Used Roller Conveyor for sale (18,129)

Year of construction: 2014, condition: used, Transnorm roller conveyor ejector GF 2500-700-685 RA2212 Make: Transnorm Roller width (RB): 685 mm, Steel rolls Lhsdsrg Nzuepfx Agzsr 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 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. Lhjdpjk Abqbofx Agzer 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: 2014, Transnorm alignment conveyor inclined roller conveyor 2900-700-685 RA2281 Make: Transnorm Year of manufacture: 2014 Roller width (RB): 685 mm Nominal/outer width (NB): 700 mm Length: 2900 mm Diameter rollers: 50 mm Distance between rollers: 60 mm Roller conveyor motor: SEW drive motor frame height: 100 mm Conveyor speed: contact us Angle rollers: ca. 5° Optional: supports Ljdpforu S Idjx Agzehr Side guide adapted conveyor speed range with frequency converter 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, Roller conveyor 2750/2180/1500-420-350 with chain drive RA2003 The roller conveyor with chain drive is in good condition (used) and fully functional. It has a SEW brand geared motor. The feet are not included in the scope of delivery. These are optionally available on request. Technical data: Condition: good (used) Conveyor belt length (FL): 2750/2180/1500 mm Lhedjrvmtdopfx Agzsr Nominal width (NB): 420 mm (outer width) Roller width (RB): 350 mm Usable width (NUB): 355 mm Side walls: stainless steel Castors: galvanized, diameter 50 mm Roller pitch: 65 mm (distance) Motor: SEW Eurodrive Drive: Chain drive with continuous chain, guided via tensioning device Electrical data: 380 V, 0.75 kW 3.7 A Scope of delivery: without supports and side guides (please enquire if required) Optional: Supports Side guide Frequency converter for infinitely variable speed control Availability: 3 identical tracks - individually customizable and combinable 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

Condition: used, Transnorm inclined roller conveyor 3130-1180-840 RA1865 Make: Transnorm Roller width (RB): 840 mm Nominal/outer width (NB): 1180 mm Length: 3130mm Diameter rollers: 50 mm Distance between rollers: 55 mm Roller conveyor motor: SEW drive motor frame height: 210 410 mm side guide with 200mm belt conveyor included Optionally available: Supports frequency converter for freely adjustable Conveyor speed Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, Gattingerstraße 11 B & C, 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. Ledpfek Abiisx Agzshr With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2007, Gebhardt Powered roller conveyors roller conveyor 6000-610-550 RA1909 Make: Gebhardt Roller width (RB): 550 mm, Steel rolls Nominal/outer width (NB): 610 mm length: 600 mm Rolls diameter: 50 mm Roller distance 100 mm Overall height frame: 130 mm Drive: motor type W30DT71D4/IS Power: 0.37 kW Scope of delivery: without supports 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. Lodpsk Abk Isfx Agzohr 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, Budde roller conveyors, FB = 540 mm, FL = 1.850 mm Type: roller conveyors with vertical shaft on castors, swivelling round piece Weight: 135 kg Length: FL = 1.850 mm Conveyor width: FB = 540 mm Total width: 560 mm Support roller pitch: 75 mm Conveyor speed: v = 0.5 m/s Drive: SEW Power: 0.37 kW Voltage: 230/400 V Support: Including restraints swivel castors with Stoppers OK height role: + 850 mm Transport dimensions: L x W x H = 2000 x 700 x 850 Shipping weight: 135 kg 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 Lhjdpfsk Aa Hvox Agzsr Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Knapp roller conveyor 2200-350-280 RA2326 Make: Knapp Roller width (RB): 280 mm Nominal/outer width (NB): 350 mm Length: 2200 mm, Additional extension segments available Roller diameter: 50 mm Roller distance: 110 mm Motor Roller conveyors: Leroy Somer Electrical Data 380V, 0,37kW Height frame: 76 mm, 276 with Motor Please note that the extension element is not driven without the drive station! Optionally available: Additional segments to extend length frequency converter for stepples speed control Lodpou Rii Ujfx Agzohr Supports Side guide one and both sides All prices net plus VAT from 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

