Weinig Rondamat 980 nakup rabljenega (1.152)

Stanje: rabljeno, Leto izdelave: 2006, Colour: Grey Unladen weight: 5,000 kg Price: On request - Special features: - Description: Currently not operational, issue with the sensor of spindle 7. - Year of manufacture: 2006 - Documentation available: No - CE certificate available: No - Serial number: 105364 - Number of spindles [pcs]: 7 - Spindle 1: - Motor power [kW]: 11 - Tool present: Yes - Spindle 2: - Motor power [kW]: 11 - Spindle 3: - Motor power [kW]: 11 - Spindle 4: - Motor power [kW]: 18.5 - Tool present: Yes - Spindle 5: - Motor power [kW]: 11 - Tool present: Yes - Spindle 6: - Motor power [kW]: 18.5 - Tool present: Yes - Min. planing width [mm]: 15 - Max. planing width [mm]: 231 - Min. planing height [mm]: 3 - Max. planing height [mm]: 161 - Infeed table length [mm]: 1000 - Feed roller diameter [mm]: 140 - Feed motor [kW]: 7.5 Nodpfeyr Ntcsx Ah Uolb - Extraction nozzle diameter [mm]: 160 - Options: Powerlock, powered table rollers, automatic feed system - Feed speed: - Min. feed speed [m/min]: 6 - Max. feed speed [m/min]: 36 - Feed system: - Brand: Weinig - Type: E-1/L - Max. infeed length [mm]: 5000 - Max. infeed width [mm]: 230.5 - Voltage [V]: 400 - Power consumption [A]: 242 - Fuse [A]: 315 - Power rating [kW]: 112.0 - Transport weight [kg]: 5,000 kg - Transport packages [pcs]: 2 Financial information VAT: The stated price is plus VAT VAT/margin taxation: VAT is refundable for businesses Delivery and trade-in possible at any time for all items in the industrial sector Yorick Diebels

Stanje: rabljeno, Leto izdelave: 2009, Colour: Grey Four-sided moulder Weinig Variomat Year of manufacture: 2009 Serial number: 113680 400 V, 32 kW, 64 amps Nlodpfxjwnhh Es Ah Uob Min.-max. working width: 20–230 mm Min.-max. working height: 8–120 mm Maximum tool diameter vertical spindle: 232 mm Maximum tool diameter horizontal spindle (excluding first): 200 mm Infeed table length: 1,950 mm Feed speed: 6-12 m/min Spindle diameter: 40 mm Spindle speed: 6,000 rpm 1st spindle (bottom): 5.5 kW 2nd and 3rd spindle (left and right): 7.5 kW 4th spindle (top): 11 kW 5th spindle (bottom): 5.5 kW Please note: The 5th spindle is not functional. Dimensions: 4,000 x 1,400 x H1,350 mm, weight: 2,500 kg. - Special features: - Description: Issue with 5th spindle - Year of manufacture: 2009 - Documentation available: No - CE marking present: Yes - CE certificate available: No - Serial number: 113680 Financial Information VAT: The indicated price is plus VAT VAT/differential taxation: VAT is deductible for businesses Delivery and trade-in possible at any time for all industrial equipment Yorick Diebels

Stanje: rabljeno, Leto izdelave: 2006, skupna širina: 4.210 mm, skupna višina: 1.830 mm, Dimensions (L x W x H): 190 x 421 x 183 cm Price: On request - Year of manufacture: 2006 - Documentation available: No - CE marking present: Yes - CE certificate available: No - Serial number: 107707 - Number of spindles [pcs.]: 5 - └ Spindle 1: - Motor power [kW]: 5.5 - └ Spindle 2: - Motor power [kW]: 7.5 - └ Spindle 3: - Motor power [kW]: 7.5 - └ Spindle 4: - Motor power [kW]: 7.5 - └ Spindle 5: - Motor power [kW]: 7.5 - Infeed table length [mm]: 1800 - Feed motor [kW]: 3 - Voltage [V]: 400 - Power consumption [A]: 78 - Fuse [A]: 80 - Total power [kW]: 36.0 - Transport dimensions: 1900mm x 4210mm x 1830mm (l x w x h) Financial information VAT: The stated price is plus VAT VAT/margin taxation: VAT deductible for businesses Delivery and trade-in possible at any time for all items from the industrial sector Nledowng Rfopfx Ah Ujb Yorick Diebels

