Used Dicing Machine Set Up For Cheese for sale (80,851)

Condition: excellent (used), Heavy duty cheese dicing machine, has auto load and discharge conveyors. It was bought new in 2017 and hardly used. Photos show machine without the conveyor belts fitted. These will be replaced with new ones Itjdpfx Aeqgfb Djiqef

Condition: like new (used), Thom Type SI Spout Inser­ter Machi­nes for inser­ting the spouts into pre­fa­bri­ca­ted pou­ches. Model - Thom SI‐900 Semi­au­to­ma­tic machi­ne Ide­al for sam­ple pro­duc­tion and small series pro­duc­tion Iodpfxex Utd Eo Aiqotf Capa­ci­ty: Up to 10 pou­ches / min. Thom fil­ling and packa­ging machi­nes are in demand ever­y­whe­re whe­re fle­xi­ble packa­ges need to be fil­led (pou­ches / refills): in the food indus­try, the cos­me­tics and deter­gents indus­try or in the beverage fil­ling.

Condition: new, functionality: fully functional, Year of construction: 2025, travel distance X-axis: 50,000 mm, travel distance Y-axis: 4,000 mm, input voltage: 380 V, input frequency: 50 Hz, warranty duration: 24 months, Equipment: cooling unit, GS-50040LB (Bevel Cutting) Ultra-Large Format Laser Cutting Machine 40kW Bevel Cutting + 60kW Straight Cutting Dual Beam, Dual Head, Dual Ultra Ultra-Large Cutting Area: 50m × 4m Itsdpfxjv Ng E Ts Aiqef Dual High-Power Cutting Heads – 60kW Straight & 40kW Bevel Cutting Precision Cutting for Ultra-Thick Plates Bevel Cutting Performance: ✔ Y-Bevel: 40kW | 20mm Carbon Steel | 1.4m/min ✔ K-Bevel: 40kW | 30mm Carbon Steel | 0.35m/min ✔ V-Bevel: 40kW | 50mm Carbon Steel | 0.2m/min ✔ Straight Cutting: 60kW | 150mm Carbon Steel | 0.3m/min Applications: Aerospace | Shipbuilding | Bridges | Heavy Machinery

Condition: new, Year of construction: 2024, functionality: fully functional, This powerful machine to meet the requirements of larger woodworking companies, ensuring exceptional sharpening results. Equipped with an electronic tooth counter and an autonomous cooling system. The ZM150 offers precise sharpening while maintainingoptimal operating conditions. With two electric motors, including a 150mm CBNdisk for sharpening and a motor reduction group for precise blade movement,this sharpener delivers outstanding performance. Power supply voltage - 380-400V Frequency - 50Hz Power - 0.20kVa Capacity - 65 teeth per min Blade width - 20 to 100 mm Tooth pitch - 6 -25mm Sharpening disc - Profiled 150mm CBN disc Weight - 115kg Itedpfjxiv Ugox Aiqjf

Condition: new, Year of construction: 2025, The ZM101 is a pioneering product in our lineup, designed to sharpen sawblades with widths of up to 100 mm at a remarkable rate of 65 teeth per minute. This efficiency enables it to simultaneously service 3-4 bandsaw/sawmill machines. Equipped with an abrasive ceramic disk, the ZM101 can expertly sharpen all teeth with profiles. Its robust construction allows it to perform reliably under the most demanding conditions, making it a favorite among our customers. Additionally, its straightforward design ensures ease of use and low maintenance costs, further enhancing its appeal. Technical characteristics: Maximum length of the blade: 6000 (8000) mm Minimum width of the blade: 20 mm Maximum width of the blade: 100 mm Maximum height of the tooth: 12 mm Front angle of the tooth: 0÷25° Tooth pitch: Profile N: 10, 12.5, 15, 20, 25 mm Profile WM: 22, 25 mm Working capacity: 65 teeth/min Size of the abrasive disc: Cut-in sharpening, profile N: ø200 x 10 x ø32, ø200 x 13 x ø32 mm Profile sharpening, profile WM: ø200 x 8 x ø32, ø200 x 10 x ø32 mm Voltage: 380 V Power of the electric motors: 0.09 and 0.37 kW Size: Without band saw holder (L x W x H): 750 x 550 x 1100 mm Iedpfexlfwpex Aiqstf With band saw holder (L x W x H): 2000 (3000) x 1000 x 1100 mm

