Used Agie Charmilles Roboform 54 for sale (3,727)

Condition: ready for operation (used), Agie process regulator device PRD-10 B 614.130.3, used, minimal signs of wear, 100% functional. Isdpfx Aji D Tykschjba

Year of construction: 2005, condition: refurbished (used), AGIECUT Progress 3 Year of manufacture: 2005 Travel ranges: X = 500 mm, Y = 350 mm, Z = 426 mm Travel ranges U/V axis: +/- 70 mm Maximum taper: 30° at 100 mm height Maximum workpiece dimensions: 1050 x 650 x 420 mm Maximum workpiece weight: 400 (in the bath) / 800 (without the bath) kg Achievable surface quality: Ra: 0.30 µm Maximum cutting speed: 500 mm²/min Glass scales on the X and Y axes for increased precision Available wire diameters: 0.20 – 0.33 mm Wire EDM machine with automatic wire threading and re-threading after wire breakage Maximum threadable height: 420 mm With manual front door (accessible from one side) Includes AGIEJOGGER handheld control box for convenient setup AGIE IPG high-performance generator Ibodpfxsgzv Sco Achoa AGIEVISION control system Dimensions (length x width x height): 1940 x 2300 x 2600 mm Net weight: 3460 kg The machine will be completely overhauled and thoroughly tested by us. You will receive a 6-month warranty on the machine. We would also be happy to offer you commissioning and training.

Year of construction: 2008, condition: refurbished (used), AGIECUT Challenge V3, Year of manufacture 2008 travels: X= 500 mm, Y= 350 mm, Z= 256 mm travels U/V-axis: +/- 70 mm Maximum taper: 30° at 100 mm height Maximum workpiece dimensions: 1050 x 650 x 250 mm Maximum workpiece weight: 400/800 kg Achievable surface quality: Ra: 0.2 µm Available wire diameters: 0.10 - 0.33 mm Water bath machine with automatic wire threading With automatically lowerable tank (accessible from 2 sides) Incl. AGIEJOGGER- hand box for comfortable set-up Incl. AGIESETUP 3D AGIEVISION 5 control system AGIE IPG-V generator Dimensions (length x width x height): 2800 x 2400 x 2220 mm Net weight: 4500 kg The machine is cleaned, overhauled and extensively tested by us after receipt of order. Incl. user training at Techma on your overhauled machine Ibjdom Amf Dspfx Achea Optional: transport, commissioning, training, cooler

Condition: refurbished (used), Year of construction: 2011, functionality: fully functional, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 256 mm, AGIECUT Progress VP2 Year of manufacture: 2011 Travel ranges: X = 350 mm, Y = 250 mm, Z = 256 mm U/V axis travel ranges: +/- 70 mm Maximum taper: 30° at 100 mm height Maximum workpiece dimensions: 750 x 550 x 250 mm Maximum workpiece weight: 200 kg (submerged), 450 kg (non-submerged) Achievable surface finish: Ra: 0.20 µm Maximum cutting speed: 500 mm²/min Glass scales on X and Y axes for increased precision Available wire diameters: 0.15 – 0.33 mm Submerged wire EDM with automatic wire threading and re-threading after wire breakage Manual front door (accessible from one side) Including AGIEJOGGER handbox for easy setup AGIE IPG-V Generator with Power Module AGIEVISION CNC control Ibsdjywkuyjpfx Achja Dimensions (L x W x H): 1640 x 2040 x 2220 mm Net weight: 2580 kg Our machines are cleaned and thoroughly overhauled after receipt of order. A test cut with optimal surface finish is then carried out for acceptance. You will receive a 6-month warranty for the machine. We are happy to offer on-site commissioning and training.

Condition: refurbished (used), Year of construction: 2002, functionality: fully functional, AGIECUT Excellence 2F Ibjdpszbbndefx Achoa Year of manufacture: 2002 Travel ranges (X/Y/Z): 350 x 250 x 256 mm Travel ranges (U/V): +/- 70 mm Maximum taper: 30° at 100 mm Maximum workpiece dimensions (length/width/height): 750 x 550 x 250 mm Maximum workpiece weight (with/without bath): 200/450 kg Best achievable surface roughness: 0.1 µm Ra Max. cutting rate in cylindrical cutting: 300 mm²/min Available wire diameters: 0.07 - 0.33 mm Includes AGIE universal clamping frame Includes AGIE JOGGER hand box Includes AGIE-Setup 3D After receiving your order, the machine will be cleaned, inspected, and thoroughly tested by our technicians. We would also be happy to offer commissioning and training services.

