Used Wood-Mizer Mp410 for sale (6,726)

Condition: like new (used), Storti wood cutting line - Italian production - edger with a central disc with a pneumatic jump RM 400 S - crosscut saw TP2 - multisaw Multibi R16 - minimum material length 700 mm - maximum element width 500 mm - maximum element height 140 mm - line feed speed 30 m/min - total power 110 kW - space requirement 26 x 5.5 m TECHNICAL PARAMETERS: Hjdemv Ehzopfx Andenu 1 Strorti RM400 S edger - cutting width max 330 mm - cutting height max 140 mm - element width max 500 mm - maximum element length 5000 mm - engine power 3 x 11 kW - seven steel toothed bottom pulling rollers - two upper toothed pulling rollers - pneumatic material pressure - the jump of the central disc is pneumatic - feed table 5000 mm roll width 500 mm diameter 80 mm - receiving table with edging 5200 mm roll width 500 mm roll diameter 140 mm 2 Storti TP2 crosscut saw - width of the finished element max 1600 mm - width of the finished element min 700 mm - cutting height min / max - 20/140 mm - disc diameter 600 mm - spindle diameter 30 mm - engine power 2 x 7.5 kW - feed roller table 2570 mm width of rollers 500 mm diameter 100 mm - diameter of connections 2 x 160 mm 3 Multisaw Storti Multibi R 16 - material width max 150 mm - material height max 140 mm - engine power 2 x 22 kW - disc diameter max 300 mm - spindle diameter 50 mm - spindle height 160 mm - hydraulically adjustable feed - hydraulic side material pressure - two upper pneumatic clamps - connector diameters 2 x 220 1 x 160 mm - receiving conveyor 2000 mm - cross conveyor table 3200 x 1100 mm

Year of construction: 2023, condition: as good as new (ex-display), Joy in the forest Krpan CV a dream! Hedpfx Ajunmwcsndjnu KRPAN is the largest manufacturer of forestry winches in the world and also produces log splitters at the highest quality level! We have all models in stock and can deliver immediately. For a detailed description see .pdf data sheet in documents.

Condition: new, Year of construction: 2026, machine/vehicle number: GP6000H2, functionality: fully functional, input voltage: 400 V, type of input current: AC, pressing force: 12 t, total length: 6,000 mm, overall weight: 2,600 kg, working width: 180 mm, working length: 6,000 mm, Equipment: chassis, documentation/manual, MASSIVE GLUING PRESS FOR GLULAM Technical Specifications: Gluing Length: 6 m Multiple presses can be combined as needed to achieve the desired length (segments of 6 m) Pressure Bar Length: 980 mm Gluing Width: from 80 mm to 180 mm Overall Gluing Height: from 800 mm to 1300 mm (available as per inquiry) Cylinder Stroke: 150 to 300 mm Clamping Force: max 10 tons per cylinder; the appropriate force is adjusted on the pressure regulator We prepare 3D Model of the Machine for you to plan the floor space The hydraulic unit is equipped with a hydraulic accumulator and a pressure switch, which allows the hydraulic pump to operate intermittently during the pressing time. The hydraulic accumulator ensures constant pressure, even when the pump is not in operation. When the pressure drops, the pump restarts and refills the accumulator. Cycle Time: approximately 10 seconds. All surfaces that come into contact with the adhesive are protected with polished stainless steel, making it easy to clean adhesive with water. The press features two trolleys with pneumatic cylinders for the lateral alignment of the glued workpiece. Machine Weight: 2600 kg Power Supply Requirement: 5 kW, 3 x 400 VAC Hnsdpfx Aju Axfcsndju Options: -Customized length up to 6 meters -Customized working width -Number of trolleys for lateral alignment available upon request -Trolley with roller for adhesive application available upon request -Multiple presses can be combined as needed to achieve the desired length (segments of 6 m) last segment is as per order 2,0 - 6,0 meters -Customized Overall Gluing Height