Condition: new, Year of construction: 2025, The ZM101 is a pioneering product in our lineup, designed to sharpen sawblades with widths of up to 100 mm at a remarkable rate of 65 teeth per minute. This efficiency enables it to simultaneously service 3-4 bandsaw/sawmill machines. Equipped with an abrasive ceramic disk, the ZM101 can expertly sharpen all teeth with profiles. Its robust construction allows it to perform reliably under the most demanding conditions, making it a favorite among our customers. Additionally, its straightforward design ensures ease of use and low maintenance costs, further enhancing its appeal. Technical characteristics: Maximum length of the blade: 6000 (8000) mm Minimum width of the blade: 20 mm Maximum width of the blade: 100 mm Maximum height of the tooth: 12 mm Front angle of the tooth: 0÷25° Tooth pitch: Profile N: 10, 12.5, 15, 20, 25 mm Profile WM: 22, 25 mm Working capacity: 65 teeth/min Size of the abrasive disc: Cut-in sharpening, profile N: ø200 x 10 x ø32, ø200 x 13 x ø32 mm Profile sharpening, profile WM: ø200 x 8 x ø32, ø200 x 10 x ø32 mm Voltage: 380 V Power of the electric motors: 0.09 and 0.37 kW Size: Without band saw holder (L x W x H): 750 x 550 x 1100 mm Ijdsxligujpfx Aiqjtf With band saw holder (L x W x H): 2000 (3000) x 1000 x 1100 mm

Condition: new, functionality: fully functional, Year of construction: 2025, The VSI (Vertical Shaft Impactor) sand making machine is a type of crusher designed to accelerate the crushing of aggregate and produce cubical-shaped sand. It is widely used in the field of construction, mining, and other similar industries. Here are key features and information about VSI sand making machines: 1. Working Principle: - The VSI sand making machine operates on the principle of stone impacting stone or stone impacting iron. Material is fed into the center of the rotor, which accelerates to high speed to throw the material outward against a wear-resistant lining. 2. Rotor and Crushing Chamber: - The rotor is a crucial part of the VSI machine and is often designed with multiple pockets to facilitate material throwing and crushing. - The crushing chamber is lined with wear-resistant materials to endure the impact and abrasion during the crushing process. 3. Feedstock Control: - The feedstock (material to be crushed) can be controlled using a variable speed control system, allowing for adjustments to achieve the desired particle size. Iedpfxeq Nd U He Aiqetf 4. Material Types: - VSI machines are suitable for processing various materials, including hard and abrasive materials such as rocks, ores, and minerals. 5. Cubical Shaping: - One of the significant advantages of VSI machines is their ability to produce cubical-shaped end products, which is desirable for high-quality concrete and asphalt production. 6. Adjustable Discharge: - The machine usually has an adjustable discharge opening, allowing for customization of the final product size. 7. Sand Production: - VSI sand making machines are primarily used to produce manufactured sand (M-sand) and crushed sand, which are essential components in the construction industry. 8. Maintenance: - Regular maintenance is required to ensure optimal performance and extend the machine's lifespan. This includes checking wear parts, lubrication, and addressing any issues promptly. 9. Variations: - Different manufacturers may offer variations of VSI machines with unique features or specifications. Common variations include open rotor and closed rotor designs. 10. Environmental Considerations: - VSI sand making machines are generally considered environmentally friendly as they produce less dust and noise compared to traditional crushers. 11. Manufacturers: - Well-known manufacturers produce VSI sand making machines, and it's crucial to choose a reputable supplier with a track record of providing reliable equipment. When considering a VSI sand making machine, factors such as feed size, capacity, and the desired end product specifications should be taken into account. Additionally, check the reputation of the manufacturer, and consider customer reviews and feedback regarding the specific model you are interested in.

