Beli Ess 350 bekas (82.929)

Kondisi: bekas, Clamping angle plate for workpiece clamping, measuring device - Dimensions: 400/350/H230 mm - Thickness: 35 mm - Slot width: 15 mm Chedecvpubspfx Aarjf - Surface: machined - Weight: 48 kg

Kondisi: baru, EN-ELMAG Stone Cutting Machine (incl. Diamond Blade) STM 600/350, 230 Volt STM 610/350 These impressive stone cutting machines deserve a closer look due to their robust construction, excellent handling, and not least, their outstanding price/performance ratio. It cuts virtually anything: tiles, exposed aggregate slabs, paving stones, marble and granite, bricks, clinker, engineered stone ... Ideal for construction companies, landscaping businesses, and tilers. ADVANTAGES - Lockable spring tensioner for reset in two saddle bearings - Water pump S1 Csdpet Hvlgjfx Aarshf - Blade cooling with dosing valve - Powerful drive motor 2.2 kW / 230 V - Safety switch with no-volt release - Long service life: steel roller table runs over water - Precision: Adjustable longitudinal stop, measuring scale - Unmatched cutting unit for very large cutting depths in reverse cut. - Includes segmented diamond blade for universal use TECHNICAL DATA Cutting capacity depth/length: 105 / 600 mm Diamond cutting blade Ø: 350 mm Diamond blade bore: 25.4 mm Nominal power: 2.2 kW Voltage/Frequency: 230/50 V/Hz Dimensions: 1130x570x1600 mm Weight: 72 kg

Kondisi: bekas, Tahun pembuatan: 2000, Chuck diameter 3,200 mm Swing diameter 3,500 mm Turning height 2,200 mm Dimensions (L x W x H) 7,730 x 6,240 x 6,700 mm Control type 840 D sl Voltage 3 x 400 V Frequency 50 Hz Speed 0.8 - 40 rpm Max. turning diameter 3,500 mm Total power requirement 51 kW Machine weight approx. 86 t Technical specifications Machine type: CNC vertical turning lathe Manufacturer: Rafamet Year of construction: 1973 (conventional) Completely overhauled and retrofitted with new control system 2010 Control system upgrade 2016 Control: Siemens 840 D Sl Condition: Very good Chuck Turning diameter of chuck: 3,200 mm Number of speed ranges for chuck: 3 (infinitely variable) Speed ranges for chuck: 0.8 - 40 rpm Codsuddcgepfx Aarshf Level I: 0.8 – 3 rpm Level II: 0.8 – 11 rpm Level III: 0.8 – 40 rpm Workpiece machining Max. turning diameter: 3,500 mm Max. turning height above chuck: 2,200 mm Vertical saddles Minimum axis distance between vertical saddles: 470 mm Max. ram travel of left vertical saddle: 985 mm Max. ram travel of right vertical saddle: 985 mm Axis feeds – infinitely variable max.: X1,2 3 m/min max.: Z1,2 2.5 m/min Rams not swiveling Crossrail Rapid traverse of crossrail: 600 mm/min Max. distance between crossrail and chuck: 2,300 mm Load capacities +Permissible torque for turning workpieces with a diameter of 2,000 mm at 20 m/min: 8,000 kg +Maximum chip section for steel workpieces Fz = 50 kg/mm² at 20 m/min, for all saddles: 45 mm² +Maximum chip section for steel workpieces Fz = 50 kg/mm² at 20 m/min, for one vertical saddle at max. ram extension 985 mm: 2.5 mm² +Maximum chip section for cast iron workpieces HB = 160 kg/mm² at 20 m/min, for all saddles: 120 mm² +Maximum chip section for cast iron workpieces HB = 160 kg/mm² at 20 m/min, for one vertical saddle at max. ram extension 985 mm: 22.5 mm² +Maximum permissible workpiece weight at 0.8 - 3.15 rpm: 17,500 kg +Maximum permissible workpiece weight at 4 - 40 rpm: 7,500 kg Electric motors Power and speed of main drive motor: 51 kW Feed motor power: - Vertical saddle beams (2 units): 16 Nm (gearbox 1:10) - Rams (2 units): 16 Nm (gearbox 1:12) Power and speed of hydraulic pump drive motors (2 units): 3 kW - 1,500 rpm Power and speed of clamping hydraulic motor for vertical saddle beam: 1.5 kW - 1,500 rpm Power and speed for crossrail drive: 15 kW – 1,500 rpm Compressed air supply and other resources Compressed air connection: 6 bar, oil- and water-free Energy consumption, requirements Voltage: 3 x 400 V Control voltage: 24 V Frequency: 50 Hz Protection: 315 A Main dimensions and weight of the machine Length: 7,730 mm Width: 6,240 mm Height: 6,700 mm Weight: 85,750 kg Tooling: Capto C6 holder Non-driven Faceplate Faceplate turning diameter: 3,200 mm Clamping plate diameter: 3,400 mm Number of faceplate speed ranges: 3 (infinitely variable)