Condition: new, Year of construction: 2025, functionality: fully functional, overall weight: 550 kg, fuel: super 95, cutting length (max.): 600 mm, Automatically saw and split wood with the RM480-B from H&R. The H&R Log Splitter RM480-B is the ideal assistant for your firewood preparation. The new 2026 model impresses with state-of-the-art technology and high performance for efficient sawing, splitting, and conveying of firewood. Thanks to the innovative design and powerful hydraulic system, work with this splitting machine becomes significantly easier – perfect for professional forestry operations and ambitious DIYers. Unlike competitors, the RM480 from H&R features FULLY hydraulic operation for ALL functions, allowing the work to be completed faster and more easily. Hodpfx Aneu Dnruedonu Product features RM480-B Performance: The splitter is equipped with a powerful 15 HP petrol engine (RM 480 B). Alternatively, it is also available with a 13 HP electric motor (RM 480 E). Log length and diameter: Logs up to 3 metres long can be securely placed on the sturdy standard table. The splitter handles logs up to 48 cm in diameter and cuts them to lengths up to 60 cm. Hydraulic system: The machine features a hydraulic saw bar. The hydraulic log clamp ensures secure fixation of the wood during the splitting process. Hydraulic height adjustment of the splitting cross is possible. You can choose between the supplied 4-way and 6-way splitting wedges – for flexible splitting patterns and individual adaptation to your needs. Conveyor belt: The newly designed 2.2 m feed belt facilitates log loading, while the laterally pivoting discharge belt makes transferring the split wood effortless. Mobile use: The splitter weighs only 750 kg including the trailer, and thanks to its practical transport frame, it can be moved by hand without difficulty. Easy operation: All functions can conveniently be operated hydraulically, making it suitable for extended operating periods. At a glance • Sawing, splitting, and discharge in one working step • All functions hydraulically controlled • Efficient, powerful engine • Splits wood up to 48 cm in diameter and 60 cm in length • Logs up to 3 m long (up to 6 m with accessory table!) Price Petrol engine (15 HP) RM 480 B (net) €7,385.71 Electric motor (13 HP) RM 480 E (net) €7,550.00 Additional options With the optional lifting table or chain conveyor, logs up to 6 metres in length can be effortlessly processed. Technical details Weight (incl. trailer): 750 kg Freight cost: €300 (transported in steel frame, without hydraulic oil) Final assembly time: approx. 4 hours Max. log diameter to split: 48 cm Max. log length to split: approx. 60 cm Max. log length: 300 cm Engine: Petrol, 15 HP Displacement: 420 cm³ Engine oil: 10W30 Hydraulic oil: 46 Hydraulic connections and control levers are already preinstalled, so the machine is ready for operation within a very short time. Benefit from the powerful and well-designed technology of the H&R log splitting machine RM 480. Order today and make your firewood processing more efficient, safer, and more convenient!

Condition: new, Year of construction: 2025, Wood chips are a common by-product generated by woodworking companies during the manufacturing process. Due to low options for realization wood chips are usually discarded by selling it to heating plants for a low price. Our MM-2000 hammer mill allows companies to turn wood chips into briquettable sawdust by shredding and crushing it through metal screens also known as sieves. Quick-release hatches allow quick and easy access for maintenance while keeping workers safe. Blades of the machine are not fixed and spin freely due to the centrifugal principle. This means that blades take less damage on impact and have an extended lifetime. Fixed blades can be ordered if required for specific produce. The mill can be ordered to fit various produce and applications ranging from reducing biomass waste to spice production, chemical and mineral. The perforated sieves and blades are easily interchangeable to adjust for different types of materials and purposes. Free test-mill of material is available on demand. Hodpfxsfh R I Ae Andsnu Capacity depends on material Dimensions 1765x960x1060mm. Weight 996 kg. Power 30/37/45kW, 50Hz, 380V.

Year of construction: 2017, condition: refurbished (used), ROLL CONTAINER, ROLLING CART, 3-sided, FIREWOOD, 155 cm 1 ROLLING CART, 810 x 720 mm Height approx. 155 cm Art. No. RW-3155 / 3-sided other models are for comparison only we produce CUSTOM SIZES, repair roll containers / rolling carts. Please inquire about specific heights. Side mesh in blue, back panel in blue, Rolling base in various colors ideally used as: Firewood cart; for yellow sacks; standard boxes such as E2 boxes, etc. with dimensions of 60 x 40 cm; transport cart, storage cart; shelving; etc. per roll container: Rolling base with 4 wheels, including 2 fixed and 2 swivel wheels; Rolling base / rolling plate in various colors; 2 side meshes, 100% in good condition + back panel incl. 4 connecting clamps & screws Weight: approx. 27 kg/rolling cart Hsdpsd Syhgjfx Andenu This offer includes only the roll container with a height of 155 cm. Other rolling carts are not included in the offer (for inspiration only). Price per piece: €69.00 plus the currently applicable value-added tax. Price applies per piece for an order of 1 roll container. Inspection possible by telephone appointment. Item is in good optical and technical condition (general overhaul). Extremely stable & can support up to 500 kg. PICKUP is possible after notification from WAREHOUSE 47441 MOERS. (Due to large stock levels, the goods can be inspected on site.) Due to time constraints, questions about this item can only be answered if you provide your telephone number. If you would like shipping, please contact us before purchasing to discuss shipping costs. Photos are similar.

