Used Mazak Vqc 20 40 for sale (370)

Condition: good (used), Year of construction: 2023, functionality: fully functional, Mazak CV5 - 500 Smooth, Year of manufacture 2023, Mazak Mazatrol SmoothX control. Travel X Y/Z 730/450/470 mm, 5-axis simultaneous machining, B-axis swivel range: 220° (±110°), indexing 0.0001°, C-axis swivel range: 360°, table load: 200 kg, max. workpiece diameter: 500 mm, spindle speed up to 18,000 rpm, power: 11 kW, torque: 57.3 Nm, taper: SK-40, 48-position tool magazine, factory automation with Profibus, coolant package with through-spindle coolant 70 bar, overload monitoring system, tool ID system, oil mist extraction, linear measuring system. Godpjyizmpofx Aadjtu

Condition: ready for operation (used), Year of construction: 2006, travel distance X-axis: 800 mm, travel distance Y-axis: 800 mm, travel distance Z-axis: 800 mm, controller manufacturer: MAZATROL, controller model: 640M Nexus, number of axes: 4, This 4-axis Mazak NEXUS HCN 6000 was manufactured in 2006. It features a Mazatrol 640M Nexus control, 800 mm travel in X, Y, and Z axes, and a B-axis rotation of 360°. The spindle speed reaches up to 10,000 rpm, and it includes a 120-position tool magazine. The table can handle loads up to 1,000 Kg. Consider the opportunity to buy this Mazak NEXUS HCN 6000 turn-mill centre. Contact us for more information. • B-axis rotation: 360° • Table size: 500 x 500 mm • Permissible load: 1,000 kg • Tool magazine: 120 positions • High pressure coolant: 70 bar Additional equipment • Chip evacuator (chip conveyor) Technical Specification Gtsdeygl Ncepfx Aadsu Taper Size ISO 50

Condition: used, Year of construction: 2013, travel distance X-axis: 3,000 mm, travel distance Y-axis: 800 mm, travel distance Z-axis: 720 mm, total height: 3,355 mm, total length: 5,250 mm, total width: 3,573 mm, table length: 3,500 mm, table width: 820 mm, spindle speed (max.): 18,000 rpm, spindle speed (min.): 35 rpm, table load: 2,500 kg, Equipment: documentation/manual, CNC Control Mazatrol Matrix 2 Table size 3500 x 820 mm Table load 2500 kg Number of pallets 1 Movement X-Y-Z-axis 3000 - 800 -720 mm C-axis (table rotation) 0,0001° Gtjdoxftkqjpfx Aadou B-axis travel ± 110° Spindle speed 35 - 18.000 R/min Spindle taper HSK-A63 Spindle motor 35-26 kW Magazin capacity 30 If you have any questions concerning the machine, please do not hesitate to contact us by phone or e-mail. Feel free to view our other advertisements for a complete overview of our stock.

Condition: ready for operation (used), Year of construction: 2002, travel distance X-axis: 560 mm, travel distance Y-axis: 610 mm, travel distance Z-axis: 560 mm, controller manufacturer: MAZATROL, controller model: PC-FUSION-CNC, total height: 2,650 mm, overall weight: 11,500 kg, This 4-axis Mazak FH-4800 horizontal machining center was manufactured in 2002. It offers robust and precise machining capabilities, ideal for a variety of applications. Consider the opportunity to buy this Mazak FH-4800 horizontal machining center. Contact us for more information about this machine. Additional equipment • Tool Capacity: 64 positions • Maximum Tool Diameter: 150 mm /Maximum Tool Length: 375 mm/ Maximum Tool Weight: 12 kg Machine Benefits Technical Machine Benefits • Rapid traverse rate (x/y/z): 50 m/min • Pallet size: 400 mm x 400 mm • Number of pallets: 2 / pallet indexing: 1° increments / maximum load capacity per pallet: 400 kg • Spindle taper: iso 40/ spindle speed range: 0 – 12000 rpm • Spindle motor power: 22 kw (30 min)/ 15 kw (20 min) /11 kw (continuous) • Distance from spindle center to pallet top: 50 – 660 mm Extra Information Gedpfx Aaex D Ihuodotu In the last 3 years, they changed the spindle, servo, encoder, motor, cover.. More than 40k to keep the machine in good condition. Dimensions Machine Depth 4200 mm

