Used Rotary Pancake Machine for sale (66,594)

Condition: ready for operation (used), Year of construction: 1995, functionality: fully functional, machine/vehicle number: 4304, rotary table diameter: 600 mm, grinding height: 450 mm, overall weight: 14,500 kg, Machine is equipped with 3 spindles, surface grinding, external grinding, bore grinding Isdpsvt A Rtofx Afheig Turret head B-axis with 1° division Belt filter system included

Condition: excellent (used), Year of construction: 2017, Traverses X Y Z: 710 x 450 x 510mm, Table size 760mm x 430mm, spindle speed 8000rpm, Iodpfx Afew U Sf Tohoig spindle motor power 20Hp, Siemens 828D Control with Shopmill, rapid feed XYZ axis 20m/min, Spindle taper BT40, 24 station ATC

Condition: used, Univ. Schwenk-Tilting-Rotary Table DECKEL Universal tool and milling machine mounting table, suitable for FP 2L, FP 3L or FP 4L Iijdpfx Asd E A I Nsfhog No. 2314 Year of manufacture: approx. 1975 Clamping surface: 1000 x 520 mm - 6 clamping slots, 16 mm, spacing 90 mm - Clamping plate can be rotated horizontally to the right and left up to 45 degrees, with a scale - Can be tilted +/- 15 degrees from/towards the machine - Can be swiveled +/- 15 degrees - Swiveling table, tilting table, angular table Permissible load max. 1000 kg Weight: 400 kg Good condition

Condition: not inspected (used), YOM 1998, Hidenhein 430 .12000/1000/1450mm. 36000 kg Isdpfx Aezfw A Defhoig

Condition: new, · Die easy to replace · Automatic feeding with double sheet detection and automatic correction · Allows plain paper, coated paper, cardboard, PE film, etc. · Mainly suitable for stickers, tags, wine labels, playing cards, small boxes, etc. · Rotary die-cutting machine with magnetic cylinder · High pile suction feeder · Touch screen · Machine with automatic stripping Isdpofg Ahuefx Afhjig · Three-cylinder system, with cover plate · Precision pressure adjustment · Wrap-around ejection system · Sensor for top reading and front registration

Year of construction: 2005, condition: used, Rotary indexing machine Kneissler KE 8-180D, manufactured in 2005. Iisdpfx Aeziz Rgofhog

Condition: good (used), Year of construction: 2003, ELB Rotary 40 NC-K rotary table surface grinding machine, table diameter 400 mm, grinding height 300 mm, year of manufacture 2003, ELN NC-K control, spindle power 4 kW, grinding wheel 300 x 50 x 76.2 mm, rotary table with magnetic chuck diameter 400 mm, full enclosure, coolant system with paper band filter, can be inspected under power, we are happy to take care of installation / training and subsequent on-site service! Financing/leasing is no problem, we are happy to provide an offer! Iodpfxsuiafuo Afhsig

Year of construction: 1964, condition: used, -WKG 429- We are offering a grinding machine from Naxos Union. This is a vertical rotary table surface grinding machine with 2 vertical grinding spindle units. Technical data: Manufacturer: Naxos Union Type: FRDA 600/1000 Iisdpfsg Nt Dbox Afhsg Year of manufacture: 1964 Rotary table: Ø 1100mm Grinding wheel Ø: Shrink-fit arbor 475/254 Grinding wheel Ø: Plain arbor 457/357 Weight: 8t Grinding method: Segment grinding Segment grinding heads: 2 pcs Accessories: Dressing device Water tank with paper band filter Marposs control

Year of construction: 1987, condition: used, Kehren rotary table, type RS 7C, used Manufacturer: Kehren, Honneff Item number: 4179 Year of manufacture: 1987 Iiodpohgmwgefx Afhjg Control system: Siemens 3G PLC: Siemens S5 Grinding motor: BBC QUB 200 Rotary table diameter: 750 mm Grinding head diameter: 460 mm Operator panel with screen Coolant system Flushing pump Coolant pump Automatic paper band filter system Control cabinet