Condition: good (used), Year of construction: 2006, Drum chipper, high-speed with horizontal infeed max. infeed width 450 mm max. infeed height 140 mm Motor 75 kw Hsdpfxsu Rl Rue Andonu with frequency converter for variable speed no vibrating chute included

Condition: excellent (used), Year of construction: 2018, operating hours: 4,351 h, functionality: fully functional, machine/vehicle number: W09812219J2D38029, first registration: 10/2018, overall weight: 19,000 kg, color: orange, axle configuration: 2 axles, operation weight: 18,760 kg, empty load weight: 18,760 kg, tire size: 600/50 R22.5 166F, next inspection (TÜV): 01/2026, maximum speed: 80 km/h, drive type: Zapfwelle, number of previous owners: 1, load hours: 4,351 h, crane manufacturer: Palfinger, Equipment: ABS, additional headlights, chaff cutter, compressed air brake, crane, front power take-off, lighting, power take-off driven, trailer coupling, Fully developed hydraulic counter-cutter, developed together with Doppstadt on the vehicle and fully operational! Spare parts supply is ensured by Doppstadt as well as TCS Umwelttechnik GmbH, Austria. - 2-axle trailer - Length: 6,360 mm / Width: 5,039 mm / Height: 5,834 mm - Transport width: 2,539 mm / Transport height: 3,929 mm / Transport length: 6,414 mm - Required power: 250 – 370 kW - Chipping drum: 6 knives - Hardwood trunks up to Ø 480 mm, softwood trunks up to Ø 600 mm - Feed height: 950 mm / Feed width: 1,200 mm - Rotor diameter: 1,000 mm / Rotor width: 1,200 mm / Loading height: approx. 1,400 mm / Infeed width: approx. 2,000 mm - Variable feed speed / closed and robust chipping drum / simple design and maintenance Hnsdpfx Ajxqgm Njndsu - Variable knife protrusion and easy screen basket change for high-quality wood chips from P16 to P100 (G30 – G100)

Condition: new, A device for storing and feeding logs onto a sawmill table. The systematic material feed to the saw increases its efficiency and eliminates the need for additional personnel. Dimensions: Width: 800–2000 mm Height: 800 mm Length: 4000–12000 mm (longer option) Log length: 1000–2500 mm Log diameter: 100–400 mm Hnsdpfx Answavrcodeu Feed speed: adjusted to the incoming feeder LOG FEEDING A device for storing and feeding logs onto the table of a gang saw. The targeted material feed to the gang saw increases its efficiency and eliminates the need for additional personnel. Dimensions: Width: 800-2000 mm Height: 800 mm Length: 4000-12000 mm Log length: 1000-2500 mm Log diameter: 100-400 mm Feed speed: Adapted to the feed rate

