Used Gambin Universal Milling Machine for sale (66,772)

Condition: good (used), Hello, Knjdpexykbisfx Ahgsb Universal milling machine FY-321 for sale. The machine is fully operational and in continuous use, with the possibility to test on site. The price stated in the advert is net and is subject to VAT. The machine can be inspected in Starachowice, at 13 Kwiatkowskiego Street. Telephone contact available from 7:00 to 16:00.

Condition: ready for operation (used), Year of construction: 2008, functionality: fully functional, 5-axis Milling Machining Centre | Brand: MATEC | Type: 30 HV Year of manufacture: 06/2008 Range of components: Steel, cast and welded structures. The large X-axis and the head, which can be swivelled through 105° in either direction, are ideal for multi-sided machining of long profiles or shafts. The machine can be inspected under power by appointment. Condition: In working order / ready for use. Operating hours ((September 7, 2026): Control on: 76.085 h Machine on: 62.198 h Program run: 26.653 h TECHNICAL SPECIFICATIONS Travels: - X-axis: 3.000 mm - Y-axis: 800 mm - Z-axis: 1.100 mm - A-axis: +/- 105° - B-axis: 360° Knsdjzyy Rmepfx Ahgeb - 1-axis NC swivel head, swivels through +/- 105 degrees - Speed range: 20 - 9.000 rpm - Drive power of motor spindle increased: 30 kW * Torque max.: 190 Nm * Boring capacity in steel: ca. 60 mm * Milling capacity: approx. 500 cm3 * Thread cutting: M30 SPECIFICATIONS: - CNC control system: HEIDENHAIN iTNC 530 - NC rotary table, brand: KESSLER, embedded in the machine table, SKH-NC 6/800 * Horizontal faceplate,diameter: 800 mm * Direct measurement system for the NC rotary table * Part accuracy: : +/- 12" * Load capacity max.: 2,5 tons * Tangential torque with clamping: max. 6.500 Nm, incl. motor (AC) with integrated rotary measuring system, hydraulic clamping and incl. additional CNC axis - Clamping plate: Width / length: 835 / 3.500 mm Number of T-slots: 7 Slot width: 18-H8 - Amperemeter for the main spindle drive - Tool magazine: 48 positions - Additional tool magazine: 48 positions, including tool changer, specialised software and control panel for loading tools whilst the machine is running in automatic mode - Working area: * Rapid speed: 30 m/min * Feed rate: 30.000 mm/min - Spindle: * Cone/tool holder: SK40, DIN 69871 * Rotational speed: 9.000 / 30 kW - Internal coolant supply 40 bar (paper belt filter, tank capacity: 450 l) - High coolant pressure at the external nozzles High-pressure coolant pump, switchable via the M function in the parts programme to the external nozzles on the headstock, 20 bar. - Coolant supply flow monitor - Compressed air through the tool - Centralised oil lubrication - Oil mist extraction system - Direct measurement system: X, Y and Z axes - 3D measuring probe, brand: RENISHAW RMP 60, with radio signal transmission for control, including control software - Tool breakage detection - Tool length measurement - Fully enclosed work area with a roof; a completely enclosed work area. The loading doors are designed in such a way that loading by crane is possible at any time whilst they are open. - Safety fence fitted to the machine - Stronger linear guides for the Y-axis = 800 mm X = size 65, Y + Z = size 55 - Bellows with steel vanes - Rinsing gun - Electronic handwheel (portable), brand: HEIDENHAIN HR 410 - Chip conveyor - Workstation lighting (2-light) - Extraction system - Safety/machine guard glasses are being replaced - Compressed air refrigeration dryers - Documentation - CE marking Special features: - Zero-point clamping system - Swiveling head - The CNC rotary table, in combination with the swivel head, enables 5-sided or 3D machining of workpieces The sale does not include any clamping devices. Without guarantee of completeness and correctness of the technical information and the equipment. - Subject to prior sale -

Condition: good (used), Year of construction: 1995, functionality: fully functional, travel distance X-axis: 10,000 mm, travel distance Y-axis: 1,500 mm, travel distance Z-axis: 3,000 mm, - CNC control Heidenhain TNC 415B - controlled 2-axes NC-milling head 2,5° - coolant device -plate fields: 2x 4970mm x 1940mm Accessories: ca. 20 pieces tool tapers DIN 2080 with bolts DIN 69872 some spare parts like bevel gears for the milling head and ball screw for X-axis. Technische Daten / technical details: Verfahrweg X längs / X-travel longitudinal 10000 mm Verfahrweg Y quer / Y-travel cross 1500 mm Verfahrweg Z vertikal / Z-travel vertical 3000 mm Werkzeugschaft / spindle taper SK50 Drehzahlbereich (2-stufig) / spindle speed (2-steps) 35-3000 UpM /rpm Vorschub / infeed 6-10000 mm/min Eilgang X,Y,Z / rapid feed X,Y,Z 10, 15, 10 m/min Ksdpfx Ahjwrzkzogjnb Antriebsleistung Hauptmotor 100%ED / drive capacity main motor 100%ED 37 kW Gewicht der Maschine ca. / weight 54700 kg Technische Daten, Zubehör und Beschreibung der Maschine sind unverbindlich - Technical data, accessories and description of the machine are not binding.

Condition: good (used), Year of construction: 1994, x-travel 600 mm y-travel 400 mm z-travel 400 mm Table dimensions 630 x 350 mm reus 3700 U/min Weight 1800 kg Year 1994 Kedpezy Siuofx Ahgjnb control HEIDENHAIN TNC 124 quill stroke 60 mm tool taper ISO SK40 total power requirement 11 kW weight of the machine ca. 1800 kg dimensions of the machine ca. 2800 x 2000 x 2000 m

Condition: used, Year of construction: 2002, travel -x axis 880 mm travel -y axis 630 mm travel -z axis 630 mm control HEIDENHAIN - TNC426M number of spindle speeds 12.000 U/min Kodpfjyzt Aujx Ahgsnb numbers of positions in the tool changer (2 x 16) 32 Tool bore SK 40 surface area 1.250 x 700 mm table load 600 kg Milling machining centers - universal | DMG - DMU 80T equipped with B axis The machine is in good condition. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #Tags: 80 T | 80-T

Year of construction: 2005, condition: used, X-axis: 500mm, Y-axis: 450mm, Z-axis: 400mm, swivel rotary table dimensions: 630x500mm, max. table load: 200kg, swivel range: -5 to 110°, continuously variable speed: 20-10,000/min, drive power (100%/40% duty cycle): 9kW/13kW, torque (40% duty cycle): 82Nm, input resolution: 0.01mm, positioning tolerance: 0.010mm, rapid traverse: 24m/min, feed speed: 20m/min, number of SK40 tool positions (DIN 69871): 30, tool diameter (speed-dependent): D80-D130, max. tool length: 290mm, max. tool weight: 6kg, connected load: 17kW, control: Siemens 840D Powerline ShopMill, length: 4860mm, width: 4350mm, height: 2424mm, transport dimensions: 2210x2120x2150mm, weight: 4.05t, operating hours power-on time: 35,880h, spindle hours: 9609h. Equipment: digital drive and hydraulic clamping (positioning operation only), electronic angle display and plane transformation, chain magazine with double gripper, additional cabin door on the right, 80l coolant system, coolant/compressed-air switching, flushing gun, oil pan drawing, MDE interface (machine on, machine running, piece counter), documentation in German, 3D machine model for kinematic simulation in the CAM programming system (IGES, STEP format), numerous SK40 tool holders (DIN 69871), Heidenhain TS641 infrared touch probe, electronic handwheel, additional V24 RS232 interface on the control cabinet. An on-site inspection is possible. Knjdjzxr Rcspfx Ahgob

Condition: ready for operation (used), Year of construction: 2010, x-travel 280 / 300 mm y-travel 250 / 270 mm z-travel 300 / 310 mm turning speeds 45 - 2240 U/min turning speeds 18 Stufen spindle taper ISO 40 quill stroke 60.0 mm table: 670 x 320 mm table load 150 kg feed range 12.5 - 630 mm/min feed 18 Stufen rapid traverse 1.200 mm/min workpiece weight max. 150 kg T-slots 5x 12 x 63 mm total power requirement 1.6 kW weight of the machine ca. 1100 kg range L-W-H 1265 x 1080 x 1620 mm New price ~ 25.000 Euro (!!) Special price upon request - in checked conditions - machinevideo - ?v=7IsC5cg9WlI Features: - Robust electric-driven universal milling machine - ACURITE 3-axis digital display * with pivoting control panel, front right * including emergency stop button - Electric adjustment of all axes (X/Y/Z axes) * Rapid traverse in all 3 directions - Pivoting milling spindle guard - Coolant system - Lower chip tray - Vertical milling head with quill adjustment Kjdpfx Asxabqnohgonb * Milling head rotation 90° * Tool holder ISO / DIN 40 / 2080 - Fixed angle table 670 x 320 mm * T-slot width x spacing 12 x 60 mm * Minimum distance between base table and spindle axis - 4 machine feet - Electrical diagram

Condition: good (used), Hello, For sale: Coordinate drilling machine and universal milling machine, type 6T83-1. Knjdpfjxyi Stjx Ahgeb The machine is fully operational and in continuous use; inspection and testing on site are possible. The price listed in the advertisement is net and is subject to VAT. The machine can be viewed in Starachowice, Kwiatkowskiego 13. Telephone contact available from 7:00 to 16:00.

Year of construction: 1987, condition: used, X-axis: 500mm, y-axis: 430mm, z-axis: 400mm, table dimensions: 510x450x410mm, max. table load: 250kg, angular clamping table: 800x390mm, feed rate x-/y-axis: 4-1600mm/min, z-axis: 4-1000mm/min, feed force: 5000N on all axes, rapid traverse x-/y-axis: 1.6m/min, z-axis: 1m/min, tool holder (DIN 2079): ISO 40, cutter drawbar thread: M16, hydromechanical tool clamping: 12,000Nm, quill stroke: 80mm, drive power: 3kW, 18-speed sliding-gear transmission: manually or automatically selectable, torque: 5Nm, spindle speed: 50-2500rpm, connected load: 6kW, control: Heidenhain TNC 114B (hand control type HS262), display resolution: 0.005mm, length: 1400mm, width: 1300mm, height: 1830mm, weight: 1.6t, space requirement: 2300x2300x2400mm, equipment: machine light, coolant tank: 18l, external coolant supply: 3bar, various tool holders, spindle tool. On-site inspection is possible. Knsdpfxszwfq Tj Ahgob

Condition: used, x-travel 600 mm y-travel 400 mm z-travel 400 mm table surface area 720 x 410 mm Knedpfjy It S Njx Ahgob spindle turning speed range 40 - 2000 U/min tool taper SK 40 total power requirement 3,0 kW weight of the machine ca. 1,4 t dimensions 1,8 x 1,6 x 1,9 m Milling machine with - Toolmaker's table - Heidenhain digital readout - Rapid traverse - Coolant system - Central lubrication - Machine feet - incl. drawer unit with contents

Condition: used, Universal Milling Machine DECKEL Type FP 1 Keder U St Uopfx Ahgenb Universal milling machine Machine No. 2101 – Year of manufacture: 1979 Manual travel X: 300 mm, Y: 160 mm, Z: 330 mm Table size: 600 x 210 mm Spindle taper: SK 40 – S20x2 Spindle speed: 40–2000 rpm, 16 steps Feed X and Y axes: 5 to 500 mm/min Rapid traverse: 1200 mm/min Motor power: 1.5 and 1.9 kW, pole-changeable Electrical connection: 380 Volt, 50 Hz - Stepless feed in X and Z axes - Spindle speed via 2 motor speeds and 8 gear steps - Quill movement at the vertical milling head: 60 mm - Vertical milling head can be swiveled and extended horizontally by 100 mm - Fixed angle table 600 x 210 mm - Coolant system integrated in the machine base - Standalone control cabinet - Original chip tray for mounting on the machine base - Electrical schematic available Required space (L x W x H): 1350 x 1100 x 1700 mm Weight: 770 kg Good condition

Condition: new, x-travel 1000 mm y-travel 360 mm z-travel 400 mm spindle taper ISO 40 ISO table: 1370 x 300 mm feed: 30-830 / 23-625 mm/min. turning speeds 45 - 1660 U/min distance spindle /table 60 - 460 mm rapid traverse Z Achse 750 mm/min throat 95 - 575 mm total power requirement 3.0 kW weight of the machine ca. 1505 kg range L-W-H 1740 x 1860 x 1900 mm - Large rectangular guide in y and z axes - ensure increased stability - 8x automatic feeds and rapid traverse in all axes - driven by servo motor - Universal milling head system "Huron", adjustable to all angular positions - Swiveling control panel with ergonomically placed switches - Heavy machine stand made of gray cast iron for vibration-free work - Very smooth running thanks to ground gears running in an oil bath - Upper arm with clearly structured gear box for the spindle speed - Digital position display for x, y and z axes included in delivery - Precisely surface-machined cross table with T-slots Scope of delivery - 3-axis digital display ES-12 H with LCD display - Drawbar spindle M16 - LED machine light - Feed for x, y and z axes - Coolant system - Counter bearing - Long milling arbor ISO 40 / 27 mm - Combined milling arbor ISO 40 / 27 mm - Coolant tray Kjdpfx Ahsxaak Tsgonb - Adjustable protective device - Central lubrication for x, y and z axes - Operating tool

Condition: ready for operation (used), Year of construction: 1969, x-travel 700 / 710 mm y-travel 275 mm z-travel 350 mm taper in main spindle ISA 40 table surface area 900 x 250 mm T-slots 3 x 18 x 60 Stk. turning speeds 32.0 - 2000 U/min feed stepless 15 - 750 mm/min voltage 400 V total power requirement 4.0 kW weight of the machine ca. 1400 kg range L-W-H 1000 x 1400 x 1800 mm from a training workshop (vocational school) Features: - Robust, electric-motor-driven universal milling machine Knedezkbnzopfx Ahgeb - With horizontal and vertical main spindles * Vertical main spindle can be swiveled 360° in two planes - Sturdy T-slot clamping table with 18 mm T-slots - Electric feed control - Stepless speed adjustment - Swiveling machine light - Control cabinet, installed on the right - Original operating instructions Machine data sheet

Condition: used, Year of construction: 2016, x-travel 560 mm y-travel 320 mm z-travel 400 mm turning speeds 25 - 2000 U/min turning speeds 18 Stufen spindle taper ISO 40 SK quill stroke 100 mm table: 320x1000 / 450x950 mm table load 125 kg feed range 5 - 600 mm/min feed 18 Stufen rapid traverse 1200 mm/min total power requirement 5,4 kW weight of the machine ca. 1780 kg. range L-W-H 1800 x 1500 x 1780 mm From a training workshop - good condition (!!) Commissioned in April 2017 Features: - 3-axis digital display - Ball screws on the X and Y axes - Rapid traverse in all 3 directions - Electromagnetic brake for spindle stopping - Coolant system - Chip tray - Vertical milling head with quill adjustment * Milling head rotation 90° * ISO 40 tool holder - Fixed box table 950 x 450 mm * Number/size of T-slots: 7 / 14.0 mm Kedpszmanxsfx Ahgjnb * T-slot spacing: 63 mm * Minimum distance between base table and spindle axis: 163 mm - Machine light - Slatted guard on the vertical column guide - Operatorâ??s manual

Condition: used, Year of construction: 1988, x-travel 870 mm y-travel 370 mm z-travel 400 mm table-size 310 x 1370 mm distance vertical spindle / table 50 - 450 mm feed - longitudinal/cross 20 - 800 mm/min 9 - 355 mm/min rapid traverse longitudinal and cross 3000 / 1375 mm/min spindle taper SK 50 spindle turning speed range 40 - 1750 U/min spindle speed: 12 Stück total power requirement 5,5 kW weight of the machine ca. 2,4 t dimensions of the machine ca. 1,9 x 2,0 x 1,5 m - Powerful CNC universal milling machine Knjdpsxlkw Ujfx Ahgob - Includes Fanuc control system - Kneading milling head - Automatic feeds on X/Z/Y axes - Central lubrication system - Coolant system - Pivoting machine light - Splash guard tray - Separate transformer

Condition: used, Univ. universal tool milling machine DECKEL, Type FP 1 Machine No. 51265, Year of manufacture approx. 1967 Travel distances X: 300 mm, Y: 150 mm, Z: 340 mm Table size 600 x 200 mm Spindle mounting SK 40 - S20 x 2 Spindle speed 40-2000 rpm, 16 speeds Motor power 1.0 and 1.6 kW, pole-changing Mains connection 380 volts, 50 Hz - Feed in the X and Z axes - Spindle speed via 2 motor speeds and 8 gear stages Knjdpfjghtvajx Ahgeb - Quill movement on the vertical milling head 60 mm - Swivel, rotary, and tilting angle table - Coolant pump in the machine base - Adjacent control cabinet Space required L x W x H 1100 x 1100 x 1600 mm Weight 690 kg Good condition

Condition: good (used), Travel X / Y / Z: 475 / 330 / 280 mm Table size W x D: 650 x 250 mm Quill stroke: 60 mm Spindle speed: 63 - 2800 rpm / 12 steps Mounting cone: ISO 30 / DIN 2080, ISO 40 / DIN 2080 Weight: approx. 950 kg Machine size W x D x H: approx. 1100 x 1400 x 1600 mm Spindle bore: 17.8 mm (24.8 mm) Movement range: Longitudinal travel. table: 330 mm Table: 330 mm* 1 handwheel rotation: 5 mm Vertical travel: Console: 475 mm* 1 handwheel rotation: 2 mm Transverse travel: Milling spindle carrier head: 400 mm 1 handwheel rotation: 5 mm *These two directions of movement are provided with automatic feed and can be controlled by programs. Shortest cycle time 15 seconds, or 4 program sequences per minute. Reading accuracy at the scale drums: 0.02 mm Knsdpfsd Dgdyex Ahgob Main motor: Milling head 2 speeds Engine: 1.1/1.5 kW, 1500/3000 rpm Automatic feeds: Rapid speed motor: 0.55 kW, 1000 rpm Rapid traverse lengthwise: 2500 mm/min Rapid traverse vertical: 1000 mm/min Working feed motor: 0.2 kW max. Control range in longitudinal direction 4 - 500 mm/min Control range in vertical direction: 1.6 - 200 mm/min Coolant device: Engine: 0.15 kW, 3000 rpm Coolant pump capacity: 20 l/min Coolant tank capacity: 30 l

Condition: good (used), Year of construction: 2009, functionality: fully functional, Technical details x-travel 4000 mm y-travel 1350 mm z-travel (Vert.) 1600 mm Knsdpfx Ahozzw Niogeb Control Heidenhain iTNC 530 table surface area 4200 x 1150 mm table load 13 t tool taper ISO 50 spindle turning speed - stepless 0 - 3000 U/min transmission ratio 2 spindle motor 28/38 kW feed range 5000 mm/min rapid traverse (X/Y) 12 m/min rapid traverse (Z) 10 m/min weight of the machine ca. 37 t dimensions of the machine ca. 12,9 x 6,53 x 3,79 m Additional information In January and October 2025 the milling head was overhauled (new bevel gears and bearings). Total costs 51.000,- Euro. Working hours (dated 31. July 2025): Machine on: 38.483 h Auto cycle: 12.798 h Spindle hours: 11.645 h A current geometry measurement report is available. * CNC-control HEIDENHAIN iTNC 530 * Electronic handwheel * 50-position tool changer * Controlled universal milling head, indexable 2.5 / 2.5 deg. * Coolant device * Cooling through the spindle * 2 chip conveyors * Oil cooler * Measuring probe * Machine documentation

Condition: used, Univ. universal milling machine DECKEL, Type FP 1 Machine No. 28317, Year of manufacture approx. 1960 Travel distances: X: 245 mm, Y: 150 mm, Z: 340 mm Table size: 600 x 210 mm Spindle mount, horizontal: MK 4 - S20 x 2 Spindle speed, vertical: 95-1900 rpm, 12 steps Spindle speed, horizontal: 60-1200 rpm, 12 steps Motor power: 0.8 and 1.1 kW, pole-changing Power connection: 380 Volt, 50 Hz - Spindle speed controlled via 2 motor speeds and 6 gear stages - Feed in the X and Z axes - Coolant system with mechanical pump in the machine base Knsdpfx Ahoiy Ekvogsb - Quill travel on the vertical milling head: 60 mm - Vertical milling head swivels +/- 90° - Metal substructure made of angle iron with machine feet Space requirement L x W x H: 1100 x 900 x 1650 mm Weight: 650 kg Good condition

Condition: used, Year of construction: 1978, x-travel 1.000 mm y-travel 340 mm z-travel 450 mm table: 1.300 x 400 mm spindle taper ISO 40 SK Knodpfx Aszf Nrdshgjb turning speeds 32 - 1.400 U/min spindle stroke 80 mm total power requirement 7,5 kW Features: - Universal console milling machine with HEIDENHAIN digital display - Mechanical tool clamping - Cooling system - Various SK 40 tool holders - Machine documentation in German

Condition: used, Year of construction: 1985, x-travel 500 mm y-travel 500 mm Knodpfxetv Ia Tj Ahgsb z-travel 350 mm table surface area 800 x 450 mm spindle taper: ISO 40 quill stroke mm feed - longitudinal/cross mm/min feeds vertical mm/min turning speed range max. 3150 U/min voltage 380 V / 50 Hz power capacity 4 kW weight of the machine ca. 1,7 t dimensions of the machine ca. 2,5 x 2,3 x 2,0 m • HEIDENHAIN TNC 155 - control, • with electrical hand wheel, • several tool tapers, • new set of bevel gears,

Condition: used, Year of construction: 1986, Technical details: x-travel: 1120 mm y-travel: 345 mm z-travel: 400 mm spindle taper ISO: SK50 spindle head swivable left - right: 90° ° Kedpfxsu Iy Hlj Ahgjnb Distance rear edge of table to column guideway: min./max.: 125 / 470 mm max. torque on the spindle: 280 kpm range of revolution per miute: 28 - 1400 / 18step U/min feed:: X/Y: 16 - 800 und Z: 5 - 250 mm/min Table dimensions: 1600 x 460 mm table surface area: 1400 x 330 mm table load: 1,5 t total power requirement: 14,5 kW machine weight approx.: 3900 kg dimension machine xH: 2,7 x 2,0 x 2,1 m dimensions electric cabinet: 0,47 x 0,8 x 1,5 m Equipment: 3-axis measuring device EISTA VISULESTA II E Accessories: Machine vice 155mm 2x counterholder and shaft 4x machine feet 2x cranks (for machine table and for vice) *

Condition: used, Year of construction: 1984, x-travel 410 mm y-travel 310 mm Knodpfxexlufpj Ahgjb z-travel 400 mm table-size 700 x 280 mm control Heidenhain TNC 145 tool adaptor SK40 turning speed range 40- 2.000 U/min rapid speed 1,5 m/min feed speeds 1500 mm/min power requirement 2.2 kW quill stroke 63 mm weight 1,3 t total power requirement 2,2 kW weight of the machine ca. 1,5 t dimensions 1,4 x 2,1 x 2,0 m Features: - New TFT screen - Coolant system - Hydraulic tool clamping - Milling head with spindle sleeve - Documentation

Condition: used, Universal Tool Milling Machine WEMAS - MAKOSON Type WM 2 Year of manufacture: 1992 Travel ranges X: 480 mm, Y: 350 mm, Z: 250 mm Table size: 800 x 400 mm Spindle taper: ISO 40 Quill vertical travel: 80 mm Spindle speed: 35 to 4000 rpm, 3 steps Feed X, Y, and Z: 1 to 850 mm/min, stepless Rapid traverse X, Y, and Z: 1 m/min Spindle drive: approx. 3 kW ?? Electrical connection: 400 Volt, 50 Hz - Swiveling control panel with HEIDENHAIN digital readout, type Positip 850 - Spindle speed via 3 gearbox stages and stepless adjustment via frequency converter - Conventional handwheels for X, Y, Z - Vertical milling head with drilling quill swiveling +/- 90° - Manual tool clamping with M16 thread Kjdpex Hkd Tsfx Ahgjnb - Manual central lubrication - Coolant system integrated in machine base - Control cabinet fixed to the machine - Fixed angle table Space requirement L x W x H: 1900 x 1700 x 1820 mm Weight: approx. 2000 kg In good condition

Condition: used, Year of construction: 1969, x-travel 710 mm y-travel 250 mm z-travel 400 mm table-size 1200 x 300 mm control konventionell tool adaptor SK40 turning speed range 50 - 2500 U/min total power requirement 2,2 kW weight of the machine ca. 1,7 t dimensions 2,1 x 2,0 x 1,6 m Features: - Digital display - Coolant system - Huron milling head - Emergency stop device Kedpfx Ahjx I Sf Uogjnb - Documentation