Kondisi: diremaj di bengkel (bekas), Tahun pembuatan: 2019, Fungsionalitas: berfungsi sepenuhnya, tekanan kerja: 350 batang, panjang selang tekanan tinggi: 10.000 mm, tegangan masuk: 400 V, bahan bakar: listrik, berat keseluruhan: 160 kg, masa garansi: 6 bulan, The Kärcher HD 13/35-4 CAGE high-pressure cleaner is a highly efficient unit, designed to handle even the toughest tasks in large-scale facilities. During a comprehensive inspection and refurbishment, our service team thoroughly checked every function of the machine. All mechanical components showing signs of wear and tear were replaced with new ones, including: ceramic pistons, seals, bearings, and all O-rings. This ensures long and trouble-free operation, with no need for further investment in the machine in the future. Product advantages and equipment: - The photos shown depict the exact machine being offered. - The robust and durable brass pump head ensures reliable operation, even during prolonged and demanding use. - The powerful and efficient 3-phase motor delivers high operational performance and excellent results. - With operating parameters such as 350 bar pressure and 1300 l/h water flow, the device is suitable for use in industry, construction, transport, and logistics. - Thanks to its high performance, the same tasks can be completed in less time. Chjdpfx Aaov N Hlmerjf After refurbishment, the machine underwent comprehensive testing to confirm that all works have been properly carried out. The testing procedure ensures that the unit has regained all operational parameters as specified in the catalogue, including working pressure and water flow rate. Technical data: Voltage [Ph/V/Hz]: 3/400/50 Pump capacity [l/h]: 500 – 1300 Inlet temperature [°C]: max. 60 Working pressure [bar]: 100 – 350 Power rating [kW]: 15 Weight with accessories [kg]: 160 Dimensions (L × W × H) [mm]: 930 × 800 × 920 Included with the machine is a completely new set of accessories: - New power nozzle - New reinforced 15m high-pressure hose - New stainless steel spray lance - New 500 bar spray gun Water filter and GEKA connector are included free of charge in the set.

Kondisi: sangat baik (bekas), Tahun pembuatan: 2010, Battenfeld HM 110/350 Injection Moulding Machine Year of manufacture: 2010 Control System: Unilog B6 Operating hours: 35,000 Injection Unit: - Screw diameter: 35 mm - Injection pressure: 2083 bar - Injection volume: 169 ccm - Shot weight: 153 g Clamping Unit: - Clamping force: 1,100 kN - Distance between tie bars: 470 x 420 mm - Minimum mould height: 275 mm - Maximum mould height: 775 mm - Opening stroke: 500 mm - Ejector stroke: 150 mm General Information: - Machine dimensions (LxWxH): 4.0 x 1.5 x 2.1 m - Weight: 4,500 kg Codewq D Nqepfx Aarehf Specification: 1. Plasticizing unit with a 35mm screw diameter. 2. (06.X17) UNILOG B6 Euro-package consisting of: - 07.D00 adjustment components, - 02.K02 time-controlled air valve - 01.C01 NW 6 hydraulic core pull control on moving platen - 06.B21 robot interface according to EUROMAP 67 - 06.R02 Two 16A Schuko outlets mounted on the side of the control cabinet - 06.R20 Two 16A CEE sockets mounted on the side of the control cabinet 3. 06X06 UNILOG B6S Package comprising: - extended control system functions with additional programs - APS system - cycle time analysis - user pages - graphical visualization of actual values as 16 real-time curves - 4 envelope curves - extended alarm and event log for up to 10,000 events - Quality Table function extended for the last 10,000 cycles - additional USB ports for network connections - keypad with membrane buttons - SPC – Statistical Process Control of injection process - Injection speed, plastification and holding pressure controlled by servo valve 4 machines available in perfect condition.

