Sicmi Pbm 100 M nakup rabljenega (82.760)

Stanje: novo, Stanje: novo Dobavni rok: cca 4 mesece od naročila Država izvora: Italija Cena: 123.000 € Leasing obrok: 2.324,7 € Tlačna sila: 170 t Hod: 500 mm Miza: 1200x700 mm Vgradna višina: 600 mm Cgjdjynm I Aopfx Ahxst Hitri pomik: 110 mm/s Delovna hitrost: 7 mm/s Povratna hitrost: 70 mm/s Motor: 19 kW Dolžina: 2.700 mm Širina: 1.600 mm Višina: 2.650 mm 4-točkovno vodilo bata Miza in bat s T-utori Dvorocno upravljanje Nastavitev hoda Nastavitev pritiska

Stanje: novo, Stanje: novo Dobavni rok: cca 4 mesece od naročila Država porekla: Italija Cena: 78.000 € Leasing obrok: 1.474,2 € Tlačna sila: 85 t Hod: 500 mm Miza: 900x600 mm Vgradna višina: 600 mm Hitri pomik: 105 mm/s Delovna hitrost: 7 mm/s Codpoynm Ivsfx Ahxjgt Povratna hitrost: 58 mm/s Motor: 7,5 kW Dolžina: 2.250 mm Širina: 1.150 mm Višina: 2.400 mm 4-kratno vodilo batnice Miza in batnica s T-utori Dvoročno upravljanje Nastavitev hoda Nastavitev pritiska

Stanje: novo, Stanje: novo Dobavni rok: cca 4 mesece po naročilu Država izvora: Italija Cena: 71.300 € Leasing obrok: 1.347,57 € Tlačna sila: 60 ton Hod: 500 mm Miza: 800x500 mm Vgradna višina: 600 mm Hitri pomik: 120 mm/s Delovna hitrost: 8 mm/s Hitrost vračanja: 58 mm/s Motor: 5,5 kW Dolžina: 1100 mm Cjdpfxoynm Ipj Ahxegt Širina: 1100 mm Višina: 2350 mm 4-točkovno vodilo bata Miza in bat z T-utori Dvoručni upravljalnik Nastavljiv hod Nastavljiv pritisk

Stanje: novo, Stanje: novo Dobavni rok: cca 4 mesece od naročila Država izvora: Italija Cena: 65.000 € Leasing obrok: 1.228,5 € Tlačna sila: 35 t Hod: 500 mm Cedjynm Iispfx Ahxegt Miza: 800x500 mm Vgradna višina: 600 mm Hitro premikanje: 125 mm/s Delovna hitrost: 9 mm/s Povratna hitrost: 68 mm/s Motor: 4 kW Dolžina: 1100 mm Širina: 1100 mm Višina: 2300 mm Štirikratno vodenje bata Miza in bat z T-utorji Dvo-ročno upravljanje Nastavitev hoda Nastavitev tlaka

Stanje: novo, Novo stanje Vrijeme isporuke cca. 4 mjeseca od narudžbe Zemlja porijekla Italija Cijena 138.000 € Leasing rata 2.608,2 € Pritisna sila 170 t Hod 500 mm Klizač 870x500 mm Stol 1000x600 mm Ugradbena visina 600 mm Izbacivanje 300 mm Brzi hod 110 mm/s Smanjena brzina 42 mm/s Radna brzina 7 mm/s Brzina povratka 70 mm/s Motor 19 kW Dužina 1500 mm Širina 1950 mm Visina 2650 mm 4 vodilice klizača T-utor na stolu Rexroth hidraulična jedinica Nadzirani elektromagnetni ventili Izmjenjivač topline zrak/ulje Tlačni sklopni prekidač Dvo-ručna upravljačka konzola Podešavanje hoda krajnjim prekidačem Siemens CPU Bočne fiksne zaštitne rešetke Oprema prema CE direktivi (IV ograda) Cedjynmx Uopfx Ahxegt OPCIJE (cijene na upit): Izvlačni jastuk Prizmatične vodilice Svjetlosna barijera CNC Siemens upravljanje s ekranom na dodir Hidraulična pumpa s promjenjivom brzinom Proporcionalni ventili Bočne pomične zaštitne rešetke s krajnjim prekidačem

