Used Interroll Roller Conveyor - Transfer for sale (17,466)

Condition: used, Year of construction: 2007, Gebhardt roller conveyor turnout sorter switch diverter ejector 45° 1800-1220-550 Godjk Aa Efspfx Ankjub RA1148 year of construction 2007 perm. weight load: 30 kg/m dead weight: 40 kg/m roll width: 550 mm nominal/external width (NB): 610 / 1300 mm push-off element: roller adjusted headroom: 680 mm conveying speed: 0,35 m/sec. Brake for dust operation on discharge track drive of discharge mechanism: electric dimensions of the conveyed material: l x w = 600 mm x 400 mm Optional: Adjusted height on your request Electrical attachments like light barriers, barcode sensors Control/Software Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg, Germany For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, RA1188 Schulz roller curve 90° roller curve conveyor 450-390 IR1220 Manufacturer: Schulz Angle: 90° Useful width: 390 mm Nominal/outer width: 450 mm Inner radius: 1220 mm Conveying speed: v = 0.35 m/s incl. lateral guides on both sides Roll: Type: G6/50 plain bearing with conical plastic moulding Transport mask: L x W x H = 1600 x 550 x 600 Transport weight: 100 kg Scope of delivery: without supports (if required, please inquire) Optional: Supports 70,00€ per piece Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Gusdpju Rv U Rofx Ankjb Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Knapp roller conveyor 1575-660-600 RA1896 Make: Knapp Roller width (RB): 600 mm Nominal/outer width (NB): 660 mm Length: 1575 mm Roller diameter: 50 mm Roller distance: 75 mm Motor Roller conveyors: no motor Height frame: 90 mm Scope of delivery: without supports Optionally available: Supports Side guide one and both sides Condition: functional and visually good condition For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Gsdpek Abkcjfx Ankoub Your specialist and contact for intralogistics

Year of construction: 2017, condition: used, Mecalux roller conveyor roller conveyor continuous weighing scale 1050-735-650 RA1913 Make: Mecalux Roller width (RB): 650 mm, Steel rolls Nominal/outer width (NB): 735 mm length: 1050 mm Rolls diameter: 50 mm Roller distance 75 mm Overall height frame: 130 mm 2x ITOH-Deki 16936/010 24V Roller drive Conveyor speed: freely adjustable with frequency converter between 0.543 and 0.95 m/s including scale display, 6 Outputs for controling and measurement data forwarding to PLC Measurement accuracy: 50 g Scope of delivery: with supports Optionally available: Side guides on one-sided or both sides Prices net plus VAT. ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Guodpsk Abk Ssfx Ankjb Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: new, Dematic conveyor system Roller conveyors 3000/2500/2000/1500/1000-600-540 RA1938 Gravity conveyors - roller conveyors without drive Nominal/outer width (NB): 600 mm Available conveyor lengths (FL): 3000 mm, 2500 mm, 2000 mm, 1500 mm, 1000 mm Further information Manufacturer: Dematic Type: Roller conveyor Year of manufacture: unknown Condition: good (used) Roller width (RB): 540 mm Roller pitch: 62,5-125 mm variable Drive types: none or head and center drive Weight of conveyed goods: up to 30 kg Optionally available e.g: Motors with and without frequency inverter from SEW Eurodrive / Movimot Supports Gujdek Abmfjpfx Ankeb Side guides Price: net plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: new, Dematic conveyor system Roller conveyors 3000/2500/2000/1500/1000-600-540 RA1938 Gravity conveyors - roller conveyors without drive Nominal/outer width (NB): 600 mm Available conveyor lengths (FL): 3000 mm, 2500 mm, 2000 mm, 1500 mm, 1000 mm Gsdpfx Ansk Abmmjkjub Further information Manufacturer: Dematic Type: Roller conveyor Year of manufacture: unknown Condition: good (used) Roller width (RB): 540 mm Roller pitch: 62,5-125 mm variable Drive types: none or head and center drive Weight of conveyed goods: up to 30 kg Optionally available e.g: Motors with and without frequency inverter from SEW Eurodrive / Movimot Supports Side guides Price: net plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Knapp