Stanje: dober (rabljeno), Leto izdelave: 1995, Angle system for window production, consisting of: slotting unit for 8 tools with hydraulic stroke 75 mm (clamping height 600 mm), milling unit for 4 tools with hydraulic stroke 80 mm (clamping height 320 mm), with return function, equipped with IV 68 tooling. Nljdpfx Ahstqft Is Ueb

Stanje: zelo dobro (rabljeno), Leto izdelave: 1992, Nice machine in good condition due to coming from a small business, with low operating hours. Comes with IV 68 tool. Nodpfxju S Afcs Ah Uolb Still set up and ready for demonstration on site.

Stanje: dober (rabljeno), Leto izdelave: 1974, old but sturdy cast-iron planer planing width: 50 cm table length: 250 cm Nedsturkyepfx Ah Uelb two-knife cutterhead

Stanje: dober (rabljeno), Tlačna čevelj za Weinig stroj za skobljanje in profiliranje Nlsdpfoyryzkjx Ah Usb

Stanje: rabljeno, Stanje nastavitve za profil Weinig Powerlock Nedpfjxga Eqex Ah Uelb

Stanje: rabljeno, Leto izdelave: 2010, Funkcionalnost: nepreverjeno, Weinig RS 2000 Nodpowmw Dasfx Ah Ujlb

Stanje: zelo dobro (rabljeno), Leto izdelave: 2004, Funkcionalnost: popolnoma funkcionalen, Tehnični podatki: Dolžina lesene obdelovanca: 150–700 mm Širina lesa: 40–150 mm Debelina lesa: 20–50 mm Dolžina stiskalnice: 6100 mm Pritisna sila: 120 kN/12 t Moč rezkalne vretena: 15 kW Moč sekalnika: 5,5 kW Sistem nanosa lepila: Flankenjet / Lepljiva šoba Učinkovitost: Nsdpfxey N D A Us Ah Uslb Čepilni stroj – 2 paketa na minuto Stiskalnica – 2 takta na minuto

Stanje: rabljeno, Število vreten: 7 kosov Delovna širina: 260 mm Višina glajenja: 160 mm Nedpfx Ahjxzdwye Uslb Dolžina mizne deske: 2.500 mm Motor pomika: 4 kW Hitrost podajanja: 30 m/min. Brusilno in profilirno avtomat Weinig Powermat 500 za štiristransko glajenje in profiliranje lesa s CNC krmiljenjem in Powerlock sistemom za hitro zamenjavo.

Stanje: rabljeno, Leto izdelave: 2010, Število vreten: 6 kos Delovna širina: 230 mm Višina skobeljenja: 120 mm Dolžina ravnalne mize: 2500 mm Moč podajalnega motorja: 3 kW Hitrost podajanja: 5-30 m/min. Weinig Powermat 500, letnik 2010 v okenski izvedbi Tehnične kratke značilnosti: ----- - 6 vreten, od tega 5x PowerLock Nlodpsyq S Duefx Ah Usb - 8.000 o/min - velika PowerCom upravljalna enota - vretena 2, 3, 4 aksialno CNC vodena - vretena 2, 3, 4, 5 radialno CNC vodena - okenski paket za izrez steklenih letvic: pnevmatsko časovno uravnavanje vreten desno in zgoraj za izrez letvic Za podroben opis glejte priložen PDF dokument. Opcije z dodatnim doplačilom: ----- - obstoječe skobeljne in letvičarske orodje Leitz (cena na zahtevo!) - Maweg Saturn Duo stroj za brušenje posameznega lesa, letnik 1985 v vezavi ter transportni sistem za vračanje obdelovanca. Cena 4.000 EUR (tehnični podatki so po navedbah proizvajalca, brez jamstva!)

