Beli Zallys Zallys M9 bekas (230)

Kondisi: bekas, Tahun pembuatan: 2021, Technical details: Pulling force: 1,600 N (towing capacity: 3,000 kg) Operating hours: approx. 5 h Own weight: 300 kg Dimensions (LxWxH): 1.6 x 0.7 x 1.3 m Electric Tow Tractor Application: e.g. towing carts, containers, etc., with loads up to 3,000 kg Drive: Electric 2x Pb battery, nominal capacity 96 Ah Travel speed with/without nominal load: 4 km/h Gradeability with 350 kg load: up to 15% Voltage: 24 V Motor type: MRP9D Pneumatic tires Front wheels swivel-mounted Ncjdpfx Aeu Nwigomkou Operation via tiller steering with 2 hand switches and control panel (emergency stop button) Coupling with coupling pin Ø 35x200 mm Accessories: High-frequency charger 220V User manual Condition: as is, hardly used In stock.

Kondisi: sangat baik (bekas), Fungsionalitas: berfungsi sepenuhnya, nomor mesin/kendaraan: 190840, Tahun pembuatan: 2019, kapasitas angkut: 600 kg, jenis bahan bakar: listrik, kapasitas baterai: 96 Ah, tegangan baterai: 24 V, Tipe ban depan: ban pneumatik (berisi udara), tipe ban belakang: ban pneumatik (berisi udara), berat kosong: 131 kg, Zallys JESPI platform trolley, tahun pembuatan 2019 Data: Zallys JESPI Tahun pembuatan: 2019 Jam kerja terbaca: Tanpa penghitung Kapasitas angkut (kg): 600 Berat kosong (kg): 131 Ban depan: Pneumatik Ncedpfx Aozc Nq Nemksu Ban belakang: Pneumatik Tahun baterai: 2019 Kapasitas baterai (Ah): 96 Tegangan baterai (V): 24 (2 x 12 V) Aksesori: Pengisi daya, buku manual. Keterangan: Platform dapat dimiringkan. Daya motor: 1 kW Kecepatan maks.: 5 km/jam Dimensi platform: P: 1200 mm x L: 850 mm x T: 200 mm. Dimensi unit: P: 1750 mm x L: 880 mm x T: 1270 mm.

Tahun pembuatan: 2016, Kondisi: bekas, Fungsionalitas: berfungsi sepenuhnya, nomor mesin/kendaraan: 16119, Trolley transport elektrik Zallys Jespi, tahun produksi 2016. Berfungsi penuh, tanpa kerusakan. Dilengkapi pagar samping tinggi khusus dari baja tahan karat yang sepenuhnya dapat dilepas. Pagar samping asli rendah termasuk dalam paket. Kapasitas muatan maksimum 500kg. Sebelumnya digunakan untuk pengangkutan makanan, sangat terawat dan tidak pernah kelebihan beban. Ncjdey Ubvispfx Amkeu

Kondisi: baru, daya: 1 kW (1,36 hp), jenis bahan bakar: listrik, warna: biru, berat keseluruhan: 336 kg, berat kosong: 290 kg, berat muatan maksimum: 150 kg, daya angkat: 150 kg/m, kondisi ban: 100 persen, kondisi penggerak: 100 persen, Tahun pembuatan: 2024, kapasitas angkut: 150 kg, The JustLift 150 crane was developed to accelerate and optimize all lifting and logistics operations, increase productivity, and at the same time ensure maximum safety and ergonomics for the operator. Manual push guidance. Arm operation via remote control. Electric lifting and extension Tipping protection system Lifting system Max. load capacity kg 150 No. of operators 1 Arm lifting speed mm/s 12.70 Arm lowering speed mm/s 12.70 Arm extension speed mm/s 12.70 Arm retraction speed mm/s 12.70 Power cut-off / Emergency stop Removable power connection Ncsdpek Dzy Ujfx Amkju Acoustic signaling Acoustic warning signals Hand-arm vibrations m/s² Currently, we can only offer brand new equipment.