roller conveyor accumulation roller conveyor 1620-710-650 Guodpfjk Abmuox Ankjb RA1953 Brand: Knapp Running direction: both directions Roller width (RB): 650 mm Nominal/outer width (NB): 710 mm length: 1620 mm Diameter rollers: 50 mm roller distance: 90 mm Roller conveyor drive: belt, not included Stowage spaces without drive: 3 Frame height: 90 mm Conveyor speed: motor station dependent, please contact us for details Scope of delivery: without supports, without side guide, without drive station, with light barriers and accumulation mechanism Optionally available: Supports Side guide on one side and on both sides Motor station Price: plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2015, Interroll roller conveyor falling conveyor 1470-2155-490-420 RA1981 Brand: Interroll Roller width (RB): 420 mm Nominal/outer width (NB): 490 mm length: selectable between 1470 mm and 2155 mm Diameter rollers: 50 mm roller distance: 90 mm Roller conveyor drive: no drive Frame height: 115 mm Optionally available: Supports Side guide on one side and on both sides Not the right one for you? On our website you will find more articles or simply contact us. Price: plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. Gsdpfxsk Abp Te Ankoub We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2015, Interroll roller conveyor falling conveyor 720-490-420 Guedpfsk Abqijx Ankjb RA1982 Brand: Interroll Roller width (RB): 420 mm Nominal/outer width (NB): 490 mm length: 720 mm Diameter rollers: 50 mm roller distance: 90 mm Roller conveyor drive: Interroll Drum motor Conveying speed: Freely adjustable with Interrroll controller Frame height: 115 mm Optionally available: Supports Side guide on one side and on both sides Not the right one for you? On our website you will find more articles or simply contact us. Price: plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, FAS conveyor roller curve 90° 635-500 IR850 RA1990 Technical data: Condition: good (used) Engine: fully functional Angle: 90° Inner radius (IR): 850 mm Gusdpfsk Abq Rjx Anksb Nominal/outer width (NB): 635 mm roller width (NUB): 500 mm Pitch: 75-125 mm Motor Type: SEW three-phase motor Engine power: kW 0.15 S1 Hz 50 Funding speed: 0.93 m/sec Drive: Center drive usable width: 500mm ++ The rolls are higher than the frame Scope of delivery: without supports (if necessary please enquiries) Optional: supports Price: plus VAT from central warehouse Dr. Sonntag KG 97076 Wuerzburg Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Year of construction: 2007, Transnorm accumulation roller conveyor 6300-700-630 RA2074 Make: Transnorm Roller width (RB): 630 mm Nominal/outer width (NB): 700 mm Length: 6300 mm Roller diameter: 50 mm Roller distance: 76 mm Drive motor: SEW Drive Eletrical Data: 380 V, 0,37 kW Accumulating space size: 700 mm Height frame: 140 mm including Motor: 300 mm Conveyor speed: please contact us Optionally available: Supports Sideguidesfrequency converter for stepples speed controlling Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg, Germany For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Gujdpsn R Uazefx Ankjb Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Lippert conveyor roller curve 90° 980-900 IR900 RA2114 Technical data: Condition: good (used) Engine: fully functional Angle: 90° Inner radius (IR): 900 mm Nominal/outer width (NB): 980 mm roller width (NUB): 900 mm Gjdpfspdv Risx Ankjub Pitch: 75-125 mm Motor Type: SEW three-phase motor, R40DT71D4BM Engine power: kW 0.37 S1 Hz 50 Scope of delivery: without supports (if necessary please enquiries) Optional: supports Price: plus VAT from central warehouse Dr. Sonntag KG 97076 Wuerzburg Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Knapp roller conveyor accumulation roller conveyor 1530-510-450 RA1955 Guodpfxok Abmxj Ankjb Brand: Knapp Running direction: both directions Roller width (RB): 450 mm Nominal/outer width (NB): 510 mm length: 1530 mm Diameter rollers: 50 mm roller distance: 90 mm Roller conveyor drive: belt, not included Stowage spaces without drive: 2 Frame height: 90 mm Conveyor speed: motor station