Used Wema Probst Cross-Processing Machine for sale (71,569)

Condition: like new (used), Vacuum filler Type: Vemag Robot HP 25 E Hopper capacity: 350 liters, single-piece Filling mechanism: bushing double screw Steplessly adjustable filling speed: 0–100% Production capacity: up to 25,000 kg/h, depending on product and fill type Control: PC graphic Portion weight: 5 to 60,000 grams Compatible for use with clipping machine Compatible with Vemag grinder 982 Rsdpfsy Hhi Hox Aizot Vacuum pump: 40 m3/h Loading device for standard bins Machine dimensions in mm: Width: 1400.0 Length: 2400.0 Height: 2180.0 Rated power: 31.0 kW Voltage: 380 V, 50 Hz Machine weight: 1450 kg

Condition: used, Year of construction: 2004, functionality: fully functional, total length: 3,900 mm, total width: 1,050 mm, total height: 1,350 mm, overall weight: 900 kg, For sale: Marel TSM – Template Slicing Machine, a professional system designed for portioning chicken breast and poultry fillets. This unit is engineered for slicing fresh, non-frozen chicken fillets and butterfly breast meat into portions with uniform shape and consistent weight. The Marel TSM uses a template-based portioning system, making it ideal for poultry processing plants and meat processing facilities requiring precise and repeatable portion control. Operation Principle: Raw material is placed in dedicated moulds (templates), where it is securely shaped by vacuum. Once positioned, a band saw slices the meat horizontally according to the template profile. Finished portions are discharged onto the product conveyor, while trimmings are transferred separately onto a dedicated conveyor. This process ensures exact cutting and exceptionally consistent production results. Technical Specifications: - Model: Marel TSM - Year of manufacture: 2004 - Capacity: approx. 35 plates/min - Power: 3 kW - Power supply: 3 x 240 VAC + PE or 3 x 400 VAC + N + PE Rodpfx Ajy Dgk Doizet - Frequency: 50/60 Hz - Air pressure: 5–6 bar - Water consumption: 6 l/min - Dimensions (LxWxH): approx. 3900 x 1050 x 1350 mm - Weight: approx. 900 kg This machine is an excellent solution for companies seeking precise and efficient portioning of chicken breasts, ensuring repeatable, high-quality products. MAREL / TSM / TSM2 / TEMPLATE SLICING MACHINE / POULTRY / BREASTS / PROFILER

Condition: good (used), Year of construction: 1994, Short/ Nest Line Capacity - 400 kg/h 1. Silo - cyclone 2. Big silo 3. small silo 4. Mixer 5. Extruder 6. Chain with dough buckets 7. Dryer 8. output transporter 9. Chain conveyor for buckets - 2 pcs 10. Elevator (at the end of the line) 11. Trans, strip of finished product Rjdpeh Dxgzsfx Aizot 12. Comand pult 13. El Cabinetsž NOTE - Action price - 30.000 EUR

Condition: repair required (used), Year of construction: 1990, functionality: not functional, machine/vehicle number: 418.364.077, drilling depth: 800 mm, feed length Z-axis: 1,000 mm, total length: 4,200 mm, total width: 2,100 mm, total height: 2,800 mm, workpiece weight (max.): 500 kg, overall weight: 7,000 kg, travel distance X-axis: 800 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 1,050 mm, spindle speed (max.): 7,000 rpm, drill diameter: 25 mm, type of input current: three-phase, number of spindles: 1, feed length W-axis: 120 mm, TBT - Deep hole drilling machine, single spindle, with CNC cross table, "x/y" axes and "W" positioning slide! Control: EST - Error in CPU rack. Machine is not operational. All actuators/hardware were functional until decommissioning. The rack error occurred during the downtime after decommissioning. Power electronics/inverter: Bosch Redpfjyz Rd Nsx Aizjt Clamping table and various accessories Dismantling preferably by the buyer; machine components (control cabinet, body, oil tank) can be placed onto machinery skates using the existing hall crane, but loading inside the hall is not possible! Dismantling and loading upon agreement. Transport exclusively by the buyer.

