and on-site service ✔ Fast spare parts supply ✔ Training and instruction included ✔ Reference machines available in Germany Contact us – we will be happy to advise you and create an individual offer.

Condition: new, travel distance X-axis: 4,000 mm, travel distance Y-axis: 1,300 mm, travel distance Z-axis: 1,500 mm, rapid traverse X-axis: 30,000 m/min, rapid traverse Y-axis: 30,000 m/min, rapid traverse Z-axis: 30,000 m/min, position of the milling head: Universal-Diagonal-Fräskopf, spindle speed (max.): 6,000 rpm, table width: 1,100 mm, table load: 12,000 kg, table length: 4,100 mm, workpiece weight (max.): 12,000 kg, overall weight: 26,500 kg, torque: 1,178 Nm, power: 31 kW (42.15 HP), Equipment: rotational speed infinitely variable, LAGUN BM 4 Bed Milling Machine – available for short-term delivery The LAGUN BM 4 is a highly stable bed milling machine for heavy-duty and precision machining. Ideal for single-part production as well as series production with the highest demands on rigidity, accuracy, and reliability – and all without complex foundation work. Rcedpfxjh Ekrzo Ab Ejd Your advantages at a glance: ✔ Installation & commissioning in Germany included ✔ Service & spare parts directly from JMT ✔ Lease purchase / financing possible ✔ No special foundation required (standard industrial floor is sufficient) ✔ 24-month warranty Why LAGUN: LAGUN is one of the leading machine tool manufacturers in Spain (MAHER HOLDING) and stands for robust construction, high dynamics, and decades of experience in the construction of bed milling machines. The machines impress with their high reliability, ease of maintenance, and economical operation. Technical equipment: Control system: HEIDENHAIN TNC 640 control system HEIDENHAIN TFT screen 19" HEIDENHAIN motors, measuring systems, and electronic handwheel HR-510 Cooling: Internal coolant supply (ICS) 36 bar Tool changer: 24-position drum magazine with double gripper Chip disposal: Double-hinge belt conveyor (front and rear) Preparation: Preparation for 4th axis (rotary table optional) Enclosure: Full enclosure (perimeter) Accuracy: Positioning accuracy: ± 0.020 mm Repeatability: ± 0.008 mm Your advantages with JMT: ✔ Official LAGUN distribution partner in Germany ✔ Technical support and on-site service ✔ Fast spare parts supply ✔ Training and instruction included ✔ Reference machines available in Germany Contact us – we will be happy to advise you and prepare an individual offer.

Condition: new, travel distance X-axis: 8,000 mm, travel distance Y-axis: 1,300 mm, travel distance Z-axis: 2,000 mm, position of the milling head: Universal-Diagonal-Fräskopf, rapid traverse X-axis: 30,000 m/min, rapid traverse Y-axis: 30,000 m/min, rapid traverse Z-axis: 30,000 m/min, spindle speed (max.): 6,000 rpm, pivoting range: 1 °, table length: 9,500 mm, table width: 1,100 mm, torque: 1,178 Nm, table load: 62,000 kg, coolant supply: 36 bar, workpiece weight (max.): 62,000 kg, Equipment: documentation/manual, rotational speed infinitely variable, LAGUN CM 8 Traveling Column Milling Machine The LAGUN CM 8 is a highly dynamic traveling column milling machine for the precise machining of large and complex workpieces. Ideal for single-part production as well as series production with the highest requirements for accuracy, stability, and flexibility. Your benefits at a glance: ✔ Installation & commissioning in Germany included ✔ Service & spare parts directly from JMT ✔ Lease purchase / financing possible ✔ High flexibility thanks to the traveling column concept ✔ 24 months warranty Why LAGUN: LAGUN is one of the leading machine tool manufacturers in Spain (MAHER HOLDING) and stands for robust design, high dynamics, and decades of experience in the construction of milling machines. The machines impress with their reliability, ease of maintenance, and economical operation. Technical equipment: Control system: Two HEIDENHAIN TNC 7 controls – one at the front of the machine and one at the rear in the cabinet 2 x HEIDENHAIN TFT screens 19" HEIDENHAIN motors, measuring systems, and electronic handwheels HR-510 Rcjdpfom Tv D Ajx Ab Eod Cooling: Internal coolant supply (ICS) 36 bar Tool changer: 60-position chain magazine with double gripper Chip disposal: 2 x hinge belt conveyors Preparation: Preparation for rotary table / 4th axis Enclosure: Three-sided perimeter enclosure Accuracy: Positional accuracy: ±0.040 mm Repeatability: ±0.008 mm Your advantages as a JMT customer: ✔ Official LAGUN sales partner in Germany ✔ Technical support and on-site service ✔ Fast spare parts supply ✔ Training and instruction included ✔ Reference machines available in Germany Contact us – we will be happy to advise you and create an individual offer.