dependent, please contact us for details Scope of delivery: without supports, without side guide, without drive station, with light barriers and accumulation mechanism Optionally available: Supports Side guide on one side and on both sides Motor station Price: plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Dematic conveyor accumulating roller conveyors 2625-500-440 Gjdpfxsk Abrns Anksub RA1995 Accumulating roller conveyor Nominal/outer width (NB): 500 mm Available conveyor lengths (FL): 2625 mm, expandable with further pieces Further information Manufacturer: Siemens Dematic Type: Accumulation roller conveyor Accumulation size: 750 mm Year of manufacture: unknown Condition: good (used) roller width (RB): 440 mm roller pitch: 125 mm variable drive type: SEW gear motor weight of conveyed material: up to 30 kg Accumulating mechanics: Light barriers with pneumatic valve and cylinder The following accessories are optionally available e.g.: Frequency converter supports side guides Price: on request plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Soco Powered roller conveyors roller conveyor 1980-670-610 RA2021 Make: Soco Roller width (RB): 610mm, Rubber rolls Nominal/outer width (NB): 670mm length: 1980 mm Rolls diameter: 50 mm Roller distance 60790/120 mm Overall height frame: 180 mm Drive: Nerimotori Power: 0.37 kW Scope of delivery: without supports Motor segments can be combined with overdrive segments, so one motor can be used to drive several overdrive segments. Optionally available: Supports Side guides Prices net plus VAT. ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Gusdek Abuuepfx Ankob Ihr Spezialist und Ansprechpartner für Intralogistik

Year of construction: 2012, condition: used, Blume roller conveyor continuous weighing scale 1880-910-600 RA2046 Make: Blume Roller width (RB): 600 mm, Steel rolls Nominal/outer width (NB): 910 mm length: 1880 mm Rolls diameter: 50 mm Roller distance 80 mm Overall height: 900 mm 3x 24V Interroll drum motors Conveyor speed: freely adjustable with frequency converter between 0.22 and 0.65 m/s maximal load: 220 kg Electronics: 4x load cell: Interface, MB-150-38 ML-1106B Scope of delivery: with supports, USB converter Optionally available: Side guides on one-sided or both sides Other measuring device e.g. Metler Toledo IND400 Prices net plus VAT. ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics Guedpfjlw A Emox Anksb

Year of construction: 2014, condition: used, Transnorm roller conveyor ejector GF 2500-700-685 RA2212 Make: Transnorm Roller width (RB): 685 mm, Steel rolls Nominal/outer width (NB): 700 mm Rolls diameter: 50 mm length: 1800 mm, 2500 mm or 3180 mm (double) Overall height frame: 250 ejector angle: 45°, left 3 rows ejector pneumatic controllable Motor MOVI-Mot 300-500V 1,75kW Conveyor speed: freely adjustable with frequency converter Scope of delivery: without supports (please enquire if required) Prices net plus VAT. ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Guodpfxjrg Nzxs Anksb Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2001, Transnorm curved roller conveyor 180°-900-800 IR800 Gujdpfxorixkbj Ankeb RA2233 Technical data: Manufacturer: Transnorm Type: TS 2712 curved 180° Built: 2001 Condition: good (used) Engine: fully functional Angle: 180° Inner radius RN: 800 mm (nominal radius) Outer width: 900 mm Clamping length: 800 mm Engine Type: SEW Gear Motor, R17DT71D4/TH Engine Power: V 380-500, kW 0.37 Drive: chain drive Conveyor speed: contact us Weight: 260 kg Scope of delivery: without supports Optionally available: Supports Lateral guide on one and both sides Frequency inverter for stepless speed change Length adjustment (longer/shorter) Other roller conveyors/roller curves with chain transmission Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2012, TGW belt conveyor belt transfer GF 3520-490-360 RA2034 Technical data: Conveying length (NL): 3520 mm Framework width (NB): 490 mm belt width (GuB): 360 mm height (BH): 115 mm, 330 with Motor support feet: optionally available Conveying speed (v m/s): no Motor at the moment, contact us with your needed conveying