Condition: used, breader suitable for standard and Japanese crumbs and corn flakes all stainless steel mobile adjustable speed belt width 900 mm with extra outfeed belt Rjdpeyyxv Djfx Aizjt with air knives dimensions (l x w x h) : ± 3.200 x 1.800 x 2.200 mm 2,73 kW

Condition: excellent (used), Year of construction: 2013, functionality: fully functional, We offer the Frey Oscar 20 piston stuffer from 2013 – a compact and robust machine designed for the precise stuffing of sausages and fillings in meat processing plants, butcher shops, and small to medium-sized production facilities. This is a practical solution for the production of sausages, cold cuts, deli products, and other items requiring precise dosing and uniform filling. The Frey Oscar 20 model is equipped with a 0.75 kW motor and operates on a 400 V, 3-phase power supply. Thanks to its piston-based filling system, the machine ensures good process control, high portion repeatability, and convenient operation. This device is particularly valued where simplicity, reliability, and easy hygiene maintenance are key. The Frey Oscar 20 piston-type stuffing machine is suitable both as a standalone workstation and as an addition to an existing production line. Its robust construction and the Frey brand make it a good choice for companies looking for a used stuffing machine that will streamline production and maintain the high quality of the finished product. Technical specifications: Manufacturer: Frey Model: Oscar 20 Machine type: piston-type stuffing machine Rjdpfoy Df R Aex Aizet Year of manufacture: 2013 Power: 0.75 kW Power supply: 400 V Phases: 3 Key advantages of the Frey Oscar 20 stuffing machine: precise stuffing, compact and practical design, stable operation with low power consumption, easy operation and cleaning, ideal for the production of sausages and meat products. Availability: 2 units

Condition: excellent (used), functionality: fully functional, We offer the Vortex D2 Duo – a fully automatic cook, quench & chill machine designed for the continuous and repeatable cooking, quenching, and chilling of food products. This solution features a DUO design, in which the cooking section is mounted on a separate frame from the quenching and chilling sections, ensuring a very high level of separation between high-temperature and low-temperature processes. The Vortex D2 Duo model was developed primarily for processing short and long pasta, but thanks to its versatility, it is also ideal for products such as rice, noodles, legumes, grains, vegetables, potatoes, and seafood. As a result, the machine can operate in both pasta and ready-meal production facilities, as well as in modern convenience food plants and among producers of salads and chilled components. The Vortex D2 Duo has a capacity ranging from approximately 250 kg/h to 4000 kg/h, allowing the system to handle both medium and very high production volumes. The Vortex is equipped with a programmable Vortex water flow system, which ensures uniform cooking, cooling, and chilling of each product batch. This system minimizes clumping, product damage, and yield losses, and its highly efficient cooling typically achieves a product temperature of approximately 3°C. The Vortex D2 Duo can operate with conveyor feeding or with automatic batch loading of product into containers, which facilitates precise control of throughput and process organization. Additionally, vibrating dewatering conveyors enable operation in both batch and continuous modes, allowing the line to be easily adapted to subsequent production stages such as mixing, dosing, packaging, or final cooling. Also noteworthy are design solutions that enhance process quality and hygiene, such as hydraulic basket lifting, shell-and-tube heat exchangers, double degreasing overflows, and specially shaped water tanks. Hygienic, stainless steel construction and washdown-ready protection, which is of great importance in facilities operating under high sanitary standards. Key advantages of the Vortex D2 Duo separate frames for the cooking and cooling sections, high-quality separation of high- and low-temperature processes, ideal for short and long pasta, as well as rice, vegetables, potatoes, grains, pulses, and seafood, capacity up to 4000 kg/h depending on configuration, programmable Vortex water flow system, highly effective product cooling to approximately 3°C, capability for batch and continuous operation, hydraulic basket lifting and efficient drainage, hygienic, industrial design for continuous operation. Vortex D2 Duo is an advanced production line for manufacturers seeking consistent cooking, rapid cooling, high throughput, and excellent final product quality in a modern pasta and convenience food production process Rodpfx Aey Df Nreizet