Condition: new, travel distance X-axis: 3,200 mm, travel distance Y-axis: 2,000 mm, travel distance Z-axis: 1,000 mm, table length: 3,000 mm, table width: 1,700 mm, spindle speed (max.): 6,000 rpm, rapid traverse X-axis: 24,000 m/min, rapid traverse Y-axis: 24,000 m/min, rapid traverse Z-axis: 24,000 m/min, table load: 10,000 kg, position of the milling head: Vertikal, workpiece weight (max.): 10,000 kg, torque: 1,392 Nm, overall weight: 30,000 kg, spindle nose: SK 50 - DIN 69871/A, spindle motor power: 53 W, Equipment: rotational speed infinitely variable, STARVISION DX 3220 Portal Milling Machine – available for short-term delivery Technical features: Control system: HEIDENHAIN TNC 7 CNC path control HEIDENHAIN TFT screen, 19" HEIDENHAIN motors, measuring systems, and electronic handwheel Cooling: Internal coolant supply (IKZ), 70 bar Rodpfx Abshy Avpe Eecd Tool changer (ATC): 60-position chain magazine with dual gripper Chip removal: Hinged belt chip conveyor (transverse) Dual screw conveyor (longitudinal) Preparation: Preparation for 4th axis (rotary table) Enclosure: Full enclosure, closed at the top Accuracy: Positioning accuracy: ± 0.035 mm Repeatability: ± 0.028 mm Contact us – we will be happy to advise you and provide you with an individual offer.

Condition: excellent (used), max. workpiece diameter 300 mm hobbing length 1000 mm clamping length 2400 mm spindle head ISO 40 distance work spindle /surface of the table 180 - 330 mm surface area 2410 x 375 mm longitudinal feed 1000 mm vertical movement of the milling spindle 150 mm Rcjdpfszq Hl Sox Ab Esd turning speeds 45 - 500 U/min weight of the machine ca. 5,6 t dimensions of the machine ca. 3,0 x 1,6 x 1,9 m

Condition: excellent (used), Year of construction: 1997, functionality: fully functional, Universal milling machine EMCO FB-4 with 3-axis digital display Heidenhain, in very good condition. Technical data: Rodpszq Efqofx Ab Eocd >> Year of manufacture: 1997 >> Fixed angular table (clamping area 800 x 400 mm) >> Speed: 18 speed stages from 63 - 3150 rpm >> Mechanical feed: 18 stages Feed rate X and Y: 16-800 mm/min Feed rate Z: 8-400 mm/min Rapid traverse X and Y: 2400 mm/min Rapid traverse Z: 1200 mm/min >> Travels X/Y/Z: 450/300/350 mm >> Equipment: Vertical & horizontal spindle >> Vertical quill, extendable 100 mm >> Tool holder: SK40 >> Weight approx. 1500 kg >> Machine dimensions L x W x H: 1485 x 1475 x 1680 mm >> Motor brake >> Connection value: 4 kVA Accessories and equipment: >> 3-axis digital display Heidenhain >> Coolant system >> Chip tray, machine feet >> Operating manual, spare parts list About the machine: Offered is a universal milling machine EMCO FB-4 in very good condition. The EMCO runs very smoothly, even at high speeds. The vertical milling head is fastened with four screws and can be easily swung to the side using the articulated arm visible on the left side of the machine. Feed and rapid traverse in each axis. The Emco comes from a training workshop and has been used very little. Take advantage of the opportunity to inspect and test the machine on-site while it is powered up.

Condition: excellent (used), Year of construction: 2007, functionality: fully functional, Kunzmann WF7/3 tool milling machine with Heidenhain TNC 124 control – in SUPER condition, CE compliant!! Technical data: >> Year of manufacture 2007, machine no. 370648 >> Swiveling and tilting table 6 mounting slots Slot width 14 H7 Slot spacing 63 mm Maximum load 300 kg >> Spindle speeds S I 1 – 1125 min-1 Rsdpfx Abezq Edmo Eocd Spindle speeds S II 1126 – 4500 min-1 >> Feed rate (potentiometer 100%) longitudinal and transverse 0 – 2000 mm/min Rapid traverse longitudinal and transverse 5000 mm/min Feed rate vertical 0 – 2000 mm/min Rapid traverse vertical 4000 mm/min >> Travel distances X/Y/Z: 600/400/400 mm >> Vertical and horizontal quill – SK40 >> Hydraulic clamping system >> Weight approx. 2000 kg >> Dimensions approx.: 2 x 2 x 2 m >> Main drive motor: 7.5 kW Accessories and equipment: >> Heidenhain TNC 124 control >> Hydraulic clamping, vertical and horizontal >> Automatic central lubrication >> Spindle brake >> Technical documentation, spare parts diagrams, operating manual >> Coolant system About the machine: We offer a Kunzmann WF7/3 tool milling machine with a Heidenhain TNC 124 control. This universal milling machine is in very good condition. A special feature of this machine is the 4th axis and a digital display for the quill. It comes from a company belonging to an automotive manufacturer, where it was used primarily for training purposes. It has a very user-friendly control system. Furthermore, the machine has hydraulic clamping in both vertical and horizontal positions. Switching from vertical to horizontal is very easy by folding down the vertical head. The guides are lubricated regularly by the central lubrication system. The Kunzmann has been mechanically and electrically inspected by us. Take the opportunity to inspect and test the Kunzmann on site while it is powered up.