Kondisi: baru, Tahun pembuatan: 2024, The Just Lift Crane JL250 to JL750 from Just Lift has been developed to accelerate and optimize all processes related to lifting and logistics, increase productivity, and at the same time ensure maximum safety and ergonomics for the operator. - Motorized tiller head control - Arm control via remote controllers - Hydraulic lifting and extension - Standard anti-tip system - 100% electric Max. forward travel speed km/h 4.0 Max. reverse travel speed km/h 4.0 Lifting system max. load capacity kg 250 to 750 Number of operators 1 Arm lifting speed mm/s 22.00 Arm lowering speed mm/s 15.00 Arm extension speed mm/s 7.00 Ncjdoh Tx R Tepfx Amkju Arm retraction speed mm/s 5.00 System pressure bar 125.00 Oil type ISO VG 46 Oil volume l 2.00 Weight without batteries kg 610 to 1,080 Net weight incl. 105/130A AGM batteries kg 680 to 1,146 Maximum length mm 2,835 Minimum length mm 1,891 Width mm 980 Height at handle/tiller mm 1,229 Maximum height mm 3,030 Minimum height mm 2,313 Maximum lifting height mm 3,010 Wheelbase mm 1,000 Turning radius mm 1,050 Currently, we can only offer brand-new machines.

Kondisi: baru, Fungsionalitas: berfungsi sepenuhnya, daya: 1 kW (1,36 hp), warna: biru, berat keseluruhan: 172 kg, berat kosong: 86 kg, Tahun pembuatan: 2025, nomor mesin/kendaraan: 250870, Zallys - Dumper Listrik Jespi termasuk paket baterai AGM 105 / 130 Ah termasuk pengisi daya termasuk buku petunjuk kapasitas beban maksimum di permukaan datar: 1000 kg tanpa maksimum: 30% Ncodeygid Djpfx Amkeu kecepatan maju maksimum: 5,5 km/jam kecepatan mundur maksimum: 5,5 km/jam dengan platform

Kondisi: bekas, Fungsionalitas: berfungsi sepenuhnya, Tahun pembuatan: 2021, Zallys Dumper Jet L - Unit pameran, tahun pembuatan 2021 - Tanpa emisi, hemat, senyap - Daya angkut: 500 kg - Kecepatan: 5,5 km/jam variabel Nsdpok Dz Haefx Amkjcu - Waktu operasi baterai: 8 jam - Waktu pengisian: sekitar 8 jam - Termasuk charger 230V - Termasuk bak 270 liter - PERHATIAN: Hanya mesin yang dijual. Kayu tidak termasuk! Tertarik? Silakan tulis atau hubungi kami. Weber Baumaschinen Erndtebrück

Kondisi: baru, warna: biru, kapasitas angkut: 1.000 kg, Perlengkapan: penggerak semua roda, Zallys HS4 elektrik – Unit pameran, tahun produksi 2023 - untuk beban hingga 1.000 kg - serbaguna dan kompak - kecepatan: 5,5 km/jam - bak La Buvette 600 liter - PERHATIAN: Hanya mesin yang dijual. Kayu tidak termasuk! Tertarik? Silakan hubungi kami melalui pesan atau telepon. Nedpfjk Dz E Djx Amkecu Weber Baumaschinen Erndtebrück

Kondisi: bekas, jarak tempuh: 21.758 km, daya: 118 kW (160,44 hp), pendaftaran pertama: 05/1983, jenis bahan bakar: diesel, berat keseluruhan: 9.800 kg, konfigurasi gandar: 2 gandar, warna: merah, tipe perpindahan gigi: mekanis,