Condition: new, functionality: fully functional, NEW Rotary table surface grinder available in the UK. With up to a 400mm grinding diameter on this rotary table, vertical spindle surface grinder from Italian manufacturer DELTA, a leading surface grinder manufacturer with over 20,000 units sold worldwide. The rotating table is controlled by asynchronous three-phase bipolar motors with 8/16 poles; thanks to these motors, the table can rotate at a speed of 40 rpm and at a rate of 30 rpm. Delta Rotary surface grinder Iiodpfx Aonziakjfhog Maximum grindable surface 400mm Ø Distance between column and wheel axis 315mm Max. distance between magnetic table and wheel 205mm Rapid feed per turn of handwheel 2mm Micrometric feed by small handle 0,01mm Size of cup wheel 200 x 80 x 78mm Ø Size of abrasive segments 50 x 20 x 90mm Motor power of the wheel (4 HP)-3 kW RPM of the wheel (50 Hz) 2840rpm/min Electropump motor power (0,08 HP)-0,06 kW Mass of the machine 680kg Rotary table surface grinder Standard Equipment Low tension electric system (24V). Cooling system with electropump Wheel-holder flange and grinding wheel. Grinding wheel guard Table guard.- Stakes key Instruction book/testing certificate Two colour painting RAL 5018-7032, bicomponent multicoat of paint CE conformity certificate with respect to the Units Directive CEE 89/392 and subsequent modifications Stock machine complete with Automatic Downfeed control

Year of construction: 2010, condition: excellent (used), machine/vehicle number: 09942, Mercerizing machine No.: 09942 Year of production: 2010 Iiedsyhn A Iopfx Afhsg Manufacturer: Goller Textilmaschinen GmbH Am Hammeranger 1 95126 Schwarzenbach/Saale GERMANY The machine is used for mercerizing cotton fabrics (knitted fabrics) with caustic soda solution in three stages: treatment with alkaline solution, washing (stabilization) and rinsing (neutralization).

Condition: reconditioned (used), Round table polishing machine make Bula, model MP81 for sale. Continuously turning machine for polishing, brushing, grinding and deburring a wide variety of workpieces. 6 workpiece holders mounted in a pitch circle of 250 mm. 1 processing station, drive power 2.2 kW, with Bula Quick Lock system of the polishing wheels. Polishing shaft diameter 25 mm The machine has been completely overhauled, machine body sandblasted, primed, repainted, new bearings, new motors, new gearbox, new V-belts, new handwheels, new pulleys, completely new control cabinet, and all drives are controlled by frequency converters. Subject to prior sale. Iodpfx Afjlccvmohsig Optionally, the system could also be supplied with a polishing paste system - liquid, consisting of 1 high-pressure dosing pistol WIDOBERG HDP-2, brackets, timer, etc. and pressure container.

Condition: used, Manufacturer : AZO Model: E450 B1 Type : Rotary sieve Application : Control and safety screening Iiedox R A U Sopfx Afhog Stainless steel Motor power : 1,3 kW ATEX classification: Exe G1-3 Te 30 Capacity: max 6000 KG / H depending on screen size Documentation available

Condition: new, Year of construction: 2025, Premade pouches packaging/filling and closing machine, rotary operation with 8 working positions. Suitable for flat pouces and doypack style pouches with/without zipper or spout. Easy operation through touch screen and SIEMENS PLC, frequency conversioin for speed adjustment, no-pouch- (or no open pouch) no-filling/seal function. Motorized bag width adjustment, oil free plastic bearings, all product or bag contacting parts are made of stainless steel (SS304). Can be used with all kinds of infeed/dosing modules (optional) to pack granulate like products, liquids, pastes, powdes, etc. Suitable for a wide range of film materials like compound/monolayer PE, PP, paper, etc. (please ask for details). Bag infeed vertically with hopper (for flat bags), optionally: horizontally infeed, especially for zipper or spout bags. Sucking unit to open all kind of bags with thinner film material. Suitable for the following bag dimensions: L(200-450)xW200-300)mm. - Technical specifications: max. speed of the machine in neutral: 30 cycles/minute; power: 380V, 4.0kW; compressed air: 0.6m³, 6bar; machine dimensions: L2500xW1800xH1800mm; weight: 1400kg. That machine/system is available in different versions for different packaging sizes and with different packaging speeds. Iodpfxev Nlmvo Afheig Please note that our new prices are often below the usual used prices. Please feel free to inquire and tell us your packaging task. - Usually 30-50 different new machines are available immediately from stock. In addition, we have very short delivery times from approx. 3 weeks for customized machines. Deviations from the sample photo are possible. - All machines are available with full warranty.