Kondisi: sangat baik (bekas), Fungsionalitas: berfungsi sepenuhnya, Shelf length: 3500 mm Shelf width: 1300 mm Number of pistons: 8 Clearance: 430 mm Oil heating – built-in heater Chodpfx Aaowl Edlsrsf Piston diameter: 85 mm Emergency stop switch Weight: 4600 kg

Kondisi: baik (bekas), T-slot plate, clamping plate with dovetail slots, plate table, welding table -Intermediate plate: for hydraulic press/eccentric press Cjdpfomydncjx Aarehf -Opening: 150 x 100 mm -Slot width: 18 mm -Hole pitch: 200 x 250 mm, Ø 14 mm -Dimensions: 480/350/H60 mm -Weight: 66 kg

Kondisi: sangat baik (bekas), MRS 350 multi-saw - Feed belt width: 35 cm Csdjp Audxopfx Aarshf - Maximum cutting height: 13 cm - Main motor: 37 kW - Infinitely variable feed speed adjustment - Maximum saw blade diameter: 400 mm

Kondisi: baru, Rated capacity up to 300 kg/h Drive motor power 0.37 (0.5) / Washing system motor 0.12 (0.16) kW (HP) Electrical connection 400V 50Hz (3-phase) Electrical protection 16 A Length 1280 mm Width 870 mm Height 1350 mm Intake height 1265 mm Belt width 350 mm Belt length 4900 mm Feeding width 240 mm Feeding height 0–50 mm (infinitely adjustable) Weight 350 kg Chedpfsb Nc Shex Aarof Material 1.4301 / AISI 304 Juice yield up to 75% Belt speed 2 m/min Contact time 1 min Water consumption for cleaning 2 l/min Wastewater connection Ø48.3 mm Juice outlet connection 1" Juice outlet height 420 mm Wastewater outlet height 120 mm Pomace discharge height 700 mm

Kondisi: baik (bekas), Plastic injection moulding machine: Brand: BMB Model: KW650/3500 Clamping force: 650 tonnes Year: 1999 Weight: 32,500 kg Power: 128 kW Tie bar clearance (H x V): 860 x 760 mm Mould height (min-max): 250–900 mm Moving platen stroke: 1,000 mm Recently installed parts on the machine: 04/2020: Hydraulic safety valve on mould holding platen: €1,414 07/2021: Hydraulic pump + coupling: €4,666.74 (excl. VAT) 07/2022: Over €5,000 spent on electronic boards Optional robot: €7,000 Brand: Sepro Model: SR 4030 S3 Year: 01-08-2006 Csdpfsik H Ensx Aarshf

Kondisi: sangat baik (bekas), 15 kW motor 35 cm inlet 35 cm outlet 10,300 m³/h Chodpfx Aaemv Hzkeref

Kondisi: baik (bekas), Tahun pembuatan: 2007, Frame press GOMA PHA 3500 Door Press Hydraulic Location Gorzów Wlkp. Delivery terms Self-collection Shipping cost Negotiable Commissioning type Negotiable Description Notes Chjdpfx Aajdntc Nsrjf Working area: 3500 x 2300 mm, pressure: 1000 kg (daN), hydraulic unit motor: 2.2 kW, length: 3500 mm, height: 2300 mm, weight: 2000 kg, hydraulic unit included.

Kondisi: hampir baru (bekas), Tahun pembuatan: 2018, jam operasional: 11.300 h, Fungsionalitas: berfungsi sepenuhnya, jarak pergerakan sumbu X: 1.350 mm, jarak lintasan sumbu Y: 1.150 mm, jarak gerak sumbu Z: 700 mm, gerak cepat sumbu X: 30 m/menit, pergeseran cepat sumbu Y: 30 m/menit, model controller: itnc 530, berat benda kerja (maks.): 1.600 kg, beban meja: 1.600 kg, diameter meja putar: 1.100 mm, kecepatan spindel (maks.): 15.000 rpm, jam operasional spindle: 11.000 h, pasokan pendingin: 80 batang, jumlah slot dalam magazin alat: 30, MIKRON HPM 1350U, 2018, stroj je pod servisnim ugovorom, potpuno funkcionalan pod naponom. IKZ 80 BAR, Renishaw sonda, lasersko mjerenje, kinematika OPT, OSS ciklusi. Dostupno izvješće o geometriji. Cjdpfx Ajv Ibtcjarshf