Kondisi: baik (bekas), Tahun pembuatan: 2011, Mesin Pemotong CNC Portal Produsen: Microstep Tipe: MasterCut-AM 9001.20 Tahun pembuatan: 2011 Kontrol CNC: iMSNC dengan kartu jaringan terintegrasi Area kerja: 2.000 x 9.000 mm Meja hisap 1 unit pemotong oxyfuel Ketebalan pemotongan hingga 150 mm 1 unit penanda plasma Kjellberg Pointer laser Data teknis detail: 1x pemotong oxyfuel (otomatis penuh) 1x unit penanda plasma (otomatis penuh) Kjellberg Finsterwalde Njdpfx Aeudn Rzjmkocu Kontrol mesin CNC MicroStep® iMSNC dengan kartu jaringan terintegrasi Unit pengoperasian LCD di portal Pointer laser dengan transfer offset otomatis Database parameter kontrol iMSNC / Windows® Sistem pemrograman “AsperWin-Basic”, untuk pemrograman langsung di kontrol mesin Modul pustaka makro “AsperWin Select” Modul simulator NC “AsperWin NC-Sim” Modul “Penandaan Plasma” (untuk marking) melalui sumber plasma Modul “THC” / Regulasi tinggi otomatis berbasis tegangan busur Port USB2.0 untuk media penyimpanan Modul diagnosis jarak jauh MicroStep® “iFDS Win” Akses perawatan jarak jauh via TeamViewer Pengaturan gas terpusat melalui katup proporsional Database parameter untuk 1 burner Kabel energi Selang gas untuk oksigen pemanas, oksigen pemotongan Cutting torch mesin asetilena RHÖNA-Acetylen FIT+ 1 set regulation tinggi kapasitatif IHT / untuk oxyfuel 1 set unit penyulutan elektrik RHÖNA-Acetylen Pengaman kabel sisi ganda (perlindungan tabrakan) pada jembatan portal dengan tombol darurat Unit penanda plasma Kjellberg® FineMarker Support otomatis penuh untuk FineMarker Sistem penandaan plasma Kjellberg® FineMarker Interface CNC untuk FineMarker / integrasi ke kontrol CNC Modul untuk kontrol otomatis perangkat penandaan

Kondisi: diremajakan ulang (bekas), Tahun pembuatan: 2017, nomor mesin/kendaraan: R-00602, kapasitas angkut: 280 kg, jangkauan lengan: 3.103 mm, produsen pengendali: R-30iB B-Size, produsen teach pendant: A05B-2255-C101#EGN, Überholter FANUC M-900iB/280L, Baujahr 02/2017. Der Roboter wird mit einem R-30iB B-Size Steuergerät inklusive iPendant geliefert. Nedozf Uq Ejpfx Amkecu Unsere Experten haben den Roboter umfassend getestet und anschließend eine Wartung nach Herstellervorgaben durchgeführt. Das Schmierfett wurde auf den Eisengehalt geprüft, um den Zustand der jeweiligen Achsen zu beurteilen. Nur Roboter in einwandfreiem mechanischem Zustand werden komplett überholt, um eine langfristige Lösung für unsere Kunden zu gewährleisten. Dadurch können wir unsere Roboter standardmäßig mit einer 12-monatigen Gewährleistung ausliefern! Marke: FANUC Modell: M-900iB/280L Modellnummer: A05B-1335-B203 Baujahr Roboter: 02/2017 Gewährleistungsdauer (Monate): 12 Traglast (kg): 280 Reichweite (mm): 3103 Wiederholgenauigkeit (mm): ± 0,1 Anzahl gesteuerter Achsen: 6-Achs Montageart: Boden, Überkopf, Winkelmontage Gewicht (kg): 1600 Steuerung: R-30iB B-Size Baujahr Schaltschrank: 04/2017 Kabelkanallänge (m): 7 Teach Pendant: A05B-2255-C101#EGN Teach Pendant Kabellänge (m): 10

Tahun pembuatan: 1998, Kondisi: baik (bekas), Roboter aus einer Lebensmittelverpackungsfabrik. Nedsnbff Ropfx Amkjcu

Tahun pembuatan: 2001, Kondisi: sangat baik (bekas), Der Roboter befindet sich in einem sehr guten Zustand und scheint nur wenig genutzt worden zu sein. Nodpfx Amenbffiskjcu

Kondisi: sangat baik (bekas), ZEISS Model: DSM 962 The digitized scanning electron microscope DSM 962 is equipped with an integrated 4 MB image memory, a 40 MB hard disk for internal image storage, as well as drives for the external storage of data and images. This enables quick and easy acquisition of insights regarding the composition and morphology of specimen surfaces down to the sub-micron range. With a magnification range from 5x to 300,000x, the examination of both macrostructures and microstructures is possible. By using special accessories, the range of applications can be significantly expanded, enabling, for example, analytical investigations on micro-areas of the surface. Operation of the device can be performed using conventional control elements or, optionally, via keyboard and mouse. Electron optics and vacuum control are operated conventionally. Image memory functions are controlled via keyboard or mouse (optional). Centrally located on the control panel is a separate information display for menu visualization. This user manual is intended as a guide to help users achieve optimal results with the device. The explanations are kept as simple as possible to provide even less experienced users with the necessary knowledge. Magnification range: 20x to 300,000x at 7 mm working distance Steps in 1-2-3-5-10 sequence Minimum magnification: 5x at 50 mm working distance Resolution: 4 nm – guaranteed with tungsten cathode at 30 kV, 6 mm working distance, specimen not tilted 25 nm – guaranteed with tungsten cathode at 1 kV, 6 mm working distance, specimen not tilted 3.5 nm – guaranteed with optimal LaB6 cathode at 30 kV, 6 mm working distance, specimen not tilted Ncedpfx Ajzdthyjmkju Scope of delivery: (DSM 962 with accessories as shown) Condition: used (Subject to changes and errors in technical data and specifications!) Please inquire about transport options prior to purchase. For further questions, feel free to contact us by phone.