Condition: used, Year of construction: 2012, operating hours: 10,000 h, machine/vehicle number: TP109, Used Capping Machine AVE 6T up to 7000 bph The used capping machine AVE 6T up to 7000 bph delivers high efficiency and versatility for the bottling industry. Specifically, it handles medium to high-speed production lines, ensuring consistent and reliable results. Furthermore, the machine for Stelvin Lux uses six capping heads to provide precise and uniform operation throughout every bottling cycle. Moreover, its design maximizes production speed, enabling the handling of up to 7000 bottles per hour. This performance, in turn, supports businesses aiming to improve operational efficiency and maintain consistent product quality. The system supports aluminum screw caps of the Stelvin Lux type, measuring 30×60 mm. Consequently, this cap type creates an airtight seal, preserving product integrity and extending shelf life. Producers in the wine and beverage industry often choose this format for its reliability. Additionally, the machine rotates clockwise, aligning with standard bottling line layouts and reducing the need for costly modifications. Its compact design, moreover, integrates smoothly into existing production environments, even when space is tight.  Safety Features and User-Friendly Maintenance Itjdpfsvgvabsx Aiqsf The used capping machine AVE 6T up to 7000 bp enhances safety by incorporating advanced protective features. For instance, these systems shield operators from potential risks, reducing accidents and improving workplace safety. Furthermore, the safety mechanisms allow operators to access and maintain them quickly, ensuring consistent compliance with industry standards. The technical manuals of Stelvin Lux, in addition, offer clear instructions for installation, maintenance, and troubleshooting. These guides, therefore, enable operators to resolve issues efficiently, minimizing downtime and preserving productivity. Additionally, the machine’s modular design allows technicians to replace components quickly, streamlining maintenance tasks and lowering repair costs. Current State and Electrical Requirements The machine for Stelvin Lux currently remains in storage, ready for immediate installation on a new production line. Moreover, it operates at 400 V, with a power requirement of 3 kW and a frequency of 5 Hz. Therefore, users should verify these specifications to confirm compatibility with their existing electrical systems. Furthermore, the machine’s low energy consumption supports production facilities in reducing operational costs without compromising performance. Robust Performance and Durability of Stelvin Lux Thi machine withstands demanding production environments with its durable construction. Notably, its six capping heads ensure consistent quality in every operation, maintaining high production standards. Consequently, businesses rely on this machine to meet ambitious production goals while preserving the integrity of their products. Moreover, its precision and efficiency make it a valuable asset for any bottling operation. Conclusion of teh Used Capping Machine AVE 6T up to 7000 bph The used capping machine AVE 6T up to 7000 bph offers an effective and reliable solution for bottling operations. In particular, it boosts efficiency by combining precise capping heads, strong safety features, and simple maintenance requirements. Additionally, its seamless compatibility with standard production lines and energy-efficient operation provide ...

Condition: used, Year of construction: 2016, machine/vehicle number: ET223, Used labeling machine AXTRA 720-H9SA4 up to 8000 bph General configuration and operational performance The used labeling machine AXTRA 720-H9SA4 up to 8000 bph delivers high-performance inline labeling for glass containers and, upon request, handles PET or other packaging materials. This fully overhauled labeling machine ensures reliable and precise operation in industrial environments that demand consistent labeling quality. Specifically, the AXTRA 720-H9-SA4 model reaches speeds of up to 8000 containers per hour, depending on sample confirmation by the customer. Operating direction and functional layout The machine operates in a clockwise direction, with containers entering from the left and exiting to the right when facing the conveyor. Therefore, this configuration supports integration into most standard bottling lines used in modern production facilities. Moreover, operators can easily align the layout with existing upstream and downstream equipment. Labeling system and reel handling The used labeling machine AXTRA 720-H9SA4 up to 8000 bph includes three non-stop labeling stations designed for 400 mm reels and one standard station for 300 mm reels. In addition, each station features sensors that accurately detect opaque labels, ensuring precise placement even with low-transparency materials. As a result, the system delivers consistent labeling quality across multiple formats. The machine can work within the following measurements, with a diameter of 45÷115mm and the heigth of 180÷330mm. Precision mechanics and integrated adjustments Iodpfx Aijw Az Disqotf The machine uses electromechanical plates to guarantee high precision during operation. Furthermore, it features an electric vertical adjustment system for the upper carousel, allowing operators to perform fast format changes with minimal downtime. In fact, this automation improves productivity and reduces manual intervention. The system also includes a pre-installed optical centering system, which ensures accurate alignment on containers with printed reference marks. Consequently, the machine maintains high visual consistency during label application. Additionally, the machine supports continuous production with 9 active plates, which maintain consistent output and reduce interruptions. Compatible materials and reconfiguration options The machine currently labels glass containers, but our team can modify it to handle PET or other materials upon request. Similarly, we can adapt the system to different container shapes and label types. The existing setup applies front, back, and neck labels, while the fourth station supports additional applications, such as tamper-evident seals or promotional labeling. Therefore, users can reconfigure the machine to meet varied market or client-specific needs. Combination of new and used componen...