speed Drive: SEW gear motor Electrical data: 50Hz V380-500, kW dipends on the Speed Year of construction: 2012 Optionally available: Frequency converter Supports Side guide one and both sides Prices net plus VAT from central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg Guedpsr Ht I Ssfx Ankeb For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2014, Transnorm roller conveyor 8250-670-655 RA2093 Make: Transnorm Roller width (RB): 655 mm Nominal/outer width (NB): 670 mm Length: 8250 mm Roller diameter: 50 mm Roller distance: 76 mm Drive motor: SEW Gearmotor R17 DT71D4/TH Eletrical Data: 380-500 V, 0,37 kW Conveying speed (v m/s): 0,3 Height frame: 140 mm including Motor: 400 mm Conveyor speed: please contact us Optionally available: Supports Sideguidesfrequency converter for stepples speed controlling Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg, Germany For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Gusdpfen U Dyqsx Ankjb Your specialist and contact for intralogistics

Condition: used, Transnorm accumulation roller conveyor 24V 2520-880-800 RA1857 Make: Transnorm Running direction: both directions Roller width (RB): 800 mm Nominal/outer width (NB): 880 mm Length: 2520 mm Roller diameter: 50 mm Roller distance: 60 mm Motor Roller conveyors: SEW E19I 09107 24V Height frame: 100 mm including two controlers Total 4 stowage spaces Conveyor speed: freely adjustable up to 1,25m/s Optionally available: Supports For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. Guedpfok Abhzex Ankob We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Knapp roller conveyor accumulation roller conveyor 1050-660-600 RA1897 Make: Knapp Running direction: both directions Roller width (RB): 600 mm Nominal/outer width (NB): 660 mm Gjdpfxjk Abkgo Anksub Length: 1050 mm Roller diameter: 50 mm Roller distance: 75 mm Motor Roller conveyors: 2x Interroll EC300 24V Accumulating stations with light barriers and own drives: 2 Height frame: 90 mm Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor Scope of delivery: without supports, Light barrier included Optionally available: Supports Side guide one and both sides Condition: functional and visually good condition For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Year of construction: 2017, condition: used, Mecalux roller conveyor roller conveyor with passage gate 24V 695+580-540-450 RA1904 Make: Mecalux Roller width (RB): 450 mm, Steel rolls Nominal/outer width (NB): 540 mm length: 695 mm + 580 mm passage Rolls diameter: 50 mm Roller distance 75 mm Overall height frame: 130 mm Height with support: 750 mm 2x ITOH-Deki 16936/010 24V Roller drive Conveyor speed: freely adjustable with frequency converter between 0.543 and 0.95 m/s Scope of delivery: with supports Optionally available: Side guide one and both sides Prices net plus VAT. ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. Gujdpfjk Abkrex Ankjb We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2017, Mecalux roller conveyor Roller conveyor 2030-540-450 RA1928 Make: Mecalux Roller width (RB): 450 mm, Steel rolls Nominal/outer width (NB): 540 mm length: 2030 mm Rolls diameter: 50 mm Roller distance 75 mm Overall height frame: 130 mm 2x ITOH-Deki 16936/010 24V Roller drive Conveyor speed: freely adjustable with frequency converter between 0.543 and 0.95 m/s Scope of delivery: without supports Optionally available: Supports Godpjk Abldjfx Ankoub Side guide one-and both sides Prices net plus VAT. ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Transnorm curved roller conveyor driven 90°-680-600 IR800 RA1242 Conveyor curves Make: Transnorm Type: TS 2712 Year of construction: 2005 Conveying speed V = 0.58 m/sec Conveyor angle: 90° Conveyor width: 600 mm Total width outside: 680 mm Inner radius: 800 mm Drive Center Gusdpok Aa N Hsfx Anksb Role: slide stored with conical plastic molding Shipping weight: 130 kg on euro pallet Transportmasze: L x B x H = 1800 x 900 x 450 mm Optionally available supports side guides Frequency converter for infinitely variable speed control Price plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik