Used Knapp Knapp Roller Conveyor Accumulation Roller... for sale (16,590)

Condition: used, Knapp roller conveyor accumulation roller conveyor 2690-710-650 RA1952 Brand: Knapp Running direction: both directions Roller width (RB): 650 mm Nominal/outer width (NB): 710 mm length: 2690 mm Diameter rollers: 50 mm roller distance: 90 mm Roller conveyor drive: belt, not included Stowage spaces without drive: 5 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 Bodjr Iit Tspfx Al Aodh 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, Knapp roller conveyor accumulation roller conveyor 1620-710-650 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 Bedok Abmuspfx Al Asdh 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, Knapp roller conveyor accumulation roller conveyor 1530-510-450 RA1955 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 Bedpfxok Abmxe Al Aodh Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2022, Knapp roller conveyor accumulation 12720-510-450 RA2379 Make: Knapp Running direction: both directions Roller width (RB): 450 mm Nominal/outer width (NB): 540 mm Length: 12720 mm in 7 Elements. Roller diameter: 50 mm Roller distance: 60 mm Stowage area length: 540 mm Roller conveyors Drive: 30mm Belt Height frame: 90 mm Conveyor speed: 0,5m/s Bjdjv I Hqmspfx Al Asdh Scope of delivery: without supports, Light barrier included Optionally available: Supports Side guides 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, Knapp transfer roller conveyor Toothed belt slider 90° 900-485-425 RA1876 Bdodok Abixepfx Al Ajh Make: Knapp Running direction: both directions Roller width (RB): 425 mm Nominal/outer width (NB): 485 mm Length: 900 mm Roller diameter: 50 mm Roller distance: 75 mm Motor overslide belts: SEW-Motor 3x 300-500V 0,25 kW Motor Roller conveyors: Interroll EC300 24V Height frame: 170 mm Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor Pneumatic end stop and pneumatic lifting of the transfer belt 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 Your specialist and contact for intralogistics

Condition: used, Knapp transfer roller conveyor Toothed belt slider 90° 675-690-625 RA1891 Make: Knapp Running direction: both directions Roller width (RB): 625 mm Nominal/outer width (NB): 690 mm Bdjdpfxsk Abi Rj Al Aeh Length: 675 mm Roller diameter: 50 mm Roller distance: 75 mm Motor overslide belts: SEW-Motor 3x 300-500V 0,25 kW Motor Roller conveyors: Interroll EC300 24V Height frame: 170 mm Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor Pneumatic lifting of the transfer belt Scope of delivery: without supports including end stop 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

Condition: as good as new (ex-display), Year of construction: 2015, Knapp roller conveyor accumulating sorter sorting system Fastlane 11200-375-290 RA1954 Brand: Knapp Running direction: both directions Belt spacing: 290 mm Nominal/outer width (NB): 375 mm Length: 11200 mm Frame height: 105 mm /190 mm with sorter Belt width: 35 mm Number of outfeeders: 6 pcs. Number of pneumatic accumulation places: 6 pcs. Belt conveying speed: 36 m/min Accumulation and sorting length: 600 mm. Package dimensions: min. 350 mm width and max. 650 mm length (with current position of the lifters. longer also possible with adjustment) Package properties: flat bottom is recommended or no sagging of the underside Theoretical sorting speed: 2.0 Sec/sorting, 1800 sortings per hour Electrical data: SEW geared motor 0.37 kW, 380V Scope of delivery: without supports, without side guides, with drive station, with light barriers and accumulation mechanism Optionally available: Supports Bjdpfjvzuxfex Al Ajdh Side guide on one and both sides Change of total length/position Faster motor for higher throughput rates (theoretically 3200 sorts per hour) Programming for sorting process Metal sheets to avoid hanging/sagging 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, Knapp transfer roller conveyor Toothed belt slider 90° 900-485-425 RA1893 Make: Knapp Running direction: both directions Roller width (RB): 425 mm Nominal/outer width (NB): 485 mm Length: 900 mm Roller diameter: 50 mm Roller distance: 75 mm Motor overslide belts: SEW-Motor 3x 300-500V Motor Roller conveyors: Interroll EC300 24V Height frame: 275 mm inkluding Pneumatic overslide belts and end stop Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor Optionally available: Supports Side guide one and both sides Bodek Abi Uspfx Al Ajdh 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: 2022, Knapp roller conveyor accumulation 1100-510-450 RA2382 Make: Knapp Running direction: both directions Roller width (RB): 450 mm Nominal/outer width (NB): 540 mm Length: 1100 mm Roller diameter: 50 mm Roller distance: 60 mm Stowage area length: 540 mm Height frame: 90 mm Motor Roller conveyors: Interroll EC300 24V Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor Scope of delivery: without supports, Light barrier included Bjdjv I Hq Hjpfx Al Aodh Optionally available: Supports Side guides 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, Knapp transfer roller conveyor Toothed belt slider 90° 750-485-425 RA1856 Make: Knapp Running direction: both directions Roller width (RB): 425 mm Nominal/outer width (NB): 485 mm Length: 750 mm Distance between the roller conveyors: 95 mm Distance between the overslide belts: 400 mm Roller diameter: 50 mm Roller distance: 75 mm Motor overslide belts: SEW-Motor 3x 300-500V Motor Roller conveyors: Interroll EC300 24V Height frame: 245 mm Currently set high: 620 mm Pneumatic overslide belts Pneumatic end stop Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor Optionally available: Bedpfx Aok Abhwjl Ajdh Side guide one and both sides 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, 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 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. Bdodsk Abkgjpfx Al Aeh With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2022, Knapp angled roller conveyor accumulation 2430-510-450 RA2380 Make: Knapp Running direction: both directions Roller width (RB): 450 mm Nominal/outer width (NB): 540 mm Bjdjv I Hqtepfx Al Ajdh Length: 2430 mm Roller diameter: 50 mm Roller distance: 60 mm Stowage area length: 540 mm Roller angle: 7.6° Height frame: 90 mm Motor Roller conveyors: Interroll EC300 24V 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 guides 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: 2022, Knapp roller conveyor accumulation 2160-510-450 RA2381 Make: Knapp Running direction: both directions Roller width (RB): 450 mm Nominal/outer width (NB): 540 mm Length: 2160 mm Roller diameter: 50 mm Roller distance: 60 mm Stowage area length: 540 mm Height frame: 90 mm Motor Roller conveyors: Interroll EC300 24V 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 guides 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 Bdjdpfx Aev I Hqysl Aoh Your specialist and contact for intralogistics