Kondisi: baru, Tahun pembuatan: 2022, Fungsionalitas: berfungsi sepenuhnya, kapasitas pendinginan: 320 kW (435,08 hp), jenis arus masuk: tiga fasa, berat keseluruhan: 3.843 kg, suhu lingkungan (maks.): 40 °C, suhu lingkungan (min.): -25 °C, tegangan masuk: 400 V, laju aliran volumetrik: 55 m³/jam, lebar total: 2.210 mm, panjang total: 4.600 mm, tinggi total: 2.500 mm, tingkat kebisingan: 65 dB, jenis perlindungan (kode IP): IP54, frekuensi input: 50 Hz, HITEMA INTERNATIONAL CHILLER TFVF.350 POTENZA DI RAFFREDDAMENTO FREE COOLING 320KW ATTENZIONE: > Tipo di refrigerante: R-1234ze Cjdpfx Aov Rmdrjarshf > Questo refrigerante è classificato nel gruppo 2 'non pericolosi' secondo i criteri della Direttiva Attrezzature a Pressione (PED) 97/23/CE e 2014/68/UE. Secondo la norma ISO-817, il R-1234ze è classificato nel gruppo di sicurezza A2L > Devono essere rispettate le normative locali di costruzione e sicurezza > In assenza di normative e standard locali, consultare la guida alla EN-378 (2017) (requisiti di sicurezza per sostanze classificate come A2L) o la ISO-5149 (2014) (per sostanze classificate come A2L) > È responsabilità dell'installatore ottenere l'approvazione dalle autorità edilizie locali

Tahun pembuatan: 2025, Kondisi: baru, nomor mesin/kendaraan: 020, Star screen for biogas plants for processing a wide variety of materials such as maize, sugar beets, etc. The screening deck is used after the shredding machine with sugar beets to separate oversized particles. Alternatively, it can be used before shredding to remove foreign objects and protect the shredder, for example with maize. We offer various lengths, shaft configurations, and screen sizes, tailored to the material and throughput requirements. Chsdpfjbytafex Aaref Delivery time approx. 20 weeks.

Tahun pembuatan: 2016, Kondisi: siap digunakan (bekas), Other post-processing machines, Citronix inkjet device CI 3500 Chsdpfxehgw I Se Aarof

Kondisi: sangat baik (bekas), Tahun pembuatan: 2008, Technical specifications: Working length: 3,550 mm Frame width: 3,050 mm Press force: 230 t CNC control: CYBELEC ModEva 12S Controlled axes: Y1/Y2; X1/X2; R; Z1/Z2 Stroke: 550 mm Throat depth: 410 mm Installation height: 745 mm (extra high) Table width: 140 mm Working height: 1,065 mm CNC-controlled crowning CE marking Motor power: 42 kW Chjdpjwntqxefx Aarjf Dimensions (L x W x H): approx. 4,650 x 2,350 x 3,100 mm Weight: approx. 25 tons Accessories: 2 pcs. CNC-controlled front bending aids 1 pc. CNC-controlled rear bending aid!!! The seller assumes no liability for errors in writing or data transmission. The machine’s condition regarding appearance, technology, and wear corresponds to its age; used machines are sold without any warranty.

Kondisi: seperti baru (mesin pameran), Tahun pembuatan: 2025, Fungsionalitas: berfungsi sepenuhnya, tekanan kerja: 350 batang, tekanan: 350 batang, bahan bakar: diesel, daya: 3 kW (4,08 hp), New High-Pressure Unit Looking for a new high-pressure (HP) unit? We custom-build them to your specifications. Here, we present our newest HP unit, which is unique in the market—a true all-rounder, not offered in this configuration by anyone else! Specifications VIHT2350/20/40/100 (demo) Motor: 30 kW at 1500 rpm / 36 kW at 1750 rpm Cjdpfornkgiex Aarohf 2 x Mazzoni pump, 21 liters per minute per pump at 1450 rpm, set to 350 bar. The low speed ensures the motor runs quietly and smoothly. Pressure regulation via RPM control and manual setting of 2x Zero 350 valves. Hoses are virtually pressure-free (10 bar) when the spray gun is closed. This provides safe operation, as hoses and pumps remain depressurized until the handle is opened, building up pressure only when needed. 2 x burners for producing hot water up to 120°C. On request, V+ Steam option available, reaching 140°C at the nozzle. This machine enables two operators to work simultaneously and independently—each with different temperature and pressure settings. The drive system is specially developed for a long service life and easy maintenance. On board: 2 diesel tanks, 1 x 90 liters for the engine and 1 x 90 liters for the burners. Designed for 24/7 operation. Fitted with 2 water tanks, each 325 liters, providing a total water supply of 650 liters. The Vibemo easy start panel protects against overheating and low oil level (engine shuts off) and provides error indication. Additional safety for low water level and open valve during operation. You can also monitor operating hours, RPM, and alternator charge current here. Temperature control is user-friendly, displaying set and actual temperatures. As standard, a 3-way valve is included, allowing operation at 350 bar and 40 liters per minute (also with hot water up to 100°C max)—making it suitable for sewer cleaning or barn cleaning. Further equipped with emergency stop, interior lighting in engine and reel compartments. Hose reels and burners are made of high-grade stainless steel. All hoses are 50 meters in length as standard. Equipped with pre-water filter and intermediate filter per pump. Accessories: 2 spray guns, 2 flat-jet lances (25°, 20 l/min), 2 dirt blaster lances (20 l/min), 1 flat-jet lance (25°, 40 l/min), 1 dirt blaster lance (40 l/min), 2 pressure gauges for reading set pressure. 3 level sensors for diesel and water tanks for a neat, clear overview. All built into a tandem-axle trailer 2500 kg, (LxWxH) 300x150x150 cm. Supplied with 1-year warranty and full service package. Lead time approx. 6–8 weeks. Photos are for reference only; actual machine may differ slightly.

Tahun pembuatan: 2004, Kondisi: bekas, Sealpac 350 Traysealer Chodpfohquh Hjx Aarof

Kondisi: siap digunakan (bekas), Fungsionalitas: berfungsi sepenuhnya, The Multivac C350 vacuum packaging machine is ideal for demanding professionals seeking a high-performance and durable packaging solution. Designed to pack a wide range of products, whether solid or liquid, this tabletop vacuum sealer combines robustness with efficiency. Thanks to its powerful 63 m³/h pump, it ensures optimal vacuum sealing, extending the freshness and shelf life of products. This model offers additional flexibility with its directional castors and polymer loading plates, allowing easy movement and convenient use in various work environments. Equipped with a lid featuring a Securit glass viewing window, the Multivac C350 provides increased visibility during packaging, making it easier to monitor the process. The double-seam sealing bars guarantee a hermetic and reliable closure, enhancing the safety and quality of the packaged products. Its stainless-steel construction makes cleaning straightforward while complying with strict hygiene standards. The Multivac C350 is thus indispensable for any food business looking to improve packaging efficiency with a reliable and long-lasting machine. It perfectly meets the needs of professionals, offering an ideal balance of performance, durability, and flexibility. Technical specifications: - Pump: 63 m³/h for efficient vacuuming - Chamber dimensions: 420 x 440 x 160 mm Cjdpfxswff Azs Aarshf - Sealing: 2 bars, double seam of 1 x 3 mm and 1 x 1 mm - Weight: Approximately 160 kg for optimum stability - Structure: Stainless steel for easy maintenance and maximum durability

Tahun pembuatan: 2025, Kondisi: baru, Description:  Screen deck system consisting of one deck for screening green waste / biomass, reclaimed wood, particle size 0-100 mm  Throughput capacity up to 100 m³/h (depending on material)  Material separation into two fractions: 0-100 mm and oversize material  Screen deck with tarpaulin cover  Bearings for the screen deck are equipped with external lubrication Technical data:  Screen deck area: Length = 5,200 mm; Width = 1,215 mm Chedpfjfygd Sex Aaref  Overall dimensions: Length = 5,500 mm; Width = 1,850 mm  Screen area: 5.1 m², Number of shafts: 20 pcs  Drive: 2 x 7.5 kW gear motors  Screen body made of polyurethane (star screen) D 340/9 fingers  Screen shafts designed as plug-in system (easy and cost-effective adaptation to other particle sizes)  Bearings feature external lubrication; optional central lubrication system available at extra cost  Delivery time approx. 18 to 20 weeks