Condition: used, Year of construction: 2007, operating hours: 10,000 h, machine/vehicle number: ET212, Used Labeling Machine PE LABELERS Universal Master up to 7500 bph The Machine delivers advanced technology for labeling glass bottles, meeting production demands of up to 7500 bottles per hour. Furthermore, P.E. Labellers manufactured this machine in 2007, ensuring precise operations with its robust design and integrated features. Technical specifications and performance of the Used PE Labellers Labeling Machine The labeller includes eight rotating plates and five labeling stations. Specifically, three stations apply adhesive labels, while two use cold glue. The machine rotates clockwise, which streamlines bottle flow management. Additionally, its manual adjustment system for both the head and labels enables quick adaptations to different formats, thereby enhancing flexibility. Production capacity and configuration The labeller handles glass bottles with a maximum diameter of 120 cm and a standard 0.75-liter format. Consequently, it operates at a top speed of 7500 bottles per hour, making it ideal for medium-scale production lines. Moreover, the system applies labels to the front, back, and neck of each bottle, ensuring a high-quality, professional finish. Labeling method and management in the Used PE Labellers Labeling Machine This machine applies labels using adhesive and cold glue methods. Therefore, this dual approach ensures compatibility with a wide range of label designs and materials. Meanwhile, operators manually adjust the system to maintain precise control during each production batch. Current state and operational specifications The machine remains in storage; however, it is ready for immediate deployment. It has recorded 10,000 working hours, yet it still offers substantial operational capacity. Furthermore, its robust build, weighing 2250 kg, ensures stability and durability even under high-speed conditions. Electrical data and power requirements The labeller PE LABELERS Universal Master up to 7500 bph runs on 400 V, with an installed power of 5 kW and a frequency of 50 Hz. As a result, its electrical configuration meets industrial standards, ensuring efficient energy usage for extended operations. Additionally, its energy efficiency supports long-term cost savings. Applications and technical advantages The Used Labeling Machine PE LABELERS Universal Master up to 7500 bph ensures efficient and accurate label placement. Similarly, its versatile labeling stations handle bottles of various shapes and sizes without compromising output quality. Consequently, this versatility makes it a reliable option for many bottling operations. Itjdpfxjvgu Udj Aiqef Technicians and industry experts rely on this machine for its performance and customizable configurations. Above all, it represents an excellent choice for demanding bottling applications.

Condition: used, Year of construction: 2010, operating hours: 47,000 h, clamping force: 320 kN, displacement volume: 891 cm³, injection pressure: 2,420 bar, overall weight: 17,300 kg, screw conveyor diameter: 60 mm, terms of delivery: EXW (ex Works) delivery time: on request terms of payment: 100% prior to delivery Itodpfx Aiex E A Twsqsf

Condition: used, Year of construction: 2005, operating hours: 40,000 h, clamping force: 25 kN, displacement volume: 440 cm³, injection pressure: 1,550 bar, overall weight: 2,500 kg, screw conveyor diameter: 25 mm, terms of delivery: FCA Pegnitz delivery time: on request terms of payment: 100% prior to delivery Iedjynbcnopfx Aiqotf

Condition: used, Year of construction: 2022, operating hours: 2,907 h, clamping force: 320 kN, displacement volume: 1,239 cm³, injection pressure: 1,830 bar, overall weight: 14,000 kg, screw conveyor diameter: 70 mm, terms of delivery: FCA Pegnitz delivery time: on request terms of payment: 100% prior to delivery Iedoxluk Sopfx Aiqotf

Condition: used, Year of construction: 1998, operating hours: 4,500 h, clamping force: 50 kN, displacement volume: 200 cm³, injection pressure: 2,587 bar, overall weight: 2,500 kg, screw conveyor diameter: 18 mm, terms of delivery: FCA Pegnitz delivery time: on request Itsdpfx Aijwi Uzhsqjf terms of payment: 100% prior to delivery