Condition: excellent (used), We offer the STEPHAN UM 44 Universal Machine – a professional device designed for mixing, grinding, emulsifying, and homogenizing a wide range of food products. This is a proven solution for meat processing plants, dairy plants, and manufacturers of sauces, spreads, ready-to-eat meals, and the convenience sector, where multifunctionality, processing precision, and consistent final product quality are essential. The STEPHAN UM 44 model was manufactured in Germany. The machine is equipped with a 132M-8/4/2-230 motor featuring three power and speed ranges, allowing the intensity of operation to be adjusted to the type of product and stage of the production process. As a result, the unit can handle everything from gentle mixing to intensive grinding or emulsification. Simple and convenient discharge system – the product is discharged by tilting, which facilitates quick emptying of the bowl, minimizes product loss, and speeds up cleaning of the machine after operation. Technical specifications: Manufacturer: STEPHAN Type: UM 44 Machine type: universal machine / Universalmaschine Country of manufacture: Germany Power supply: 400 V Phases: 3 Frequency: 50 Hz Motor: 132M-8/4/2-230 Power: 2.2 kW / 4.0 kW / 5.5 kW Current: 9.2 A / 10.4 A / 12.7 A RPM: 695 min⁻¹ / 1445 min⁻¹ / 2900 min⁻¹ Dimensions: 800 x 600 x 1260 mm STEPHAN UM 44 is a versatile machine capable of processing a wide range of products—from meat, fillings, and pastes to processed cheese, creams, fillings, sauces, and vegetable purees. Its compact dimensions of 800 x 600 x 1260 mm make it easy to install even in limited production spaces. Rodoy Df Emjpfx Aizet Advantages of the STEPHAN UM 44 multifunctional use: mixing, grinding, emulsifying, homogenizing, three power and speed ranges, simple and convenient discharge system capability to process many types of food products, compact design, ideal for facilities seeking a versatile production machine. The STEPHAN UM 44 universal machine is an excellent choice for companies that want to increase production flexibility, improve product processing quality, and use a reliable, multifunctional industrial-grade machine.

Condition: excellent (used), Year of construction: 2008, functionality: fully functional, total length: 1,500 mm, total width: 1,300 mm, total height: 2,000 mm, overall weight: 500 kg, Meyn D40 Chicken Thigh Deboning Machine We offer a professional industrial chicken thigh deboning machine from the renowned company Meyn – one of the leading manufacturers of technology for the poultry industry. This device is designed for use in poultry processing plants, ensuring high efficiency, process repeatability, and reduced raw material loss. The stainless steel construction allows easy maintenance and meets food industry standards. Technical specifications: Manufacturer: Meyn Model: D40 Rsdpfx Aoyiubysizet Year of manufacture: 2008 Capacity: 2400 pcs/h Weight: 500 kg MEYN / BONE / CHICKEN / POULTRY / THIGH / DEBONER

Condition: new, Year of construction: 2026, functionality: fully functional, machine/vehicle number: PCM 200, total length: 1,650 mm, total width: 800 mm, total height: 1,900 mm, warranty duration: 12 months, type of input current: three-phase, power: 225 kW (305.91 HP), Hot air Pork crackling machine Here is the introduction of our pork crackling machine, as follows: Our pork crackling machine is produced from high quality AISI 304 stainless steel. The machine consists of stainless steel body, including inner drum with holes, which allow moderate distribution of hot air and even baking of the product. The operator may choose the time and frequency of the drum rotation with the help of the Frequency regulator and the German company Aditec control. Rsdpfoy Ex Eijx Aizot The drum rotation can be according to the product types and time frequency control of the motor speed. The machine is wrapped with insulation, which fully ensure the safety of the operation of the workers, prevent burns. Our Pork crackling machine save manpower, reduce production cost, has easy paddle discharge system, perfect heating system, reliable electric control system, etc. This pork crackling machine is a new type of energy-saving equipment that our company has developed for the characteristics of this type of the products. This is our pork crackling machine introduction, if you want to know more information about the pork crackling machine, feel free to contact with me.

Condition: good (used), Year of construction: 2003, 1 x Formax F6 Rjdpfxeyw Imts Aizjt Year: 2003 With tenderform and paper interleave

Condition: good (used), Double-end tenoner, edge processing machine, scoring motor, chipper motor, milling motor, spindle motor Redpfeb A Igpox Aizet -Power: 0.4 kW at 12000 rpm at 200 Hz -Power: 0.60 kW at 16500 rpm at 300 Hz -with indexable insert milling cutter -Number: 3x motors available -Price: per piece -Weight: 6 kg/piece

