Kullanılmış Diğer Testereler satın al (3.970)

Durum: yeni, Üretim yılı: 2025, Dimensions (L x W x H): 4500 x 1200 x 1200 mm Weight: 1,500 kg Total power requirement: 8 kW Optimizing cross-cut saw WS1 - Cutting height Position A: 130x175, 120x200, 100x230, 85x250, 50x280, 15x305 mm Position B: 100x290, 80x315, 50x340, 30x355, 15x365 mm - Cutting speed: up to 100 cycles/min - Feed speed: 120 m/min - Motor power: 7.5 kW - Voltage: 400 V / 50 Hz - Saw blade diameter: 500 mm, bore 30 mm - Speed: 3,600 rpm - Min. workpiece length: 550 mm Rsdpovz Hz Eefx Ahvow - Min. workpiece width: 40 mm - Min. workpiece height: 15 mm - Cutting accuracy: +/- 0.8 mm - Infeed roller conveyor right side 2,000 mm with double marking station - Outfeed table left side 1,000 mm - Extraction nozzle diameter: 200 mm - Air consumption: 20 NL/cycle - Operating pressure: 6 bar - Working height: 930 mm - PLC control with 7" color touch screen for easy operation + fixed length cross-cut mode + sequential cross-cut mode (storage for 10 different dimensions) + cross-cutting on marked chalk lines + cross-cutting fixed lengths and on marked chalk lines - CE conformity - Dimensions: L=4500, W=1200, H=1200 mm - Weight: 1,500 kg

Durum: yeni, Üretim yılı: 2025, Dimensions (LxWxH): 0 x 0 x 0 mm Weight: 900 kg Total power requirement: 5 kW Fully automatic optimizing cross-cut saw with full optimization, TR-450 MATRIX-6000 - Motor drive power: 4.0 kW - Saw blade diameter: 450 x 30 mm, Z=72 - Cutting capacity according to cutting diagram - Cutting capacity: 95 x 265 mm - Cutting capacity: 85 x 277 mm - Cutting capacity: 60 x 290 mm - Cutting capacity: 40 x 310 mm - Cutting capacity: 25 x 330 mm - Cutting cycle: 4 seconds - Pneumatic cutting unit - Inclined worktable, 8° - Minimum workpiece thickness: 10 mm - Safety cover over cutting unit - CE compliant - Weight: 900 kg Electrical connection values: - Supply voltage: 400 V / 50 Hz - Control voltage: 24 V - Extraction connection: 2 x 100 mm diameter - Extraction capacity: 2,400 m³/h - Air consumption per cycle: 6 Nl - Extraction air speed at center of connection: approx. 25-35 m/s Electronically controlled pusher: - Feed length: 6,000 mm Rjdpjv A Hr Tsfx Ahvsw - Pusher speed: 90 m/min - Drive via brushless servomotor - Feed system with precision rack and pinion and measurement via servomotor - Pneumatic lift at end of cycle and top return - Photoelectric sensor for workpiece length measurement - Photoelectric sensor for defect detection - Marking with fluorescent chalk - Worktable incline: 8° - Positioning tolerance: +/- 0.4 mm Control system: - High-resolution 12" touchscreen monitor (800 x 600 pixels) - Creation of cutlists directly on the machine controller - Up to 1,000 cutlists with 10 sizes each - A single list with 10,000 sequential sizes - 3 optimization options (maximum length, sequence, and workpiece sequence) - 3 optimization options (volume, minimal waste, and priority) - Standard USB and Ethernet ports - Includes OPTI function for automatic measurement of workpieces to be cut. Ideal solution for processing material of variable lengths, with single or bundle feeding. 6 optimization options (maximum length, sequence, workpiece sequence, volume, minimal waste, and priority) - Includes OPTI PLUS function for mark detection, enabling full optimization and removal of knots and defects. - Marking with chalk Options: - Pneumatic side clamp: €850.00 - Cutlist creation software for PC: €360.00 - Outfeed table: €360.00/m