Stanje: rabljeno, Leto izdelave: 2004, Funkcionalnost: popolnoma funkcionalen, Ponujamo rabljeno optimizacijsko prečno žagalno linijo WEINIG Dimter OPTICUT S75-4, letnik 2004. Proizvajalec: WEINIG Dimter Model: OPTICUT S75-4 Letnik: 2004 Stanje: rabljeno ID kategorije: 171 ID tipa: 2446 Tip: optimizacijska prečna žagalna linija Če imate vprašanja ali želite več informacij, nam pošljite sporočilo ali nas pokličite. Nlsdey S T Uxopfx Ah Ueb

Stanje: rabljeno, Leto izdelave: 1996, Barva: siva Teža: 3.500 kg - Leto izdelave: 1996 - Dokumentacija na voljo: ne Nedpfx Ajy Il Uceh Uslb - CE-certifikat prisoten: ne - Serijska številka: 10.6654 - Dolžina dovajalne mize [mm]: 8800 - Dolžina izhodne mize [mm]: 6650 - Napetost [V]: 400 - Varovalka [A]: 25 - Moč [kW]: 8,0 - Transportna teža [kg]: 3500 kg - Transportni paketi [kos]: 6 Finančne informacije DDV: Navedena cena je brez DDV DDV/obdavčitev razlike: DDV je odbiten za podjetnike Dostava in odkup oziroma menjava sta možna kadarkoli za vse iz industrijske dejavnosti Yorick Diebels

Stanje: rabljeno, Number of spindles: 5 pcs. Working width: 230 mm Planing height: 120 mm Surface table length: 2500 mm Feed motor: 4 kW Feed speed: 5–30 m/min Control: Memory function Weinig Powermat 400 with HSK/Powerlock, axially/radially CNC-controlled ----- The machine is currently being refurbished by us! Photos before dismantling and currently during the refurbishment process! Summary: ----- 5 spindles with 8,000 rpm 4 x HSK/Powerlock Axial and radial CNC adjustment of the spindles via control system CNC-controlled adjustment and positioning of the feed Table plates with guide knives at spindles 2 and 3 Including Weinig/Neumann return feed system RF 15 Detailed description: ----- Technical Data: Working width: 20–230 mm Working height: 8–120 mm 1. Tool holder – bottom ----- Motor with brake: 5.5 kW Spindle diameter: 40 mm Speed: 6,000 rpm Tool diameter: 93–145 mm Axial adjustment range: 5 mm Rebate device MarathonCoatin table inlay in front of 1st lower tool holder 2. Tool holder – PowerLock – right ----- Motor with brake: 7.5 kW Nedpfx Aeyy A Iqjh Ujlb Shared motor with left tool holder Speed incl. high-performance ball bearings: 8,000 rpm Tool diameter 40 mm below table level: 93–200 mm Tool diameter 55 mm below table level: 93–180 mm Tool diameter for straight knife heads max. 163 mm Max. tool diameter behind fence level: 180 mm Max. moulding depth: 35 mm Axial adjustment range: 55 mm Spindle axial CNC-controlled Table plates with guide knife 3. Tool holder – PowerLock – left ----- Motor with brake: Shared with 2nd spindle Speed incl. high-performance ball bearings: 8,000 rpm Tool diameter 40 mm below table level: 93–200 mm Tool diameter 55 mm below table level: 93–180 mm Tool diameter for straight knife heads max. 163 mm Max. moulding depth: 35 mm Axial adjustment range: 55 mm Spindle axial and radial CNC-controlled Table plates with guide knife 4. Tool holder – PowerLock – top ----- Motor with brake: 7.5 kW Speed incl. high-performance ball bearings: 8,000 rpm Tool diameter: 93–200 mm Tool diameter for straight knife heads max.: 180 mm Max. moulding depth: 35 mm Axial adjustment range: 40 mm Segmented pressure shoe in front of the upper tool holder, adjustable to tool diameter and swiveling away from the tool, spring-loaded. Pressure shoe before and chip removal after the upper tool holder with electronic digital displays, integrated into memory function. Spindle radial CNC-controlled 5. Tool holder – PowerLock – bottom ----- Motor with brake: 7.5 kW Speed incl. high-performance ball bearings: 8,000 rpm Tool diameter: 93–200 mm Max. moulding depth: 15 mm Axial adjustment range: 35 mm Feed system ----- Frequency-controlled feed, steplessly adjustable with brake: 4 kW, 5–30 m/min Infeed roller in front of 1st lower tool pneumatically controlled (up/down) Durofer pointed tooth rollers (Weinig patent) with depth limiter and self-cleaning...

Stanje: dober (rabljeno), Funkcionalnost: popolnoma funkcionalen, delovna širina: 230 mm, višina skobljanja: 170 mm, premer vretena: 40 mm, širina skobljanja: 230 mm, delovna višina: 170 mm, moč pogonskega motorja podajalnika: 5.500 W, največja hitrost vretena: 6.000 obr/min, hitrost vretena (min.): 6.000 obr/min, vrsta nastavitve višine: električni, premer gredi skobeljnika: 40 mm, vrsta vhodnega toka: trifazni, število vreten: 9, moč: 95 kW (129,16 KM), vhodna frekvenca: 50 Hz, Oprema: kabina, Four-side planer Weinig Unimat 23 Lamella Machine 9 spindles, grooved bed working width: 230 mm, Nsdpfx Ahjx Hkp No Uelb working height: 170 mm, spindle diameter: 40 mm, feed: 5.5 kW / 6 – 36 m/min, spindle arrangement: 1-bottom (5.5 kW) 2-right (5.5 kW) 3-left (5.5 kW) 4-right (5.5 kW) 5-top (11 kW) 6-bottom (5.5 kW) 7-top (7.5 kW) 8-bottom (37 kW) 9-universal (11 kW) 5 powered rollers in the table

Stanje: dober (rabljeno), Leto izdelave: 1989, Funkcionalnost: nepreverjeno, delovna širina: 220 mm, višina skobljanja: 120 mm, premer vretena: 50 mm, širina skobljanja: 220 mm, delovna višina: 120 mm, skupna masa: 7.500 kg, največja hitrost vretena: 6.000 obr/min, hitrost vretena (min.): 6.000 obr/min, vrsta nastavitve višine: električni, vrsta vhodnega toka: trifazni, število vreten: 10, moč: 105 kW (142,76 KM), vhodna frekvenca: 50 Hz, Oprema: kabina, motorna zavora, Weinig Hydromat 22 B With grooved bed 10 spindles Working width: 220 mm Working height: 120 mm Spindle diameter: 50 mm Feed: 7.5 kW / 8–40 m/min Spindle arrangement: 1–Bottom (7.5 kW) – with hydro clamping Nodpfxju Udd Sj Ah Uelb 2–Right (7.5 kW) 3–Left (11 kW) 4–Right (7.5 kW) – with straight jointer 5–Left (7.5 kW) 6–Top (15 kW) – with hydro clamping 7–Bottom (7.5 kW) – with hydro clamping 8–Top (7.5 kW) – with hydro clamping and straight jointer 9–Bottom (7.5 kW) – with hydro clamping and straight jointer 10–Universal (7.5 kW) 6 powered rollers in the table

Stanje: pripravljen za uporabo (rabljen), Leto izdelave: 2007, Funkcionalnost: popolnoma funkcionalen, Oprema: vrtilna hitrost brezstopenjsko nastavljiva, Naprodaj je linija za izdelavo oken UC Matic 15 ter Powermat 500 podjetja Weinig, ki obsega naslednje glavne komponente: - Mehanzacija dovoda - CNC obdelovalni center Unirex 2000 - CNC naprava za obdelavo koncev Unitec 15 - CNC vzdolžni profilirni stroj Unicontrol 12 - Avtomatski sistem za obračanje dvojnih delov in vračanje - Izhodni zalogovnik - Powermat 500 z mehanzacijo Linija je zasnovana kot celovit proizvodni sistem za obdelavo oken in profilov ter omogoča učinkovito in prilagodljivo proizvodnjo. Stroje demontira specializirano strokovno podjetje. Stroški demontaže so prikazani ločeno in jih nosi kupec. Nledpfx Aox Sqxhjh Ujb

Stanje: pripravljen za uporabo (rabljen), Leto izdelave: 2010, Funkcionalnost: popolnoma funkcionalen, številka stroja/vozila: 114550, delovna širina: 230 mm, višina skobljanja: 120 mm, število vreten: 6, Planing and Moulding Machine Weinig Powermat 500 for four-sided planing and profiling of solid wood. The machine is equipped with CNC control as well as the proven PowerLock quick-change system, and additionally features a mechanized return system for the planed parts, making it ideal for efficient production. Machine Equipment: - 6 spindles 1st spindle: 7.5 kW, 8,000 rpm 2nd spindle: 7.5 kW, 8,000 rpm, PowerLock 3rd spindle: 7.5 kW, 8,000 rpm, PowerLock 4th spindle: 7.5 kW, 8,000 rpm, PowerLock 5th spindle: 7.5 kW, 8,000 rpm, PowerLock 6th spindle: 7.5 kW, 8,000 rpm, PowerLock - Working width: 20 – 230 mm - Working height: 8 – 120 mm Njdpfx Ahex Sxfvj Ujlb - Worktable: 2.5 m (including jointer fence) - Top pressure rollers, spring-loaded - Side pressure pneumatically actuated - Frequency-controlled feed unit with brake, feed speed: 5 – 30 m/min - Reduced distance between feed rollers at feed section (400 mm) - Additional feed rollers and reduced roller spacing - Durofer steel roller, self-cleaning - Infeed roller before the 1st bottom tool, pneumatically actuated - Siemens/ Powercom control system The machine is in very good, well-maintained condition. It has been professionally operated, serviced regularly, and will remain in operation until 17 December 2026. Inspection of the running machine is possible at any time by appointment. The tools for the 6 spindles are included in the price. Dismantling and loading will be invoiced separately to the buyer. The technical description and layout of the machine can be found in the documents.

Stanje: zelo dobro (rabljeno), Leto izdelave: 2002, Funkcionalnost: popolnoma funkcionalen, Petgredna skobeljna WEINIG mod. UNIMAT 500 - Sestava: 1. spodnji vodoravni vreteno 2. desni navpični vreteno 3. levi navpični vreteno Nlodpfjywflyjx Ah Ueb 4. zgornji vodoravni vreteno 5. spodnji vodoravni vreteno - Opremljena z napravami MEMORY SYSTEM - Širina 230 mm - Pogon preko kardan - Naprava za kratke kose - Rebrasta miza - Leto 2002 - CE standardi

Stanje: rabljeno, Na prodajo stroj skupaj z vsemi orodji, kot je prikazano na fotografijah. Nlodpfx Ahjy Rumts Usb

Stanje: zelo dobro (rabljeno), Leto izdelave: 1993, Funkcionalnost: popolnoma funkcionalen, Moči vreten: Spodnje vreteno: 4 kW Desno vreteno: 7,5 kW Levo vreteno: 7,5 kW Zgornje vreteno: 7,5 kW Spodnje vreteno: 4 kW Univerzalno vreteno: 4 kW Širina skobljanja: 220 mm Višina skobljanja: 120 mm Maks. hitrost vretena: 6.000 obr/min Nodpfxsyybdws Ah Uslb Premer vretena: 40 mm Maks. podajanje: 22 m/min (brezstopenjsko) Motor za podajanje: 3 kW Glavni motor: 7,5 kW Pnevmatski zgornji pritisk Podajanje preko kardanskega pogona Motorizirana nastavitev (širina in višina skobljanja) Dolžina vhodne mize: 2.000 mm Integrirana črpalka za mazivo

Stanje: rabljeno, Leto izdelave: 1996, Funkcionalnost: popolnoma funkcionalen, višina skobljanja: 160 mm, premer vretena: 40 mm, širina skobljanja: 230 mm, vrsta nastavitve višine: električni, vrsta vhodnega toka: trifazni, vhodna napetost: 400 V, dolžina mize: 1.970 mm, število vreten: 5, premer povezave za izpihovanje: 140 mm, Oprema: kabina, - nemška proizvodnja - rebrasta delovna plošča - leto proizvodnje 1996 - pogonski valji v delovni plošči TEHNIČNI PODATKI: - širina skobljanja 230 mm - višina skobljanja 160 mm - rebrasta delovna plošča - premer vretena 40 mm 1. spodnje vreteno 7,5 kW 2. desno vreteno 7,5 kW 3. levo vreteno 7,5 kW 4. zgornje vreteno 11 kW 5. spodnje vreteno 7,5 kW - podajanje z nastavljivo hitrostjo 6–36 m/min - moč motorja podajalnega stroja 5,5 kW Njdpfxsy Hq Hnj Ah Uolb - šest zgornjih pogonskih jeklenih valjev - dva zgornja pogonska gumijasta valja - trije pogonski valji v delovni plošči - pnevmatski pritisk podajanja - pnevmatski pritisk čeveljčka - vretena z zavorami - dolžina vhodne mize 1970 mm - električna nastavitev višine - centralno (deljeno) mazanje - premer sesalnih priključkov 140 mm Dimenzije stroja: - (dolžina / širina / višina): 410 × 200 × 180 cm - teža ~ 3000 kg