Condition: excellent (used), Year of construction: 2006, Used high-performance roll garbage bag manufacturing machine for sale. Includes: Roll lifter, longitudinal welder, folding unit, bottom welder, and labelling unit. The machine is in perfect operational condition and can be viewed in production. For sale with factory support and spare parts due to underutilization. Technical Specifications: - Welding width: 700 mm - Maximum bag length: 2000 mm - Minimum bag length: 380 mm - Film speed: 120 m/min - Drive: Servo - Number of tracks: 2 Additional Specifications: - Heavy-duty, automatic 2-track roll garbage bag manufacturing machine - Film thickness: - LD/LLDPE: 0.012–0.060 mm (single layer) - HDPE: 0.008–0.015 mm (single layer) - Bag width: 300–700 mm - Line speed: 100–165 m/min (depending on material, thickness, and film quality) - Finished roll size: roll width 200–300 mm; roll diameter up to 130 mm Single-line labelling unit: - Label width: 70–200 mm (1 line) - Label length: 180–350 mm - Label roll diameter: max. 250 mm Year of manufacture: April 2006 Components: 1. TAI-1300C Lifting unwinder 2. SSB-1300A Slitting knife and longitudinal welding unit 3. TA-800C1 Bag making & welding machine 4. TAF-400-2N-M 2-lane folding machine 5. TAD-700 Four-axis spindle winder Other information: Rodpfx Aisykz Ebszot - Warranty: No warranty - Current status: In production - Availability: Immediate - Power requirement: 20 kW - Price: EUR 50,000

Condition: used, functionality: fully functional, Year of construction: 2005, control type: CNC control, degree of automation: automatic, actuation type: hydraulic, pipe diameter (max.): 250 mm, pipe length (max.): 6,000 mm, power: 60 kW (81.58 HP), input voltage: 400 V, Equipment: cooling unit, emergency stop, For sale: TRUMPF TUBEMATIC Tube Laser Cutting Machine – Fully Equipped. The machine was used in industrial production and is in full working condition. Professionally dismantled and preserved in complete configuration. Scope of supply: - Bed and mechanical components - Electrical cabinets with original TRUMPF electronics - Drives, control units, power modules - Cooling system (chiller) - Cable tracks, sensors, wiring, etc. Machine technical specifications: X-axis travel: 6500 mm Y-axis travel: 200 mm Z-axis travel: 150 mm Workpiece sizes: Stock length * For manual loading: 141–6500 mm * For automatic loading: 3000–6500 mm Max. finished part length: 2000 mm Min. tube remnant length: 141 mm Wall thickness: 0.8–6.4 mm Round tube dimensions: Ø20–Ø150 mm Square profile dimensions: 20x20–120x120 mm Rectangular profile dimensions: 20x20 – max. oval Ø150 mm Workpiece weight: Max. workpiece weight: 120 kg Max. workpiece weight for unloading station: 40 kg Max. bundle weight: 4000 kg Speeds: X-axis: 100 m/min Y-axis: 40 m/min Z-axis: 40 m/min A-axis: 720 º/s Positioning accuracy1: Position deviation: ±0.2 mm Average range deviation: ±0.06 mm According to VDI / DGQ 3441, the measured length is 1 m. Processing accuracy depends on material type, its preprocessing, dimensions, and position in the working area. Control system: CNC TRUMPF – Siemens Sinumerik 840 D Total weight of the basic machine configuration: 15,460 kg Redpjyfnblofx Aizst Laser data: TRUMPF TLF CO₂ laser with high-frequency excitation – TLF 2000 Guaranteed max. laser power (programmable in 1% steps): 2000 W Pulse repetition rate: TEM00 Gas consumption: Laser gases *CO₂ – 1 l/h *N₂ – 6 l/h *He – 13 l/h Cutting gases *O₂ – depending on application *N₂ – depending on application Laser cooling: closed circuit Maximum power requirement for full system: 63 kW/h Pneumatic connection: 7–10 bar

Condition: used, Model North - South, clock wise rotation Belt width 600 mm Tiers 32 pcs. Product gap max. ± 89 mm Belt length ± 425 m Infeed height 800 mm Outfeed height 5.800 mm Cooling Freon Power 3 x 400V, 50Hz 45 kW total connected power Required cooling capacity: 150 kW Dimensions (l x w x h) : ± 5.660 x 8.080 x 6.530 mm Redpfxsyx Dm Ss Aizjt motor compressors and panels not included

Condition: excellent (used), Year of construction: 1985, Flour Mill for sale !! Manufacturer - SANGATI Diameter of roller - 250 mm Length of roller - 1000 mm Year - 1985 Condition - very good 5 Pieces on stock !!! Price - 28.000 EUR ( 5 mills ) Rjdpoy A Epcofx Aizst

Condition: used, Year of construction: 2017, The machine is designed for the automatic application of an elastic net onto food products. The netting is precut to a defined length and then automatically placed around the product. The operator loads the product manually, after which the fully automatic cycle starts. The net length can be conveniently set via the touchscreen, eliminating the need for mechanical adjustments. The machine is flexible for use with various product sizes and also allows for the use of different net types. Further advantages include user-friendly operation, an easy-to-clean design, and the option for customized configurations. Technical specifications according to the manufacturer: Manufacturer: EMSENS Model: MF01 Year of manufacture: 2017 Machine type: Netting Machine Rjdpfxsyynupj Aizst Capacity: up to 600 pieces/hour at 280 mm product length Operation: Touchscreen Configuration: electric control, pneumatics, and electrics Material: stainless steel and polymer

Condition: excellent (used), Year of construction: 2018, Stork / Marel AMF Filleting Line AMF-i Professional Chicken Breast Filleting Line – High Efficiency and Precision We offer a complete Marel / Stork AMF-i filleting line, tailored for modern poultry processing plants. This system provides automatic and precise filleting of chicken breasts while ensuring maximum throughput and superior end-product quality. Key Benefits: Intelligent Filleting (Adaptive Filleting) The system automatically adjusts its settings to the size of the raw material, guaranteeing high-quality results and optimal yield regardless of product dimensions. Rjdox Hymdjpfx Aizot High Production Efficiency Processes up to approximately 60 fillets per minute – an ideal solution for large-scale operations. Consistent Quality and Maximum Yield Losses are minimized, and efficient recovery of by-products (tendons, skin, meat) is ensured. Modular Design The line can be configured and expanded to meet individual production requirements. Process Automation Manual labor is significantly reduced, increasing consistency and process repeatability. Included Components: - Loader module - Filleting line with integrated measuring system (encoder) - Skinning module - Splitting module with automatic adjustment - Separation module - Tendon collection system - Original control cabinet Technical Specifications: Model: AMF-i Manufacturer: Stork / Marel Year of Manufacture: 2018 Capacity: up to 3,600 fillets/hour Condition: Very good / ready for operation Type: Chicken breast filleting line STORK / MAREL / AMF / FILLETING LINE / CHICKEN BREAST

Condition: ready for operation (used), Tuna can filler suitable for round, oval and rectangular cans Can diameter range round: 50 mm - 100 mm Can height range: 25mm - 62mm Capacity: up to 100 - 200 cans per minute Rodpfx Aewr D Aajizst

Condition: new, Metzger hobby | Butcher hobby Machine type: Band saw  Kolbe 32 Set-top model  Complete stainless steel body and working table  Adjustable blade tensioner  Caver safety switch  Cover safety saw  Length is adjustable thanks to the standard joinery  System cutting thickness property  Maintenance-free compact design  Dimensions: 60 x 50 x 110 cm  Electrical power: 1.1 kW  Cutting height: 32 cm Disassembled neutral work table with bottom shelf The professional disassembled neutral work table with bottom shelf is designed for restaurants, bakeries, pizzerias, and all food service establishments requiring a stable and hygienic food preparation surface. It provides a practical and functional solution for professional kitchens with limited space. Features: Professional design Stainless steel construction Disassembled structure Bottom shelf for additional storage Robust and stable build Easy maintenance Technical specifications: Dimensions: 1800x600x850mm Sind Mixer Type: S70 Complete stainless steel  Hopper capacity 70 liter  Single working shaft  Rotation of shaft in both directions  Protection cover  Capacity: 25 kg  Electric power: 2.2 kW  Voltage: 220 V / 50 Hz  Installation dimensions of machine in cm:  Width: 78  Lenght: 61  Rodsy Avglepfx Aizet Height: 74  Manual sausage stuffer Capacity: 7 liters Quality and reliable sausage stuffer It is intended for use in both households and butchers It is light and convenient to use, it takes up very little space The body of the filler, sides, screws, and nuts are made of stainless steel Dimensions: 310 × 310 × 775mm Weight: 13kg