Condition: used, Knapp roller conveyor accumulation 24V 2700-1110-1050 RA2378 Make: Knapp Running direction: both directions Roller width (RB): 1050 mm Nominal/outer width (NB): 1110 mm Length: 2700 mm Roller diameter: 50 mm Roller distance: 60 mm Stowage area length: 540 mm Motor Roller conveyors: Interroll EC300 24V 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 Bedpfx Asv Ir S Nsl Asdh Optionally available: Supports Side guides 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, Knapp roller conveyor accumulation 24V 2700-1170-1110 RA2377 Make: Knapp Running direction: both directions Roller width (RB): 1110 mm Nominal/outer width (NB): 1170 mm Length: 2700 mm Roller diameter: 50 mm Roller distance: 60 mm Stowage area length: 540 mm Motor Roller conveyors: Interroll EC300 24V 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 Bdjdpfev Ihmpex Al Aoh Optionally available: Supports Side guides 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, Knapp transfer roller conveyor Toothed belt slider 90° 525-690-625 RA1890 Bdedpfxsr R D Acs Al Ajh Make: Knapp Running direction: both directions Roller width (RB): 625 mm Nominal/outer width (NB): 690 mm Length: 525 mm Roller diameter: 50 mm Roller distance: 75 mm Motor overslide belts: SEW-Motor 3x 300-500V 0,25 kW Motor Roller conveyors: Interroll EC300 24V Height frame: 170 mm Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor Pneumatic lifting of the transfer belt 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 Your specialist and contact for intralogistics

Condition: used, Knapp transfer roller conveyor Toothed belt slider 90° 750-485-425 RA1889 Bedpfx Alsv S Npge Aedh Make: Knapp Running direction: both directions Roller width (RB): 425 mm Nominal/outer width (NB): 485 mm Length: 750 mm Roller diameter: 50 mm Roller distance: 75 mm Motor overslide belts: SEW-Motor 3x 300-500V 0,25 kW Motor Roller conveyors: Interroll EC300 24V Height frame: 170 mm Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor Pneumatic lifting of the transfer belt Scope of delivery: without supports, End stop 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

Condition: used, Knapp transfer roller conveyor Toothed belt slider 90° 750-485-425 Bdsdpfx Asxiryljl Ajh RA1887 Make: Knapp Running direction: both directions Roller width (RB): 425 mm Nominal/outer width (NB): 485 mm Length: 750 mm Roller diameter: 50 mm Roller distance: 75 mm Motor overslide belts: SEW-Motor 3x 300-500V 0,25 kW Motor Roller conveyors: Interroll EC300 24V Height frame: 170 mm Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor Pneumatic end stop and pneumatic lifting of the transfer belt 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 Your specialist and contact for intralogistics