Stanje: novo, Stanje novo Rok isporuke oko 4 mjeseca od narudžbe Zemlja porijekla Italija Cijena 89.700 € Leasing rata 1.695,33 € Pritisna snaga 85 t Hod 500 mm Klinasta glava 700x400 mm Stol 800x600 mm Ugradbena visina 600 mm Izbacivač 300 mm Brzina brzog hoda 105 mm/s Smanjena brzina 41 mm/s Radna brzina 7 mm/s Brzina povratka 58 mm/s Motor 7,5 kW Dužina 1200 mm Širina 1600 mm Visina 2500 mm 4 vođenja klina T-utori na stolu Rexroth hidraulična jedinica Nadzirani elektromagnetni ventili Izmjenjivač topline zrak/ulje Tlačni prekidač Dvo-ručna upravljačka konzola Podešavanje hoda pomoću krajnjih prekidača Cgjdpfx Ahoynmxzsxjt Siemens CPU Bočne fiksne zaštitne rešetke Opremljeno prema CE propisima (IV kućište) OPCIJE (cijene na upit): Jastuk za izvlačenje Prizma vođenje Svjetlosna zavjesa CNC Siemens upravljanje s ekranom na dodir Hidraulična pumpa s promjenjivom brzinom Proporcionalni ventili Bočne pomične zaštitne rešetke s krajnjim prekidačem

Stanje: novo, Zustand neu Lieferzeit ca. 4 Monate ab Auftragserteilung Ursprungsland Italien Preis 79.500 € Leasingrate 1.502,55 € Presskraft 60 t Hub 500 mm Stößel 700 x 350 mm Tisch 700 x 500 mm Einbauhöhe 600 mm Ausladung 250 mm Eilgang 120 mm/s Reduzierte Geschwindigkeit 38 mm/s Arbeitsgeschwindigkeit 8 mm/s Rückzugsgeschwindigkeit 58 mm/s Motor 5,5 kW Länge 1.100 mm Breite 1.500 mm Höhe 2.350 mm 4 Stößelführungen T-Nuten im Tisch Rexroth Hydraulikeinheit Überwachte Elektroventile Luft/Öl-Wärmetauscher Codpsynmxuefx Ahxsgt Druckschalter 2-Handbedienpult Hubeinstellung mittels Endschalter Siemens CPU Seitliche fixe Schutzgitter Ausgerüstet nach CE Vorschriften (Schutzart IV) OPTIONEN (Preise auf Anfrage): Ziehkissen Prismenführung Lichtschranke CNC-Steuerung Siemens mit Touchscreen Hydraulikpumpe mit variabler Geschwindigkeit Proportionalventile Seitliche Schutzgitter, verschiebbar mit Endschalter

Stanje: novo, Condition: New Delivery time: approx. 4 months from order Country of origin: Italy Price: €80,000 Cgjdpfx Asynmv Hshxet Leasing rate: €1,512 Pressing force: 200 tons Stroke: 500 mm Table: 2,000 x 1,550 mm Installation height: 800 mm Rapid traverse: 20 mm/s Working speed: 2 mm/s Length: 2,400 mm Width: 2,000 mm Height: 2,600 mm Weight: 4,800 kg Cylinder: fixed or horizontally movable Clear stand width: 1,550 mm Horizontally movable cylinder: 1,000 mm Hydraulically movable frame: 1,300 mm Horizontally movable cylinder Hydraulically movable frame Operation via hand lever and control panel Equipment conforms to CE regulations Operating manual in GERMAN and ENGLISH OPTIONS: - Worktable welded to the base frame with surface borings - Control console on swivel arm (buttons for press movement, solenoid valves, Siemens CPU) - Wireless control console (buttons for press movement, solenoid valves, Siemens CPU) - Siemens controller with touchscreen - Lifting cylinders in the table (6, 8 or 10 pcs.) - Anti-rotation device for piston - 2 speeds for frame and cylinder movement - Oil cooler and decompression valve

Stanje: novo, Condition: New Delivery time: approx. 4 months from order Cgsdpfxsynmvye Ahxot Country of origin: Italy Price: €92,000 Leasing rate: €1,738.80 Pressing force: 200 t Stroke: 500 mm Table size: 2,500 x 2,050 mm Installation height: 800 mm Rapid traverse: 20 mm/s Working speed: 2 mm/s Length: 2,950 mm Width: 2,500 mm Height: 2,600 mm Weight: 6,500 kg Cylinder: fixed or horizontally movable Clear column width: 2,050 mm Horizontally movable cylinder: 1,450 mm Hydraulically movable frame: 1,600 mm Horizontally movable cylinder Hydraulically movable frame Operation via hand lever and control panel Equipment according to CE regulations Operating manual in GERMAN and ENGLISH OPTIONS: - Worktable welded to substructure, with surface bore holes - Control panel on swivel arm (push buttons for press movement, solenoid valves, Siemens CPU) - Wireless remote control panel (push buttons for press movement, solenoid valves, Siemens CPU) - Siemens control with touchscreen - Lifting cylinders integrated in table (6, 8 or 10 units) - Anti-rotation device for the piston - Two speeds for frame and cylinder travel - Oil cooler and decompression valve

Stanje: novo, Condition: new Delivery time: approx. 4 months from order Country of origin: Italy Price: €107,000 Leasing rate: €2,022.30 Pressing force: 200 t Stroke: 500 mm Table: 3,000 x 2,550 mm Installation height: 800 mm Rapid traverse: 20 mm/s Working speed: 2 mm/s Length: 3,550 mm Width: 3,000 mm Height: 2,600 mm Weight: 8,500 kg Cylinder: fixed or horizontally movable Clear column width: 2,550 mm Horizontally movable cylinder: 1,900 mm Hydraulically movable frame: 2,000 mm Horizontally movable cylinder Hydraulically movable frame Operation via manual lever as well as control panel Equipment in accordance with CE regulations Operating manual in GERMAN and ENGLISH OPTIONS: Worktable welded to the base frame, with holes on the surface Control panel on swinging arm (push buttons for press movement, solenoid valves, Siemens CPU) Wireless control panel (push buttons for press movement, solenoid valves, Siemens CPU) Siemens touch screen control system Lifting cylinders in the table (6, 8, or 10 pcs) Twist protection for the ram 2 speeds for frame and cylinder movement Oil cooler and decompression valve Cgodpfx Asynmvgjhxst

Stanje: novo, Condition: new Delivery time: approx. 4 months from order placement Country of origin: Italy Price: €135,000 Leasing rate: €2,551.5 Pressing force: 300 t Stroke: 500 mm Table dimensions: 3,000 x 2,050 mm Installation height: 700 mm Rapid traverse: 20 mm/s Working speed: 2 mm/s Length: 3,100 mm Width: 3,000 mm Height: 2,600 mm Weight: 11,500 kg Cylinder: fixed or horizontally traversable Clear gap between uprights: 2,050 mm Horizontally traversable cylinder travel: 1,300 mm Hydraulically movable uprights: 2,000 mm Horizontally traversable cylinder Hydraulically movable upright Operation via hand lever and control panel Equipment in accordance with CE regulations, operating instructions in GERMAN and ENGLISH OPTIONS: - Worktable welded to the base frame, with surface drilling - Operator panel on swivel arm (push buttons for press movement, solenoid valves, Siemens CPU) Cgodpfx Ajynmvaehxet - Wireless operator panel (push buttons for press movement, solenoid valves, Siemens CPU) - Siemens control system with touchscreen - Lifting cylinders in the table (6, 8, or 10 pcs.) - Anti-twist device for the piston - 2 speeds for movement of uprights and cylinder - Oil cooler and decompression valve

Stanje: novo, Condition: New Delivery time: approx. 4 months from order Country of origin: Italy Price: €160,000 Leasing rate: €3,024 Pressing force: 300 tons Stroke: 500 mm Table size: 4,000 x 2,550 mm Installation height: 700 mm Rapid traverse: 20 mm/s Working speed: 2 mm/s Length: 3,550 mm Width: 4,000 mm Height: 2,600 mm Weight: 15,000 kg Cylinder: fixed or horizontally adjustable Clear column width: 2,550 mm Horizontally adjustable cylinder stroke: 1,800 mm Hydraulically movable frame: 2,800 mm Cgedpeynmu Nefx Ahxet Horizontally adjustable cylinder Hydraulically movable frame Operation via manual lever and control panel Equipment according to CE regulations Operating manual in GERMAN and ENGLISH OPTIONS: Worktable welded to base frame, with surface boreholes Control console on swivel arm (push buttons for press movement, solenoid valves, Siemens CPU) Wireless control console (push buttons for press movement, solenoid valves, Siemens CPU) Siemens control with touchscreen Lifting cylinders in table (6, 8, or 10 units) Anti-rotation device for the ram 2 speeds for frame and cylinder movement Oil cooler and decompression valve

Stanje: novo, Condition: New Delivery time: approx. 4 months from order placement Country of origin: Italy Price: €218,000 Pressing force: 400 t Stroke: 500 mm Table: 4,000 x 2,550 mm Installation height: 700 mm Rapid traverse: 20 mm/s Working speed: 2 mm/s Codeynmu Ajpfx Ahxjgt Length: 4,000 mm Width: 4,000 mm Height: 2,600 mm Weight: 20,500 kg Cylinder: fixed or horizontally traversable Clear gap between uprights: 2,550 mm Horizontally traversable cylinder: 1,800 mm Hydraulically movable frame: 2,900 mm Horizontally traversable cylinder Hydraulically movable frame Operation via hand lever and control panel Equipment according to CE regulations Operating manual in GERMAN and ENGLISH OPTIONS: Work table welded to the base frame, with surface holes Operator panel on swivel arm (buttons for press movement, solenoid valves, Siemens CPU) Wireless operator panel (buttons for press movement, solenoid valves, Siemens CPU) Siemens control system with touchscreen Lifting cylinders in the table (6, 8 or 10 pcs.) Anti-twist device for the ram 2 speeds for frame and cylinder movement Oil cooler and decompression valve

Stanje: novo, Condition: new Delivery time: approx. 4 months from order placement Country of origin: Italy Price: €258,000 Pressing force: 400 tons Cgsdpfeynmuvex Ahxet Stroke: 500 mm Table: 5,000 x 3,050 mm Installation height: 700 mm Rapid traverse: 20 mm/s Working speed: 2 mm/s Length: 4,500 mm Width: 5,000 mm Height: 2,600 mm Weight: 24,000 kg Cylinder: fixed or horizontally movable Clear column width: 3,050 mm Horizontally movable cylinder: 2,200 mm Hydraulically movable frame: 3,600 mm Horizontally movable cylinder Hydraulically movable frame Operation via hand lever as well as control panel Equipment according to CE regulations; operating manual in GERMAN and ENGLISH OPTIONS: - Work table welded to the base frame, with surface drillings - Control panel on swivel arm (push buttons for press movement, solenoid valves, Siemens CPU) - Wireless control panel (push buttons for press movement, solenoid valves, Siemens CPU) - Siemens control unit with touchscreen - Lifting cylinders integrated into the table (6, 8, or 10 units) - Anti-twist device for the piston - 2 speeds for frame and cylinder movement - Oil cooler and decompression valve

Stanje: novo, Condition: New Cgodpfjynmupox Ahxst Delivery time: approx. 6-8 weeks from order Country of origin: Italy Pressing force: 500 t Stroke: 500 mm Table size: 5,000 x 2,550 mm Installation height: 700 mm Rapid traverse: 18 mm/s Working speed: 3 mm/s Length: 5,000 mm Width: 5,000 mm Height: 3,000 mm Weight: 32,000 kg Cylinder: fixed or horizontally movable Clear frame width: 2,550 mm Horizontally movable cylinder: 1,700 mm Hydraulically movable frame: 3,600 mm Horizontally movable cylinder Hydraulically movable frame Operation via manual lever and control panel Equipment in accordance with CE regulations Operating manual in GERMAN and ENGLISH OPTIONS: Work table welded to base frame, with surface drill holes Control panel on swivel arm (push-buttons for press movement, solenoid valves, Siemens CPU) Wireless control panel (push-buttons for press movement, solenoid valves, Siemens CPU) Siemens control with touchscreen Lifting cylinders in table (6, 8 or 10 units) Anti-rotation device for the piston 2 speeds for frame movement and cylinder Oil cooler and decompression valve

Stanje: novo, Condition: new Delivery time: approx. 6–8 weeks from order Country of origin: Italy Cedsynmucspfx Ahxsgt Pressing force: 600 t Stroke: 500 mm Table: 6,000 x 2,550 mm Installation height: 700 mm Rapid traverse: 18 mm/s Working speed: 3 mm/s Length: 5,000 mm Width: 6,000 mm Height: 3,000 mm Weight: 43,000 kg Cylinder: fixed or horizontally movable Clear column spacing: 2,550 mm Horizontally movable cylinder: 2,200 mm Hydraulically movable frame: 4,600 mm Operation via hand lever and control panel Equipment in accordance with CE regulations Operating manual in GERMAN and ENGLISH OPTIONS: - Work table welded to machine base, with holes on the surface - Control desk on pivoting arm (pushbuttons for press movement, solenoid valves, Siemens CPU) - Wireless control panel (pushbuttons for press movement, solenoid valves, Siemens CPU) - Siemens touchscreen control - Lifting cylinders in table (6, 8 or 10 pcs.) - Anti-rotation device for piston - 2 speeds for frame and cylinder movement - Oil cooler and decompression valve

Stanje: novo, Condition: New Delivery time: approx. 4 months from order Country of origin: Italy Price: €75,000 Leasing rate: €1,417.5 Pressing force: 150 tons Stroke: 500 mm Table size: 2,500 x 2,050 mm Installation height: 800 mm Rapid traverse: 20 mm/s Working speed: 3 mm/s Length: 2,900 mm Width: 2,500 mm Height: 2,500 mm Weight: 5,200 kg Cylinder: fixed or horizontally movable Clear frame width: 2,050 mm Horizontally movable cylinder: 1,400 mm Hydraulically movable frame: 1,600 mm Horizontally movable cylinder Hydraulically movable frame Operation via manual lever as well as control panel Equipment in accordance with CE regulations Operating manual in GERMAN and ENGLISH OPTIONS: - Work table welded to the base frame, with holes on the surface - Control panel on a swing arm (pushbuttons for press movement, solenoid valves, Siemens CPU) - Wireless control unit (pushbuttons for press movement, solenoid valves, Siemens CPU) Csdjynmp Tspfx Ahxogt - Siemens control system with touchscreen - Lifting cylinders integrated in the table (6, 8 or 10 pcs.) - Anti-rotation device for the ram - 2 speeds for frame and cylinder movement - Oil cooler and decompression valve

Stanje: dober (rabljeno), Tehnični podatki za prečko paletnega regala: Regalni sistem: META Thyssen V obsegu dobave je vključeno: 01x prečka paletnega regala, rabljena Barva materiala: rumena Tip prečke: HN 100|20 Škatlasti profil: 100 x 50 mm Agrafa: 3 HK (kavlji) Svetla razdalja: 3.600 mm 02x varnostni zatiči, rabljeni Izvedba: v celoti pocinkani Csdoy Akh Repfx Ahxegt Za zavarovanje vzdolžnih nosilcev proti nenamernemu dvigu Vaši kontakti v našem podjetju: G.: Andre Evering G.: Mario Klöver G.: Falk Deutsch Splošne informacije o artiklu: Ta artikel je na voljo samo za osebni prevzem. Za dodatni prevoz ali pošiljanje tega artikla nastanejo dodatni stroški, ki jih lahko individualno preverite glede na kraj dostave oziroma obseg pri nas.

Stanje: dober (rabljeno), Kolbus ECK 100 Avtomatski rezalnik vogalov Codpfxeywdpdo Ahxsgt Izdelano v Nemčiji, Kolbus GmbH & Co. KG. Zelo dobro ohranjeno. Profesionalna naprava za industrijsko obrezovanje vogalov za trde platnice. Leto izdelave: 2009. Robustna konstrukcija zagotavlja natančno delovanje. Zamenljiva rezila. Nastavljivi robovi. Priložen en komplet rezil. Poganja ga stisnjen zrak.

Stanje: dober (rabljeno), • Tip – FMF 100 • Dvostranski vrtalni stroj • Min. premer: 3 mm Codouqma Aopfx Ahxjgt • Maks. premer: 300 mm • Hitrost vrtenja: 110 – 4600 vrt/min • Spodnji sveder z avtomatskim pomikom, zgornji sveder ročno voden

Stanje: zelo dobro (rabljeno), Prodajam profesionalni rezkalni držalo znamke ORION – vrhunska nemška kakovost. • Tip SK40 Ø6-100 • Standard DIN 69871 AD – centralno hlajenje • Puša za Ø6 mm • Dolžina 100 mm • V kompletu orodje (rezkalo / sveder) • Zelo dobro ohranjeno, popolnoma delujoče. Držala ORION so zanesljiva izbira za CNC obdelovalne centre in rezkalne stroje s stožcem SK40. CENA ZA 1 KOS. Cjdsxcgxvjpfx Ahxogt

Stanje: zelo dobro (rabljeno), Profesionalni digitalni mikrometer priznane znamke Mahr – model Micromar 40 EWR(i) – namenjen izjemno natančnim meritvam z nat natančnostjo do 0,001 mm. Naprava v izvedbi IP65, odporna na prah in vodo, idealna za uporabo v metrologiji, kontroli kakovosti in industrijskih delavnicah. . Merilno območje: 100 – 125 mm . Natančnost: 0,001 mm . Digitalni prikaz z velikim, preglednim LCD zaslonom . Zaščitna stopnja: IP65 – odpornost na prah in škropljenje . Funkciji „ABS“ in „Hold“ – hitro zaustavljanje merjenja in funkcija ničljenja . Visoka togost ohišja, ergonomski oprijem . V kompletu originalna škatla, certifikat, navodila za uporabo ter 100 mm merilni vzorec . Stanje: praktično novo / uporabljeno samo za testiranje Codpfxoxl Rgis Ahxegt

Stanje: novo, Condition: New Delivery time: approx. 4 months from order Country of origin: Italy Price: €66,700 Leasing rate: €1,260.63 Pressing force: 150 t Stroke: 500 mm Cgsdpfx Ahowirpioxot Table: 1,550 x 2,000 mm Mounting height: 800 mm Rapid traverse: 20 mm/s Working speed: 3 mm/s Length: 2,350 mm Width: 2,000 mm Height: 2,500 mm Weight: 4,100 kg Cylinder fixed or horizontally movable Clear gap between uprights: 1,550 mm Horizontally movable cylinder: 1,000 mm Hydraulically movable frame: 1,300 mm Horizontally movable cylinder Hydraulically movable frame Operation via hand lever and control panel Equipment in accordance with CE regulations Operating manual in GERMAN and ENGLISH OPTIONS: Worktable welded to base frame, with holes on the surface Control panel on swivel arm (push buttons for press movement, solenoid valves, Siemens CPU) Wireless remote control panel (push buttons for press movement, solenoid valves, Siemens CPU) Siemens control with touchscreen Lifting cylinders in the table (6, 8, or 10 units) Anti-rotation device for the ram 2 speeds for frame and cylinder movement Oil cooler and decompression valve

Stanje: novo, Condition: new Delivery time: approx. 4 months from order Country of origin: Italy Price: €117,000 Lease rate: €2,211.3 Pressing force: 125 tons Stroke: 500 mm Ram: 800 x 400 mm Table: 900 x 600 mm Installation height: 600 mm Throat depth: 300 mm Rapid traverse: 115 mm/s Reduced speed: 42 mm/s Working speed: 7 mm/s Return speed: 70 mm/s Motor: 15 kW Length: 1400 mm Width: 1950 mm Height: 2600 mm 4 ram guides T-slots in table Rexroth hydraulic unit Monitored solenoid valves Air/oil heat exchanger Pressure switch Two-hand control panel Stroke adjustment via limit switch Siemens CPU Fixed side safety guards Equipped according to CE regulations (IV enclosure) OPTIONS (prices on request): Draw cushion Prism guide Light curtain Siemens CNC control with touchscreen Hydraulic pump with variable speed Proportional valves Codpswirbrsfx Ahxjgt Side safety guards, movable with limit switch

Stanje: novo, Stanje: novo Dobavni rok: cca 4 mesece po naročilu Država izvora: Italija Cena: 104.000 € Leasing obrok: 1.965,6 € Tlačna sila: 125 t Hod: 500 mm Cedpfxowiqxpe Ahxsgt Miza: 1200x700 mm Vgradna višina: 600 mm Hitri pomik: 115 mm/s Delovna hitrost: 7 mm/s Povratna hitrost: 70 mm/s Motor: 15 kW Dolžina: 2550 mm Širina: 1500 mm Višina: 2600 mm 4-smerno vodilo bata Miza in bat z utori v obliki črke T Dvoročno upravljanje Nastavitev hoda Nastavitev tlaka