Condition: refurbished (used), Year of construction: 2010, functionality: limited functionality, Alpina Swopper 330 litre Bowl Cutter Year 2010 Motor power 141 Kw Multispeed knife and bowl Noise cover Power up knife lid 6 x knives Unloader disc Tote bin loader Currently being refurbished New knife shaft bearings fitted Redpfx Ajykt Sgjizjt Hydraulic rams being checked and new seals fitted Main motor being rewired, machine stripped out to clean. 6 x knife speeds with 2 x reverse knife speeds 4 x bowl speeds With machine manual and drawings

Condition: refurbished (used), Ruhle frozen meat block guillotine With cross blade and vertical blades Motor gearbox driven Compact machine minimum floor space Rjdpfjyvrurox Aizot Tote bin discharge Safety interlocked tote bin switch Safety interlocked front cover In excellent working condition

Condition: ready for operation (used), functionality: fully functional, The Carnitech C400 Grinder is engineered to meet the demands of industrial operators seeking efficient and consistent grinding with high throughput. Once integrated into a processing line, the C400 allows for precise handling of raw materials while ensuring a uniform texture. Its adaptability makes it particularly suitable for food processing plants that require both reliability and consistent performance. With its robust construction, the Carnitech C400 Grinder delivers stable operation even during intensive, continuous use. It maintains a steady throughput without fluctuations in quality, simplifying production management. As a result, operators benefit from a machine capable of reducing waste and improving the uniformity of finished products. The C400 can also be seamlessly integrated into existing processing lines, whether upstream or downstream of other equipment. Furthermore, this machine stands out for its ability to process a variety of products while maintaining consistent performance. Its design also promotes easy maintenance, minimizing downtime and maximizing overall equipment availability. As a refurbished pre-owned unit, the C400 represents a cost-effective solution without compromising industrial-grade efficiency. Ultimately, the Carnitech C400 Grinder supports optimized production workflows, enhancing productivity while ensuring consistently high product quality, making it a strategic asset for demanding industrial operators. Technical specifications: Power: 110 kW Grinder for frozen meat Dimensions: 3000 mm x 1550 mm x 2660 mm (L x W x H) Screw diameter: 400 mm Redpfeyw R Elsx Aizst

Condition: ready for operation (used), functionality: fully functional, The Seydelmann MU200 B Grinder is engineered to meet the high demands of industrial food processing for both grinding and mixing applications. Once integrated into a production line, it ensures homogeneous processing of raw materials while maintaining consistent quality in the final product. It is perfectly suited for plants handling fresh, frozen, or cooked meats as well as other food preparations. Thanks to its combined grinding and mixing system, the Seydelmann MU200 B significantly improves texture consistency. The product is first mixed uniformly before being ground, optimizing ingredient distribution and minimizing quality deviations. As a result, manufacturers benefit from a more stable end product, reduced waste, and fewer rework cycles. Additionally, this configuration supports continuous flow production, which helps manage high throughput rates effectively. This machine is distinguished by its robust construction and design intended for intensive industrial use. The integration of all components in a closed stainless steel frame guarantees a high level of hygiene and simplifies cleaning. Its safety-oriented design minimizes the need for operational interventions, thereby enhancing operator safety. As a refurbished pre-owned machine, it offers an excellent compromise between industrial performance and cost control. In summary, the Seydelmann MU200 B Grinder embodies an approach focused on optimized production, where precision, reliability, and operational continuity are essential. It increases productivity while ensuring consistent quality, making it a strategic asset for food processing lines. Technical specifications: Model: MU 200 B Year: 2006 Power supply: 400 V Frequency: 50 Hz Rodpoyw Rxrsfx Aizot Motor power: 25 / 37 kW Plate diameter: 200 mm Output: up to 6,000 kg/h Hopper capacity: 300 L Mixing capacity: 150 kg Weight: 1,000 kg

Condition: excellent (used), Year of construction: 2002, functionality: fully functional, input voltage: 400 V, type of input current: three-phase, input current: 16 A, Steaker, fully operational and functional with a feed belt. We speak English, German, and ex-Yugoslav languages. Contact also possible via WhatsApp. Redpfxsyzw Ibo Aizst