Kondisi: baik (bekas), Marking prism, inspection prism, prism, angle prism, clamping angle, clamping prism, clamping cube, prism block - Prism block: for marking plate, clamping plate, surface plate, straightedge bench, etc. - Prism width: 85 mm / 90° / 2 holes Ø 18 mm - Dimensions: see photo with technical drawing - Size: 300/102/H81 mm - Weight: 8.7 kg Njdpfx Aou I Hqdjmkjcu

Kondisi: bekas, nomor mesin/kendaraan: 1329, berat muatan maksimum: 1.050 kg, berat keseluruhan: 1.600 kg, konfigurasi gandar: 1 as, pendaftaran pertama: 04/1994, TÜV kann auf Wunsch neu gemacht werden. Geländean­hänger, ideal für Mercedes G-Modell, Land Rover, Toyota Land Cruiser und andere Geländewagen, in sehr gutem Zustand, kein Rost (feuerverzinkt), wirklich hervorragender Zustand! Sofort einsatzbereit, direkt aus Militärbeständen, sehr gut gepflegt und gewartet! Ausgestattet mit Auflaufbremse und Rückfahr- Automatik, Handbremse, Heckklappe, Dreikammer-Rückleuchten, Militärzugöse und Kugelkopfkupplung. DIN-Zugöse kann gegen Aufpreis ebenfalls geliefert werden. Holzboden (Siebdruckplatte), Mercedes G-Felgen, höhenverstellbare, stabile Stütze hinten rechts (sehr praktisch, wenn zum Beispiel ein Wohnzelt auf dem Anhänger montiert werden soll), 12-poliger NATO-Stecker (Umbau auf zivilen Stecker möglich). Vier Ausführungen vorrätig: Pritsche (offener Kasten), Pritschen Innenmaß L/B/H 2050/1040/490 mm, Plane mit Spriegel (Innenhöhe 820 mm), hohe Plane mit Spriegel (Innenhöhe 1550 mm), geschlossener Kasten mit klappbarem, gasdruckfederunterstütztem Deckel (Innenhöhe 850 mm). Gute Reifen (7.50 R 16). Der Anhänger ist äußerst stabil gebaut, keine Billigware! Achse und Auflaufbremse von ALKO (ausgezeichnete Ersatzteilversorgung, deutsches Fabrikat). Circa 15 HMK 92 Anhänger auf Lager! Der HMK M92 ist der ultimative Anhänger für Geländewagen. Zahlreiche weitere Allradfahrzeuge und Militärfahrzeuge im Angebot. Alle Fahrzeuge werden auf meiner Homepage präsentiert. Warum durch ganz Deutschland reisen, um Fahrzeuge zu besichtigen? Hier finden Sie über 150 Fahrzeuge der Typen: Hanomag AL 28, Magirus Deutz, MAN, Steyr, Dodge WC, Saurer, Unimog, GMC 6x6, Steyr-Puch, Iltis, Willys, G-Modell, Mowag, DB u.v.m. – alle optional mit TÜV. Außerdem eine riesige Auswahl an Ersatzteilen und Zubehör! Geben Sie sich nicht mit weniger zufrieden – rufen Sie an unter 0049 (0)2248. Viele Grüße, Ihr Philipp aus dem Hanfbachtal. Ncedpfx Amoqx S Awskeu

Kondisi: bekas, nomor mesin/kendaraan: 1379A, jarak tempuh: 1.638 km, daya: 179 kW (243,37 hp), pendaftaran pertama: 11/1986, jenis bahan bakar: diesel, berat keseluruhan: 15.322 kg, konfigurasi gandar: 3 gandar, warna: hijau, tipe perpindahan gigi: otomatis, Perlengkapan: ABS, kompresor, kopling trailer, pemanas parkir, penggerak semua roda, TÜV will be renewed! Special-purpose vehicle registration (So-KFZ Zulassung). The AM General is in excellent condition, sourced directly from the Army, well maintained and cared for. The bodywork is in superb condition (vehicle from reserve stock). The M944A1 is equipped with: all-wheel drive, 5-speed automatic transmission, transfer case with high and low range, power steering (very smooth), air brake system with ABS, 3 front seats. The body has internal dimensions (L/W/H) of 5550 / 2220 / 1910mm. Body equipment includes: lathe, tool cabinets with drawers, bench grinder, welding unit, permanently installed 110V 31kVA generator powered by vehicle engine (Cummins, only 105 operating hours) via PTO, 2-cylinder compressor with air tank, air connections in the body, overhead monorail, charger, large and small impact wrenches, angle grinder, magnetic drill, bench vice, large stationary heater and ventilation, many power sockets, interior lighting. The body can be opened on both sides and at the rear. Mileage is stated in miles. Truck driving license class 2 required (LKW). Tire size 14.00R20, tubeless (very good condition). Maximum speed: 90 km/h. Engine displacement: 14,011 cm³. 24-volt electrical system. Upon delivery, the M944A1 will not only have a new TÜV inspection but is also reliably roadworthy :-) May be insured affordably as a classic vehicle (youngtimer). This AM General is also already suitable for conversion to a motorhome or expedition vehicle. All my vehicles are listed on my homepage. – You rush around from Flensburg to Berchtesgaden to look at all the different vehicles, but here you’ll find over 150 vehicles including: Hanomag AL 28, Magirus Deutz, MAN, Steyr, Dodge WC, Saurer, Unimog, GMC 6x6, Steyr-Puch, Iltis, Willys, G-Class, Mowag, Mercedes, etc. – all available with TÜV. – Plus, there is an incredible range of spare parts and accessories. – Why settle for less? – Give me a call at 0049 (0)2248. Best regards, your Philipp from Hanfbachtal. Njdpfxeqx Sxae Amkjcu

Kondisi: bekas, nomor mesin/kendaraan: 1384A, jarak tempuh: 26.674 km, daya: 179 kW (243,37 hp), pendaftaran pertama: 07/1985, jenis bahan bakar: diesel, berat keseluruhan: 16.393 kg, konfigurasi gandar: 3 gandar, warna: hijau, tipe perpindahan gigi: otomatis, Perlengkapan: ABS, kompresor, penggerak semua roda, TÜV will be NEWLY issued!!! Special vehicle (So-KFZ) registration, the AM General is in really good condition, directly from the Army. Well maintained and cared for, the bodywork is in excellent condition (vehicle from reserve stock), the paint is still nice—classic Nato green matte. The M931A1 is equipped with: all-wheel drive, 5-speed automatic transmission, transfer case with road and off-road modes, power steering (very smooth), two diesel tanks with switch for left or right tank, elevated exhaust, air brakes with ABS, three front seats, and a saddle plate (fifth wheel) mounted for off-road applications. The fifth wheel can also be locked for road use using sliding wedges. The mileage is indicated in miles. Driver’s license class 2 (for trucks). Tire size 14.00R20 tubeless (in very good condition). Max speed 90 km/h. Displacement 14,011 cm³. 24 Volt electrical system. Upon delivery, the M931A1 not only has TÜV but also drives reliably :-) – A tractor unit truly suited for off-road applications! The AM General drives superbly and is a real pleasure. Can also be insured affordably as a youngtimer. ATTENTION! The dealer price is as is, without TÜV, etc. All my vehicles can be viewed on my homepage. Instead of running back and forth across Germany, from Flensburg to Berchtesgaden, to look at different vehicles, here you’ll find over 150 vehicles such as: Hanomag AL 28, Magirus Deutz, MAN, Steyr, Dodge WC, Saurer, Unimog, GMC 6x6, Steyr-Puch, Iltis, Willys, G-Class, Mowag, Mercedes-Benz, etc. – and many with TÜV. Plus, an incredible amount of spare parts and accessories. Why settle for less? Give me a call at 0049 (0)2248. Best regards, Philipp from Hanfbachtal. Ncodpfeqx S Aaex Amkju

Kondisi: sangat baik (bekas), jarak tempuh: 240.000 km, daya: 338 kW (459,55 hp), pendaftaran pertama: 01/2018, jenis bahan bakar: diesel, kondisi ban: 50 persen, konfigurasi gandar: 8x4, bahan bakar: diesel, warna: lain, kabin pengemudi: kabin harian, tipe perpindahan gigi: otomatis, kelas emisi: Euro 6, Tahun pembuatan: 2018, Perlengkapan: ABS, derek,

Kondisi: bekas, jarak tempuh: 78.163 km, daya: 130 kW (176,75 hp), pendaftaran pertama: 08/2017, jenis bahan bakar: diesel, berat keseluruhan: 7.490 kg, konfigurasi gandar: 2 gandar, warna: putih, tipe perpindahan gigi: mekanis, kelas emisi: Euro 6, lebar total: 2.530 mm, tinggi total: 2.660 mm, panjang ruang muatan: 4.050 mm, Tahun pembuatan: 2017, Perlengkapan: ABS, filter jelaga, pendingin udara, program stabilitas elektronik (ESP),

Kondisi: bekas, jarak tempuh: 78.163 km, daya: 130 kW (176,75 hp), pendaftaran pertama: 08/2017, jenis bahan bakar: diesel, berat keseluruhan: 7.490 kg, warna: putih, tipe perpindahan gigi: mekanis, jumlah tempat duduk: 3, panjang ruang muatan: 4.050 mm, lebar ruang muat: 2.530 mm, Perlengkapan: ABS, pendingin udara,

Kondisi: diremajakan ulang (bekas), Tahun pembuatan: 2012, nomor mesin/kendaraan: R-00620, kapasitas angkut: 260 kg, jangkauan lengan: 3.100 mm, produsen pengendali: R-30iA B-Size, produsen teach pendant: A05B-2518-C202#EGN, Überholter FANUC M-900iA/260L, Baujahr 12/2012. Der Roboter wird mit einem R-30iA B-Size Controller inklusive iPendant geliefert. Unsere Experten haben den Roboter umfassend geprüft und anschließend gemäß den Herstellervorgaben gewartet. Das Schmierfett wurde auf Eisenpartikel untersucht, um den Zustand der jeweiligen Achsen zu bewerten. Nur Roboter in einwandfreiem mechanischen Zustand werden komplett überholt, um unseren Kunden eine langfristige Lösung zu bieten. Dadurch können wir unsere Roboter standardmäßig mit einer 12-monatigen Garantie ausliefern! Marke: FANUC Modell: M-900iA/260L Modellnummer: A05B-1327-B503 Nedpfx Amszc E Haskocu Baujahr Roboter: 12/2012 Garantie (Monate): 12 Traglast (kg): 260 Arbeitsbereich (mm): 3100 Wiederholgenauigkeit (mm): ± 0,3 Anzahl Achsen: 6-Achsen Montagearten: Boden, Überkopf, Wand, Winkel Gewicht (kg): 1720 Steuerung: R-30iA B-Size Baujahr Schaltschrank: 11/2012 Kabellänge RCC (m): 7 Teach Pendant: A05B-2518-C202#EGN Kabellänge Teach Pendant (m): 10

Kondisi: siap digunakan (bekas), Siemens 1FT5066-0AF01 - Z Permanent Magnet Motor SN: E7M92927001002, Z = G45: Holding brake installed type EBD 0.8 M 24V - 18W, used, showing normal signs of wear, fully functional, scope of delivery as per photos Ncedpfovgpnfjx Amkou

Kondisi: siap digunakan (bekas), Siemens 1FT6064-1AH71-3EG1 Servomotor SN:YFM913199703003 dengan Absolute-Encoder F01 2048 S/R, direkondisi ulang secara profesional dan telah diuji, 100% berfungsi, pengiriman sesuai pada foto. Ncedpfx Amsy Nppaokeu

Kondisi: siap digunakan (bekas), Rexroth HNF01.1A-M900-R0094-A-480-NNNN IndraDrive, used, normal signs of use, 100% fully functional. ATTENTION: Please inquire separately for packing and shipping costs! Nsdpji Ecwkefx Amkecu