Condition: used, Year of construction: 1996, x-travel 1500 mm y-travel 650 mm Gjdpfx Aoyg N Sheadetu z-travel 650 mm size of pallet 1740 x 650 mm spindle taper SK 50 spindle turning speed range 25 - 6000 U/min feeds longditudinal/cross/vertical max. 8 mm/min rapid traverse longitudinal and cross 26 m/min rapid traverse vertical 20 m/min spindle throat 665 mm distance spindle nose and table 200 / 850 mm drilling in full material 50 mmø threading M 45 ATC 60 Pos tool diameter 125 mm wotkpiece diameter with 2 vacant positions 260 mm workpiece length 400 mm weight of tools max. 20 kg spindle drive 18,5 kW control MAZATROL M PLUS Accessories: chip conveyor, coolant

Condition: used, Year of construction: 2005, operating hours: 60,683 h, functionality: fully functional, turning length: 1,524 mm, turning diameter: 820 mm, spindle speed (min.): 3,300 rpm, spindle bore: 104 mm, travel distance X-axis: 870 mm, travel distance Y-axis: 500 mm, travel distance Z-axis: 1,598 mm, rapid traverse X-axis: 40 m/min, rapid traverse Y-axis: 40 m/min, rapid traverse Z-axis: 40 m/min, Equipment: rotational speed infinitely variable, MAZAK CNC Turning Machine MODEL: INTEGREX e-500 HS /U1500 with Mazatrol 640M PRO Control for sale. The machine is in good condition and can be inspected under power on site. The machine maintenance can be documented. In 2025, the X and Y axes were replaced. The milling spindle and gearbox were replaced in 2024. Technical Data - Max. swing diameter: 820 mm Godpfxex Syldo Aadotu - Max. turning diameter: 820 mm - Max. turning length: 1524 mm Main spindle: - Speed range: 0-3300 rpm - Drive power: 30 kW / 22 kW - Max. torque: 588 Nm - Spindle nose: A2-11" - Spindle bore: 104 mm - Indexing: 0.0001 Sub spindle: - Speed: 0-3300 rpm - Drive power: 30 kW / 22 kW - Max. torque: 588 Nm - Spindle nose: A2-11" - Indexing: 0.0001 Milling spindle: - Drive power: 37 kW - Max. torque: 260 Nm - Speed range: 0-10,000 rpm - Tool holder: SK50 Tool magazine: - Number of tool pockets: 120 Travel: - X: 870 mm - Z: 1598 mm - Z2: 2458 mm - Y: 500 mm - B axis: -30 to 210°, 0.0001° Feed rate: - X/Y/Z: 40 mm/min Machine data: - Connected load: 104 kVA - Operating voltage: 400V / 50 Hz - Required footprint (L x W): 7 x 3.5 m Special accessories: - 120-position tool magazine - High-pressure coolant 70 bar - Renishaw - Laser measurement system for rotating tools - Interface set - Air/water through-spindle cooling - Overload monitoring system - Mayfran Consep 2000 chip conveyor - SMW quick-change chuck

Condition: refurbished (used), Overhauled Mazak main spindle for VTC 200 or VTC 300 for sale. The spindle has been fully overhauled, spindle bearings and intermediate sleeves have been replaced. The taper has been reground. Subsequently, it has been balanced. The maximum speed is 12,000 rpm. We have additional overhauled Mazak spindles in stock; feel free to send us your inquiry. This is an exchange spindle, meaning a core return is required. If you have any further questions, we are at your disposal. Gedpfx Aevdkdijadetu

Condition: used, Year of construction: 1991, Mazak SQT 10MS lathe for sale. The machine is fully functional and in good condition. Technical specifications: Max. turning diameter 230 mm Main spindle Speed range 35-6,000 rpm Main drive power 11 kW Secondary spindle Drive power 5.5 kW Speed range 180 - 6,000 rpm Indexing 72 positions/5 ° Tool turret Number of tool positions 12 Driven tools Speed range 120-3,000 rpm Drive power 2.2 kW Travel paths X-axis 160 mm Z-axis 455 mm B-axis 460 mm Travel speed Feed range X/Z-axis 0 - 5,000 mm/min C-axis 1 - 2,000 °/min Machine data (with standard equipment) Total connected load 43 kVA Machine weight, . 3,500 kg Machine dimensions (L x W x H), approx. 2.70 x 1.70 x 1.85 m Accessories Tool presetter (MAZAK Tool Eye System) C-axis Dual foot switch for opening/closing the chuck Chuck status feedback (open/closed) Front door lock Complete coolant system Work area lighting Documentation Gsdpfx Aev Tbu Doadstu