Condition: used, Year of construction: 2007, operating hours: 70,000 h, clamping force: 120 kN, displacement volume: 154 cm³, injection pressure: 2,175 bar, overall weight: 7,300 kg, screw conveyor diameter: 35 mm, terms of delivery: EXW (ex Works) delivery time: on request terms of payment: 100% prior to delivery Manufacturer: Engel Type: VC Tech + ERC23/1-F Condition: aus laufender Produktion Operating hours: ca. 70.000 CLAMPING UNIT: - Clamping force: 120 t Öffnungsweg: 500 mm Mould installation height min.: 300 mm Mould installation height max.: - Plate dimension (h x v): 790 x 680 mm Centering (fix- movingplate): 125/125 mm INJECTION UNIT: SPE330 Screw diameter: 35 mm Injection weight in polystyrol: 141 g Stroke volume: 154 cm³ Einspritzdruck: 2.175 bar CONTROL: CC200 Screen language: DE Operating manuel: DE EQUIPMENT: - Core pulls: 2 Air valves: ja Hot runner control devices: - Robot interface: Engel integrated Ijdoqy Uklopfx Aiqetf Other equipment: inkl. ERC 23/1-F mit integrierten Ablageband (Bediengegenseite) +750mm, Nadelverschluss (hydr. + pneumat.), Schnittstelle Farbdosierer und Temperiergerät. GENERAL DATA: - Installed heating capacity: 9,2 kW Pump drive power: 15 kW Total installed power: Motor + Heizung Total weight: 7.300 kg Total size L x B x H: 4,4 x 1,4+0,8 x 2,0 m

Condition: used, Year of construction: 2005, operating hours: 81,700 h, clamping force: 45 kN, displacement volume: 69 cm³, injection pressure: 2,400 bar, overall weight: 3,300 kg, screw conveyor diameter: 25 mm, terms of delivery: EXW (ex Works) delivery time: on request terms of payment: % prior to delivery Manufacturer: Engel Type: VICTORY 200/45 Tech + er/usp Condition: aus laufender Produktion Operating hours: ca. 81.700 CLAMPING UNIT: - Clamping force: 45 t Öffnungsweg: 355 mm Mould installation height min.: 175 mm Mould installation height max.: - Tie bar distance (h x v): holmlos Plate dimension (h x v): 550 x 430 mm Centering (fix- movingplate): / mm INJECTION UNIT: IU200 Screw diameter: 25 mm Injection weight in polystyrol: 63 g Stroke volume: 69 cm³ Einspritzdruck: 2.400 bar CONTROL: CC Screen language: DE Itjdperbqtnefx Aiqof Operating manuel: DE EQUIPMENT: - Core pulls: 1 Air valves: - Hot runner control devices: - Robot interface: Angußpicker er/usp Other equipment: Nadelverschl. Hydr., Schnittstelle Dosier- und Temperiergerät GENERAL DATA: - Installed heating capacity: 6,8 kW Pump drive power: 11 kW Total installed power: Motor + Heizung Total weight: 3.300 kg Total size L x B x H: 3,3 x 1,2 x 2,2 m

Condition: used, Year of construction: 2001, operating hours: 60,790 h, clamping force: 60 kN, displacement volume: 224 cm³, injection pressure: 2,224 bar, overall weight: 3,350 kg, screw conveyor diameter: 18 mm, Min. mold height 15mm_Max. platen distance 575 + mm Payment: 100% prior to delivery Manufacturer: Battenfeld Type: BA600-50CDC Condition: überarbeitet Operating hours: 60.790 CLAMPING UNIT: - Clamping force: 60 t Öffnungsweg: 425 mm Mould installation height min.: 350 mm Itedpfsh Tk Rvox Aiqof Mould installation height max.: - Tie bar distance (h x v): 320 x 320 mm Plate dimension (h x v): 490 x 490 mm Centering (fix- movingplate): 125 / 125 mm INJECTION UNIT: IU50 Screw diameter: 18 mm Injection weight in polystyrol: 20,4 g Stroke volume: 22,4 cm³ Einspritzdruck: 2.224 bar CONTROL: Unilog 4B Screen language: DE Operating manuel: DE EQUIPMENT: - Core pulls: ! Air valves: - Hot runner control devices: - Robot interface: Euromap 12 GENERAL DATA: - Installed heating capacity: 3,6 kW Pump drive power: 11,0 kW Total installed power: Motor + Heizung Total weight: 3.350 kg Total size L x B x H: 4,0 x 1,5 x 2,1 m