Year of construction: 2017, condition: used, Mecalux transfer roller conveyor slider 90° 915-1410-870+445 RA1915 Make: Mecalux Running direction: both directions Roller width (RB): 870 to 450 mm Nominal/outer width frame (NB): 960 and 540 mm Total width: 1410 mm Length: 915 mm Roller diameter: 50 mm Roller distance: 75 mm Motor overslide: Lenze-Motor 3x 400V, 0,25 kW Ljdpfera Hp Aox Agzshr Motor Roller conveyors: 2x ITOH-Deki 16936/010 24V Height frame: 130 mm Currently set high: 725 mm Conveyor speed: freely adjustable with frequency converter between 0.543 and 0.95 m/sr Optionally available: scope of delivery: supports and Light barrier Side guide oneand 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

Year of construction: 2012, condition: used, Blume transfer roller conveyor slider 90° 1880-610-580 RA2045 Make: Running direction: both directions Roller width (RB): 580 mm Nominal/outer width frame (NB): 610 - 670 mm Length: 1880 mm Roller distance: 75-80 mm Ejector side: both sides Motor: drummotor Interroll 24V Lifter: pneumatic cylinder Currently set high: 875 mm Conveyor speed: freely adjustable with frequency converter between 0.275 and 0.667 m/s Optionally available: Light barrier scope of delivery: 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. Lhsdpfxora Hp Rs Agzjr 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: 1998, 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. Lhsdon R Uazepfx Agzjr With kind regards 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 Ljdpfx Agopdv Riezehr Angle: 90° Inner radius (IR): 900 mm Nominal/outer width (NB): 980 mm roller width (NUB): 900 mm 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, 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. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik Lhjdpfx Aju Rv U Rsgzer

Condition: used, Year of construction: 2012, TGW curves roller conveyors 45° left Order no. 150072 Item 03.0721 year of manufacture: 2012- working width: 345 mm plastic rollers working width: 400 mm metal rollers total width: 480 mm Ljdpfxsk Aa Nqj Agzohr inner radius: 1050 mm speed: 0.45 m / sec lateral guide on both sides Rollers: conical plastic molded rollers: Metal Optional: 3 supports Shipping dimensions: Lxwxh 2200 x 800 x 400 mm: 90 kg 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, Dematic roll curve 90° , curve conveyor Year of manufacture: 2007 Conveyor angle: 90° Conveyor width: 430 mm Total width outside: 500 mm Inner radius: 1270 mm Role: slide stored with conical plastic molding Support: ask without support, if needed Shipping weight: 100 kg on euro pallet Transportmasze: L x B x H = 1800 x 800 x 400 mm 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 Lhjdpfx Agsk Aa Hkezsr Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Schulz roller curve 90° roller curve conveyor 450-390 IR800 RA1185 Make: Schulz Angle: 90° Useful width: 390 mm Nominal/outer width: 450 mm Inner radius: 800 mm Conveyor speed: v = 0.35 m/s incl. lateral guides on both sides Roll type: G6/50 plain bearing with conical plastic moulding Transport dimensions: L x W x H = 1600 x 550 x 600 Transport weight: 100 kg Scope of delivery: without supports (if required, please inquire) Lhjdpfek Aa H Iox Agzer Optional: Supports 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, Schulz roller curve conveyor left with straight section and pusher 90°-450-390 IR795 +1600-450-390 RA1203 Roller curve: Manufacturer: Schulz Angle: 90° left Useful width (NUB): 390 mm Nominal/outside width (NB): 450 mm Inner radius (IR): 795 mm Straight section: Conveyor length (FL): 1600 mm Effective width (NUB): 390 mm Nominal/outer width (NB): 450 mm Rollers, galvanized Pitch: 75 mm including 90° chain pusher, chain spacing 450 mm Gear motor: 0.25 kW Conveying speed: v= 0.3 m/sec. Drive: round belt curve + straight section 2. electric drive for chain scraper Side guide: included on both sides, as illustrated Scope of delivery: without supports (please enquire if 3 supports are required) Optional: Supports Price plus VAT ex central warehouse Dr. Sonntag KG 97076 Würzburg Payment: after invoicing with advance payment Delivery time: after receipt of payment approx. 3 - 5 working days 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 Lsdpfx Agsk Aa Iwjzshr Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Knapp roller conveyor accumulation roller conveyor 1620-710-650 Lhjdpfok Abmuex Agzjr 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 Lhedpfok Abp Tox Agzsr 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 720-490-420 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 Ledok Abqijpfx Agzshr 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° 750-510-450 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. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. Lhodpfx Aok Abiusgzer 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 Lhjdpfsk Abkcox Agzor 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 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 Lsdpfx Agsk Abk Sozohr 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 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 Lodpfsk Abpzox Agzohr 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 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 Lhedpfx Aok Abq Rogzer