Condition: ready for operation (used), Year of construction: 2023, travel distance X-axis: 730 mm, travel distance Y-axis: 450 mm, travel distance Z-axis: 470 mm, total height: 2,933 mm, overall weight: 6,500 kg, spindle speed (max.): 12,000 rpm, spindle motor power: 18,500 W, tool weight: 8,000 g, product length (max.): 2,570 mm, number of axes: 5, This 5-axis Mazak CV5-500 vertical machining center was manufactured in 2023. It features a maximum spindle speed of 12,000 rpm, a dual-stage electric gear, and a rapid traverse rate of 36 m/min in X, Y, and Z axes. The machine supports a table load of 200 kg and includes a 30-position automatic tool changer. Ideal for complex, multi-axis precision machining. Contact us for more information about this machine. • Electrical load • Apparent power (40% duty): 45.5 kVA • Permanent apparent power: 43.4 kVA • Electrical connection: 3-phase AC 380/400/415/440/460/480 V ±10%; 50/60 Hz ±1 Hz • Pneumatics • Pressure: 5–9 bar • Flow rate: 26 l/min • Air blow-off through spindle: 345 l/min • Spindle • Spindle nose: Steep taper 40° • Gear stages: 2-stage (electric) • Rated power (AC inverter motor): 18.5 kW (10% duty), 15.0 kW (25%), 11.0 kW (40% and continuous) • Max torque: 119.4 Nm (10%), 95.5 Nm (25%), 70.0 Nm (40%); continuous 57.3 Nm • Axes, feeds, rapids • Number of simultaneously operating axes: 5 • Rapid traverse X/Y/Z: 36 m/min • Rapid traverse B/C: 30 min⁻¹ • Feed rates X/Y/Z: 36,000 mm/min • Table • Diameter: 500 mm • Tapped holes: M16 × 2 • Reference bore: Ø50 mm H6 (+0.016 / −0.000 mm) • Workpiece capacity • Max diameter: 500 mm • Max height: 320 mm • Travels / Working area • B-axis swivel/indexing: 220° (±110°), 0.0001° • C-axis swivel: 360° Gtodpfsyf H Tyex Aadju • Distance spindle nose – table top (horizontal): 50–520 mm • Distance spindle nose – table center (vertical): 95–565 mm • Automatic tool changer • Tool positions: 30 (optional magazine: 48) • Selection: Random, shortest path • Tool holder: MAS BT 40 or SK 40 • Pull bolt: Yamagaxi ANSI type • Max tool diameter: 80 mm (adjacent occupied) / 125 mm (adjacent free) • Max tool length: 300 mm • Tool change time (chip-to-chip): 4.60 s • Tank capacities • Guideway/ballscrew lube: 1.80 l • Hydraulic oil: 5.0 l • Spindle coolant: 26.0 l • Option: 18,000 min⁻¹ spindle coolant (oil tank): 60 l • Total tank capacity: 320.0 l Additional equipment • Monitoring/sensing package • Analog inputs: 4 × 0–10 V • Digital inputs: 8 • ACC-SENSOR.1AXIS.10M: 1‑axis accelerometer with 10 m cable • Active power sensor (Dimensions: 8105 × H85 mm) • Toolscope IP for DIN rail Rev.4 • Industrial PC functionality in the control cabinet • Communication and control via HMI • PM: Tool and process monitoring • Tool breakage detection • Self-learning wear limit • Fixed and dynamic tolerance bands • Process performance monitoring strategy • Collision monitoring with all Goliog • DIN rail mounting in the control cabinet • Dimensions: 812 × H90 × D62 mm • Documentation including Toolscope • Chip conveyor (dimension reference provided: machine width 3,365 mm including chip conveyor)

Condition: reconditioned (used), Year of construction: 2004, Used 3-axis machining center Mazak Nexus 410A Year of manufacture: 2004 Control: Mazatrol 640M Worktable: Table size: 900 x 410 mm Max. table load: 500 kg T-slots: 3 Distance between T-slots: 125 mm Gtsdpfeyg Hx Sjx Aadsu Slot width: 18 mm Travel paths: X-axis: 560 mm Y-axis: 410 mm Z-axis: 510 mm Rapid traverse: X/Y/Z axis: 36 m/min Feed rate: 1 – 8,000 mm/min Working spindle: Speed range: 35 - 12,000 rpm Main drive power: 18.5 kW Tool magazine: Number of tool stations: 30 Max. tool diameter: 80 mm - with adjacent positions free: 125 mm Max. tool length: 350 mm Max. tool weight: 8 kg Machine data: Total connected load: 33.1 kVA Machine weight: approx. 5,100 kg Machine dimensions (L x W x H): approx. 2.10 x 2.60 x 2.80 m STANDARD ACCESSORIES: Complete coolant system - Flood coolant - Through-spindle coolant Coolant and chip guard Chip and coolant protection by fully enclosed working area Work area lighting Chip conveyor, ejection to the side The machine can be inspected by appointment in Willingshausen. We can load it. Technical data, accessories and description of the machine are non-binding.

Condition: ready for operation (used), Year of construction: 2006, operating hours: 32,790 h, functionality: fully functional, travel distance X-axis: 2,032 mm, travel distance Y-axis: 750 mm, travel distance Z-axis: 750 mm, table load: 3,000 kg, spindle speed (max.): 6,000 rpm, TECHNICAL DETAILS Travel X-axis: 2,032 mm Travel Y-axis: 750 mm Travel Z-axis: 750 mm Max. workpiece height: 870 mm Max. table/workpiece load: 3,000 kg Table width: 800 mm Table length: 2,240 mm Spindle speed: 40 – 6,000 rpm Spindle taper: SK 50 Standard spindle power: 18.5 kW Standard torque: 759 Nm Spindle power (optional): 26 kW Torque (optional): 1,067 Nm MACHINE DETAILS Control unit: MAZATROL Gjdpfxjyfhdye Aadstu Dimensions & Weight Dimensions (L x W x H): 5,685 mm x 4,096 mm Weight: 14,000 kg Operating hours: 32,790 h

Condition: good (used), Year of construction: 2003, functionality: fully functional, machine/vehicle number: 310163917, travel distance X-axis: 150 mm, travel distance Z-axis: 250 mm, total height: 2,200 mm, total length: 3,000 mm, total width: 2,000 mm, overall weight: 4,000 kg, controller manufacturer: MAZAK, controller model: MAZATROL 640 T, MAZAK SUPERQUICKTURN 100 M CNC Lathe Gtodpsx Hwguofx Aadju - Operating voltage: 200 V - Frequency: 50/60 Hz - Rated current: 89 A - Connection: 17.8 kVA The machine is equipped with a tailstock and a 12-position tool turret, including driven tool stations. Note: The item must be collected definitively between 04 and 12 March 2026 on a date yet to be agreed. FCA D-75181 Pforzheim – loaded onto truck

Condition: excellent (used), Year of construction: 1996, operating hours: 8,978 h, functionality: fully functional, machine/vehicle number: 121591, overall weight: 2,750 kg, Equipment: documentation/manual, Mazak Quick Turn 10 CNC Lathe • Exceptionally well-kept machine from laboratory/training enviroment with very limited operating hours ( cutting time 604 hours). Lightly used, nevver run inheavy production. Clean, accurate and in excellent mechanical condition. Includes tooling and documation as shown. Collet chuck and jaw chuck. Language Swedish on operatingsystem Gtjdpfxeyigi Tj Aadeu

Condition: good (used), Year of construction: 1998, Mazatrol T-Plus control Max. turning diameter: 470 mm Max. swing diameter: 575 mm Turning length: 1,500 mm Spindle speed: 3,000 rpm Magazine for 40 tools (KM 63/SK 40) B-axis Y-axis Steady rest Tailstock Gtedpfx Aeyg Ru Doadju Chip conveyor