Condition: new, Year of construction: 2026, C6090 milling plotters are professional precision devices designed for small-sized processing of materials such as: wooden materials, chipboard, plywood, MDF, OSB, or PVC plastics, plexiglass, dibond, light metals. Training at CORMAK headquarters included in the price for each machine. Optional - the latest UCanCAM V13 software in Polish language version Drive Motors used to drive high-power machine tools provide appropriate acceleration and speed in individual directions. In the X and Y axes, high-quality toothed bars work, praised by users, which ensure high durability and precision, The Z axis is driven by a high-quality ball screw. All axes move on rail guides. The machine is equipped with a drive height sensor Spindle Brushless high-class spindle, which is characterized by durability. Liquid cooling system The spindle design uses high-quality machine bearings, characterized by very quiet operation and ensuring increased durability. Tool height measurement sensor - included. The spindle speed range is from 6000 to 24000 rpm. Software Hedjwcd Tmopfx Andenu OPTIONALLY The latest UCanCAM V13 software in the Polish language version (the software provides the ability to import files from Corel, Autocad, etc. File import/export, text editor and input and many other functions) The software allows for quick and easy design of elements, which the program then converts to the so-called G-code. It is also possible to import ready-made files from other programs. The machine is equipped with a function of remembering the last G-code path (In the event of a power failure or interruption, it starts working from the last point without losing time or material.) DSP control Digital Signal Processing The DSP controller of the machine has its own processor and RAM, which ensures trouble-free operation and simple operation of the machine. The controller ensures smooth operation of the device and accuracy during processing. After a power loss, there is no need to initialize the program from scratch. The memory built into the controller allows the machine to work without having to load the program every time. Technical parameters Spindle 2.2kW / 3.0kW / s1 / s6 24000 rpm. inverter Workspace 600x900x300 mm DSP control Program resolution 0.001 mm Power supply 230V Weight 310 kg Machine dimensions width 1370x length 1720x height 2050 mm Table height 750 mm Linear guides Drive transmission toothed rack (Z axis - ball screw) Axis drives stepper motors UCanCAM V13 software in Polish language version (option) Equipment leveling feet, screws, keys, training cutter package, ER32 collets - 1/8 inch, 1/2 inch, and 5-6 mm Unloading and machine location on the customer's side. Power plug on the customer's side due to different sockets 16A / 32A Price is only for machine itself

Condition: refurbished (used), Year of construction: 2020, operating hours: 1,400 h, functionality: fully functional, Wood chipper DH600-18.5KW, rotor width 600mm, rotor diameter 222mm, 28 blades, concave, 4 brush cutters, hydraulic pusher, built in 2020, completely factory overhauled Hnodpfov Iq Ebsx Andju

Condition: new, Year of construction: 2026, WOOD SHAVINGS MACHINE KÄLIN Hobeltechnik, mod. MPC-P Hsdpfx Anjvk Saxodonu • Quantity of fresh shavings by hour: 3.800 Kg/hour • Measures logs box: 2.800mm x 1100mm x 1.300mm • Max. log input length: 2.650mm • 2 removables symmetrical cutterheads. Lenght 1.140mm. Each one in 3 pieces of: - Diameter: 200mm - Length: 380mm - Number of knifes: 8 - Sharpening full cutterheads, without removing knifes!! • 2 extra removables symmetrical cutterheads, for replacement during sharpening. Super fast cutterheads change patented system!! • Power of the cutting heads: 90 kW/120 HP • Feeding speed controlled by ELECTRONICAL INVERTER: 6 to 36 m/min • Automatic control of the forward-charge ratio of the machine • Power of the feed motor: 15 kW/20 HP • Control System of the material level inside the logs box, to avoid working without logs • Cabinet and control panel. Touch screem to control the machine • Motorized conveyor belt for the wood shavings. 800mm x 5.000mm • Weight: 11.000 Kg • CE

Condition: used, Year of construction: 1985, used cleaned, function checked, test run, partly revised, new ball bearing manufactured by Maweg type Saturn D built in 1985 Masch.-No. 85-12-018 number of band aggregates 2 piece number of Finishaggregate 2 piece motors 4 kW sanding width ca. 150 mm sanding height ca. 150 mm belt oscillation band blow out feed speed 4 - 16 m/min. Hnedpfevwfalox Andju belt length ca. 1800 mm belt width ca. 200 mm height indicator  digital - mechanical Siko adjustment electrical fixed sanding pad 2-belt table height constant lateral moveable exhaust connection D 4 x 80 mm required space ca. l x w x h mm 2000 x 1200 x 2000 located in 97447 Gerolzhofen sale in current condition as seen - free on truck -