Stanje: rabljeno, Leto izdelave: 2006, številka stroja/vozila: 105554, We offer this used Weinig Conturex window production line, year of manufacture 2006. Machine number: 105554 Machine type: Conturex Year of construction: 2006 Wiring diagram number: FP 3013 Supply voltage: 3×400 V Supply frequency: 50 Hz Control voltage: 230 V Control frequency: 50 Hz Auxiliary voltage: 24 V Auxiliary frequency: 0 Hz Main fuse: 139 A Current capacity: 160 A Power: 61 kW If you have any questions or require further information, please send us a message or contact us by phone. CNC machining centre for the processing of wooden profiles (windows, doors, etc.). Additional linear tool magazine (120 positions). 2 four-axis working heads for simultaneous machining (20kW each). Automatic loading and unloading tables. Optionally, a comprehensive tooling package is available (tool holders, angle aggregates, profiling heads). The machine is currently in continuous operation. The machine was purchased in 2024 after a complete overhaul. Since then it has been running for 15 months on a single shift. Technical data: Working ranges: Minimum width: 25 mm Maximum width: 260 mm Minimum height: 10 mm Maximum height: 150 mm Minimum length: 180 mm Maximum length: 4500 mm The maximum working length can be achieved by multiple re-clamping of the element. Milling spindle no. 1: Number of axes: 4 Motor power S1: 20 kW Motor speed range: 0–18,000 rpm Rotation directions: Right / Left C-axis: Yes Feed rates: - Z-axis: 60 m/min - Y-axis: 120 m/min - C-axis: 450°/s Hand tool changer for milling spindle no. 1: - Type: disc - Capacity: 18 tools - Tool holder spacing: 100 mm - Maximum single tool weight: 10 kg - Maximum total tool weight: 130 kg - Tool holder type: HSK F 63 Milling spindle no. 2: Motor power S1: 20 kW Motor speed range: 0–18,000 rpm Rotation directions: Right / Left C-axis: Yes Feed rates: - Z-axis: 60 m/min - Y-axis: 120 m/min - C-axis: 450°/s Nljdpfx Aeyu Sn Ujh Uob Hand tool changer for milling spindle no. 2: - Type: disc - Capacity: 18 tools - Tool holder spacing: 100 mm - Maximum single tool weight: 10 kg - Maximum total tool weight: 130 kg - Tool holder type: HSK F 63 External tool magazine: - Type: linear - Capacity: 120 tools - Tool holder spacing: 80 mm - Tool holder type: HSK F 63 Loading table: automatic cross-feed Unloading table: automatic cross-feed CNC control: PLC control: Siemens S7 Mobile control panel. Controller: - Operating system: Microsoft Windows - Modem for data transfer and diagnostics - Touchscreen Siemens Sinumerik 840 D Number of axes: 4 Machine is fully operational and currently in continuous production. At extra cost, the following equipment packages are available: 8 angle aggregates, 3 standard toolholder packages, 17 new spindle packages for heads.

Stanje: zelo dobro (rabljeno), Leto izdelave: 2004, Večlistna žaga Raimann ProfiRip KR 310 M (2 premični prirobnici) s paketno prečno žago HOLTEC ES 121SHKA ter odsesovanjem Hurricane Nsdpfxeymgype Ah Uelb Model: Raimann ProfiRip KR 310 M Leto izdelave: 2004 (obnovljena 2022) Večlistna žaga z 2 nastavljivima žaginima listoma Tehnične podrobnosti: Tirna širina: 340 mm Skupna širina prehoda: maksimalno 950 mm (namesto 800 mm) Višina reza z/brez pritiskalne plošče: 115 mm / 130 mm Minimalna dolžina obdelovanca: 450 mm Največji premer žaginega lista: 380 mm Najmanjši premer žaginega lista: 250 mm Luknja žaginega lista: 80 mm Premer žagine osi: 65 mm Število obratov žagine osi: 3900 obr/min Motor: 30 kW Laserske vodilne luči: 3 kosi Obratovalni tlak: 6 bar Brezstopenjska pomična hitrost: 8-48 m/min Pogonski motor: 1,5 kW Napetost: 400V / 50Hz