Condition: like new (used), Kronen PGW grid cutter Stainless grid cutter, pneumatic cutting of fruits and vegetables into various cutting forms, mobile Rodpoit I A Nefx Ab Ejcd

Condition: excellent (used), Year of construction: 2007, operating hours: 13,500 h, functionality: fully functional, travel distance X-axis: 1,000 mm, travel distance Y-axis: 1,000 mm, travel distance Z-axis: 1,000 mm, overall weight: 15,800 kg, operating hours of spindle: 13,500 h, coolant supply: 40 bar, We offer in good condition Deckel Maho DMU100P Duoblock from 2007 with only 13.500 spindle hours. Rcjdpfx Ajzlyd Dob Eed Heidenhain iTNC530 control X-Axis travel: 1000 mm Y-Axis travel: 1000 mm Z-Axis travel: 1000 mm Internal coolant 40 bar SK40 12.000 RPM Spindle Table Ø1100 x 900 Machine will be in stock in the next 2 weeks.

Condition: used, Year of construction: 2010, x-travel 500 mm y-travel 450 mm z-travel 400 mm control iTNC 530 Heidenhain turning speed range - main spindle 20 - 10.000 min/-1 power capacity - main spindel 13 / 9 kW max. Torque 83 / 57 Nm tool taper SK 40 DIN 69871 table surface area 700 x 500 mm max. table load 500 kg T-slots 7x 14 x 63 mm number of toolpositions 60 pos. max. tool weight 6 kg max. tool diameter 80 mm max. tool-dia with free toolbox 130 mm max. tool length 300 mm Rcsdpsy E Tv Aefx Ab Eod change-time tool to tool 1,6 sec change-time chip to chip 8,0 sec rapid traverse 24 m/min Feed force ( X / Y / Z ) 4,5 kN feed speeds 1 - 24.000 mm/min total power requirement 26 kVA weight of the machine ca. 4,5 t dimensions of the machine ca. 4,5 x 3,5 x 2,3 m CNC - Milling Machine Vertical DECKEL MAHO - DMU 50 - 3 Axis - only ca. 8.097h Spindle-Hrs. - Backup package for power outages - DXF import

Condition: used, Year of construction: 2009, x-travel 2.360/2x 930 mm y-travel 600 mm z-travel 600 mm table surface area 2.750 x 600 mm Control Siemens 840 D spindle tunring speed 30 - 6.000 U/min Redpfx Abezqgh Ho Eecd tool taper SK 50 number of tool places 26 Pos. Number of working hours ca. 50.884 h connected load 69 KVA weight of the machine ca. 20 t In our assessment, the machine is in good used condition and can be inspected under power by appointment. Technical features & accessories: - Handwheel, Heidenhain HR 410 - Chip conveyor - External belt filtration system Accessories, tools, and workholding devices shown are included in the scope of delivery only if specified in the additional information. Subject to change, errors in technical data and specifications, and prior sale.

Condition: used, Year of construction: 2013, operating hours: 13,672 h, total height: 2,450 mm, total length: 5,000 mm, total width: 2,200 mm, Empty weight: 9.000 kg Price: On request - Year: 2013 - Documentation available: Yes - CE marking present: Yes - CE certificate present: No - Serial number: 1237361A51A - Operating hours: 13672 - Drive system: CNC - Horizontal/vertical: vertical - Control system brand: Fanuc Rsdpfx Ajyzzrkeb Eocd - Control system type: 0-MD - Power [kW]: 11.0 - Number of axes [pcs]: 3 - X-axis travel [mm]: 610 - Y-axis travel [mm]: 430 - Z-axis travel [mm]: 570 - Table length [mm]: 650 - Table width [mm]: 450 - Tool holder: BT40 - Main spindle power [kW]: 15 - Max. spindle speed [rpm]: 10000 - Options: External cooling, Pallet milling machine, Chip conveyor, Spindle cooling, Exchange table, Tool magazine - └ Tool magazine [pcs.]: 24 - Transport dimensions: 5000mm x 2200mm x 2450mm (l x w x h) - Transport weight [kg]: 9000kg - Transport packages [pcs.]: 2 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, Year of construction: 1996, total height: 2,570 mm, total length: 3,520 mm, total width: 2,350 mm, Empty weight: 6.000 kg Price: On request - Year: 1996 - Documentation available: Yes - CE marking present: Yes - CE certificate present: No - Serial number: M2058 - Drive system: CNC - Horizontal/vertical: Horizontal - Control system brand: Fanuc - Control system type: 18-M - Number of axes [pcs]: 3 - X-axis travel [mm]: 750 - Y-axis travel [mm]: 420 - Z-axis travel [mm]: 450 - Table length [mm]: 900 - Table width [mm]: 420 - Min. spindle speed [rpm]: 40 - Max. spindle speed [rpm]: 8000 Rjdpfxsw Slaxs Ab Eecd - Transport dimensions: 3520mm x 2350mm x 2575mm (l x w x h) - Transport weight [kg]: 6000kg Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum