Used Milling Cnc Machine for sale (65,533)

Condition: new, Year of construction: 2024, functionality: fully functional, - Swiveling control panel - CNC control SIEMENS 828D - Motor for horizontal and vertical spindle - Feed motors with inverter - Ball screws for X/Y/Z axes - Automatic 2-stage gear box for spindle speeds - 1 long milling mandrel 27 mm - 3 reducing sleeves (MK1, MK2, MK3) - Pneumatic hydraulic clamping system for the vertical spindle - Spindle protection with safety switch - Protective cover in the work area with electrically secured doors - Counterholder for horizontal milling - LED work light - Automatic central lubrication system - Safety handwheels for X/Y/Z axes - Coolant system with chip tray - Guideway covers - Base plates and adjusting screws - Operating tools - Technical documentation - CE version - Colors: * RAL 7024 - Graphite gray * RAL 7035 - Light gray Lhjdpfx Anjvupa Refei Technical data: Fixed angle table: - Dimensions of the work surface: 1,000 x 500 mm - T-slots: Number / width x distance: 8 pieces / 14 x 63 mm - Max. table load: 250 kg Vertical table: - Dimensions of the work surface: 1,200 x 250 mm - T-slots: Number / width x distance: 3 pieces / 14 x 63 mm Travel paths: - Axis travel paths: automatic/manual - Longitudinal (X): 600 mm - Transverse (Y): 500 mm - Vertical (Z): 400 mm Feed rates: - Control: stepless - Range (X,Y,Z): 0 – 2,000 mm/min. - Rapid traverse - X,Y,Z axes: 5,000 mm/min. - Rapid traverse - Z axis: 4,000 mm/min. Horizontal spindle: - Tool holder: DIN 2080 / ISO 40 - Speed range (2 levels): 0 – 3,200 rpm. Vertical milling head: - Tool holder: DIN 69871 / / ISO 40 - Speed range (2 levels automatic): 0 – 3,200 rpm - Head swivel: +- 90° - Distance spindle nose/angle table: min/max.: 70 – 470 mm - Distance spindle center to column: min./max.: 160 / 660 mm Motors: Main drive power: 7.00 kW Feed motor power X-Y-Z: 2.85 KW Dimensions and weight Dimensions (W x D x H): 2,850 x 1,950 x 1,900 mm Weight: 1,950 kg

Condition: used, Year of construction: 2007, travel distance X-axis: 8,000 mm, travel distance Y-axis: 2,100 mm, travel distance Z-axis: 1,300 mm, spindle speed (max.): 6,000 rpm, spindle speed (min.): 36 rpm, table width: 5,500 mm, table length: 2,600 mm, total height: 4,900 mm, total width: 16,200 mm, total length: 9,000 mm, overall weight: 55,100 kg, CNC Floor Type Bed Milling Machine CNC Control Heidenhain iTNC 530 Controlled NC Table 1600 x 1600 mm Lhodpeza Egnsfx Anfei Table dimensions 5500 x 2600 mm Movement X-axis 8000 mm Movement Y-axis 2100 mm Movement Z-axis 1300 mm Movement W-axis 1000 mm C-axis-swivel of milling head body 360 ° A-axis-swivel of milling head 180° Spindle speed 36 - 6.000 R/min Spindle motor 42 / 30 kW Spindle taper DIN 69871-SK 50 Tools in tool magazine 48 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: used, Year of construction: 2000, travel distance X-axis: 9,000 mm, travel distance Y-axis: 1,500 mm, travel distance Z-axis: 1,500 mm, table width: 1,200 mm, table load: 5,000 kg, table length: 9,500 mm, Bed Milling Machine 5-axis Table size 9500 x 1200 mm. Movement x-Axis 9000 mm. y-Axis 1500 mm. Ledpfozauvfsx Anfehi z-Axis 1500 mm. Max table load 5000 kg/mtr Swiveling of vertical milling head 1°x1º CNC Control Heidenhain TNC 430 CB 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: excellent (used), Year of construction: 1998, functionality: fully functional, feed length X-axis: 500 mm, feed length Y-axis: 250 mm, feed length Z-axis: 160 mm, travel distance X-axis: 500 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 480 mm, spindle speed (max.): 9,000 rpm, feed rate X-axis: 2 m/min, feed rate Y-axis: 2 m/min, feed rate Z-axis: 1 m/min, spindle speed (min.): 100 rpm, quill stroke: 160 mm, table width: 320 mm, table length: 880 mm, X-500, Y-250 , Z- quill stroke 160 , W- traverse path machine head 480 , table 880 x 320 , max. 320 kg , fixture SF 32 , 100-9000 rpm , 5 kW , 60 Nm , Heidenhauin TNC 124 Many accessories Ljdpfxoq R Rb He Anfjhi

Year of construction: 2016, condition: used, overall weight: 300,000 kg, total length: 16,000 mm, total width: 9,000 mm, total height: 8,000 mm, Waldrich Coburg 17 S-10 FP 300 NC / 5 m – CNC Gantry Milling MachineMachine: 17-10 FP 300 NC / 5 mSerial Number: 2.8304.06Original Year of Manufacture: 1983In 2016, it was comprehensively overhauled and modernized by the manufacturer Waldrich Coburg. The machine is equipped with a modern Siemens SINUMERIK 840D sl control system and is ideally suited for heavy-duty machining of large and complex workpieces in machine, tool, mold, and power plant construction.The delivery includes a Universal Fork Milling Head USP 300 C 350 with B-axis as well as an additional Angle Milling Head WFU 500 SZ 400 F17, ensuring versatile machining capabilities for demanding milling tasks.The machine features a modern full protective enclosure, coolant system, chip conveyor technology, and extensive technical documentation including circuit diagrams and overhaul documentation.The system has been professionally dismantled and packed in containers.It is located at the Port of Hamburg and is immediately available and ready for worldwide shipment.Manufacturer: Waldrich CoburgOverhauled by Waldrich Coburg (2016)Siemens SINUMERIK 840D slUniversal Fork Milling Head USP 300 C 350Additional Angle Milling Head WFU 500 SZ 400 F17Workpiece weight up to 100 tFull protective enclosureExtensive technical documentation availableDismantled and ready for loadingLocation: Port of Hamburg, GermanyImmediately available Passage between the uprights: 3,500 mm 5-axis machining: Yes Travel Y-axis: 3500 - mm Weight approx.: 300,000 kg Travel W-axis: 800 - mm Travel Z-axis: 2050 - mm Tool holder type: ISO 50 Travel X-axis: 5700 - mm Movement B-axis: 0 - 180 ° Ljdpfxezc Sagj Anfehi Dimensions (LxWxH) approx.: 16000 x 9000 x 8000 mm Year of construction: 2,016 Condition: unchecked Terms of payment: 100% prepayment before pick-up Terms of delivery: FOB Free On Board under power: No

Condition: good (used), Year of construction: 2008, 1 used CNC turning/milling center Gildemeister type TWIN 65 RG 2 year 2008 with Siemens 840 D Maximum turning length (travel in the Z axis) 650 mm Maximum turning diameter over bed 250 mm Maximum length of travel in the X-axis 300 mm Maximum feed speed X-axis 30 m/min Maximum feed speed Z axis 30 m/min Maximum main spindle power 35 kW Lhodjq T I Izjpfx Anfji Spindle diameter 65 mm Minimum main spindle speed 20 1/min Maximum main spindle speed 5000 1/min Lathe length 7000 mm Lathe width 4700 mm Lathe height 2500 mm Lathe weight 10 t Machine equipment Y axis Irco loading magazine ILS RBK 1200 mm Workpiece pick-up device Technical data Errors excepted Please note that the machine is sold without chucks, as these remain with the seller!

Year of construction: 2023, operating hours: 5,027 h, condition: excellent (used), functionality: fully functional, Equipment: documentation/manual, We are offering this very well-maintained Halter CNC Automation Millstacker Premium 25 handling robot for CNC milling machines, year of manufacture 2023, with very low operating hours. Custom modifications deviating from the standard model that were carried out for us: Lhedpfx Asy Nmmijnfoi 1. An individual deposit position (in our case, onto a chute into a water bath) was added as an option. This setup also allows all 12 stacking positions to be loaded with raw parts—whereas when depositing onto the table, only 11 stacking positions can be loaded with raw parts. 2. Customized adjustment of the angular alignment in the magazine. As a result, longer/larger parts can also be placed lengthwise between the bars when diagonal placement is no longer possible. 3. An additional set of longer support bars was manufactured to securely position larger parts. If you have any questions or require more information, please feel free to send us a message or call us.

Condition: excellent (used), Year of construction: 1987, Travel X/Y/Z 600/600/460 mm, 21 speeds 31,5 - 3150 rpm, motor 4,0 KW, spindle ISO 40, control Heidenhain TNC 150, table size 900x550 mm, hydraulic tool clamping, coolant device, spash guard, rapid feed, horizontal milling device, tilting turning table, clamping set, machine feet, manual, TOP condition Lhsdpfxjpcf D Io Anfoi

Condition: good (used), Mikron WF 41C CNC Universal Milling and Boring Machine Professional, extremely robust MIKRON WF 41C CNC universal milling and boring machine. Thanks to its sturdy construction, the machine is ideally suited for workshops, prototype manufacturing, maintenance, or demanding toolmaking applications. The machine is equipped with the proven HEIDENHAIN TNC 155 contouring control. It is extremely easy to program directly at the machine thanks to plain-language conversational guidance; it supports graphic simulations and allows for the easy loading of external CNC programs via the serial interface (ideal for CAD/CAM applications). Technical Data Overview CNC Control Model: HEIDENHAIN TNC 155 Operating modes: Manual operation (like digital readout), positioning with manual input, single block, block sequence, program test (graphic simulation) Interface: V.24 / RS-232-C for data transfer Feed Drives & Travel Ranges X-axis travel (table longitudinal, automatic): 630 mm Y-axis travel (spindle slide transverse, automatic): 500 mm Z-axis travel (table vertical, automatic): 460 mm Feed rate: Infinitely variable from 1 – 3000 mm/min in all 3 axes Rapid traverse speed: X- and Y-axis: 6000 mm/min | Z-axis: 4000 mm/min Max. vertical installation height: 559 mm (between vertical milling head and angle table) Milling spindle drive Spindle speeds: 21 gear stages Speed ​​range: 31.5 – 3150 rpm Spindle motor power: 6.0 / 8.0 kW Tool holder: ISO 40 / M16 with pull stud groove (SK 40 DIN 2080) Quill travel (vertical): 90 mm Table geometry & workpiece capacity Angle table clamping surface: 500 x 1000 mm T-slots: 7 (spacing: 63 mm, width: 14-H7 mm) Lodpszcqf Iefx Anfshi Vertical clamping surface: 397 x 550 mm (with 4 x 4 M16 threaded holes, 90 mm spacing) Max. recommended workpiece weight: 500 kg Electrics & cooling Electrical connected load: 13.5 kW Coolant tank volume: approx. 100 liters Dimensions & weights Machine dimensions (machine only): 1745 mm (L) x 1501 mm (W) x 2124 mm (H) Max. operating footprint (incl. control arm): 2930 mm (L) x 2115 mm (W) x 2125 mm (H) Machine weight (net): 3100 kg (incl. vertical milling head and angle table) "Everything from a single source: We would be happy to offer you suitable bank financing for your project." komplett-konzept.leasingo.de You can find more items—new and used—in our shop! International shipping costs on request!

Condition: good (used), Year of construction: 1998, Mikron UM 710/900 Universal Milling Machine High-precision universal tool milling machine from the renowned Swiss manufacturer MIKRON, model UM 710/900. The machine comes from a well-maintained environment and stands out for its hallmark Mikron precision and generous working area (up to 900 mm travel in the X-axis). It is ideally suited for toolmaking, prototyping, training purposes, or demanding repair workshops. Technical specifications at a glance (manufacturer data): Working range & axes: Longitudinal travel (X-axis): 710 / 900 mm Cross travel (Y-axis): 630 mm Vertical travel (Z-axis): 500 mm Work spindle: Tool holder: SK 40 / DIN 69871 Gear stages: 4 Speed ​​range: variable (vertical & horizontal) Main drive & feed: Spindle drive power: 11 kW (at 44% duty cycle) / 7.5 kW (at 100% duty cycle) Feed rate (X, Y): 0 – 10,000 mm/min (programmable) Feed rate (Z): 0 – 8,000 mm/min (programmable) Rapid traverse (X, Y / Z): 10 m/min / 8 m/min Clamping table (angle table): Clamping surface: 600 x 1,200 mm T-slots: 9 (14-H7, 63 mm spacing) Max. table load: 500 kg Electrics, dimensions & weights: Connected load: Total installed nominal power 21.5 kW Lhsdpfxjzcqcge Anfei Operating voltage: 3 x 400 V - 50 Hz Coolant system: 150-liter capacity Machine weight: approx. 4,300 kg (incl. protective enclosure) "Everything from a single source: We would be happy to offer you suitable bank financing for your project." komplett-konzept.leasingo.de You can find more items – new and used – in our shop! International shipping costs on request!

Condition: excellent (used), functionality: fully functional, feed length X-axis: 700 mm, feed length Y-axis: 550 mm, feed length Z-axis: 550 mm, travel distance X-axis: 700 mm, travel distance Y-axis: 550 mm, travel distance Z-axis: 550 mm, HERMLE UWF 1001 CNC milling machine With CNC control, HEIDENHAIN / Type: TNC 155 Measuring probe / Coolant system / Chip conveyor Enclosure / Cabin / Control cabinet: 1260 x 500 x 1700 mm Lodpfozcmz Eex Anfehi Travel paths: 700 x 550 x 550 mm / Clamping table area: 1000 x 490 mm

Condition: good (used), Year of construction: 2001, CNC bed-type milling machine, manufacturer: IBERIMEX-MVR Type: UH-1250, year of manufacture: 2001 Control system: Heidenhain TNC124 Lhedpfx Asd Eranonfei Travel distances: X 1250 mm, Y 500 mm, Z 460 mm Clamping table: 360 mm x 1800 mm Spindle mount: ISO50 Machine with full enclosure. Further data can be found on the machine data sheet. Machine in good condition.

Condition: good (used), Year of construction: 1988, CNC milling machine Lhjdpoich Ehjfx Anfji Manufacturer: MAHO, Type: MH 500 W, Year of construction: 1988, Heidenhain TNC 232 B control system. Equipped with a counter bearing for horizontal milling. Spindle connection: ISO 40 Spindle speeds: continuously variable, 20 - 4000 rpm Feed rates: 1-3000 mm/min Travel distances: X 500 mm, Y 380 mm, Z 350 mm Table: 700 mm x 350 mm Weight: approx. 2000 kg. Machine documentation available. Machine is ready for demonstration.

Condition: good (used), Year of construction: 1993, CNC universal milling machine, DMG MORI, Type: MH 600 C Ledpfxjiihxhe Anfehi Control system: MAHO 532, year of manufacture: 1993. Equipped with an automatic swivel milling head (G17/G18) and B-axis rotary table. Without tool changer. Further data can be found in the data sheet. Complete machine documentation and data backup available. Good overall condition.

Condition: good (used), Year of construction: 1986, CNC universal milling machine Manufacturer: DECKEL, Type: FP5NC, Year of manufacture: 1986, Control system: DIALOG 4 Lodpjdtdahsfx Anfshi We only offer spare parts. Please inquire about what you need.

Condition: good (used), Year of construction: 1988, CNC universal console milling machine, manufacturer: KLOPP, type: FWS15, year of manufacture: 1988. CNC path control system: Heidenhain TNC 155. Travel ranges: X 1170 mm, Y: 420 mm, Z: 420 mm Work table: 1500 x 400 mm Spindle connection: SK50 Spindle power: 15 kW Spindle speeds: 35-3550 rpm Support for horizontal milling, Coolant system, chip tray, Various tool holders, Complete machine documentation. Machine ready for immediate use. Lhedsbu Em Aepfx Anfoi Workshop inspected. New parameters and batteries installed on August 20, 2020. Good overall condition. Machine can be demonstrated under power.

Condition: good (used), Year of construction: 1990, CNC milling machine, manufacturer: TOS, type: FGS40CNC Control system: Heidenhain TNC 355, year of manufacture: 1990 Travel distances: X 1000 mm, Y 500 mm, Z 500 mm Ledpodtfhqsfx Anfjhi Spindle mount: ISO 50.

Year of construction: 2017, condition: ready for operation (used), X-axis: 550mm, y-axis: 305mm, z-axis: 460mm, milling table dimensions: 800x320mm, T slots: 14mm/3 pieces/distance 100mm, max. table load: 300kg, spindle to table distance: 100-600mm, number of tool positions: 12, max. tool diameter: 70mm, max. tool length: 300mm, max. tool weight: 6kg, tool change time (T to T): 7s, milling spindle power S1 operation: 5.5kW, power S6 30% operation: 7.8kW, torque S1 operation: 35Nm, torque S6 30% operation: 50Nm, spindle holder: ISO 40/BT40x45°, coolant system pump output: 650W, tank capacity: 120l, compressed air minimum connection pressure: 0.6MPa (6bar), air consumption: 0.1-0.15m³/h at 0.6MPa, compressed air quality: ISO 8573.1 class 2, compressed air connection: 3/8 inch, connected load: 12.5kVA, control: Siemens SINUMERIK 808D MILLING, length: 2164mm, front width: 1520mm, side width: 1860mm, height: 2200mm, door opening range: 760mm, door opening width: 1055mm, foundation/installation area: 1520x2080mm, weight: 2.8t. An on site inspection is possible. Lhedpfxszcfk Eo Anfsi

Condition: good (used), Year of construction: 1992, Table surface area: 1850 x 710 mm Permissible table load: 3000 kg Travel ranges: Longitudinal, automatic (X): 1600 mm Lateral, automatic (Y): 710 mm Vertical, automatic (Z): 850 mm Spindle mounting: SK 50 Speed range: 20 - 2500 RPM Main motor power, AC: 15 kW Lodpsttamkjfx Anfjhi Transport dimensions L x W x H: 3650 x 2300 x 2700 mm Weight: 9400 kg Accessories / Special features: • CNC path control system, manufacturer HEIDENHAIN, model TNC 360 with 3 scales • Programming language "Plain text dialog" and DIN-ISO • Electronic handwheel HEIDENHAIN HR 330 with magnetic holder • 3D probing system HEIDENHAIN TS 120 • Main spindle compact unit RAC 3 • Control system prepared for 4th axis • Universal milling head system "HURON" with 2 levels, gears run in an oil bath • Hydraulic tool clamping • Coolant system • Central lubrication with interval • German electrical system, drives INDRAMAT • Operator control panel • Operating manual - Newly refurbished milling head, partially overhauled with new gears, seals and bearings - Oil dispenser for central lubrication renewed Operating hours: 10,032 Program runs: 3,288 Spindle ON: 2,569 Siegfried Volz Werkzeugmaschinen Rüschebrinkstr. 151-153 DE – 44143 Dortmund - Wambel / Germany

Condition: like new (used), Year of construction: 2021, functionality: fully functional, feed length X-axis: 300 mm, feed length Y-axis: 240 mm, spindle speed (max.): 22,000 rpm, spindle mount: MK 0, rotational speed (max.): 22,000 rpm, Equipment: documentation/manual, We offer this CNC milling machine, Isel ICV 4030EC, manufactured in 2021, which was used for the production of clichés. It is in like-new condition. Ledpfx Aney I Dp Sofohi Manufacturer: Isel Model: ICV 4030EC Year of manufacture: 2021 Condition: Like new Working area: 300x240 mm Features: servo motors, 1200 W spindle up to 22,000 rpm, tool changer for 4 SK16 tools, integrated computer, and RemoteNC software. Compact, fast, precise, and quiet machine. If you have any further questions or require more information, please feel free to send us a message or call us.

Condition: reconditioned (used), functionality: fully functional, travel distance X-axis: 8,300 mm, travel distance Y-axis: 2,000 mm, travel distance Z-axis: 2,500 mm, spindle speed (max.): 3,000 rpm, rotational speed (max.): 3,000 rpm, type of input current: three-phase, coolant supply: 15 bar, spindle motor power: 33,000 W, controller manufacturer: HEIDENHAIN, controller model: 430 CA, power: 0.033 kW (0.04 HP), Equipment: rotational speed infinitely variable, ANAYAK HVM 9000 – CNC moving column milling machine | 8300 mm x travel | Fully overhauled High-capacity CNC bed milling machine with moving column, reconditioned in workshop. Perfect for heavy-duty machining of large components with precision and reliability. 🛠 Key technical specifications: • X-axis travel: 8300 mm • Y-axis travel: 2000 mm • Z-axis travel: 2500 mm • Spindle power: 33 kW – 3000 rpm • Spindle taper: ISO 50 DIN 69871-B • Tool changer: 30 positions • Automatic axes: B and C • CNC Control: HEIDENHAIN TNC 430 CA • Internal coolant: 50 l/min at 15 bar • External coolant: 100 l/min 🔧 Full retrofit includes: • Regrinding and geometry adjustment of Y and column guides • Complete head overhaul: new bearings, seals, gears • Full electrical cabinet update under CE compliance • New telescopic covers, drag chains, and motor wiring • Machine tested and delivered with full documentation ✅ Ideal for: • Large-scale component machining • Energy, wind, and railway industries Lhsdpfx Anjqpd D Iofei • Mold making, aerospace structures, and shipbuilding 📌 Ready for immediate delivery. Power, scale, and accuracy in one robust CNC machine.

Condition: like new (used), Year of construction: 2007, Table size 2200 x 1000 mm Longitudinal travel 2050 mm Cross travel 1150 mm Vertical travel 760 mm Spindle speeds 12.000 rpm Spindle taper ISA 40 Power feed 1 - 8.000 mm/min Ljdpfx Anog Tdavofehi Rapid speed Z-axe 15 m/min Rapid speed X - Y axis 20 m/min Control Heidenhain IT 530 NC Tool change 40 pcs

Year of construction: 1989, condition: ready for operation (used), Weight: 1.5t, operating hours unknown, with documentation, machine vices and fixtures are available as accessories, the machine ran in one shift operation and was serviced regularly. An inspection on site is possible. Ledpfx Anszbb Spefohi

Condition: used, CNC Vertical Machining Center HURCO Type BMC 30/M Serial No: B3M92202056AB : 9650234 Year of construction 1996 CNC path control Ultimax 3 Travel X: 760 mm, Y: 460 mm, Z: 610 mm Table size (clamping surface) 1010 x 400 mm Table size (with water groove) 1120 x 500 mm Spindle holder SK 40 Distance spindle nose - table 150 - 760 mm Projection 450 mm Spindle speed 80 to 8000 rpm infinitely variable Feed rate 3 to 16,000 mm/min. Ljdpfx Anjtrhq Hsfehi Rapid traverse 24 m/min. Spindle drive 7.5 kW at 30 min / 5.5 kW at 100% Mains connection 400 Volt, 50 Hz - CNC path control Ultimax 3 (with hardware update e.g. TFT monitors) - Electronic handwheel - Indirect measuring system with rotary encoders on the ball screw spindle - Tool changer with 24 tool positions - Fully protected cabin with sliding door - Rotating control panel - spindle drives Yaskawa (Japan) - pneum. mechanical tool clamp - Coolant unit adjacent, pushed under from behind - trough rinsing Machine width 2400 mm Space required for transportation L x W x H 3400 x 2400 x 2550 mm Weight approx. 4800 kg good condition

Condition: used, CNC Vertical Machining Center HURCO Type BMC 25/M Serial No: ZB9-001-052 Year of manufacture: approx. 1995 Lhjdpjw Nklhofx Anfoi Travel distances X: 610 mm, Y: 410 mm, Z: 560 mm Table size (clamping surface) 845 x 400 mm Table size (with coolant groove) 1050 x 500 mm Spindle taper SK 40 Distance spindle nose - table 155 - 710 mm Table load capacity max. 500 kg Overhang 420 mm Spindle speed max. 10,000 rpm Feed rate 3 to 5080 mm/min Rapid traverse 10 m/min Spindle drive approx. 5.5 kW Power supply 400 Volt, 50 Hz - CNC path control Ultimax 3 with two TFT monitors - Electronic handwheel - Indirect measuring system with rotary encoders on the ballscrew - Tool changer with 20 tool stations - Full enclosure with sliding door - Swiveling control panel - Yaskawa (Japan) spindle drives - Pneumatic-mechanical tool clamp - Without coolant system – pump included – coolant tray missing Machine width 2400 mm Space requirement for transport L x W x H = 3000 x 2400 x 2650 mm Weight 4200 kg Good condition