Wmf Presto F nakup rabljenega (33.502)

Stanje: zelo dobro (rabljeno), WMF Presto F Fully Automatic Coffee Machine 2.2KW / 120 Cups Per Day Nlsdpfx Ajp U Tyfogxsa Filtered coffee is indispensable at breakfast and remains popular throughout the day. The WMF Presto F is, therefore, the ideal machine for businesses that occasionally need to serve larger quantities or single cups of coffee. Touchscreen Display The simplest menu navigation – operation is via fingertip on the display. All steps are clearly shown step by step on the display. Brilliant Keypad Layout Very easy labeling of the keypad, and you can replace the labels yourself. Height-Adjustable Spout You can fill containers ranging from 70-190 mm in height. Technical Specifications: WMF Presto F Model Series 1400 Rated Power: 2.0 – 2.2 kW Daily Coffee Output: 120 cups Hot Water Output per Hour: 10 liters Bean Hopper / Chocolate Container Capacity: approx. 500 g each (1000 g optional) 1/N/PE - 50/60 Hz / 220-230 V Cup Height: 70 to 190 mm (up to 180 mm with integrated chocolate) Weight: approx. 30 kg Fixed Water Connection You can find more new and used items in our shop! International shipping costs on request!

Stanje: zelo dobro (rabljeno), 352 RABLJEN aparat za kavo WMF Presto. Naprava je delujoča. ZUNANJE DIMENZIJE (v cm): - višina 65, - širina 25, - dolžina 30. Nledpeywl Eysfx Agxoa Napravo je mogoče ogledati v našem skladišču (36-068 Bachórz, Poljska). Na voljo plačljive možnosti: prevoz naprave. Navedena cena je neto. GOVORIMO ANGLEŠKO, NEMŠKO, FRANCOŠKO, RUSKO, UKRAJINSKO.

Stanje: zelo dobro (rabljeno), številka stroja/vozila: PA-399, Print format: A3 Nedpsh Eh U Rofx Agxsla Paper size: approx. 31 x 45 cm

Stanje: skoraj kot novo (rabljeno), Leto izdelave: 2017, S&F Vibrating Screen Machine | Screening Machine Type ASM-200 used (inspected) with inspected bearings (flange bearings) and inspected universal joints Manufacturer: S&F GmbH Type: ASM-200 Year of manufacture: 2017 Screening capacity: approx. 20 t/h (for wood pellets, depending on material) Fractions: 2 Screen area: 2.0 m² per mesh size Screen decks: 1 piece Mesh aperture size: - 1st screen deck: punched perforated plate, D = 5 mm Drive power: 2.2 kW, 3 x 400 V, 50 Hz L x W x H: 3,200 x 1,800 x 1,450 mm Design: ECO Line Machine weight: approx. 1,300 kg Machine color: RAL 3000 Flame Red including: Modular Silo Type M-300 / 45°, used L x W = 3,000 x 3,000 mm Total height: approx. 4,400 mm Outlet height: approx. 1,750 mm Volume: approx. 4.06 or 9.35 m³ Max. bulk density: approx. 900 kg/m³ Article No.: 406.4345 including extension feet L = 1,100 mm including hopper extension and slide gate Suitable for screening the following bulk materials, among others: - Wood chips - Sawdust and wood shavings - Biomass - Wood pellets - Charcoal Nsdpjy Aa Ugofx Agxela - Waste wood - Bark vibrating screen | wood chip screen | vibrating screening machine | flat screen | oscillating screen | drum screen | screening machine for wood chips | CHP screening machine

Stanje: delavnici obnovljeno (rabljeno), Leto izdelave: 2016, Funkcionalnost: popolnoma funkcionalen, Presto HG20R Stiskalni kontejner za vozila z rolo kiper dvigalom Na voljo 3 kosi 20 m³ uporabne prostornine Odlagalna vrata zgoraj obešena Dvonivojska kavlji na obeh straneh Deljen pokrov nad polnilno odprtino, odpiranje levo/desno Nlodpex Svx Tefx Agxea Priprava za uporabo z rampo Stroji so obnovljeni, preverjeni, servisirani in prebarvani v želeni standardni RAL barvi. Z veseljem pripravimo ponudbo z dostavo. Slike so referenčne fotografije strojev enakega tipa, ki smo jih izdelali.

Stanje: rabljeno, Leto izdelave: 2019, Overview This keg handling package consists of an M+F Keg Technik Monomat + RMT keg washer, a keg filling unit, and a large quantity of stainless steel kegs in various sizes, complemented by tap faucets. The system is suitable for small to medium-sized breweries, allowing for the cleaning and filling of kegs for beer distribution. The washer was manufactured in 2019 and offers a compact and efficient solution for keg processing. Technical Data Njdpfxey D Erts Agxjla Manufacturer of keg washer: M+F Keg Technik Model of keg washer: Monomat + RMT Year of manufacture: 2019 Performance: approx. 12 kegs/hour Keg filler: included (manufacturer unknown) System type: semi-automatic keg washing and filling system Equipment - Keg Technik Monomat + RMT keg washer - Keg filling unit (stand-alone device) - 195 x 30-liter stainless steel kegs (Type S/A) - 39 x 50-liter stainless steel kegs (Type S) - 22 x 20-liter stainless steel kegs (Type A) - 22 x 10-liter stainless steel kegs (Type S) - 10 x beer taps (various manufacturers)

Stanje: pripravljen za uporabo (rabljen), Leto izdelave: 2002, obratovalne ure: 4.486 h, Funkcionalnost: popolnoma funkcionalen, potovalna razdalja osi X: 3.000 mm, pomik osi Y: 2.360 mm, pomik po osi Z: 1.500 mm, največja hitrost vrtenja: 18.000 obr/min, model krmilnika: Fidia C20 mit Bedienteil HPX, La máquina se encuentra en funcionamiento completo y en muy buenas condiciones. Está desmontada, almacenada y disponible de inmediato. DETALLES TÉCNICOS Recorrido del eje X: 3.000 mm Recorrido del eje Y: 2.360 mm Recorrido del eje Z: 1.500 mm Ángulo de rotación eje A: 105° Ángulo de rotación eje C: 300° Superficie de sujeción: 5.000 mm x 2.000 mm Carga admisible sobre mesa: 15.000 kg/m² Distancia entre ranuras en T: 18H12 / 250 mm Velocidad de avance X, Y, Z ejes: 20 m/min Aceleración de ejes X, Y, Z: 1,5 m/s² Máx. velocidad del husillo: 18.000 rpm Par de giro: 90 Nm Portaherramientas: HSK 63A DETALLES DE LA MÁQUINA Potencia del husillo: 28 kW Potencia conectada: 40 kW Fusible principal: 80 A Horas de trabajo del husillo: 4.486 h Horas totales de la máquina: 146.161 h Dimensiones y peso Espacio requerido por la máquina con periféricos (L x A x H): 7.300 x 5.600 x 5.600 mm Peso de la máquina: 16.500 kg EQUIPAMIENTO Nljdpfxjywgyrs Agxoa Carcasa de 3 lados, sin conductos de extracción

Leto izdelave: 1994, stanje: rabljeno, Ponujamo to rabljeno mostno žago F. Zambon Rover 35, leto izdelave 1994. Proizvajalec: F. Zambon Model: Rover 35 Letnik izdelave: 1994 Stanje: rabljeno ID kategorije: 431 Tip: Mostna žaga Če imate kakršnakoli vprašanja ali potrebujete dodatne informacije, nam pošljite sporočilo ali nas pokličite. Nsdpfsyuuudjx Agxela

Stanje: rabljeno, KEG-naprava, proizvajalec M+F, tip: Micromat M 2/2, z eno postajo za notranje čiščenje in eno polnilno postajo, s posodo za čistilno sredstvo. Nledpfxjyzhvij Agxea

Stanje: dober (rabljeno), Leto izdelave: 2019, obratovalne ure: 1.022 h, Funkcionalnost: popolnoma funkcionalen, Baler Presto CC 20 M, Year of Manufacture 2019 Technical Data: Manufacturer: Presto Model: CC 20 M Year of manufacture: 2019 Operating hours: 1,022 Pressing force: 20 t Cycle time: 24 s Nsdpfxjyz R S Hs Agxela Drive power: 7.5 kW Feed opening: 1,030 x 750 mm Feed volume: 0.53 m³ Tying: 3-fold, manual Throughput rate at bulk density of 35 kg/m³ – 1.6 t 60 kg/m³ – 2.3 t 100 kg/m³ – 2.8 t Bale size: 700 x 750 mm Bale weight: up to 300 kg Dimensions: 3,300 x 1,235 x 1,860 mm (LxWxH) Machine weight: approx. 2,500 kg Materials: Paper, cardboard, film Remarks: The machine is in good condition. It has been inspected and tested at our premises in 28816 Stuhr. You can find a video on our website or YouTube channel. Please note: All technical data is based on the manufacturer's information. We do not assume liability for the stated information or any possible errors. Offers are non-binding, subject to prior sale, and may be revoked at any time. Inspections can be arranged by appointment. Sale is ex-works, without warranty or guarantee.

Stanje: dober (rabljeno), Leto izdelave: 2017, obratovalne ure: 1.640 h, Funkcionalnost: popolnoma funkcionalen, Bale Press Presto CC 40 M, Year of Manufacture 2017 Technical Data: Manufacturer: Presto Model: CC 40 M Year of Manufacture: 2017 Pressing Force: 40 t Cycle Time: 34 s Nlsdpfx Aoyz R Hqjgxea Drive Power: 15 kW Filling Opening: 1080 x 1100 mm Filling Volume: 0.85 m³ Strapping: 4-fold, polyester strap, manual Throughput at loose bulk density of 35 kg/m³ - 1.8 t/h 60 kg/m³ - 2.5 t/h 100 kg/m³ - 3.1 t/h Bale Dimensions: 750 x 1100 mm Bale Weight: 400 kg Dimensions: 3650 x 1590 x 2010 mm (LxWxH) Machine Weight: approx. 3800 kg Materials: Paper, Cardboard, Film The press is in good condition. It has been inspected and tested by us. A video can be found on our website or YouTube channel. The operating manual and CE declaration are available. Note: Channel discharge is fully automatic and adjustable. Please note: All technical data refer to the manufacturer's information. We assume no liability for the stated details or any potential errors. Offer is non-binding, subject to prior sale and can be revoked at any time. Viewings possible by appointment. Sale is ex works against prepayment, without warranty or guarantee.

Stanje: dober (rabljeno), Leto izdelave: 2014, obratovalne ure: 7.145 h, Funkcionalnost: popolnoma funkcionalen, Channel Baler Presto HPK 50 HS, Year of Manufacture 2014 Manufacturer: Presto Model: HPK 50 HS Year: 2014 Drive Power: 30 kW Pressing Force: 50 t Operating Hours: 7,145 Feed Opening: 1600 x 650 mm (LxW) Channel Cross-section: 700 x 950 mm Max. Filling Volume: 1.06 m³ Cycle Time: 20 s Nledpjyz R Eyofx Agxja Binding: 4-fold Throughput Capacity at 35 kg/m³: 5.5 t/h 60 kg/m³: 8.8 t/h 100 kg/m³: 12.7 t/h Bale Weight: up to 500 kg Machine Dimensions: 8,420 x 1,900 x 2,400 mm (LxWxH) Machine Weight: approx. 10,500 kg Materials: Paper, Cardboard, Film, PET Bottles Note: All knives, counter-knives, and sliding plastics have been replaced. The baler is in good condition and has been inspected and tested. A video is available on our website or YouTube channel. Operating manual and CE declaration are included. Please note: All technical data are based on the manufacturer’s information. We assume no liability for the accuracy of the details or potential errors. This offer is subject to change, prior sale reserved, and can be revoked at any time. Viewing is possible by appointment. Sale is made against advance payment, ex works, without warranty or guarantee.

Stanje: dober (rabljeno), Leto izdelave: 2015, obratovalne ure: 1.932 h, Funkcionalnost: popolnoma funkcionalen, Baler Presto CC 50 M, semi-automatic, year of manufacture 2015, with lift-and-tip device Technical Data: Manufacturer: Presto Model: CC 50 M Year of manufacture: 2015 Nsdpeyz R Etjfx Agxsla Operating hours: 1,932 Pressing force: 50 t Cycle time: 52 s Motor power: 7.5 kW Filling opening: 1030 x 1100 mm Filling volume: 0.85 m³ Tying: triple, wire, manual Throughput at bulk density of 35 kg/m³ – 1.3 t 60 kg/m³ – 1.7 t 100 kg/m³ – 2.2 t Bale dimensions: 750 x 1100 mm Bale weight: 300 kg Dimensions: 4705 x 1680 x 2540 mm (LxWxH) Machine weight: approx. 4,000 kg Materials: Paper, cardboard, film The operating manual is available in German. Note: The machine is in good condition. It has been inspected and tested at our premises in 28816 Stuhr. You can find the video on our website or on our YouTube channel. Please note: All technical data is based on manufacturer’s information. We assume no liability for the specifications given or for any possible errors. The offer is subject to change, prior sale reserved, and can be revoked at any time. Inspections can be arranged by appointment. Sale is ex works, payment in advance, without warranty or guarantee.

Stanje: dober (rabljeno), Leto izdelave: 2006, Funkcionalnost: popolnoma funkcionalen, Balinirni stroj Presto CC 30 V, leto izdelave 2006 Tehnični podatki: Proizvajalec: Presto Tip: CC 30 V Leto izdelave: 2006 Pritisk: 30 t Ciklični čas: 34 s Nsdpfx Ageyz Il Dexjla Pogonska moč: 11 kW Polnilna odprtina: 1080 x 950 mm Volumen polnjenja: 0,69 m³ Vezava: 4-kratna, avtomatska Zmogljivost pri nasipni teži: 35 kg/m³ - 2,0 t 60 kg/m³ - 3,2 t 100 kg/m³ - 4,8 t Dimenzije bal: 700 x 950 mm Teža bale: do 350 kg Dimenzije stroja: 3650 x 1770 x 2150 mm (DxŠxV) Teža stroja: cca 3900 kg Materiali: papir, karton, folija Opomba: Vsi tehnični podatki so povzeti po podatkih proizvajalca. Za morebitne napake ali netočnosti v podatkih ne prevzemamo odgovornosti. Ponudba je nezavezujoča, vmesna prodaja in preklic sta pridržana. Ogled je možen po predhodnem dogovoru. Prodaja poteka na podlagi predplačila, EXW, brez jamstva in garancije.

Stanje: dober (rabljeno), max. working width: 2000 mm for sheets up to: 1 mm upper beam opening width: 70 mm adjustment of bending beam: 10 mm required space: 2300 x 600 x 1050 mm Nljdpfxo Ixyno Agxsa

Stanje: generalkompletno obnovljen (rabljeno), Leto izdelave: 2012, Funkcionalnost: popolnoma funkcionalen, potovalna razdalja osi X: 7.000 mm, pomik osi Y: 3.500 mm, pomik po osi Z: 2.000 mm, hitrost pomika os X: 50 m/min, hitrost podajanja osi Y: 50 m/min, hitrost podajanja os Z: 30 m/min, največja hitrost vretena: 18.000 obr/min, hitro pomikanje X-os: 50 m/min, hitri pomik os Y: 50 m/min, hitri pomik na osi Z: 30 m/min, vrtilni moment: 38 Nm, skupna masa: 65.000 kg, Initial commissioning: 2012 Control: Heidenhain iTNC 530 X-axis: approx. 7,000 mm Y-axis: approx. 3,500 mm Z-axis: approx. 2,000 mm A-axis: ± 100° C-axis: ± 360° Clamping table: 6,000 x 3,000 x 160 mm (below floor) with T-slots 18H12 / 250mm 2-axis milling head VH 12 Spindle power: 24 kW Spindle speed: max. 18,000 rpm Torque: max. 38 Nm Tool holder: HSK 63A Linear axis drives Feed rate X, Y, and Z axes: up to 50 m/min / 30 m/min Axis acceleration X, Y, and Z axes: up to 2.5 m/s² Connection data Voltage: 400 V Frequency: 50 Hz Main fuse: 200 A Power demand: 85 kVA Dimensions, weights Nsdpoyrdc Esfx Agxola Space required (machine only, without peripherals): approx. 10,000 x 6,650 x 5,900 mm Total weight: approx. 65,000 kg Additional equipment - Opening doors on both sides - 10-station tool changer Optional at extra cost: - Wireless measuring probe - Heidenhain remote diagnostics Machine condition Fully functional, very good condition. Can be inspected under power. !!! The machine was completely mechanically overhauled in 2022 !!!

Stanje: novo, ➡️ BUSCH R5 VACUUM PUMP ➡️ RA 0040 F 503 ➡️ NEW ➡️ Core Specifications Technology: Rotary vane principle (oil-lubricated) Nominal pumping speed: * 50 Hz: 40 m³/h 60 Hz: 48 m³/h Ultimate pressure: 0.1 hPa (mbar) Motor power: 1.1 kW to 1.4 kW (depending on mains frequency and motor type) Voltage: Usually 3-phase (e.g., 400V at 50Hz) Physical Details Weight: approx. 42–45 kg Dimensions (L × W × H): approx. 625 x 284 x 263 mm Connections: G 1¼" (gas inlet and outlet) Oil capacity: 1.0 litre (standard oil: Busch VM 100) Sound pressure level: 63–66 dB(A) (relatively quiet for industrial use) Special Features of the "F" Model (RA 0040 F) The F series stands out due to its optimized design: Highly efficient vanes: Usually made from fiber-reinforced epoxy resin for long service life. Nledpfswdkl Eox Agxsa Maintenance-friendly: Oil changes and replacement of the oil mist separator element can be performed without special tools. Cooling system: Air cooling via integrated motor fan. Safety features: A non-return valve at the suction flange prevents backflow of oil into the process when at a standstill. Fields of Application This model is a true "workhorse" and is commonly found in: Vacuum packaging machines (chamber machines). Centralized vacuum systems. Pneumatic conveying systems. Degassing processes.

Stanje: rabljeno, Leto izdelave: 2015, Funkcionalnost: popolnoma funkcionalen, številka stroja/vozila: M32961, leto zadnje generalne obnove: 2025, Samostiskalni kontejner (odstranjevalec) letnik 2015 Lastna teža: 2.500 kg SN: 31047, barva: modra Nledpfx Ageyymraoxoa Zadnji servis: 05/2025, zadnji UVV: 05/2025 Bil je v aktivni uporabi do januarja 2026. Na stiskalnici je bila nadgradnja z vgrajeno tehtalno tehniko, ki je bila odstranjena. Vnos v stiskalnico je preko stranskih vrat. Ohišje je možno kadarkoli odstraniti z odvijanjem vijakov. Nato je stiskalnica v običajnem stanju. Lokacija: DE - 58730 Fröndenberg

Stanje: rabljeno, Funkcionalnost: popolnoma funkcionalen, vrsta prenosa: samodejen, vrsta goriva: dizel, obratovalna teža: 7.500 kg, prva registracija: 10/1977, Leto izdelave: 1977, Oprema: hidravlika, Technically in good condition Nlodpfx Agot S Idrjxja

Stanje: novo, Na prodaj industrijska dvovijačna (dvopolžasta) črpalka priznanega proizvajalca Leistritz Nürnberg. Nsdpfsyga U Hjx Agxjla Črpalka je nova / skladiščena, nikoli uporabljena – v zelo dobrem stanju, kot je prikazano na slikah. Identifikacijski podatki (iz tablice): • Proizvajalec: Leistritz Nürnberg • Tip / serija: LN • Model: 48/80-F-C • Serijska številka: 6812.129 • Konstrukcija: dvopolžasta črpalka (twin screw / twin spindle) Lastnosti in prednosti: • dva sodelujoča polža (brez stika kovina–kovina) • zelo nizke pulzacije pretoka • delovanje pri različnih viskoznostih medija • miren tek in dolga življenjska doba • možnost delovanja v obe smeri • rešitev za neprekinjeno industrijsko obratovanje Uporaba: • olja in mazalna sredstva • industrijske in tehnološke instalacije • hidravlika, energetska industrija • hladilni / mazalni sistemi • procesne aplikacije Stanje: • novo • brez poškodb • priključki zaščiteni s pokrovčki • Cena velja za 1 kos.

Stanje: zelo dobro (rabljeno), 353 RABLJEN kavni avtomat WMF Bistro. Naprave so delujoče. ZUNANJE MERE (v cm): - višina 60, - širina 38, - dolžina 25. Nsdpfxsywl Izs Agxola Naprave si lahko ogledate v našem skladišču (36-068 Bachórz, Poljska). Možnosti plačila: prevoz naprave. Navedena cena je neto. GOVORIMO ANGLEŠKO, NEMŠKO, FRANCOZSKO, RUSKO, UKRAJINSKO.

Stanje: dober (rabljeno), Leto izdelave: 2012, Preddrobljenec ni del ponudbe (zgornji del). Ponujen je le spodnji del. Papirna balirka / balirni stroj PRESTO CC 40 V Proizvajalec: PRESTO GmbH & Co. KG Tip stroja: CC 40 V Serijska številka: 28074 Leto izdelave: 2012 Nsdpfx Asyrt T Tsgxjla Lastna teža: 4200 kg Maks. obratovalni tlak: 260 bar Zaščitni razred: IP55 Nazivni tok: 30 A Nazivna napetost: 400 V, 50 Hz Nazivna moč: 15 kW Električni priključek: 35 A gG Tip stroja: horizontalna balirka za papir in karton.

Stanje: dober (rabljeno), Leto izdelave: 2011, Funkcionalnost: popolnoma funkcionalen, Available from June 2026 Baling Press Presto HPK 50 BS, year of manufacture 2011, with wirbulator and optional Horstmann chain belt conveyor Manufacturer: Presto Model: HPK 50 BS Year of manufacture: 2011 Drive: 30 kW Pressing force: 50 t Feed opening: 1600 x 1050 mm (LxW) Channel cross-section: 700 x 1100 mm Max. feed volume: 1.23 m³ Cycle time: 19 s Tying: 4-fold Throughput rate at 35 kg/m³: 6 t/h 60 kg/m³: 9.6 t/h 100 kg/m³: 13.9 t/h Bale weight: up to 500 kg Machine dimensions: 8500 x 1700 x 2400 mm (LxWxH) Machine weight: approx. 12,000 kg Chain Belt Conveyor Data Manufacturer: Horstmann Model: PK 1100/11 Year of manufacture: 2011 Belt width: 1100 mm Speed: approx. 0.2 m/s (max. 0.3 m/s) Infeed length: approx. 3000 mm Rising section: approx. 5000 mm Gooseneck: approx. 1000 mm The press is still in operation and can be inspected under working conditions. It will be available from the beginning of June 2026. Please note: All technical data is based on manufacturer’s specifications. We accept no liability for the accuracy of the provided information or for any errors. Nedpfxeyub Drj Agxola This offer is subject to change, prior sale reserved, and may be withdrawn at any time. Inspections can be arranged by appointment. Sale is ex works against prepayment, without warranty or guarantee.

Stanje: zelo dobro (rabljeno), Leto izdelave: 2018, Funkcionalnost: popolnoma funkcionalen, Pulsotronic M-Pulse 2 Detektor kovin s transporterjem Znamka: Pulsotronic-Anlagentechnik GmbH Tip: M-Pulse 2 BD-HD 350x150 LPW MFT Leto proizvodnje: 2018 Serijska številka: 90007273 Nlsdpfjyr S Nmex Agxja Napetost: 115/230 VAC Frekvenca: 50-60 Hz Dimenzije detekcijske odprtine: 350 x 120 mm Širina traku: 240 mm Skupne dimenzije: 3500 x 900 x 1300 mm Detektor kovin Pulsotronic M-Pulse 2 je napreden sistem za nadzor kakovosti iz leta 2018, ključen za zagotavljanje varnosti hrane v proizvodnih procesih. Naprava je zasnovana za natančno zaznavanje kovinskih nečistoč v izdelkih, ki se prevažajo na integriranem tračnem transporterju. Zaradi odprtine dimenzij 350 x 120 mm in robustne konstrukcije iz nerjavečega jekla je sistem idealen za živilsko industrijo, zagotavlja najvišjo občutljivost zaznavanja in enostavno vzdrževanje higiene.

Stanje: rabljeno, Leto izdelave: 2013, Pregled: Ta polnilna naprava za KeyKeg, MICROMAT M1/1‑F KeyKeg, je bila izdelana leta 2013 pri nemškem podjetju m+f KEG Technik. Naprava je namenjena polnjenju KeyKeg sodčkov in je bila uporabljena v pivovarni. Prodajalec je ne potrebuje več, ogled pa je možen kadarkoli po dogovoru. Tehnični podatki: Formati: KeyKeg Uporaba: polnjenje KEG Delovni tlak: 5,5 bar Napajanje: 230/400 VAC Krmilna napetost: 24 VDC Frekvenca: 50 Hz Nlsdsyq Ia Eopfx Agxoa