Used Chiron for sale (95)

Condition: ready for operation (used), Year of construction: 2001, travel distance X-axis: 450 mm, travel distance Y-axis: 270 mm, travel distance Z-axis: 310 mm, controller manufacturer: FANUC, controller model: Series 21i-M, spindle speed (max.): 18,000 rpm, spindle motor power: 14,000 W, number of axes: 3, This 3-axis CHIRON FZ 08 W was manufactured in 2001. It features a maximum spindle speed of 18,000 rpm and a robust tool interface with HSK-A40. The machine includes integrated pallet changer for efficient workpiece handling. If you are looking to get high-quality machining capabilities, consider the CHIRON FZ 08 W vertical machining centre we have for sale. Contact us for further details regarding this machine. • Condition: Machine is no longer functional and can only be used as a supplier of spare partsElectrical data • Kind of current: 3/N/PE ~ 50/60 Hz • Working voltage: 400 V • Control voltage: 230/24 V • Rating: 12 kVA • Rated current: 17 A • Fuse: 20 ASpindle • Tool holder: HSK-A40 • Tool interface: HSK • Spindle type: Water-cooled motor spindle • Max. torque: approx. 15 NmOther machine details • Workpiece changing system: Integrated pallet changer (W-type) Lhedpfxey Ex H Ho Ad Aof • Maintenance intervals noted: 8h, 50h, 200h, 500h, 2000h, 6000h • Lubrication requirements: INSK K11 / ALKANIA 2 (Shell)

Condition: excellent (used), Year of construction: 2020, Unique opportunity to purchase this high quality CHIRON 5-axis machining center for profiles. Built and first use in 2020. The spindle was replaced in June 2022 and currently has 4500 operation hours. Lhedpfxsyt I Uhs Ad Asf Machine is in very good condition and it can be inspected under power upon appointment. Availability: on request Including: Chip conveyor (scraper type) Profile bar feeder for bar lengths up to 6 m, for guiding profiles up to Ø 212 mm Coolant system TPF 350 / FKA 900 Coolant through the spindle Fixed 3D probe Type TS 27 R – RENISHAW Renishaw RLP40Q probe system Cnc control SIEMENS 840D X-axis 730 mm Y-axis 400 mm Z-axis 425 mm Maximum spindle speed 15,000 rpm Maximum torque 140 Nm Drilling capacity Ø 42 mm Thread tapping M30 Tool magazine capacity 20 tools Tool taper DIN 69893 HSK A63 Maximum tool diameter 65 mm Milling capacity 500 cm³/min in E355 steel Full technincal specifications in the attached document. Optional: ARMIN automatic robot cell (2024)

Condition: good (used), Year of construction: 2013, If some parts shown by hand, that parts not come with machine. Technical data shown on picture. Lhedey Awxpopfx Ad Aof

Condition: ready for operation (used), Year of construction: 1996, operating hours: 5,696 h, travel distance X-axis: 550 mm, travel distance Y-axis: 330 mm, travel distance Z-axis: 425 mm, controller manufacturer: FANUC, controller model: Series 21M, spindle speed (max.): 12,000 rpm, number of slots in tool magazine: 12, number of axes: 3, This 3-axis CHIRON FZ 12 S High speed was manufactured in 1996. It features an X-axis travel of 550 mm, Y-axis travel of 330 mm, and Z-axis travel of 425 mm. The machine has a spindle speed of 12,000 rpm and a tool capacity of 12 tools. If you are looking to get high-quality machining capabilities, consider the CHIRON FZ 12 S High speed vertical machining centre we have for sale. Contact us for further details. Ledpfxeywy Sne Ad Ashf • Installed options: Preparation for 4th and 5th axis (control cabinet ready) • Status: Powered on, fully functional • Machine hours: 5,696 h Additional equipment • Pneumatic vices • Approximately 40 tool holders • Chip tray Technical Specification Taper Size SK 30

Year of construction: 1962, condition: good (used), machine/vehicle number: 162487, Suction capacity: 50 l/min Max. operating pressure: 10 bar Lhedpfx Aodyp R Rsd Aef Compressor speed: 1400 rpm Boiler: Operating pressure: 10 bar Capacity: 50 l

Condition: good (used), CHIRON FZ 08 KS Magnum is a 5‑axis machining center engineered for precision, high accuracy and reliable production. Travels X450×Y270×Z310 mm; drilling 12 mm; tapping M8. Tool magazine 24 pos., tool Ø max 47 mm (100 mm free), length 160 mm, tool wt 1.2 kg. Spindle HSK‑A40 0–36000 rpm; spindle motor 7 kW; rapid 75 m/min; 3×400V 50Hz; air 6 bar; installed power 14 kW (19 kVA); machine ≈3400 kg; dims 2308×1405×2447 mm. Features: tool‑break control, RS232, switch‑cabinet air‑con, status light. Delivers tight tolerances for automotive, aerospace, medical, watchmaking. Lhsdpfxoyxn Hcs Ad Ajf

Condition: used, Year of construction: 2001, x-travel 550 mm y-travel 500 mm z-travel 400 mm Lsdpfx Ajynnu Dsd Aehf Control Siemens spindle tunring speed 12.000 U/min table surface area 1050 x 450 mm table load 500 kg 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. Subject to changes and errors in the technical data and information as well as prior sale!

Condition: used, Year of construction: 2001, x-travel 300 mm y-travel 250 mm z-travel 251 mm Control Fanuc 16iMB max. turning speeds 15.000 min/-1 tool taper HSK-A 32 number of tool places 12 Pos. 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 noted in the additional information. Subject to changes and errors in the technical data and information, as well Ljdpfx Aowth Sbed Ashf as subject to prior sale!

Condition: used, Year of construction: 2015, x-axis 1250 mm y-axis 840 mm z-axis 550 mm control Siemens 840D turning speed range - main spindle 12000 min/-1 drive capacity - main spindle 22,5 kW Torque max. 140 Nm Number of tools 24 St. max. tool length 320 mm spindle taper HSK 63 Number of working hours 56000 h spindle hours 17500 h weight of the machine ca. 9,7 t This machine can be viewed under power by appointment and is in our estimation in very good condition. Furnishing: Lodpfsx I Sh Aex Ad Aehf - IKZ - chip conveyor - Glass measuring rods in all axes - automatic door - Swivel axis with counter bearing, Fibro There are 4 identical machines available. The machines were used for light countersinking and drilling work. Changes and errors in the technical data and information, as well Subject to prior sale!

Condition: defective spare-parts repository (used), The machine is defective; the control system does not start up. Mechanically, it is in good condition. Ljdsy Auc Espfx Ad Ashf

Condition: good (used), Year of construction: 2014, Parts shown by hand not come. Ledpfxsyk E Dbs Ad Aehf Technical data shown on pictures.

Condition: excellent (used), Year of construction: 2010, operating hours: 1,350 h, Very little used machine, approx. 1,350 spindle hours! Control: Fanuc 31 i Travel X-axis: 300 mm Travel Y-axis: 250 mm Travel Z-axis: 250 mm Number of tool stations: 12 positions Tool holder: HSK 32 Ljdeyzaq Sopfx Ad Aohf Number of spindles: 1 Rapid traverse Z-axis: 60 m/min Rapid traverse X-axis: 40 m/min Rapid traverse Y-axis: 40 m/min Max. speed: 15,000 rpm Chip conveyor

Condition: as good as new (ex-display), Year of construction: 2025, functionality: fully functional, controller manufacturer: Siemens, controller model: 840Dsl, General Speed: 10,500 rpm Max. power: 23.3 kW Tool holder: SK 40 Travel X: 550 mm Travel Y: 400 mm Travel Z: 425 mm Tool changer: 20 stations Lodpfx Adjyimyuj Ashf

Condition: used, MAKE CHIRON MODEL MILL 800 5 axis 5 axis machininng center (milling/turning from bar) Under power in our warehouse in Gussago BS Italy Mimu Machine tools CNC Fanuc 18iMBS (5 simoultaneous axis 1*) X, Y, Z (mm) 800 – 500 - 550 Rapids (Highspeed) 60 m/min Swivelling head CNC controlled (B axis) +/- 100° Turning spindle Peiseler Lhsdpfx Adegmi Une Ajf Milling spindle 12.000 giri / 140 Nm (v nota 2) Tools 65 Tool type HSK-A 63 DIN 69893 Tool-change time 1,5 sec (v nota 3) Table 1400x500 Max table load 1200 kgs 90fjsieew Coolant through spindle 70 bar (see note 4) CNC controlled clamping/rotating unit for 6th face machining (v. nota 5) Pressurised linear encoders Swarf conveyor Renishaw-ready Y.O.M. 2006 Weight 7500 kgs Turning package Max dia 65mm RPM: 15 / 4500 Max 42,5 KW / 90 Nm. Hydraulic clamping 800 Nm. Bar loader ILS-RBK- 10012 65 Diameters min/max 5/65 mm L= 600-1200 mm Highspeed (2) 60m/min. Spindle ...

Condition: used, 5 axis: yes Milling and turning: yes 5 axis machininng center (milling/turning from bar) Under power in our warehouse MAKE CHIRON MODEL MILL 800 5 axis CNC Fanuc 18iMBS (5 simoultaneous axis 1*) X, Y, Z (mm) 800 – 500 - 550 Rapids (Highspeed) 60 m/min Swivelling head CNC controlled (B axis) +/- 100° Turning spindle Peiseler Milling spindle 12.000 giri / 140 Nm (v nota 2) Tools 65 Tool type HSK-A 63 DIN 69893 Tool-change time 1,5 sec (v nota 3) Table 1400x500 Max table load 1200 kgs Coolant through spindle 70 bar (see note 4) CNC controlled clamping/rotating unit for 6th face machining (v. nota 5) Pressurised linear encoders Swarf conveyor Renishaw-ready Y.O.M. 2006 Weight 7500 kgs Turning package Lsdpfxsgph Rns Ad Aohf Max dia 65mm RPM: 15 / 4500 Max 42,5 KW / 90 Nm. Hydraulic clamping 800 Nm. Bar loader ILS-RBK- 10012 65 Diameters min/max 5/65 mm L= 600-1200 mm Highspeed (2) 60m/min. Spindle 20-12.000 min.’ – 140 Nm.12.000 RPM 12,5 KW/Max 34kW Swivelling head (CNC controlled) ± 100° Low hours This machine can be inspected under power in our Warehouse Mimu Machine Tools (Italy)

Condition: used, Chiron FZ18W Magnum rotopallet 1999 CNC Siemens 840D X 630 Y 400 Z 425 tables (2) 850x450mm 20 tools ISO 40 / 18kW / 140 Nm 40m/min HAWE hydraulics automatic doors swarf conveyor 6 ton Ljdpfxehkkwbe Ad Ashf 3,6 x 2,25 x 2,85 machine can be inspected under power in our warehouse Mimu Machine Tools (Italy)

Condition: used, MAKE CHIRON MODEL MILL 800 5 axis 5 axis machininng center (milling/turning from bar) Under power in our warehouse in Gussago BS Italy Mimu Machine tools CNC Fanuc 18iMBS (5 simoultaneous axis 1*) X, Y, Z (mm) 800 – 500 - 550 Rapids (Highspeed) 60 m/min Swivelling head CNC controlled (B axis) +/- 100° Turning spindle Peiseler Milling spindle 12.000 giri / 140 Nm (v nota 2) Ledpfsgqg Sgex Ad Ajhf Tools 65 Tool type HSK-A 63 DIN 69893 Tool-change time 1,5 sec (v nota 3) Table 1400x500 Max table load 1200 kgs 90fjsieew Coolant through spindle 70 bar (see note 4) CNC controlled clamping/rotating unit for 6th face machining (v. nota 5) Pressurised linear encoders Swarf conveyor Renishaw-ready Y.O.M. 2006 Weight 7500 kgs Turning package Max dia 65mm RPM: 15 / 4500 Max 42,5 KW / 90 Nm. Hydraulic clamping 800 Nm. Bar loader ILS-RBK- 10012 65 Diameters min/max 5/65 mm L= 600-1200 mm Highspeed (2) 60m/min. Spindle ...

Condition: used, Vertical machining center CHIRON FZ08W 2 pallets 12 HSK32 tools Spindle 15000 rpm HSK-32 rotopallet (2 pallets) CNC Fanuc 21iM chip conveyor The machine is under power in our warehouse in Gussago BS. Mimu Machine Tools Gussago BS Italy CNC type: Fanuc 21iM 2 pallets: Yes Number of pallets: 2 Spindle speed RPM: 15000 Lhjdpelaga Eefx Ad Ajf

Condition: ready for operation (used), Year of construction: 2007, operating hours: 22,500 h, travel distance X-axis: 450 mm, travel distance Y-axis: 270 mm, travel distance Z-axis: 310 mm, controller manufacturer: SIEMENS, controller model: 840D, spindle speed (max.): 15,000 rpm, number of axes: 3, This 5-axis CHIRON FZ 08K S Magnum SK was manufactured in 2007. It features a Siemens 840D control unit, with impressive travels of 450 mm in the X-axis, 270 mm in the Y-axis, and 310 mm in the Z-axis. The machine includes a 40-position tool changer and a high-pressure coolant system. If you are looking to get high-quality machining capabilities, consider the CHIRON FZ 08K S Magnum SK vertical machining centre we have for sale. Contact us for further details. • Overhaul: Factory overhauled and technically updated by Chiron (CMS) in 2017 • Last Spindle Replacement: September 2025 • Last Maintenance: Major annual service (4,000 h) performed in October 2025 • NC Swivel Head Range: −20° / +115° • Rapid Feed X/Y/Z: 75 m/min • Acceleration X/Y/Z: 1g / 1.5g / 2g • Tool Changer: 40 positions, HSK-A40 • Chip-to-Chip Time: 2.6 s (vertical) • Rotary Table: AWU 160 with D105 mm positioning axis • Operating Hours: Approximately 22,500 h Additional equipment • Clamping: Hainbuch Spanntop D100 collet chuck • Bar Loader: IRCO SiMag 100.1-3000 for round and profile material • High Pressure Coolant: 70 bar with Vario valve • Coolant Filtration: Knoll VRF, 400-liter vacuum rotation filter • Chip Conveyor: Scraper belt, 1,050 mm discharge height • Measurement/Monitoring: Renishaw TS27R 3D touch probe; tool life monitoring; tool breakage control • Collision Monitoring: Brankamp Marposs CMS 100 • Guide Channel Sets: Breuning IRCO sets included (by arrangement) • Collets: Hainbuch collets included (by arrangement) Ljdpfx Adeypb Tpe Aehf • Tool Holders: Approximately 500 pieces HSK-A40 • Spare Parts: Included for this machine type • Operating Materials: Specific operating fluids/materials included

Condition: ready for operation (used), Year of construction: 2019, operating hours: 13,572 h, travel distance X-axis: 800 mm, travel distance Y-axis: 530 mm, travel distance Z-axis: 450 mm, controller manufacturer: FANUC, controller model: 31i-B5, spindle speed (max.): 12,000 rpm, spindle motor power: 22,000 W, tool weight: 8,000 g, number of axes: 5, This 5-axis CHIRON FZ18W was manufactured in 2019, featuring a FANUC 31i-B5 control system and continuous 5-axis control. It boasts a spindle speed of up to 12,000 rpm, a tool capacity of 70, and rapid traverse rates of 75 m/min. Ideal for complex machining tasks with its automatic pallet changer and dual rotary tables. If you are looking to get high-quality milling capabilities consider the CHIRON FZ18W machine we have for sale. Contact us for more information. • Number of axes: 5 (X, Y, Z + 2 rotary axes via pallet/rotary table) • Spindle: • AC spindle motor: 7.5 kW (100% duty), 22.0 kW (10% duty) • Max torque: 140 Nm • Taper: HSK-A63 (DIN 69893) • Drilling capacity: Ø 42 mm • Tapping capacity: M30 • Milling capacity: 500 cm³/min (steel E355) • Tool changer: • Type: Fully enclosed chain magazine • Capacity: 70 tools • Max tool Ø: 78 mm (160 mm with free adjacent positions) • Max tool length: 380 mm • Max magazine load: 240 kg • Tool change time: ~0.9 s • Chip-to-chip time: ~2.6 s • Feed rates & dynamics: • Rapid traverse (X/Y/Z): 75 m/min • Acceleration: 0.6 – 1.2 – 1.4 g • Drives: Direct digital drives with absolute measuring system • Machine functions/utilities: • Automatic washdown of work area and fixtures • Automatic centralized grease lubrication • Hydraulic unit: 200 bar • Compressed air treatment with filtration to 0.01 µm • Cooling unit for machine components • Measuring, monitoring, software: • FANUC 3D collision control • Tool monitoring and sister tool management • Electrical & interfaces: Ljdsyaz Emjpfx Ad Ashf • Ethernet RJ45, USB, PCMCIA • Remote diagnostics: CHIRON remoteLine • Data monitoring & OEE: CHIRON dataLine • Compliance: CE Additional equipment (robots, automation, peripherals) • Automation/palletizing: • Automatic pallet changer IWV 0°/180° (change time ~3.5 s) • Rotary table ATU 200, 2 units • Positioning accuracy/repeatability: ±5″ • Max clamping torque: 1,200 Nm • Max load per side (APC): 250 kg • Max weight difference between pallets: 0 kg • Coolant and chip management: • Through-spindle coolant (predisposition) • High-pressure coolant system up to 30 bar • Coolant filtration: Drum filter TPF 350 S (50 µm) • Chip conveyor: Hinged belt • Coolant tank: 230 L • Pump: 250 L/min @ 1.4 bar • Probing/tool control: • Renishaw RLP40Q probe (predisposition) • Laser tool breakage control (Single F1000)

Condition: ready for operation (used), Year of construction: 2004, travel distance X-axis: 6,000 mm, travel distance Y-axis: 630 mm, travel distance Z-axis: 550 mm, controller manufacturer: SIEMENS, controller model: n/a, number of axes: 4, This 3-axis CHIRON Mill 6000 SK was manufactured in 2004, featuring a high-speed motor spindle at 12,000 rpm and a travel range of X 6,000 mm, Y 630 mm, Z 550 mm. It includes a 5-axis milling package, 92 tool positions, and a Marposs collision monitoring system. Ideal for long part machining up to 6,000 mm and pendulum machining. If you are looking to get high-quality milling capabilities consider the CHIRON Mill 6000 SK machine we have for sale. Contact us for more information. Machine Benefits Technical Machine Benefits • 92 tool positions hsk-a63 (background magazine) • Long part machining up to a maximum of 6000 mm • Machining of the end face (5th side) horizontally with swivel head (right/left) • Pendulum machining via center partition, max. Workpiece length 1773 mm with sk machining on both end faces (tool length 120 mm) • 4 hydraulic double vices (fixed center jaw) per pendulum section, positioning, and clamping via linear system (hydraulic release, mechanical clamping) Extra Information Ljdpfxsx Nr Irj Ad Aehf Additional Equipment High-speed package with Motor Spindle: 12000 rpm, 140 Nm Production Package: Scraper belt conveyor, discharge height 1050 mm Internal coolant preparation KNOLL VRF250 vacuum rotary filter (suitable for steel, cast iron, aluminum, plastic, brass) High pressure 70 bar with HP pump and variable valve Flushing gun per pendulum field Emulsion mist extraction, 2 fans each 800 m²/h Rotating viewing window left and right (1400 mm from machine center) Automatic loading doors Center partition for pendulum machining 5-Axis Milling Package Air Blast Tool Life Monitoring Additional V24 RS232 in the control cabinet BDE/MDE interface (statuses: machine on, machine running, part counter) Marposs (Brankamp) CMS100 Collision Monitoring System 3D machine model for kinematic simulation in the CAM programming system 210 bar hydraulic power unit, 2 clamping circuits, separate system clamping pressure for each pendulum field, clamping pressure control KOHN linear clamping system 8 KOHN Multi 2000 MFS 125/680 HD hydraulic vices Two-part operator step across the entire operating width of 6000 mm With the 3 axes x, y, z and the swivel head, the software package 5-axis milling can be used to mill shapes, e.g. a curve. The software then synchronizes the axes.

Condition: ready for operation (used), Year of construction: 2012, operating hours: 29,801 h, travel distance X-axis: 729 mm, travel distance Y-axis: 401 mm, travel distance Z-axis: 361 mm, controller manufacturer: FANUC, controller model: Series 31i, spindle speed (max.): 12,000 rpm, number of axes: 4, This 4-axis CHIRON FZ 15 KWM HS vertical machining center was manufactured in 2012. If you are looking to get high-quality milling capabilities, consider the CHIRON FZ 15 KWM HS machine we have for sale. Contact us for more information. Machine Benefits Technical Machine Benefits • Availability: available from 1/7/25 • Operating voltage: 400 v • Control voltage: 230/23 v • Material processed in the machine: aluminum • Cone type : hsk-63 Extra Information Lhedpfx Ajx D Nmlod Asf Machine still under power

Condition: ready for operation (used), Year of construction: 2011, operating hours: 21,578 h, number of axes: 4, This 4-axis CHIRON DZ15KWM HS was manufactured in 2011. Ideal for precision vertical machining, this model offers robust construction and reliable performance. If you are looking to get high-quality milling capabilities, consider the CHIRON DZ15KWM HS machine we have for sale. Contact us for more information. Extra Information Lhodpfx Aox D Nmrod Ajf Machine still under power

Condition: ready for operation (used), Year of construction: 2012, travel distance X-axis: 550 mm, travel distance Y-axis: 320 mm, travel distance Z-axis: 360 mm, table load: 500 kg, spindle speed (max.): 12,000 rpm, tool weight: 5,000 g, number of axes: 3, This 3-axis CHIRON FZ 12 KW vertical machining center was manufactured in 2012. It features a high-speed spindle with a maximum speed of 12,000 rpm and a rapid traverse speed of up to 60 m/min on the Z-axis. The machine includes a 24-slot automatic tool changer and can handle a table load of up to 500 kg. Ideal for precision machining tasks. Contact us for more information about this machine. Machine Benefits Technical Machine Benefits • Controlled axes: 6 axes • Reach: 704 mm • Acceleration/deceleration: 0 to 12000 min-1 in 0. 6 seconds • Clamping surface: 820 x 440 mm² • Drilling capacity in st 60: Ø 16 mm • Tapping: m 16 • Milling capacity in st 60: 80 cm³/min • Acceleration: x & y axis 0. 7 g, z axis 1. 0 g Extra Information Movement Axis Movement Range and Speed: J1: 340°/360° (option) at 350°/s J2: 200° at 350°/s J3: 388° at 400°/s J4: 380° at 450°/s J5: 240° at 450°/s Lhodpfxox Nr I Ej Ad Aef J6: 720° at 720°/s Allowable Load Moment: J4 & J5: 11.9 Nm J6: 6.7 Nm Repeatability: +/- 0.02 mm Maximum Speed J1: 195°/s J2: 175°/s J3: 180°/s J4 & J5: 400°/s J6: 600°/s Allowable Load Moment J4 & J5: 7.7 Nm J6: 9.8 Nm Tools Automatic Tool Changer: Tool Pockets: 24 Tool Change Time: approx. 0.9 s Chip-to-Chip Time: approx. 2.4 s The workpieces are supplied via an automated feeding system and sequentially loaded into the Chiron machining centres by two Fanuc industrial robots. Once the machining processes are complete, they are removed again. The robots then transfer the components to a transfer system, which transports them to the downstream cleaning system. The integrated washing line ensures reliable cleaning of the components in accordance with the defined cleanliness specifications. After the washing process, two synchronously operating Fanuc robots take over the cleaned parts in the rear section of the system. Depending on the process specifications, these are either palletised automatically or further processed in a downstream step, for example by riveting. The entire system operates fully automatically.

Condition: ready for operation (used), Year of construction: 2006, travel distance X-axis: 300 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 250 mm, controller manufacturer: FANUC, controller model: 21i-M series, spindle speed (max.): 10,000 rpm, spindle motor power: 3,700 W, number of axes: 3, This 3-axis CHIRON FZ08W was manufactured in 2006. A vertical CNC machining center featuring a Fanuc 21i-M series control, it offers X, Y, Z travels of 300 mm, 250 mm, and 250 mm respectively. It includes a table size of 550 x 300 mm, a spindle speed of 10,000 rpm, and a 12-position tool magazine. Consider the opportunity to buy this CHIRON FZ08W vertical machining center. Contact us for more information. • Condition: Used • Status: Good Lsdpfx Asygl D Hod Ajhf • Table size: 550 x 300 mm • Permissible load: 200 kg • Tool magazine: 12 positions Additional equipment • Chip evacuator