Stanko 2 M 55 pirkti naudotą (110 807)

Būklė: paruoštas naudoti (naudotas), Gamybos metai: 1978, Drilling capacity Ø 50 mm, table size 1000x1640 mm, spindle taper MK-5, quill stroke 400 mm, quill diameter 80 mm, arm reach 1600 mm, max. installation height table-to-quill 1600 mm, 21 speeds 20-2000 rpm, gear transmission, motor 4 kW, dimensions 2700x1100x3430 mm, approx. 4800 kg, with coolant system, double cube 800x800x800 mm, hydraulic clamping. Ijdpfx Abed Sw N Ajvetg

Būklė: labai geros būklės (naudotas), 2 x 55 m³ aliumininiai silosai su ilga atramine briauna, ø 3.000 mm (miltelių silosas) Talpa: apie 55.000 ltr. Gamintojas: Zeppelin Pagaminimo metai: 2005 Kiekis: 2 vnt. Skersmuo: apie 3.000 mm Cilindro aukštis: apie 10.025 mm Bendras aukštis: apie 11.265 mm Svoris: apie 1.900 kg Birių medžiagų tankis: 0,6 kg/dm³ Itodpfxewg Dd Ho Abveg Medžiaga: AlMg3 Jungtys ir prisijungimai: Viršutinėje dalyje: 1 x stogo krašto turėklas (ø 3.000 x 1.250 mm) 2 x krano kilpos 1 x žmogaus anga DN 600 1 x flanšas DN 150 1 x flanšas DN 100 (užpildymo anga) 1 x flanšas DN 100 1 x flanšas DN 250 (su viršslėgio ir vakuuminiais vožtuvais) 1 x 1 1/2" sriegis (pilnumo jutiklis) 1 x 1 1/2" sriegis (rezervas) 1 x siloso filtras (Infrastaub gamyba) Korpuso dalyje: 1 x užpildymo linija 1 x praėjimo durys Vienas iš silosų turi dvigubus įlipimo laiptus su apsauginiu atlošu. Silosas baigiasi 60° kūgiu su DN 150 flanšu ir apžiūros sklende. Yra brėžinys Kita informacija pagal nuotraukas

Būklė: geras (naudotas), Gręžimo pajėgumas: Ø 50 mm Veleno tvirtinimas: MK5 Veleno apsukos: 18 - 2 000 aps./min. Veleno eiga: 400 mm Horizontali iškyša max: 1 250 mm Veleno atstumas iki grindų plokštės max: 1 600 mm Įranga: - Sriegimo įtaisas - Gręžimo stalas Ijdpfx Aey Ia Azsbvstg Staklių svoris: 4.500 kg Staklių matmenys IxPxA: 2 800 x 1 000 x 3 500 mm

Būklė: naudotas, Gamybos metai: 1969, Išsikišimas 1600 mm Lizdas MK 5 Itedpfx Aex H Txtjbvog Priedas: kubas

Būklė: paruoštas naudoti (naudotas), Gamybos metai: 1996, SASTA STANKO Engine Lathe, Model: SA562M, Year of manufacture: 1996 Swing diameter over bed: 500 mm Swing diameter over cross slide: 290 mm Centre distance: 1500 mm Spindle speeds: 16–2000 rpm Spindle bore: 55 mm Chuck diameter: 250 mm Forkardt, tool post: Multifix size C. Iedpfxevkuauj Abvstg Machine equipped with rapid traverse on X and Z axes. Machine is in good overall condition. For further data, please refer to the data sheets.

Būklė: naudotas, No. 3264 Complete Frame Sawmill Möhringer / Paul Used, still connected to power supply until 30/06/2026 Consisting of: - Round timber crosscut table with driven conical rollers Length measurement by Hecht with remote-controlled light barriers - 1 cross conveyor to the frame saw 7000 x 5500 mm (L x W) Cam chains as new - 1 cross conveyor 3800 x 4000 mm (L x W) - 1 roller conveyor in front of the frame saw, length 12,400 mm, roller width 1,400 mm With hydraulic lowering and lifting for modeled timber, transverse discharge with 2 control flaps - Quick-release carriage EWD with auxiliary carriage - 1 auxiliary conveyor for log feeding in front of the frame saw - Root reducer Möhringer - Frame saw Möhringer B 75-55 Multi-BV, year 1994 Passage 700 mm, stroke 550 mm, saw bands hydraulically adjustable, conveyor belt, log turning device with adjustable laser, round timber measurement by Hecht, clamp Jansen, hooks, 60 saw bands, setting gauge - Driven splitting wedge with chain bed Möhringer 230-292, year 1994 With pre-cutting, light barriers and laser for adjustment - 1 roller conveyor 4000 x 1400 mm (L x W), with corrugated rollers, transverse discharge with air cylinders - 1 S-conveyor with buffer section 3500 x 4000 mm (L x W), Albert pusher made of square tube Itedpfjyzr Tfox Abveg - 1 S-conveyor 3000 x 5500 mm (L x W), motor with adjustable slip coupling, function monitoring, pusher made of angle iron - 1 under-table crosscut saw Paul 15 AO, year 1992 - 1 double edger Paul KME 2 / 750 R, year 1988 With sliver separator, right bushing motorized adjustable, continuous crosscut, length sorting, preselection programs Österle - 1 conveyor belt 7400 x 400 mm (L x W) - 1 conveyor belt 4000 x 400 mm (L x W) - 1 conveyor belt 3000 x 500 mm (L x W) - 1 trough conveyor approx. 6500 x 500 mm (L x W), inclined, for sawdust - 1 trough conveyor HOLTEC approx. 6500 x 500 mm (L x W), inclined, for wood chips - 1 trough conveyor HOLTEC horizontal, with left and right run as a distributor over the boxes - Drum chipper HAAS, passage width 600 mm, passage height 150 mm, with shaker chute - Frame saw sharpener OPL - Setting machine VOLLMER GSA, year 1996 - Frame saw sharpener VOLLMER (requires minor repair, push cylinder bent) Sale on behalf of customer, ex location near 34125 Kassel, without dismantling, without transport and assembly Dismantling, loading and transport by us available as an option Description and price subject to change To avoid possible misunderstandings, an on-site inspection by appointment is possible and recommended Sale only in as-is condition Technical data, condition description, year of manufacture and scope of supply according to manufacturer’s brochure and/or previous owner, without warranty Subject to prior sale For used machines, all warranties are excluded, applies: "bought as inspected" Photos and videos are for reference only and do not represent the actual scope of delivery Payment terms: Prices plus statutory VAT, payment before collection or shipping Delivery terms: ex-location

Būklė: paruoštas naudoti (naudotas), * Prekės ženklas: RN Maschinenbau * Paviršius: ilgis 5500 mm, plotis 2100 mm - 2 deniai * Viršutinio denio sijojimo anga: [] 18 mm. * Apatinio denio sijojimo anga: [] 8 mm. * Pavara: 30 kW elektrinis variklis * Įskaičiuota: spyruoklės. Iedpfxjywmpms Abvjtg

Būklė: paruoštas naudoti (naudotas), * Prekės ženklas: Krupp Itedpfoywmc Tox Abvsg * Paviršius: 5500 x 2100 mm – 2 aukštai * Viršutinis aukštas: sieto angos [] 35 mm * Apatinis aukštas: sieto angos [] 16 x 3 mm * Variklis: 22 kW * Komplekte: spyruoklės ir spyruoklių kronšteinai * Sandėlyje: 2 vnt.

Būklė: labai geros būklės (naudotas), rida: 20 274 km, galia: 169 kW (229,78 AG), pirmoji registracija: 12/1999, kuro tipas: dyzelinas, ašių konfigūracija: 4x2, kuras: dyzelinas, spalva: raudona, vairuotojo kabina: miegamoji kabina, pavaros tipas: mechaninis, emisijos klasė: euro2, sėdimų vietų skaičius: 7, bendras ilgis: 8 700 mm, krovimo vietos ilgis: 8 700 mm, Gamybos metai: 1999,

Būklė: geras (naudotas), Linear actuator, linear gearbox, lifting gearbox, spindle drive, linear axis, toothed belt axis - Manufacturer: Festo, linear actuator type DGE-25-1500-ZR-LK-RH-KF-GK - Stroke length: 1500 mm - Servo motor: Festo type EMMS-AS-55-M-LS-TM Itjdpfx Ajud Urrsbvsg - Planetary gearbox: Neugart PLE 80 - Quantity: 5 units available - Price: per unit - Dimensions: 1880/70/H340 mm - Weight: 12.7 kg/unit

Būklė: labai geros būklės (naudotas), Control: Heidenhain TNC 426 Dimensions Required installation space (WxDxH): 1.92 x 1.85 x 2.4 m Weight: approx. 2,400 kg Working Area Travel, longitudinal | X-axis: 500 mm Travel, cross | Y-axis: 255 mm Quill stroke (controlled) | Z-axis: 147 mm Quill stroke (manual) | Z-axis: 160 mm Machine head travel | W-axis: 500 mm Feeds / Rapid Traverses Speeds: Rapid traverse - X and Y axes: 1–11,000 mm/min - Z axis: 1–6,000 mm/min - W axis: 1–3,600 mm/min Feed forces - X and Y axes: 6,500 N - Z axis: 8,000 N Rapid traverses - X and Y axes: 11 mm/min - Z axis: 6 mm/min Measuring System Direct measurement via linear scale: X / Y / Z axes Resolution Indirect measuring system via rotary encoder: Z axis Resolution on X, Y, Z, and W axes: 0.001 mm Accuracy Positioning tolerance P (axes) X / Y: 0.005 mm Positioning scatter Ps (axes) X / Y: 0.003 mm Z / W: 0.005 mm Table Clamping surface (LxW): 885 x 320 mm Work area - T-slots: - Number: 5 - Width: 12 H8 mm - Spacing: 50 mm Permissible table load: 250 kg Table height above floor: 1,040 mm Clearance spindle nose to table (min.–max.): 0–120–620 mm Itsdpotp S R Hsfx Abvjg Horizontal reach: 300 mm Working Spindle Tool quick-change system: SF 32 Tool change: hydraulic via push buttons - Repeatability: 0.002 mm - Changeover time (manual): approx. 5 s Spindle speed range (stepless): 50–9,000 rpm Drive power: 7.6 kW Max. torque: 65 Nm Machining Performance Drilling capacity: ø 25 mm Tapping: M20 Enclosure Semi-enclosure with sliding doors Coolant / Lubrication Coolant: - External tank, capacity: 100 l - Pump flow rate: 75 l/min Central lubrication system: Vogel

Būklė: paruoštas naudoti (naudotas), Heidenhain AE LC 281 ID 721 856-02 skaitymo galvutė SN 55 349 541, laido ilgis 3 m, naudota, gera būklė, 100% veikianti, komplektacija pagal nuotraukas. Ijdpsx Dwrcjfx Abvetg

Būklė: labai geros būklės (naudotas), Precision CNC Tool Presetting and Measuring Device from renowned brand KELCH – model Trabant 271-2/M. Equipped with a length and diameter measuring system featuring optics and a KELCH Pico LCD A23 monitor, along with Heidenhain ND1202T Tool-Chek electronics. Very good condition, complete and fully functional unit. Technical data and configuration: • Manufacturer: KELCH GmbH + Co. Werkzeugmaschinenfabrik, Germany • Model: Trabant 271-2/M • Year of manufacture: 2000 • Measuring unit: KELCH Pico LCD (Version A23) • Readout system: Heidenhain ND1202T Tool-Chek • Power supply: 230V / 50–60Hz / 1000 VA • Optics with measuring camera and LCD screen • Rotary table with holders and dual-axis adjustment system • Measuring range (X/Z axes): up to approx. 400 mm • Axis control via KELCH control panel (joystick and function key panel) • Digital readout, menu available in German and English • Comes with original documentation and complete set of connections Condition: • Used, fully operational • Exceptionally clean unit from a German toolmaking facility Itjdpexn Ax Aefx Abvog • All axes move smoothly, display responds properly • Ready for immediate use Functional description: The KELCH Trabant 271-2/M is designed for fast and precise setting of cutting tools prior to installation in a CNC machine. The optical system with Pico LCD screen allows visual measurement of tool length, diameter, and geometry. Ideal for inspection and presetting of milling cutters, turning tools, drills, and special tools.

Būklė: labai geros būklės (naudotas), Parduodamas žinomo gamintojo Grundfos pramoninis siurblys. Modelis SPK 4-8 – vertikalus daugiapakopis siurblys, skirtas švariems skysčiams, aušinimo skysčiui, pramoninėms instaliacijoms ir CNC staklėms. Ijdpfx Ajywpahebvstg Techniniai duomenys: Gamintojas: Grundfos Modelis: SPK 4-8 A-A-A Galia: 0,55 kW Apsisukimai: 2850 aps./min Našumas: apie 3 m³/val. Pakėlimo aukštis: iki 28 m Skysčio temperatūra: maks. 90°C Gamybos šalis: Danija Būklė: Naudotas, veikiantis. Matomi naudojimo požymiai (nutrynimai, nedideli korozijos ženklai – žr. nuotraukas). Ant korpuso prie jungties matomas įtrūkimas – veikimui įtakos neturi (patikrinti pirkėjui).

Būklė: beveik kaip naujas (naudotas), 2,500 m² mezzanine warehouse platform Schäfer R3000, 2-3 levels Used equipment, excellent condition, as new – see photos Iodpfx Abofiqhlevstg Manufacturer: SCHÄFER R3000 CAD planning and installation 2-3 storeys Price on request! Partial sale possible Negotiable price: upon request! Item is in stock and immediately available Transport and installation available upon request. Inspection possible at any time by appointment. Further information available on request. Constantly over 5,000 linear meters of pallet racking from various manufacturers in stock. (Technical data, details, and prices subject to change and prior sale! See our General Terms and Conditions. All prices exclude VAT, ex-stock.) Purchase / Sale We are constantly looking for and offering a wide range of products from various fields: - broom-clean business clearances - business liquidations - Fast – flexible – efficient! We also clear or dispose of on behalf of insolvency administrators. Please send us a brief description and we will get back to you immediately. To visit our website, please click our logo!

Būklė: beveik kaip naujas (naudotas), 2,700 m² Schäfer R3000 Mezzanine Warehouse Platform, 2-storey Used equipment, excellent condition, like new - see photos Manufacturer: SCHÄFER R3000 CAD planning and installation Price on request! Itjdpjfiqhfsfx Abveg Partial sale possible Negotiation basis: Price on request! Stock item, immediately available Transport and installation available upon request. Inspection possible at any time by appointment. Further information available on request. Over 5,000 running metres of pallet racking constantly in stock from various manufacturers. (Subject to changes and errors in technical data, specifications and prices as well as prior sale! See our General Terms and Conditions. All prices excl. VAT, ex stock.) Purchase / Sale: We are continuously looking for and offering a wide range of items from various sectors Professionally cleared operational premises Company liquidations Fast - flexible - efficient! We also clear out or dispose for insolvency administrators. Send us a few keywords and we will get back to you immediately. To visit our website, please click on our logo!

Būklė: beveik kaip naujas (naudotas), 4,000 m² Schäfer R3000 Mezzanine, 2-Storey Used item, top condition, like new, see photos Manufacturer: SCHÄFER R3000 CAD planning and assembly available Price on request! Partial sale possible Negotiable price: upon request! Itodpfx Asfiqhdjbveg Stock item, available immediately Transport and assembly possible upon request. Inspection possible anytime by appointment. Further information on request. Constantly over 5,000 linear meters of pallet racking from various manufacturers in stock. (Subject to alterations and errors in technical data, specifications and prices. Sale subject to prior sale! See our terms and conditions. All prices ex works, excluding VAT.) Purchase / Sale: We are constantly looking for or offering numerous items from various sectors • Sweep-clean factory clearances • Liquidations • Fast - flexible - efficient! We also clear and/or dispose of inventory for insolvency administrators. Send us a few keywords about your requirements, and we will get back to you promptly. To visit our website, please click on our logo!

Būklė: labai geros būklės (naudotas), Approx. 3,000 m² Two-Storey Steel Mezzanine Platform Used equipment in good condition, see pictures Manufacturer: STOW Length: approx. 58.5 m Width: approx. 54.6 m Height to lower edge: 3.4 m Height to upper edge: 3.7 m Load capacity: 500 kg/m² Constructed with C-profiles and Sigma profiles, bolted with nuts and bolts Longitudinal grid distances adjustable Floor structure: 38 mm high-density particle board, tongue and groove Underside white, top side grey coated Price negotiable: Offer on request! Partial sale possible! Dismantled and loaded Item in stock. Transport costs available on request. Inspection possible anytime by appointment. Further information available on request. Constantly over 5,000 linear meters of pallet racking from various manufacturers in stock. (Specifications, data and prices are subject to change and prior sale! See our T&Cs, all prices excl. VAT ex works.) Purchase / Sale We are continuously seeking and offering numerous items from various sectors: - Swept clean business clearances - Company liquidations Itsdpfx Abod S S E Usveg - Fast, flexible, effective! We also clear and/or dispose for insolvency administrators. Send us a short message, and we will contact you immediately. To visit our page, please click on our logo!

Būklė: beveik kaip naujas (naudotas), 2,000 m² Schäfer R3000 Storage Platform, 2 Levels Used item, excellent condition, like new – see photos. Manufacturer: SCHÄFER R3000 CAD design and assembly available. Price on request! Partial sale possible. Negotiable price: on request! Item is in stock and available for immediate delivery. Transport and installation available upon request. Inspection possible at any time by appointment. Further information on request. Constantly over 5,000 linear meters of pallet racking in stock from various manufacturers. (Subject to changes and errors in technical data, specifications, and prices. Subject to prior sale! Please refer to our General Terms and Conditions. All prices exclude VAT, ex stock.) Itjdpfx Abjfiqhmjveg Purchase / Sale: We are constantly looking for and offering numerous items from various areas. - Broom-clean business liquidations - Business closures - Fast – flexible – efficient! - We also clear out or dispose for insolvency administrators. Write to us with a few keywords and we will get back to you promptly. To visit our site, please click on our logo!

Būklė: naujas, Parduodamas aukštos kokybės elektrinis variklis, žinomo gamintojo WEG, Premium IE3 serija. Variklis naujas, nenaudotas, sandėlio likutis, labai geros būklės. Puikiai tinka siurbliams, ventiliatoriams, pramoninėms mašinoms bei dirbtuvių panaudojimams. ⚙️ Techniniai duomenys Gamintojas: WEG Modelis: AL90S L 02 Galia: 2,2 kW Apsisukimai: 2855 rpm Maitinimas: 230/400 V Dažnis: 50 Hz Srovė: apie 7,8/4,5 A Našumo klasė: IE3 Apsaugos laipsnis: IP55 Darbo režimas: S1 Flanšinė konstrukcija: B5 Veleno skersmuo: apie 24 mm Svoris: apie 22 kg Ijdpfx Aeyvamnebvjtg Pagaminimo metai: 2018

Būklė: naujas, Gamybos metai: 2026, Funkcionalumas: visiškai funkcionalus, mašinos/transporto priemonės numeris: EAN0729389556525, bendras ilgis: 17 000 mm, lentynos aukštis: 3 500 mm, lentynų eilučių skaičius: 2, keliamoji galia: 9 000 kg, rėmo aukštis: 3 500 mm, rėmo plotis: 1 100 mm, apkrova vienai santvarų porai (maks.): 3 000 kg, lentyna ilgis: 8 500 mm, atrama ilgis: 2 700 mm, 2 eilių padėklų stelažai (2 x M35112711-2)\nKiekvieno ilgis 8,5 m, aukštis 3,5 m, gylis 1,1 m,\npo 3 sekcijas, sekcijos plotis – 2,7 m,\nkiekviena turi 2 lentynų lygius, lentynos apkrova – 3000 kg.\n\n- 8 rėmai (RM3511 – RAL5019)\n- 16 pado plokštelių, tarpinės medžiagos, tvirtinimo komplektas\n- 32 grindų inkarai (ZZBA1210)\n- 24 vienetinės sijos (T27114 – RAL2008)\n- 0 atramų/pataikymo apsaugų (ZRS40901)\n- 2 apkrovos ženklai (BSMcP)\n\nRėmai yra sujungti varžtais, nepristatomi surinkti.\n\nTransportavimas / pristatymas:\n- Per ne daugiau kaip 20 darbo dienų nuo apmokėjimo gavimo\n- Pristatoma iki statybos/montavimo vietos\n- Iškrovimas iš sunkvežimio atliekamas pirkėjo nuosavu kėlimo įrenginiu\n- Pristatymas visoje Vokietijos Federacinės Respublikos teritorijoje, išskyrus salas! Pristatymas į ES valstybes pagal individualų susitarimą. Iedoy Hkxdjpfx Abvjtg

Būklė: naudotas, Gamybos metai: 1993, x eiga 500 mm y eiga 400 mm z eiga 420 mm Stalo dydis 800 x 400 mm Padavimo diapazonas 1–3000 mm/min Greita eiga 0,083–5 m/min Iodjyy A Dxspfx Abvjtg Įrankio tvirtinimas ISO 40 Sūkių diapazonas 20–4000 aps./min Pagrindinė pavara DC 5 kW CNC valdymas 355 HH Bendras energijos poreikis 10,9 kW Staklių svoris apie 2300 kg Reikalinga erdvė apie 2,5 x 2,5 x 2,0 m CNC įrankių frezavimo staklės su Heidenhain TNC 355 valdymu ir purslų apsaugos kabina.

Būklė: naujas, Gamybos metai: 2026, Funkcionalumas: visiškai funkcionalus, mašinos/transporto priemonės numeris: EAN0729389556525, keliamoji galia: 9 000 kg, bendras ilgis: 17 000 mm, apkrova vienai santvarų porai (maks.): 3 000 kg, lentynų eilučių skaičius: 2, rėmo aukštis: 3 500 mm, rėmo plotis: 1 100 mm, lentynos aukštis: 3 500 mm, lentyna ilgis: 8 500 mm, atrama ilgis: 2 700 mm, 2 rows of pallet racks (4 x M35112711-3) Each 8.5 m long, 3.5 m high, 1.1 m deep Each with 3 bays, 2.7 m wide Each with 3 beam levels, compartment load 3,000 kg Ijdjv Ungcspfx Abvetg Scope of delivery: - 8 frames (RM3511 - RAL5019) - 16 base plates, shims, fastening material - 32 floor anchors (ZZBA1210) - 36 individual beams (T27114 - RAL2008) - 4 impact protection guards / collision guards (ZRS40901) - 2 load capacity signs (BSMcP) Frames are bolted, not pre-assembled Freight / Delivery: - max. 20 working days after receipt of payment - free delivery to the construction / installation site - Unloading from the truck is to be carried out by the buyer with their own lifting equipment - Delivery throughout the entire territory of the Federal Republic of Germany, except islands! Deliveries to EU countries by individual agreement.

Būklė: reikia remonto (naudotas), STANKO 2 A 554 The machine is in fully functional condition except for the clamping mechanism of the boom lifting device and is currently still in operation. The clamping unit needs to be assembled and readjusted; all required parts are present. For safety reasons, the boom is secured with a tensioning strap, and the clamping mechanism for the lift is currently engaged. Technical specifications: - Drilling capacity: 60 mm - Arm reach: 1600 mm Itsdpfx Abotpu Tqoveg - Spindle taper: MT 5 - Spindle stroke: 390 mm - Spindle speeds: 20 steps, 20 – 2000 rpm - Right and left rotation - Feed: 12 steps, 0.056 – 2.5 mm/rev - Drive: 400 V / 12.8 kW - Boom and drilling unit clamping: electromechanical - Distance from machined machine bed to spindle nose: - min. approx. 900 mm - max. approx. 1600 mm - Usable machine bed with 4 T-slots: 950 x 1700 mm - Coolant system - Cube table - Required space: approx. W 2600 x H 3000 x D 1000 mm - Weight: approx. 4500 kg

Būklė: geras (naudotas), Techniniai duomenys apie padėklinių stelažų sijas: Stelažų sistema: SLP Pristatymo komplektacijoje yra: 01x Padėklinio stelažo sija, naudota Medžiagos spalva: pilka INP profilis: 100 x 50 mm Kabliukų skaičius: 3 HK (kabliai) Grynasis ilgis: 2 000 mm 02x Fiksavimo kaištis, naudotas Tipas: pilnai cinkuoti Skirti išilginėms sijoms apsaugoti nuo netyčinio iškėlimo Jūsų kontaktiniai asmenys mūsų įmonėje: Ponas: Andre Evering Ponas: Mario Klöver Itsdpfx Abjxyvznevog Ponas: Falk Deutsch Bendra informacija apie prekę: Ši prekė siūloma tik atsiėmimui. Jei pageidautumėte transportavimo ar išsiuntimo paslaugos, tai būtų papildomai apmokestinta pagal pristatymo vietą arba kiekį. Dėl tokių paslaugų maloniai prašome kreiptis į mus atskirai.