Condition: used, Year of construction: 2007, operating hours: 67,000 h, clamping force: 250 kN, displacement volume: 530 cm³, injection pressure: 2,426 bar, overall weight: 14,200 kg, screw conveyor diameter: 50 mm, Payment terms: 100% net before taking delivery of the machine Isdpjwz R Iusfx Aiqetf Delivery time: by arrangement Freight basis: ex-works

Condition: excellent (used), Screening and sorting machine for bulk materials or small metal components. Very good condition – complete, equipped with original drive, control cabinet, and a set of calibration screens. • Manufacturer: SCHWANOG Günter KG, Villingen / Schwarzwald • Model: RAPID SBM 63G • Year of manufacture: 1972 • Drive: Bauknecht motor 0.55 kW, 380/220 V, 2850 rpm • Control cabinet: Carl Kurt Walther GmbH, Wuppertal • Robust steel construction, stable frame with transport wheels • Power supply: three-phase 400 V • Complete set of screening sieves in wooden frames (numbers 1–6) • Sieve mesh range: from 2 mm to 15 mm • Adjustable and exchangeable screens • Main switch, start/stop controls, and overload protection • Very good condition – dismantled from the plant, mechanically fully functional The machine is ready for operation after a basic inspection. Ideal for: metalworking shops, foundries, industrial laboratories, sorting granulates, sand, or components. Itjdsxmt Eqopfx Aiqjf

Condition: good (used), STAHL T36/4 + knife Folding Machine for Pharmaceuticals Iedpfxeywdnyj Aiqetf Made in Germany. The world’s highest-class folding machine. The machine is ready for production. Smooth feed and folding speed adjustment. 4-cassette module + cross knife + delivery. Depp pile lift feeding (high stack) This machine is ideal for folding pharmaceutical leaflets thanks to its low fold and large number of cassettes. Cassette soundproofing. Electronic counter with a batching function and adjustable time between batches. Technical specifications: Max size: 360x550mm Min size: 80x100mm Weight: 450kg 380V power supply

Condition: used, Year of construction: 2008, operating hours: 37,200 h, clamping force: 160 kN, displacement volume: 251 cm³, injection pressure: 2,500 bar, overall weight: 8,200 kg, screw conveyor diameter: 40 mm, terms of delivery: FCA Pegnitz delivery time: on request terms of payment: 100% prior to delivery Iedpfewd Udlsx Aiqjtf

Condition: used, Year of construction: 2004, Technical details: Itjdpotrbcbofx Aiqsf screw size: 105 mm injection shot weight in Polysterol: 4727 g/PS closing pressure: 2300 kN plate size: 2830 x 2400 mm opening stroke: 3700 mm daylight: 1100-1800 mm injection volume: 5195 ccm injection pressure max.: 2296 bar dimensions: 14,2 x 4,15 x 2,84 mm total wight: 143 t tie bars distance: 2000 x 1600 mm Robot system core pulls hot runner controller -     The machine is in a very good condition       -     Additionally complete cutters available. -     A conveyor belt and Robot Systems(Model 2012) *

Condition: excellent (used), Setting machine for CV saws Vollmer model AGSB up to diameter 1.100 mm Itedpsywz Dlefx Aiqof

Condition: ready for operation (used), * Brand: Metso /CFBK * Model: screening machine for wet screening Itedpfx Aieyymydoqef * Stock: 2 pieces * 1x Type: 20/60-3 * Surface : 6000 x 2000 mm - 3 decks. * incl.: springs and 22 kW E-motor. * 1x Type: 17/50-3 * Surface : 5000 x 1700 mm - 3 decks. * incl.: springs and 15 kW E-motor.

Condition: new, Year of construction: 2026, functionality: fully functional, machine/vehicle number: SF100s.01.26, screw diameter: 200 mm, total length: 3,200 mm, total height: 2,200 mm, overall weight: 400 kg, heating capacity: 10 kW (13.60 HP), pressure: 2 bar, type of input current: three-phase, input frequency: 50 Hz, input voltage: 380 V, warranty duration: 24 months, Machine for cheese streching, dozing, mozarella and other. Itjdpst I Dxwsfx Aiqof