Condition: refurbished (used), Year of construction: 2001, functionality: fully functional, AGIECUT Excellence 3 Year of manufacture: 2001 Travel paths: X= 500 mm, Y= 350 mm, Z= 256 mm U/V-axis travel: +/- 70 mm Maximum taper: 30° at 100 mm height Maximum workpiece dimensions: 1050 x 650 x 250 mm Maximum workpiece weight: 400/800 kg Achievable surface finish: Ra: 0.10 µm Available wire diameters: 0.10 – 0.33 mm Ibodpfxeyx D I Ae Achsa Submerged machine with automatic wire threading With automatically lowering tank (accessible from 2 sides) Including AGIEJOGGER handbox for convenient setup Including AGIESETUP 3D AGIEVISION control unit AGIE IPG generator Dimensions (L x W x H): 2800 x 2400 x 2220 mm Net weight: 4500 kg The machine will be cleaned, overhauled, and thoroughly tested by us upon receipt of order. Includes user training at Techma on your overhauled machine Optional: Transport, commissioning, chiller

Condition: refurbished (used), Year of construction: 2008, functionality: fully functional, GF AgieCharmilles Classic V3 Year of manufacture 2008 Travel paths: X= 500 mm, Y= 350 mm, Z= 426 mm Travel paths U/V axis: +/- 70 mm Maximum conicity: 30° at 100 mm height Maximum workpiece dimensions: 1050 x 650 x 420 mm Maximum workpiece weight: 400 (in bath) / 800 (without bath) kg Achieveable surface quality: Ra: 0.20 µm Maximum cutting rate: 300 mm²/min Available wire diameters: 0.15 – 0.33 mm Water bath machine with automatic wire threading and re-threading after wire breakage With manual front door (accessible from 1 side) Incl. AGIEJOGGER handbox for comfortable Setting up AGIE IPG-V generator AGIEVISION 5 control Dimensions (length x width x height): 1940 x 2300 x 2600 mm Net weight: 3460 kg The machine has already been cleaned, overhauled and tested by us. We would be happy to carry out an individual test cut for you. Iodjv Hbygspfx Achoba You receive a 6-month warranty on all machine parts. We would also be happy to offer you commissioning and training

Condition: refurbished (used), Year of construction: 2005, functionality: fully functional, workpiece weight (max.): 450 kg, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 256 mm, AGIECUT Challenge 2 eCut Year of manufacture: 2005 Travel ranges (X/Y/Z): 350 x 250 x 256 mm Ibjdpjxyxfpofx Achja Travel ranges (U/V): +/- 70 mm Maximum taper: 30° at 100 mm Maximum workpiece dimensions (length/width/height): 750 x 550 x 250 mm Maximum workpiece weight (with/without bath): 200/450 kg Best achievable surface finish: 0.2 µm Ra Available wire diameters: 0.10 - 0.33 mm Includes AGIE universal clamping frame Includes AGIE JOGGER handbox Includes console with USB port The machine will be cleaned, overhauled, and tested by us after receipt of the order. Commissioning and training can also be provided upon request.

Condition: refurbished (used), Year of construction: 2005, functionality: fully functional, workpiece weight (max.): 800 kg, travel distance X-axis: 500 mm, travel distance Y-axis: 350 mm, travel distance Z-axis: 256 mm, total length: 1,050 mm, total width: 650 mm, workpiece height (max.): 250 mm, AGIECUT Excellence 3 eCut Year of manufacture: 2005 Travel paths: X = 500 mm, Y = 350 mm, Z = 256 mm U/V-axis travel: +/- 70 mm Maximum taper: 30° at 100 mm height Maximum workpiece dimensions: 1050 x 650 x 250 mm Maximum workpiece weight: 400/800 kg Achievable surface quality: Ra: 0.10 µm Available wire diameters: 0.10 – 0.33 mm Iedpoyu Iq Eofx Acheba Submerged tank machine with automatic wire threading With automatically lowering tank (accessible from 2 sides) Including AGIEJOGGER hand box for convenient machine setup Including AGIESETUP 3D AGIEVISION control system AGIE IPG generator with eCut technologies Dimensions (L x W x H): 2800 x 2400 x 2220 mm Net weight: 4500 kg The machine will be cleaned, overhauled, and thoroughly tested by us upon receipt of order. Includes user training at Techma on your overhauled machine Optional services available on request: - Transport - Commissioning - Chiller unit - Clamping devices

Condition: refurbished (used), Year of construction: 2007, functionality: fully functional, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 256 mm, AGIECUT Progress V2 Year of manufacture: 2007 Travel distances: X = 350 mm, Y = 250 mm, Z = 256 mm U/V-axis travel range: +/- 70 mm Maximum taper: 30° at 100 mm height Maximum workpiece dimensions: 750 x 550 x 250 mm Maximum workpiece weight: 200 kg (submerged) / 450 kg (non-submerged) Achievable surface finish: Ra 0.20 µm Maximum cutting rate: 500 mm²/min Glass scales on X and Y axes for enhanced precision Available wire diameters: 0.20 – 0.33 mm Submerged-type machine with automatic wire threading and automatic re-threading after wire break Manual front door (accessible from one side) Includes AGIEJOGGER hand-held pendant for convenient setup Ibjdpfx Acex Uxglohoa AGIE IPG generator with Power Module AGIEVISION control system Dimensions (L x W x H): 1640 x 2040 x 2220 mm Net weight: 2580 kg Our machines are cleaned and completely overhauled after receipt of order. Afterward, a test cut is performed with the finest surface finish for approval. You will receive a 6-month warranty on the machine. We are happy to offer on-site commissioning and training.

Condition: refurbished (used), Year of construction: 2001, functionality: fully functional, AGIECUT Classic 2S Year of manufacture 2001 Travel paths: X= 350 mm, Y= 250 mm, Z= 256 mm Travel paths U/V axis: +/- 70 mm Maximum conicity: 30° at 100 mm height Iodpfev Dkvrox Achsba Maximum workpiece dimensions: 750 x 550 x 250 mm Maximum workpiece weight: 200 (in bath) / 450 (without bath) kg Achieveable surface quality: Ra: 0.30 µm Maximum cutting rate: 300 mm²/min Available wire diameters: 0.20 – 0.33 mm Water bath machine with automatic wire threading and re-threading after wire breakage With manual front door (accessible from 1 side) Incl. AGIEJOGGER handbox for convenient setup AGIE HSS-C generator AGIEVISION control Dimensions (length x width x height): 1640 x 2040 x 2220 mm Net weight: 2580 kg Our machines are cleaned and overhauled after we receive the order. A test cut is then carried out with the best surface for acceptance. You receive a 6-month warranty on the machine. We are happy to offer you commissioning and training on site.

Year of construction: 2006, condition: refurbished (used), AGIECUT Challenge 3 eCut Year of manufacture: 2006 Travel ranges: X = 500 mm, Y = 350 mm, Z = 256 mm Travel ranges U/V axis: +/- 70 mm Maximum taper: 30° at 100 mm height Maximum workpiece dimensions: 1050 x 650 x 250 mm Maximum workpiece weight: 400/800 kg Achievable surface quality: Ra: 0.2 µm Available wire diameters: 0.10 – 0.33 mm Wire EDM machine with automatic wire threading With automatically lowerable tank (accessible from 2 sides) Incl. AGIEJOGGER hand box for convenient setup Incl. AGIESETUP 3D AGIEVISION control AGIE generator with eCut technologies for faster and more efficient machining Dimensions (length x width x height): 2800 x 2400 x 2220 mm Net weight: 4500 kg After receiving your order, we will clean, overhaul, and thoroughly test the machine. Subsequently, we will commission the machine at your facility. You will receive a 6-month warranty on the machine. We would be pleased to offer you the following additional services: - Control and maintenance training - Cooling unit Ijdpfsgfm Rrjx Achoba - Programming system - Consumables - Clamping devices - Transport

Condition: refurbished (used), Year of construction: 2005, functionality: fully functional, travel distance X-axis: 300 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 250 mm, workpiece weight (max.): 200 kg, quill stroke: 250 mm, AGIE Spirit 2 Year of manufacture: 2005 APG FORM Control Travel paths: X = 300 mm, Y = 250 mm, Z = 250 mm Max. workpiece size: X = 500 mm, Y = 400 mm, Z = 185 mm Max. workpiece weight: 200 kg Max. electrode weight: 25 kg Distance table – chuck: 190 – 440 mm Iodpsxt N Hkefx Achsba AGIE APG Spirit Generator – Working current 80 amperes Best achievable surface finish Ra 0.2 µm Including pneumatic chuck Erowa ITS 50 or 3R (at your choice) Including 4-position electrode changer in the magazine Net machine weight: 1,280 kg Machine dimensions (L x W x H): 1850 x 2100 x 2360 mm The machine will be cleaned, serviced, and subsequently tested after receipt of order. We are happy to commission the machine for you as well.

Condition: refurbished (used), Year of construction: 2007, functionality: fully functional, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 256 mm, AGIECUT Challenge V2 Iedjwqcm Uopfx Acheba Year of construction 2007 Travels (X/Y/Z): 350 x 250 x 256 mm Travels (U/V): +/- 70 mm Maximum taper: 30° at 100 mm Maximum workpiece dimensions (length/width/height): 750 x 550 x 250 mm Maximum workpiece weight (with/without bath): 200/450 kg Best achievable surface: 0.2 µm Ra Available wire diameters 0.10 - 0.33 mm Incl. AGIE universal clamping frame Incl. AGIE JOGGER handbox Incl. console with USB connection The machine will be cleaned, overhauled and tested by us upon receipt of order. We are also happy to offer commissioning and training.

Condition: used, Year of construction: 2001, overall weight: 3,350 kg, total length: 2,100 mm, total width: 2,000 mm, total height: 2,300 mm, CHARMILLES TECHNOLOGIES ROBOFIL 510with Charmilles control system. Travel paths X/Y/Z: 500 x 350 x 400 mm. Equipped with Erowa chuck, Erowa ITS rotary changer (24-fold), ManoSet XL, and a comprehensive clamping package. Includes additional flushing, water/water heat exchanger, and water cooling unit. Documentation available. Used, functional.Connection 3~ / 400 V / 50 Hz, power 10 kVA, current 15 A.Automatic wire tensioning, precise wire guidance, stable construction.Control console (Siemens), protective devices, emergency stop. Travel X-axis: 500 - mm Weight approx.: 3,350 kg Control: CNC-Steuerung Dimensions (LxWxH) approx.: 2100 x 2000 x 2300 mm Travel Y-axis: 350 - mm Travel Z-axis: 400 - mm Year of construction: 2,001 Condition: in working order Terms of payment: 100% prepayment before pick-up Terms of delivery: From foundation under power: Yes Ibodpfey S Axtsx Achja

Condition: ready for operation (used), Year of construction: 2007, operating hours: 56,908 h, travel distance X-axis: 800 mm, travel distance Y-axis: 550 mm, travel distance Z-axis: 525 mm, total height: 510 mm, total width: 1,000 mm, wire diameter (max.): 0.3 mm, product length (max.): 1,300 mm, number of axes: 5, wire diameter (min.): 0.1 mm, This 5-axis +GF+ AgieCharmilles AGIECUT PROGRESS V4 was manufactured in 2007. It features a maximum workpiece dimension of 1,300 mm x 1,000 mm x 510 mm and can handle a maximum workpiece weight of 3,000 kg. The machine offers impressive axis travels, including X-axis travel of 800 mm and Y-axis travel of 550 mm. If you are looking to get high-quality wire EDM capabilities, consider the +GF+ AgieCharmilles AGIECUT PROGRESS V4 machine we have for sale. Contact us for further details. • Capacity & workpiece dimensions: • Max. workpiece size (L x W x H): 1,300 mm x 1,000 mm x 500/510 mm • Max. workpiece weight: 3,000 kg Ijdpfxoy Uxd Ds Achoba • Axis travels: • U/V-axis: ±70 mm • Max. taper angle: ±30° at 500 mm height

Condition: ready for operation (used), Year of construction: 2002, travel distance X-axis: 500 mm, travel distance Y-axis: 350 mm, travel distance Z-axis: 426 mm, wire diameter (max.): 0.3 mm, overall weight: 3,900 kg, number of axes: 5, wire diameter (min.): 0.15 mm, This 5-axis AGIE Classic 3s wire EDM machine was manufactured in 2002. It features an X-axis travel of 500 mm, Y-axis travel of 350 mm, and Z-axis travel of 426 mm. The machine is equipped with a submerged head and includes a chiller, resin filters, and a wire feed/recovery system. If you are looking to get high-quality wire EDM capabilities, consider the AGIE Classic 3s machine we have for sale. Contact us for further details. • U/V axes travel: ±70 mm • Number of controlled axes: 5 (X, Y, Z, U, V) • Taper cut: up to ±30° • Generator: MC 3S (Lista 030.844) • Axis driver (DA): DA MC 3S (Lista 030.834) • Electrical cabinet: Cabinet Classic 3S (Lista 027.254) • Power supply voltage: 3×400 V / 50 Hz • Installed power: 9 kVA • Rated current: 14 A • Dielectric: Deionized water • Heads type: Submerged with wire guide nozzles • Wire drive motor: +GF+ / Maxon Motor (Swiss made) • Circuit diagram: 628.992 Additional equipment • MTA chiller (included in the sale) • Resin filters • Deionizers • Wire feed/recovery system Ibodpfx Ajy Ulp Techea

Condition: used, Year of construction: 2004, Working range 1.050 x 650 x 250 mm max. workpiece weight 400 (800) kg control Agievision AGIE max. conicity 30° / 100mm travel -x axis 500 mm travel -y axis 350 mm travel -z axis 426 mm travel U x V-axis mm rapid traverse X-axis 3 m/min rapid traverse Y-axis 3 m/min rapid traverse U-axis 0,6 m/min Ibjdpfxow Spa Ne Achja rapid traverse V-axis 0,6 m/min rapid traverse Z-axis 0,6 m/min wire dia. 0,2...0,33 mm total power requirement 12,1 kVA weight of the machine ca. 3,9 t dimensions of the machine ca. 2,8 x 2,4 x 2,3 m Wire Eroding Machine AGIE - Agiecut Progress 3

Condition: repair required (used), Year of construction: 1987, EDM sinking machine, manufacturer AGIE, type: EMT 1.20, year of manufacture: 1987. Ibjdeix Nqhopfx Achoa Travel ranges: X 250 mm, Y 160 mm, Z 200 mm with R3 adjustable head. Further details can be found in the data sheet.

Year of construction: 1988, condition: used, Manufacturer: ONA Electro-Erosion, S.A. (Spain) Ibjdjwf E Auspfx Achea Model: ONA-COMPACT 30 Year: 1988 Manufacturing Number: 5026/5912 Registration Number: 5026/8812 Type: Electrical Discharge Machine (EDM) - Die sinking Voltage: 220 V Current: 5.6 A Pulse Power: 2 x 0.75 HP Apparent Power: 2.13 KVA Frequency: 50/60 Hz Estimated Table Travel: 300 x 200 mm Dielectric Tank Capacity: 100-150 L Approximate Weight: 1000-1200 kg

Condition: ready for operation (used), Year of construction: 2005, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 250 mm, controller manufacturer: AGIE, number of axes: 3, This 3-axis AGIE Hyperspark 2 Exact with Erowa was manufactured in 2005. It features an X-axis travel of 350 mm, Y-axis travel of 250 mm, and Z-axis travel of 250 mm. The machine is equipped with AGIE VISION 4 Software and includes an EROWA ROBOT MULTI with 60 ITS 148 places and 240 ITS 50 magazine places. If you are looking to get high-quality die-sinking EDM capabilities, consider the AGIE Hyperspark 2 Exact machine we have for sale. Contact us for further details. Isdpfx Acsy S A Dcjhsba • EROWA ROBOT MULTI with 60 ITS 148 Places and 240 ITS 50 Magazine Places