Condition: excellent (used), roll diameter: 50 mm, roll width: 310 mm, Knapp roller conveyor curve, 90° reversing roller row/ct2167 Manufacturer: KNAPP Track width: 315mm / total width: 385 mm Inner curve length: 1390 mm Outer curve length: 1930 mm Roller material: Steel Bdedpfx Aljwyut Es Aeh Roller diameter 50 mm Bearing steel rollers Powder-coated, perforated steel frame Guide rail, belt drive SEW Eurodrive drive. Power: 0.25kW, speed: 39m/min

Condition: good (used), Features: * Used roller conveyor * Condition: good (used) * Feet must be ordered separately * Condition: fully functional with signs of wear * Ideal for fast material transport * Professionally disassembled and packaged * 24V technology * Incl. sensors and light barriers (pre-assembled) Technical data: Dimensions of the roller conveyor Manufacturer: Interroll Type: Non-accumulation Drive: 24V technology Overall width approx.: 740 mm Conveyor width: 655 mm Roller spacing: 75 mm The system consists of 5 segments: 2 x 2,250 mm each with 3 drive rollers 2 x 540 mm each with 1 drive roller 1 x 2,775 mm each with 5 drive rollers Information about the frame: Height: 150 mm Width: 40 mm Max. weight of the conveyed goods: 50 kg Roller conveyor The roller conveyor is ideal for linking machines or workstations in the picking zone and optimizing internal processes. During transport, the roller conveyor can convey delicate and differently sized containers, boxes, or other packaging and article units to the delivery or collection point and can also be used as a connecting section before or between production and processing machines. It also enables efficient transport of parts within the company and warehouse and serves to convey significant quantities and distances. Tailor-made solutions for your intralogistics For roller conveyors, belt conveyors, inclined conveyors, or telescopic conveyors for loading and unloading your goods, we are your competent partner! We will gladly prepare an individual offer for you or advise you on design or assembly questions. Simply let us know your requirements and the local conditions. Benefit from our many years of experience and our excellent network of experts. We have already successfully implemented projects for companies in a wide range of industries, such as logistics, pharmaceuticals, trades, or the electronics industry. Bjdjff Hgtspfx Al Asdh Together, we will develop ways to optimize your processes and material flow in a cost-effective and sustainable manner. We can also offer you fully automatic sorting technology or complementary components such as picking racks or containers.

Condition: used, Year of construction: 2019, Transnorm accumulation roller conveyor 24V 2520-1430-1333 RA1858 Make: Transnorm Running direction: both directions Roller width (RB): 1333 mm Nominal/outer width (NB): 1430 mm Length: 2520 mm Roller diameter: 50 mm Roller distance: 60 mm Motor Roller conveyors: SEW E19I 09107 24V Height frame: 10 mm including two controlers Total 4 stowage spaces Conveyor speed: freely adjustable up to 1,25m/s Optionally available: Supports Bdsdpek Abh Esfx Al Ajh 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, 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. Bodpjk Abkcjfx Al Asdh With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Knapp transfer roller conveyor Toothed belt slider 90° 750-510-450 RA1875 Make: Knapp Running direction: both directions Roller width (RB): 450 mm Nominal/outer width (NB): 510 mm Length: 750 mm Roller diameter: 50 mm Roller distance: 55 & 90 mm Angle between roller conveyors: 15° Motor overslide belts: SEW-Motor 3x 300-500V Motor Roller conveyors: Interroll EC300 24V Height frame: 420 mm Conveyor speed: freely adjustable up to 1,25m/s with Interroll EC300 Motor 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. Bdedpfx Aljk Abiuo Aeh 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, Pallet roller conveyor Accumulating 7500-1000-840 RA2349 Conveyor length (FL): 7500 mm Roller width (RB): 840 mm Outer width/nominal width (NB): 1000 mm Roller spacing / pitch 175 mm Frame height: 160 mm Current storage space size approx. 900 mm 8 storage spaces Storage mechanism can be converted for other storage space sizes, e.g. 1200 mm for Euro pallets Length can be extended/reduced. Several units available single roller drive chain, so that several elements can be driven with one motor. for pallet weights up to 1000 kg Optionally available supports side guides Frequency inverter 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. Bdedpfevr Ncyjx Al Ash Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Dematic conveyor system Accumulating roller 12000-500-440 RA2345 The roller conveyor shown does not correspond exactly to the illustration in the advertisement, but is the same model and is in the same condition. Only the dimensions differ. Further information Manufacturer: Dematic Type: Accumulating roller conveyor Year of construction: unknown Bdodpfxovpu Hro Al Aeh Conveyor length (FL): 12000 mm Condition: good (used) Roller width (RB): 440 mm Nominal/outer width (NB): 500 mm Accumulation slot size: 700 mm Stowage slot control: Plug and Play, electro-pneumatic Roller pitch: 125 mm Drive types: SEW Eurodrive head drive Conveying speed: approx. 0.5 m/s Optionally available e.g: Frequency inverter for stepless speed control 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