Condition: excellent (used), Year of construction: 2018, MAZAK QUICK TURN 100MSY Godpfx Aaeygi A Hsdotu Max. turning diameter: 280 mm Max. milling speed: 5,000 rpm Max. spindle speed: 5,000 rpm Max. bar diameter: 42 mm The machine is equipped with: - Mazatrol SmoothG CNC control - KITAGAWA 3-jaw chuck for main spindle, diameter 169 mm - KITAGAWA 3-jaw chuck for secondary spindle, diameter 135 mm - Tool Eye - C-axis - C-axis on sub-spindle with 0.0001° resolution - Y-axis - Automatic parts catcher - Signal light (3-color LED) - Reinforced coolant pump - Chip conveyor - Standard MAZAK tool package

Year of construction: 2011, condition: ready for operation (used), Laser power: 4kW, Laser type: CO2, Laser model: YB-L400A 8M, Wavelength: 10.6µm, Pulse type: N/P, max. Beam diameter: 22.5mm, Power stability 8h: +/-2%, Gas consumption: approx. 30l/h, Travel path X/Y/Z: 3260mm/1545mm/430mm, max. Workpiece dimensions X/Y/Z: 3050mm/1545mm/25mm, max. Table load: 915kg, Machine dimensions X/Y/Z: approx. 8000mm/2900mm/2600mm, Weight: approx. 14200kg, Control: Mazatrol Preview M, Operating hours: approx. 31105h. The integrated thread cutting unit is defective. Including linear guide for the tube cutting device and various wear parts. Documentation available. An on-site inspection is possible. Gtsdpoyifl Hofx Aadju

Condition: not inspected (used), Year of construction: 1998, functionality: limited functionality, MAZAK V 414-22 B Vertical machining center with tool changer Gtsdpsyf H S Aofx Aadsu Tools: SK40 Control: Mazatrol dialog control M-Plus Operating hours: approx. 54,000 h Condition: well-maintained, good condition Documentation and service records available Please read our documents. Technical Data: Table size: 900 x 410 mm Maximum table load: 500 kg X-axis travel: 500 mm Y-axis travel: 400 mm Z-axis travel: 400 mm Rapid traverse speed X / Y / Z axes: 26 / 26 / 20 m/min Spindle: DIN 69871 / SK40 Spindle speed: 50 - 7,000 rpm Number of tools in magazine: 22 Workpiece mass (horizontal): 100 kg Accessories on request: Various SK40 toolholders Various Sandvik milling cutters Mechanical or hydraulic vise Renishaw workpiece measurement system

Condition: used, Year of construction: 2007, swing dia. 430 mm Distance between the spindles 1450 mm control MAZATROL 640T x-axis 310 mm z-axis 605 mm spindle tunring speed 4.000 U/min In our opinion, the machine is in good used condition and can be inspected under power by appointment. Technical Features & Accessories: - Gantry Loader Accessories, tools, and clamping devices shown are only included in the scope of delivery Gjdoyb S Nropfx Aadstu if noted in the additional information. Subject to changes and errors in the technical data and information, as well as subject to prior sale!

Condition: used, Year of construction: 1987, Technical details: x-travel: 760 mm y-travel: 450 mm z-travel: 500 mm control: Mazatrol CAM M-2 tool changer with: 30 tools (Kettenmagazin) Plätze spindle taper MT: ISO 40 Revolution per minute: 28 - 4500 U/min. feed speeds infinitely variable: X/Y/Z: max. 2.000 mm/min max. torque on the spindle: ca. 23 Nm rapid traverse:: X / Y: 24 m/min rapid traverse:: Z: 15 m/min. bore capacity in steel (diameter): Ø 40 mm table-size: 500 x 1150 mm table load capacity - central/maximum: 700 kp total power requirement: 11 kW (24,4 kVA) kW Weight approx.: 6,8 t dimension machine xH: 3,7 x 2,5 x 2,6 m chip conveyor: L: 3,7 x B: 0,75 x H: 1,35 m Gtodpfx Aaevc Avbjdou ATC tool magazine for 30 tools up to Ø 100mm x 330mm, SK40 Hinged belt chip conveyor Knoll-120S-1 with ejection height of 1130mm Coolant tank with pump, 200liter capacity, 30 l/min. Operation via control panel with boom 2000mm. accessories: cooling lubricant pump Base plates *