Year of construction: 2025, condition: new, Premade pouches packaging/filling and closing machine, rotary operation with 6 working positions. Suitable for flat pouches and doypack style pouches. Easy operation through touch screen and SIEMENS PLC, frequency conversioin for speed adjustment, no-pouch- (or no open pouch) no-filling/seal function. Motorized bag width adjustment, oil free plastic bearings, all product or bag contacting parts are made of stainless steel (SS304). Can be used with all kinds of infeed/dosing modules (optional) to pack granulate like products, liquids, pastes, powdes, etc. Suitable for a wide range of film materials like compound/monolayer PE, PP, paper, etc. (please ask for details). Bag infeed vertically with hopper (for flat bags), optionally: horizontally infeed. Sucking unit to open all kind of bags with thinner film material. Suitable for the following bag dimensions: L(200-450)xW(200-300)mm. - Technical specifications: max. speed of the machine in neutral: 30 cycles/minute; power: 380V, 3.5kW; compressed air: 0.6m³, 6bar; machine dimensions: L2500xW1800xH1800mm; weight: 1200kg. Iodjv Nlmiopfx Afhjig That machine/system is available in different versions for different packaging sizes and with different packaging speeds. Please note that our new prices are often below the usual used prices. Please feel free to inquire and tell us your packaging task. - Usually 30-50 different new machines are available immediately from stock. In addition, we have very short delivery times from approx. 3 weeks for customized machines. Deviations from the sample photo are possible. - All machines are available with full warranty.

Condition: new, Year of construction: 2025, Filling and capping machine for filling liquids and pastes into stand-up pouches (doypacks) with spout. Suitable for premade doypacks with a corner spout or a spout on top. The rotary machine has filling units equipped with two filling heads each for liquid filling and two heads each for positioning and closing the spout lids. Additional equipment: feeding lift for the spout caps, external module for CIP cleaning, air cleaning system for inner area of the machine. Relevant electronic components from Schneider and Omron, PLC and touch screen from SIEMENS, pneumatic components from AIRTAC. - Specifications: Filling range: max. 3000ml; number of filling heads: 6; max. number of machine cycles in neutral: 26 cycles/min; current: 220/380V, 2.5kW; air pressure and consumption: 5-7bar, 0.7m³; machine dimensions LxWxH: 2600x1630x1900mm; weight: 1600kg. Please note that our new prices are often below the usual used prices. Please feel free to inquire and tell us your packaging task. - Usually 30-50 different new machines are available immediately from stock. In addition, we have very short delivery times from approx. 3 weeks for customized machines. Deviations from the sample photo are possible. - All machines are available with full warranty. Iiedsv Nlngepfx Afheg

Condition: new, Year of construction: 2025, Filling and capping machine for filling liquids and pastes into stand-up pouches (doypacks) with spout. The rotary machine is especially used for filling all kinds of liquids such as water, juices, sauces such as soy sauce, salad dressings, tomato sauce or liquids with high viscosity such as barbecue sauces/BBQ sauces, honey, up to pasty products such as peanut butter, fruit jam, nut nougat cream etc. The filling and capping machine is equipped with six filling heads for liquid filling and with six heads each for positioning and capping the spout lids. The production process is fully automated from bag feeding, filling, cleaning of the nozzles, feeding the spout lids via lift and capping them, to the output of the final products. To ensure the exact filling volume, the liquid level is constantly monitored. PLC control, touch screen operating monitor (menu available in different languages e.g. English, German etc.). Suitable for premade doypacks with a corner spout or a spout on top. - Specifications: Filling range: max. 150ml (can be customized); number of filling heads: 6; max. number of machine cycles in neutral: 18 cycles/min (corresponds to max. 108 bags/min); current: 220/380V, 3P, 1.5kW; air pressure and consumption: 5-7bar, 0.65m³; liquid contact parts are made of AISI 316 stainless steel, non-contact parts are made of AISI 304 stainless steel; machine dimensions LxWxH: 1800x1150x1950mm; weight: 1000kg. Please note that our new prices are often below the usual used prices. Please feel free to inquire and tell us your packaging task. - Usually 30-50 different new machines are available immediately from stock. In addition, we have very short delivery times from approx. 3 weeks for customized machines. Deviations from the sample photo are possible. - All machines are available with full warranty. Iodpfsv Nlm Njx Afheig

Condition: new, Year of construction: 2025, Filling and capping machine for filling liquids and pastes into stand-up pouches (doypacks) with spout. The rotary machine is especially used for filling all kinds of liquids such as water, juices, sauces such as soy sauce, salad dressings, tomato sauce or liquids with high viscosity such as barbecue sauces/BBQ sauces, honey, up to pasty products such as peanut butter, fruit jam, nut nougat cream etc. The filling and capping machine is equipped with six filling heads for liquid filling and with six heads each for positioning and capping the spout caps. The production process is fully automated from bag feeding, filling, cleaning the spouts, feeding the spout caps via lift and capping them, to the output of the final products. To ensure the exact filling volume, the liquid level is constantly monitored. PLC control, touch screen operating monitor (menu available in different languages e.g. English, German etc.). CIP system and UV sterilization lamp included. Suitable for pre-made doypacks with corner spout or spout on top. - Specifications: Spout design: double ring spout; filling range: 50 - 500ml (adjustable); number of filling heads: 6; max. number of machine cycles in neutral: 16 cycles/min (corresponds to max. 100 bags/min); current: 220/380V, 3-phase, 2.5kW; air pressure and consumption: 6-7bar, 0.7m³/min; liquid contact parts are made of SUS 316 stainless steel, non-contact parts are made of SUS 304 stainless steel; machine dimensions without bag feeding belt: L2600xW1830xH2050mm; bag feeding belt dimensions: L2000xW400xH1500mm; weight: 1700kg. Please note that our new prices are often below the usual used prices. Please feel free to inquire and tell us your packaging task. - Usually 30-50 different new machines are available immediately from stock. In addition, we have very short delivery times from approx. 3 weeks for customized machines. Deviations from the sample photo are possible. - All machines are available with full warranty. Ijdpfx Afev Nlnashoig

Condition: new, Year of construction: 2025, Premade pouches packaging/filling and closing machine, rotary operation with 6 working positions. Suitable for flat pouches and doypack style pouches. Easy operation through touch screen and SIEMENS PLC, frequency conversioin for speed adjustment, no-pouch- (or no open pouch) no-filling/seal function. Motorized bag width adjustment, oil free plastic bearings, all product or bag contacting parts are made of stainless steel (SS304). Can be used with all kinds of infeed/dosing modules (optional) to pack granulate like products, liquids, pastes, powdes, etc. Suitable for a wide range of film materials like compound/monolayer PE, PP, paper, etc. (please ask for details). Bag infeed vertically with hopper (for flat bags), optionally: horizontally infeed. Sucking unit to open all kind of bags with thinner film material. Suitable for the following bag dimensions: L(100-350)xW(100-210)mm. - Technical specifications: max. speed of the machine in neutral: 45 cycles/minute; power: 380V, 2.5kW; compressed air: 0.6m³, 6bar; machine dimensions: L2214xW1850xH1640mm; weight: 1000kg. Isdpfxjv Nlmco Afhsig That machine/system is available in different versions for different packaging sizes and with different packaging speeds. Please note that our new prices are often below the usual used prices. Please feel free to inquire and tell us your packaging task. - Usually 30-50 different new machines are available immediately from stock. In addition, we have very short delivery times from approx. 3 weeks for customized machines. Deviations from the sample photo are possible. - All machines are available with full warranty.

Year of construction: 2025, condition: new, Premade pouches packaging/filling and closing machine, rotary operation with 8 working positions. Suitable for flat pouches and doypack style pouches with/without zipper or spout. Easy operation through touch screen and SIEMENS PLC, frequency conversioin for speed adjustment, no-pouch- (or no open pouch) no-filling/seal function. Motorized bag width adjustment, oil free plastic bearings, all product or bag contacting parts are made of stainless steel (SS304). Can be used with all kinds of infeed/dosing modules (optional) to pack granulate like products, liquids, pastes, powdes, etc. Suitable for a wide range of film materials like compound/monolayer PE, PP, paper, etc. (please ask for details). Bag infeed vertically with hopper (for flat bags), optionally: horizontally infeed, especially for zipper or spout bags. Sucking unit to open all kind of bags with thinner film material. Suitable for the following bag dimensions: L(100-350)xW100-210)mm. - Technical specifications: max. speed of the machine in neutral: 45 cycles/minute; power: 380V, 3.0kW; compressed air: 0.6m³, 6bar; machine dimensions: L2500xW1800xH1800mm; weight: 1100kg. That machine/system is available in different versions for different packaging sizes and with different packaging speeds. Please note that our new prices are often below the usual used prices. Please feel free to inquire and tell us your packaging task. - Usually 30-50 different new machines are available immediately from stock. In addition, we have very short delivery times from approx. 3 weeks for customized machines. Deviations from the sample photo are possible. - All machines are available with full warranty. Iedpfx Afov Nlmpshoig