Condition: new, - New -Description:- Vertical version for splittingShort and meter wood- Robust and solid construction- Shock and scratch resistant due to high qualitypowder coating- Fast, tool-free gap height adjustment- Low base plate for easy,effortless loading of large logs- Phase inverter on all 400V models- Convenient transport with hand drawbardue to standard chassis with largePneumatic wheels and additional support wheel- Space-saving storage through simplelowerable cylinder- Powerful industrial hydraulic system- Two-hand safety circuit- With splitting material holderTechnical specifications:Dimensions and weightsLength approx. 1050mmWidth/depth approx. 1700 mmHeight approx. 2500mmWeight approx. 373.1 kgdrivePTO speed 540 rpmInput power 5.5 kWelectrical dataConnection voltage 400 VMains frequency 50 Hzdevice dataSplitting power max. 26.1 tGap length min. 560 mmGap length max. 1100 mmLog diameter min. 80 mmLog diameter max. 400 mmhydraulic systemHydraulic oil tank capacity 30 lItem No. 5981031 Hedpfx Anevwfziodonu

Condition: as good as new (ex-display), Exhibition machine The Holzprofi dehumidifier HT-100 is ideal for drying wood. The dehumidifier can also be used for drying cellars, construction sites, etc. Advantages and features: - High drying performance even at low temperatures, thanks to hot gas defrosting - Good dehumidification even at low humidity - High efficiency for energy-saving operation - High-quality machine from the industrial sector, durable and suitable for many purposes. Hjdpfx Anevrvmxodsnu - The practical control switches the dehumidifier off automatically when the desired humidity is reached. - Direct hose connection to drain large amounts of water without any problems Suitable for most soft and hard wood types such as spruce, beech, ash, as well as exotic woods and firewood. Due to the high tannic acid content, oak is conditionally or not recommended - as with other dehumidifiers. Technical data: Nominal power consumption: 1050 W Max. power consumption (35°C, 95% R.H.): 1480 W Air flow rate: 1100 mc/h Coolant: R410a (environmentally friendly) Operating range (temperature): 1-35 °C Operating range (relative humidity) T

Condition: new, €1,690 + 22% Italian VAT. For customers with a valid VAT ID, a net invoice will be issued. ----- With the Brugger Power Split S14, we present a powerful vertical log splitter with an impressive splitting force of 14 tonnes. This robust machine is ideally suited for a wide range of applications and offers maximum flexibility in drive options—either via the 3.7kW electric motor or the PTO shaft. Features: - 14T splitting force - Combination drive: 3.7kW electric motor & PTO drive - Weight: 250kg - Up to 110cm log length - Log lifting device The scope of delivery includes a log lifting device, making it easy to handle heavy logs. A hydraulic winch is optionally available, further expanding possible applications and simplifying operation. With a maximum splitting length of 110 cm, the Brugger Power Split S14 offers the flexibility to process even larger logs effortlessly. A log support table for shorter wood pieces is also included. The Brugger Power Split S14 is the ideal choice for anyone seeking a reliable and high-performance solution for wood splitting—whether for professional or personal use. Hnodpsxn Iq Refx Andou Prices + VAT: Power Split S14 = €1,690 Power Split S22 = €2,670 Power Split S30 = €2,960 Accessories: Support table for short wood = €125 4-way splitting wedge = €99 Hydraulic winch = €595 ----- Contact us for your tailored quotation!

Condition: excellent (used), Year of construction: 1996, Wood chip screening system Hnjdpjxn T R Ajfx Andju Manufacturer - Andritz Group, Model: Konewood CS600 Screen capacity: 400-675m3/h Sieving sawdust and shavings from wood chips Conveyors. Steel Structures: – Steel support structures for screens and conveyors – Ladders and walkways for operation and maintenance

Condition: used, Year of construction: 2006, Bruks drum chipper Model 820CM Hodexr Trnjpfx Andjnu Year of manufacture: 2006

Condition: used, Exhibition machine stock Roitham – Hans Schreiner bandsaw for wood – HBS-HS 480-400V Technical data: Motor output: 2.75 kW S 6 (2.2 kW at 100% duty cycle), 400 Volt Hodpfxsx H Ufuo Andjnu Saw blade width: 6 to 25 mm Wheel diameter: 475 mm Cutting width: 465 mm Cutting height: 290 mm Table size: 630 x 480 mm Tilting table: 45° Blade length: 3607 mm Weight: 162 kg Sample photo! Price subject to change. Errors and printing or typographical mistakes excepted.

Condition: refurbished (used), Year of construction: 2007, functionality: fully functional, power: 18.5 kW (25.15 HP), color: blue, Shredder Type GAZ 62 with G-Rotor Factory overhauled, new wear parts Feeding opening: 620 x 820 mm Hopper volume: 0.65 m³ Rotor diameter: 248 mm Hsdpfx Anox Eb Tmjdsnu Rotor working width: 600 mm Rotor speed: 80 rpm Cutting system: spiral rotor; 26 knives, 30 x 30 mm Screen perforation: 10 mm or as required Control cabinet: fully wired, incl. 5 m cable Motor power: 18.5 kW Hydraulic motor: 0.75 kW Connection power: 400 V +/- 5% / 50 Hz Suction nozzle diameter: 160 mm Overall dimensions approx.: L = 1,800 mm, W = 1,230 mm, H = 1,640 mm Weight: approx. 1,300 kg Including: - Automatic star-delta start - Automatic shut-off in idle mode - Vibration-damping machine feet

Condition: used, Year of construction: 1973, Weight 3 t x-travel 1000 mm 110 milling-head swivable +/- ja Hjdswzyt Tjpfx Andjnu

Condition: as good as new (ex-display), Demonstration unit with 7 operating hours immediately available (ex works Neckartailfingen) Shredder MRZ 830 Commodity code: 84659600 Year of manufacture: 2023 Infeed opening 800x1000 mm Motor: 22 kW; 400 V - 50 Hz - 3 phase Blades: multiple-rotation hydraulically actuated slide Hodpfxsv Sqrps Andonu Screen size selectable (10 - 40 mm) Weight approx. 1,600 kg Dimensions (l x w x h) approx. 2290 x 1420 x 1750 mm Turbo coupling Standard equipment includes: - automatic star/delta start - fast hydraulics - auto. OFF when rotor is idling - speed 70-90 rpm for high throughput - cycle control to avoid idle times - performance-enhancing step control of the hydraulic slide - Pertinax guides for hydraulic slide - vibration-dampening machine feet - CE compliant The shredder is designed for shredding natural wood, chipboard, and MDF, as well as other materials after testing and approval by the manufacturer. Included: - Shredder raised by 30 cm (preparation for conveyor belt) Additional shredder options: - Articulating conveyor belt + €8,770 net Horizontal section: 1200 mm Inclined section: 2500 mm Angle: adjustable from 0-60 degrees Discharge height: approx. 2000 mm + - 100 mm - Overband magnet + €6,780 net - Control for conveyor belt and overband magnet + €2,750 net (Start and stop synchronized with the shredder) Requirements for the raw material: - The moisture content (as received) must be below 30%, - Metals and mineral contaminants such as sand, stones, etc. lead to increased wear.

Condition: used, Year of construction: 2023, operating hours: 600 h, functionality: fully functional, power: 55.16 kW (75.00 HP), overall weight: 3,500 kg, The BBT 400 Woodzilla is a compact, powerful, and mobile drum chipper with aggressive feed, mounted on a 3.5-ton tandem trailer chassis and capable of 360° rotation. Hnjdpsykzlzjfx Andsu Technical Data Year of manufacture: 2023 Operating hours: approx. 600 hours Power: Diesel, Deutz TCD 2.9, 55 kW (75 HP), Stage 5 Feed opening: 320 x 500 mm Drum size: 400 x 500 mm, 4 knives Maximum log diameter: 32 cm Stabilisation: 4-way hydraulic support Z-crane Ben-Tele 550 Crane outreach: 5,500 mm Telescopic stroke: 1,100 mm Radio remote control for chipper and crane Brake system: Overrun brake Weight: 3,500 kg The machine is in good visual and technical condition. Location: North Rhine-Westphalia Availability: by arrangement Warranty: The machine is sold as-is at the time of delivery. The seller assumes no liability for defects. We reserve the right to prior sale, modifications, and repairs. Didn't find the right machine? Please contact us!

Condition: excellent (used), 4 knives Table length: 300 cm Table width: 63 cm Hnedjyk D H Iopfx Andju Motor power: 5 kW

Condition: used, Year of construction: 2017, operating hours: 8,222 h, first registration: 12/2017, We are offering this used UNTHA LR1000 wood shredder, year of manufacture 2017. Title: Shredder Model: LR1000 Serial number: LR106442 Year of manufacture: 11/2017 Power: 30.0 kW Voltage: 400 V Frequency: 50 Hz If you have any questions or need further information, please send us a message or contact us by phone. Hnodpfx Ajyhzwpsndsu