Condition: ready for operation (used), Year of construction: 2021, operating hours: 3,415 h, travel distance X-axis: 425 mm, travel distance Z-axis: 600 mm, overall weight: 4,500 kg, controller manufacturer: MAZATROL, number of axes: 2, This Mazak QTC 100 MSL horizontal turning machine was manufactured in 2021. Ideal for versatile machining operations. Consider the opportunity to buy this Mazak QTC 100 MSL horizontal turning machine. Contact us for more information. Additional equipment • Collet chuck; 2x 3-jaw chuck • Includes bar loader Machine Benefits Technical Machine Benefits Gtjdpfx Aasx Nr T Isdeu • Known defects: none known • Mounting diameter : 68mm Extra Information Machine still under powerThrough hole diameter: 52mm

Condition: ready for operation (used), Year of construction: 2012, controller manufacturer: SIEMENS, controller model: 840 D, number of axes: 4, This 4-axis Mazak VTC 800/30SR was manufactured in 2012. It features a high-pressure coolant system at 15 bar, a 48-tool magazine, and dual auto tool length measurement units. Equipped with Siemens software, a Visiport, and an RMP60 probe, it's ideal for precise vertical machining tasks. If you are looking to get high-quality milling capabilities, consider the Mazak VTC 800/30SR machine we have for sale. Contact us for more information. • High-pressure coolant (15 bar) • Auto tool length measurement x 2 units • Visiport • 19" screen • Siemens software P • Signal tower • Additional work light • RMP60 probe • Bracket for NCRT for vertical use • Table centre partition • 48-tool magazine Additional equipment Gtedsx D I A Sjpfx Aadsu • Consep 2000 (chip conveyor/coolant system) for 15 bar, left-hand discharge

Condition: ready for operation (used), Year of construction: 2015, A CNC vertical long-bed machining center Mazak is available. Travel X/Y/Z: 3000mm/800mm/720mm, B-axis: 110°, C-axis: 360°, table diameter: 600mm, long-bed table dimensions X/Y: 3500mm/820mm, max. table load: 2500kg, spindle interface: BT40, speed: 18000rpm, rapid traverse: 50m/min, tool stations: 48, coolant pressure: 70bar. Machine dimensions X/Y/Z: approx. 5250mm/3650mm/3200mm, weight: approx. 16100kg, control: Mazatrol Matrix 2, spindle hours: 18502h. Including rotary table Nikken CNC 601MA, high-pressure coolant, center partition wall, Renishaw probe, touch probe RMP 60Q, CAD/CAM software Topsolid 7.18 and postprocessor. Documentation available. An on-site inspection is possible. Gtsdpfx Ajx Ih Dmjadeu

Year of construction: 1999, condition: ready for operation (used), Travel X/Y/Z: 1050mm/800mm/880mm, B-axis: 360°, table dimensions X/Y: 630mm/630mm, number of pallets: 2, max. workpiece weight: 1500kg, speed: 7000rpm, tool holder: SK50, power: 30kW, tool positions: 80, max. tool diameter: 135mm/260mm, max. tool weight: 30kg, rapid traverse: 40m/min. Machine dimensions X/Y/Z: approx. 6400mm/2600mm/3200mm, weight: approx. 19700kg, control: Mazatrol 640M PC-Fusion-CNC. Including 2-fold pallet changer for 630mm/630mm pallets. Documentation available. On-site inspection is possible. Gtodevnd Sujpfx Aadou

Year of construction: 1997, condition: ready for operation (used), Travel X/Y/Z: 1300mm/1100mm/1000mm, table dimensions X/Y: 800mm/800mm, number of pallets: 14, max. table load: 2200kg, table indexing: 0.001°. Speed: 7000rpm, spindle power: 50hp, tool magazine: 80, dimensions X/Y/Z: approx. 7000mm/3400mm/3800mm, weight: approx. 24000kg. On-site inspection is possible. Gedpfxstx Dn Uj Aadstu

Condition: ready for operation (used), Year of construction: 1998, A Mazak CNC vertical machining center is available. Travel X/Y/Z: 1660mm/760mm/660mm, spindle power: 11kW, spindle speed: 7000rpm, table dimensions X/Y: 2000mm/760mm, max. workpiece weight: 800kg, rapid traverse X/Y/Z: 24m/min/24m/min/20m/min, feed: 5m/min, tool positions: 24. Machine dimensions X/Y/Z: approx. 4350mm/3400mm/2850mm, weight: approx. 8700kg. Documentation available. An on-site inspection is possible. Gsdpfjxfvicox Aadetu