Tahun pembuatan: 2025, Kondisi: baru, nomor mesin/kendaraan: Neu, Description:  Screen deck system consisting of 1 deck for screening green waste / biomass with a grain size of 0-80 mm  Capacity up to 150 m³/h (material-dependent)  Material separation into 2 fractions: 0-80 mm and oversize  Screen deck with enclosure and extraction system for film pieces Chedpfed Rbnqjx Aaref  Extraction point adjustable  Suction and conveying fan mounted separately in a frame, hose D 300 / 350 mm Technical Specifications:  Screen Deck 1: Screening surface length = 6,360 mm; width = 1,215 mm o External dimensions: length = 6,690 mm; width = 1,850 mm o Screen area: 5.1 m², number of shafts: 24 o Drive: 2 x 7.5 kW geared motors o Screen body: polyurethane (star screen) D 340/9 finger o Screen shafts as plug-in system (easy and cost-effective adjustment to other grain sizes possible) o Bearing lubrication via 24V central lubrication system (without control unit; must be integrated into the plant control)  Suction and conveying fan o Drive: 1 x 15 kW (optional control via frequency converter, recommended but not included in the offer) o Optional with knife assembly Delivery time approx. 18 to 20 weeks.

Tahun pembuatan: 2025, Kondisi: baru, nomor mesin/kendaraan: Neumaschine auf Bestellung, Description: - Screening deck system with one deck for screening minerals from pre-crushed material - Maximum input grain size: 0-100 mm Chedpfx Aasd Rbmkjrof - Screen cut: 0-30 mm - Capacity approx. 60 m³/h (depending on material) - Material separation into two fractions: 0-30 mm and oversize - To be mounted on customer’s own impact plates or subframe Technical Data: - Screening deck: Length = 3,120 mm; Width = 1,400 mm - External dimensions: Length = 3,300 mm; Width = 2,050 mm - Screening area: 4.6 m², Number of shafts: 24 - Drive: 2 x 4.0 kW gear motors - Screening body: Polyurethane (star screen), D 166 / 12 fingers - Screening shafts as plug-in system (easy and cost-effective adaptation to other grain sizes) - Bearing lubrication routed to the outside, optional central lubrication available at extra charge - Colour: Black RAL 9017 / Green RAL 6018 or according to customer specifications (at extra charge) Delivery time: approx. 20 weeks

Tahun pembuatan: 2025, Kondisi: baru, Fungsionalitas: berfungsi sepenuhnya, nomor mesin/kendaraan: ESS B2 - *M 0--.10*, Star screen for screening materials such as soil, compost, wood chips, etc. Weight: 2,700 kg. Adjustable particle size from 12 to 40 mm. Connection: 3-phase, 400V, 32A current, 50 Hz frequency, total power 11.25 kW. Throughput: 40 to 60 m³/h depending on material and particle size. Delivery time approx. 14 weeks after order placement. Chodpeirnrpsfx Aaref

Tahun pembuatan: 2025, Kondisi: baru, Screen deck system consisting of 1 deck for screening waste wood Grain size: 0-25 mm Throughput capacity: approx. 80 m³/h (depending on material) Material separation into 2 fractions: 0-25 mm and oversize Screen deck with enclosure for extraction system Upstream acceleration belt and screen deck assembled as a single unit +++ Technical Specifications +++ Screen Deck 1: Screen area length = 4,540 mm; width = 1,215 mm External dimensions: Length = 4,820 mm; Width = 1,850 mm Screening area 5.1 m², number of shafts: 34 Drive: 2 x 5.5 kW gear motors Screen body: Polyurethane (star screen) D 166 / 12 fingers Cedpsd Rbngsfx Aarjhf Screen shafts as plug-in system (easy and cost-effective adjustment to different grain sizes possible) Bearing lubrication routed externally; central lubrication system available as an extra cost option Enclosure made from 2 mm screwed sheet metal panels +++ Acceleration Belt +++ Drive: 1 x 2.2 kW gear motor Belt width: 1,200 mm Belt length: approx. 3,000 mm External dimensions: Length = 3,500 mm x Width = 1,400 mm Delivery time: approx. 16 to 18 weeks