Year of construction: 2025, condition: new, Filling and capping machine for filling liquids and pastes into stand-up pouches (doypacks) with spout. Suitable for premade doypacks with a corner spout or a spout on top. The rotary machine has two filling heads for liquid filling and two heads each for positioning and closing the spout lids. Additional equipment: feeding lift for the spout caps, external module for CIP cleaning, air cleaning system for inner area of the machine. Relevant electronic components from Schneider and Omron, PLC and touch screen from SIEMENS, pneumatic components from AIRTAC. - Specifications: Filling range: max. 500ml; number of filling heads: 2; max. number of machine cycles in neutral: 16 cycles/min (corresponds to max. 33 bags/min); current: 220V, 1.5kW; air pressure and consumption: 5-7bar, 0.65m³; machine dimensions LxWxH: 1990x1300x1980mm; weight: 1500kg. Iedpsv Nlm Ajfx Afheig Please note that our new prices are often below the usual used prices. Please feel free to inquire and tell us your packaging task. - Usually 30-50 different new machines are available immediately from stock. In addition, we have very short delivery times from approx. 3 weeks for customized machines. Deviations from the sample photo are possible. - All machines are available with full warranty.

Condition: used, Year of construction: 2015, XYZ 2-OP Vertical Machining Centre ProtoTRAK TMX Control (2015) Year of Manufacture: 2015 Spindle Speeds to 6,000rpm Spindle Taper BT30 Table Size 457 x 381mm Table Travels 355 x 305 x 455mm (XYZ) 6 Station ATC Rapid Traveres 15m/min Footprint 760 x 1,220 x 2500mm Weight 1100kgs Isdpfx Aeya H Nkofhoig 415V Electrics Air Require for ATC For sale with *Jet Machinery Ltd* Jet Machinery Stock No: #79155 Machine Serial Number: SOP02060 Cost: £17,950.00 + VAT Whilst every effort has been made to ensure that the above information is accurate it is not guaranteed. We advise prospective purchasers to check any vital details. Health and Safety At Work Act 1974: It is not reasonably practical for ourselves as suppliers to ensure that for your application the goods comply with requirements of the Act with respect to guarding etc. Prospective purchasers should ensure that a guarding specialist inspect the goods prior to use.

Condition: new, Year of construction: 2022, functionality: fully functional, Wema Probst RHM 250 II-H milling machine NEW - Diameters from 100mm to 250mm Ijdsubbryepfx Afhjig - Electronic feed control - 2 milling heads - Head 1 = diameter 150-300mm - Head 2 = diameter 100-250mm - feed speed 6-34m/min - complete electrical cabinet + control panel Wema Probst RHM 250 II-H milling machine NEW - Diameters from 100mm to 250mm - Electronic feed control - 2 milling heads - Head 1 = diameter 150-300mm - Head 2 = diameter 100-250mm - feed speed 6-34m/min - complete electrical cabinet + control panel