Condition: excellent (used), Year of construction: 1997, operating hours: 16,100 h, functionality: fully functional, travel distance X-axis: 500 mm, travel distance Y-axis: 350 mm, travel distance Z-axis: 500 mm, workpiece weight (max.): 800 kg, total height: 3,000 mm, total width: 1,700 mm, total length: 2,840 mm, table width: 600 mm, quill travel distance: 500 mm, type of input current: three-phase, table length: 800 mm, feed length X-axis: 500 mm, feed length Y-axis: 350 mm, overall weight: 3,500 kg, tank capacity: 550 l, Equipment: documentation/manual, Agie Compact 3 CNC EDM machine for sale. 1997 machine Iodpfjzhwy Ujx Achoba Fitted with System 3R Macro chuck on C axis. 10 station tool changer 16100 machining hours Macro - mini chuck shown in picture not included in sale

Condition: ready for operation (used), functionality: limited functionality, machine/vehicle number: 009, travel distance X-axis: 420 mm, travel distance Y-axis: 320 mm, travel distance Z-axis: 350 mm, Tool changer; Tank - 900x600 mm Iedor Iid Ejpfx Achsba Stroke - 420x320x350 mm

Condition: ready for operation (used), Year of construction: 2006, operating hours: 37,021 h, travel distance X-axis: 500 mm, travel distance Y-axis: 350 mm, travel distance Z-axis: 256 mm, total height: 2,220 mm, total width: 2,400 mm, wire diameter (max.): 0.33 mm, overall weight: 4,400 kg, controller manufacturer: AGIE, controller model: Software version 07.08.01., product length (max.): 2,800 mm, number of axes: 3, wire diameter (min.): 0.07 mm, This AGIE Agiecut VERTEX 3 Erosion machine was manufactured in the year 2006 in Switzerland and has 37021 erosion hours. It is equipped with an Agievision 5 Software version 07.08.01 control unit. • Control: Agievision 5 (software version 07.08.01) • Condition: Excellent; regular maintenance; major service recently completed; fully operational; can be tested under power • EDM operating hours: approx. 37,021 h • Travels (U/V): ±70 / 70 mm • Distance for clamping: 1,100 mm • Max workpiece dimensions: 1050 × 650 × 250 mm • Max workpiece weight: submerged 400 kg / non-submerged 800 kg • Max cutting height: up to 250 mm • Taper capability: ±30° / 100 mm • Positioning • Max manual speed: 2 m/min • Max programmable speed: 3 m/min • Resolution: 0.0001 mm • Geometric tolerances: per manufacturer specifications • Wire system • Wire diameter range: 0.07–0.33 mm (standard 0.20 mm) • Wire spool capacity: up to 25 kg • Wire tension: 0–25 N • Wire speed: 60–300 mm/s • Wire feed: semi-automatic • Wire disposal: chopper system • Equipment & features • Automatic wire threading system • Threading nozzles: 2 mm (optional 1 mm / 0.6 mm) • Combined wire guide system and cylindrical wire guide • Electronic handwheel (manual control) • Remote control with LCD display • TFT control screen (1024 × 768) • Keyboard and mouse control Dimensions Ibedpfx Aey D N I Eochoa Machine Depth 2800 mm

Condition: ready for operation (used), Year of construction: 2001, functionality: fully functional, machine/vehicle number: 331965, workpiece weight (max.): 500 kg, travel distance X-axis: 400 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 200 mm, wire diameter (max.): 0.25 mm, No reserve price – guaranteed sale to the highest bidder! TECHNICAL DETAILS Ibjdpjyz Rxaefx Achsa X-axis travel: 400 mm Y-axis travel: 250 mm Z-axis travel: 200 mm (U/V) axis travel: 400 x 250 mm Taper angle: +/- 30° at 200 mm height Workpiece weight: 500 kg Workpiece height (max): 200 mm Workpiece width (max): 500 mm Workpiece length (max): 850 mm MACHINE DETAILS Standard wire guides: 0.25 mm Dimensions & weight Dimensions (L x W x H): 1,800 x 1,600 x 2,180 mm Machine weight: 2,190 kg Injection pressure upper nozzle: 0 - 11.5 bar Injection pressure lower nozzle: 0 - 11.5 bar