Condition: excellent (used), Year of construction: 2023, functionality: fully functional, Equipment: documentation/manual, Professional Spiral Duct Forming Machine – Ø80–1600 mm We are offering for sale a complete industrial machine for the production of round spiral ducts (SPIRO ducts) for HVAC, ventilation and dust extraction systems. Isdpfxszt Ni Ee Afhoig We are the first owner. The machine was purchased directly from the manufacturer, professionally commissioned, configured and fine-tuned for production. It has only been used occasionally for our own production requirements and has never been operated in continuous or multi-shift mass production. The machine is fully operational, properly adjusted and ready for production. It is currently connected and can be demonstrated under actual production conditions, allowing the buyer to inspect the complete process and the quality of finished ducts before purchase. Key Features * working diameter range: Ø80–1600 mm * production speed: up to 60 m/min * installed power: 11.25 kW * galvanized steel: 0.4–1.2 mm * stainless steel: 0.4–0.7 mm * aluminium: 0.4–1.3 mm * pneumatic sheet metal strip decoiler * touchscreen control panel * automatic lubrication system * automatic forming angle adjustment * automatic rotary cutting * automatic fault detection * smooth ducts or single/double reinforcing beads * external spiral lock seam * machine weight: approx. 2,900 kg 39 Forming Heads Included The machine comes with an extensive set of 39 forming heads covering 22 diameters: Ø80 (1), Ø100 (2), Ø125 (3), Ø160 (3), Ø200 (3), Ø250 (3), Ø315 (3), Ø355 (2), Ø400 (2), Ø450 (2), Ø500 (2), Ø560 (2), Ø630 (2), Ø710 (1), Ø800 (1), Ø900 (1), Ø1000 (1), Ø1120 (1), Ø1250 (1), Ø1400 (1), Ø1500 (1), Ø1600 (1). The set therefore covers the full working range from Ø80 to Ø1600 mm, with additional heads for the most commonly produced diameters. Spare Parts Package A comprehensive package of spare and wear parts is included, such as forming and guiding components, lock-seaming rollers, pneumatic components, cutting knives/rotary cutting components and decoiler braking parts. This provides an important operational reserve and helps minimise downtime without having to immediately source essential parts internationally. Production-Ready + Training The buyer receives a fully configured and proven production machine, not an uncommissioned unit requiring extensive setup and adjustment. We provide on-site commissioning assistance and operator training at the buyer’s facility, including machine operation, forming head replacement, adjustment for different diameters and sheet thicknesses, maintenance and trial production. The machine can be inspected and demonstrated during actual spiral duct production before purchase. Approximately 100 steel stacking racks (Maurack type) for storing and transporting finished ducts are also available and can be purchased together with the machine. The machine is located in Poland. Transport can be arranged individually. Price: upon request / subject to negotiation. For further information, photos, videos or to arrange a live machine demonstration, please contact us directly.

Condition: ready for operation (used), Year of construction: 2001, operating hours: 29,173 h, functionality: fully functional, machine/vehicle number: 11045522744, travel distance X-axis: 500 mm, travel distance Y-axis: 420 mm, travel distance Z-axis: 380 mm, controller model: HEIDENHAIN MILLPLUS, spindle speed (max.): 18,000 rpm, No minimum price – guaranteed sale to the highest bidder! Submitting a bid commits you to collecting the item promptly between October 7, 2026, and October 14, 2026! TECHNICAL DETAILS Travel range X-axis: 500 mm Travel range Y-axis: 420 mm Travel range Z-axis: 380 mm Rapid traverse rate X-axis: 50 m/min Rapid traverse rate Y-axis: 50 m/min Rapid traverse rate Z-axis: 50 m/min Feed rate X-axis: 20 m/min Feed rate Y-axis: 20 m/min Feed rate Z-axis: 20 m/min Spindle speed: 18,000 rpm Torque: 1,100 Nm Tool holder: SK 40 Holder diameter: 40 mm Number of tool positions: 32 Max. tool length from spindle nose: 280 mm Max. tool weight with automatic tool changer: 6 kg Iisdpfx Afozu Ixnjhsg Max. total weight of tools in magazine: 90 kg Table length: 500 mm Table width: 380 mm Max. workpiece weight: 330 kg Clamping area: 500 × 380 mm Distance between T-slots: 63 mm T-slot width: 4 H7 Centering bore diameter: 30 H6 Max. table rotation speed: 33 rpm Max. swivel torque: 1,400 Nm Swivel speed: 26 rpm Linear scale resolution X/Y/Z: 0.001 mm Positioning tolerance: 0.010 mm MACHINE DETAILS Control system: HEIDENHAIN MILLPLUS Rated apparent power: 40 kVA Input voltage: 400 V Input frequency: 50 Hz Input current: 80 A Dimensions and weight Dimensions (L x W x H): 3,500 x 2,400 x 2,500 mm Total weight: 7,000 kg Operating hours Counter 1: 80,842 h Counter 2: 29,173 h EQUIPMENT NC rotary table with swivel axis