Durum: yeni, Üretim yılı: 2025, Dimensions (L/W/H): 0 x 0 x 0 mm Weight: 1,500 kg Total power requirement: 10.2 kW Automatic optimizing cross-cut saw with full optimization TR-600 MATRIX-6000 - Motor drive power: 9.2 kW - Saw blade diameter: 600 x 30 mm, Z=60 - Cutting capacity according to cutting diagram - Cutting capacity: 150 x 365 mm - Cutting capacity: 130 x 440 mm - Cutting capacity: 100 x 530 mm - Cutting capacity: 60 x 580 mm - Cutting capacity: 30 x 610 mm - Cutting cycle: 6 seconds - Hydraulic cross-cutting unit - Inclined worktable by 8° - Minimum workpiece thickness: 10 mm - Safety cover over cross-cutting unit - CE standard - Weight: 1,500 kg Connection data: - Supply voltage: 400 V / 50 Hz - Control voltage: 24 V - Extraction ports: 4 x 100 mm diameter - Extraction capacity: 2,400 m³/h - Air speed at extraction port center: approx. 25-35 m/s Electronically controlled pusher: Rjdpsv A Htksfx Ahvjw - Feed length: 6,000 mm - Maximum pusher speed: 90 m/min - Drive via brushless servo motor - Feed system with precision racks and measurement by servo motor - Pneumatic lifting of the pusher at cycle end and overhead return - Photocell for workpiece length measurement - Photocell for defect detection - Marking with fluorescent chalk - Worktable inclination: 8° - Positioning tolerance: +/- 0.4 mm Control: - High-resolution 12" touchscreen monitor (800 x 600 pixels) - Creation of cutting lists directly in the machine control - Up to 1,000 cutting lists with 10 dimensions each - Single list with up to 10,000 dimensions in sequence - 3 optimization options (maximum length, sequence, and workpiece sequence) - 3 optimization options (volume, minimal offcut, and priority) - Standard USB and Ethernet ports - Including OPTI function for automatic measurement of the workpiece to be cut. Optimal solution for processing material with variable lengths, either single or bundle feed - 6 optimization options (maximum length, sequence, workpiece sequence, volume, minimal offcut, and priority) - Including OPTI PLUS function for mark detection, which ensures full optimization and removal of knots and defects. - Marking with chalk Options: - Pneumatic side clamp: €850.00 - Creation of cutting lists on PC: €360.00 - Outfeed table: €360.00/m

Durum: yeni, Üretim yılı: 2025, Dimensions (L/W/H): 0 x 0 x 0 mm Weight: 1000 kg Total power requirement: 8.5 kW Fully automatic optimizing cross-cut saw TR-500 MATRIX-6000 (with full optimization) - Motor power: 7.5 kW - Saw blade diameter: 500 x 30 mm Z=144 - Cutting capacity as per cutting diagram - Cutting capacity: 135 x 280 mm - Cutting capacity: 125 x 295 mm - Cutting capacity: 95 x 325 mm - Cutting capacity: 80 x 340 mm - Cutting capacity: 55 x 360 mm - Cutting cycle: 4 seconds - Pneumatic cross-cutting unit Redpfev A Htdex Ahvsw - 8° inclined work table - Minimum workpiece thickness: 10 mm - Safety guard over cross-cutting unit - CE-compliant - Weight: 1000 kg Electrical connections: - Supply voltage: 400 V / 50 Hz - Control voltage: 24 V - Extraction port: 4 x 100 mm diameter - Extraction capacity: 2400 m3/h - Air consumption per cycle: 4 Nl - Air velocity at center of extraction port: approx. 25–35 m/s Electronically controlled pusher: - Infeed length: 6000 mm - Pusher speed: 90 m/min - Driven by brushless servomotor - Feed system with precision rack and pinion, position feedback via servomotor - Pneumatic pusher lift at end of cycle, top return - Photocell for workpiece length measurement - Photocell for defect detection – Marking with fluorescent chalk - 8° working surface inclination - Positioning tolerance: +/- 0.4 mm Control system: - High-resolution 12" touchscreen monitor (800 x 600 pixels) - Cut list creation directly in the machine's control - Up to 1000 cut lists with 10 sizes each - Single list with up to 10,000 sizes in sequence - 3 optimization options (maximum length, sequence, workpiece sequence) - 3 optimization options (volume, minimum waste, priority) - Standard USB and Ethernet ports - Includes OPTI function for automatic measurement of workpieces to be cut. Optimal solution for processing material of variable lengths, with single or bundled feeding - 6 optimization options (maximum length, sequence, workpiece sequence, volume, minimum waste, priority) - Includes OPTI PLUS function for defect marking detection, ensuring full optimization and removal of knots and defects - Marking with chalk Options: - Pneumatic side clamp: €850.00 - Cut list creation on PC: €360.00 - Outfeed table: €360.00/m

Üretim yılı: 1992, durum: iyi (kullanılmış), Konsantrik çalışmada kesme şerit testeresi için işleme Rodpfxsfd Ibvj Ahvow

Durum: yeni, Capacity: Ø 30 - 160 mm Saw Body: 30° Linear Slide Saw Motor: 15 kW Hydraulic Motor: 3 kW Saw Feed Motor: 1.5 kW Siemens Saw Speed: 30-120 rpm Saw Blade Diameter: Ø480 x 2.25 x 2.7 x 50 mm Control: Siemens Hydraulics: Rexroth Valve Coolant: Atomized cutting oil Machine weight: approx. 5,550 kg Space requirement: approx. 3,200 x 7,600 mm For price information, please use the contact form. GERD WOLFF GLS-160 High-Performance Circular Saw (Fully Automated) Discover the next generation of high-performance metal circular saws, uniting precision and efficiency with German quality craftsmanship. Our high-performance metal circular sawing machines set new benchmarks in metalworking, thanks to their innovative technology, which allows for precise and effortless machining of all types of steel. From 10 mm up to an impressive 250 mm steel diameter, our machines cut within seconds with the utmost accuracy. The core of these machines lies in their automatic functionalities, combined with an advanced ball screw drive and an automatic material feed system. This combination not only ensures maximum precision but also impressive speed. A Siemens motor and a Siemens PLC screen guarantee reliable performance and easy operation. Rjdpsy Apluefx Ahvjw Furthermore, our high-performance metal sawing machines feature a specialized system for fast and convenient saw blade changes. The hydraulic material clamping ensures a secure fixation of the workpiece during the cutting process. In addition, a programmable mist lubricating system is integrated for optimal lubrication and cooling of the saw blade, significantly extending tool life. Thanks to our servo and drive technology, you maintain full control over your production processes, allowing you to optimize output and meet the highest quality standards. Choose our high-performance metal circular saws and experience the future of metalworking – precise, efficient, and reliable.

Durum: mükemmel (kullanılmış), Multisaw scm m3 - genişlik 300 mm - kesme yüksekliği 120 mm Rsdpsi Ewnaefx Ahvjw - Motor gücü 37 kW - Ağırlık 1800 kg - Yapım yılı 2003 - maks. eleman genişliği 100 cm - min. eleman uzunluğu 40 cm - besleme hızının kademesiz olarak ayarlanması - üç sıralı kontrol mandalları - mil çapı 50 mm - kovan çapı 70 mm - ara parçalar ve 5 testere bıçağı ile donatılmış manşon 350 mm - bıçak çapı 200 ila 350 mm arasında - otomatik merkezleme yağlama - dört üst basınç silindiri - bir anahtar seti Makine ve zincir bandı çok iyi durumda.

Durum: mükemmel (kullanılmış), MRS 350 çok amaçlı testere - besleme bandı genişliği 35cm - maks. kesme yüksekliği 13cm - ana motor 37kW - sonsuz değişken besleme hızı ayarı - maks. testere boyutu 400 mm Redpep Audxjfx Ahvsw

Durum: yeni, Üretim yılı: 2025, Yuvarlak kesme aralığı: 20 - 100 mm Kare kesme aralığı (G x Y): 20 x 70 mm En kısa kesme uzunluğu: 5 mm Otomatik çalışmada en kısa artık uzunluğu*: 65 mm Tek kesmede en kısa artık uzunluğu: 30 mm Uzunluk: 2300 mm Talaş konveyörü dahil genişlik: 2260 mm Yükseklik: 22100 mm Malzeme destek yüksekliği: 925 mm Makine ağırlığı yaklaşık: 3950 kg Toplam bağlı yük: 26 kW Testere motor gücü: 18,5 kW Hidrolik motor gücü: 2,2 kW Sonsuz ayarlanabilir kesme hızı: 30-160 rpm Testere besleme hızı: 0,3-30 mm/sn Otomatik malzeme besleme uzunluğu, tek strok: 800 mm Otomatik malzeme besleme uzunluğu, çok strok: 9999 mm Testere bıçağı çapı: 360 mm Testere bıçağı deliği: 40 mm Testere bıçağı kalınlığı: 2,25 mm Rsdpfx Aewaa Dvjhvow Standart Ekipman CE standartlarına göre tamamen kapalı koruma, 45 derece servo besleme, CE elektrik güvenliği, ana tahrik, kalıcı mıknatıs motoru, HMI + düğmeler, invertör, sis püskürtme sistemi (2L), toz toplama cihazı, kesme borusu püskürtme cihazı, kabin klima ünitesi, LED çalışma lambası, otomatik talaş konveyörü (spiral), mengene basınç regülatörü, motorlu talaş fırçası, üst kelepçe, hidrolik soğutma fanı, otomatik yağlama cihazı, tek silindirli masa, talaş toplama arabası (70L), alet kutusu (tel fırça, tesviye pedleri, yedek boya), dairesel testere bıçağı Ek Ekipman isteğe bağlı: JLH-EHASaw Master, UL elektrik güvenliği, üçüncü mengene Otomasyon 1,5 m Güç çıkışlı malzeme masası2 m servo güç çıkışlı malzeme masası5,5 m eğimli tahrikli dergi (dikdörtgen malzeme)5,5 m eğimli tahrikli dergi (yuvarlak malzeme)5,5 m kayış beslemeli şarjör (yuvarlak malzeme)

Durum: iyi (kullanılmış), Testere bıçağı PEHAKA HS-820/820 Uzunluk: 10700 genişlik: 67 Rsdotxlz Njpfx Ahvow

Durum: mükemmel (kullanılmış), HSS testere pah makinesi PERUZZI SAUT 550 modeli, tamamen elden geçirilmiş ve yeniden boyanmış, yeni gibi Rsdpshzcctsfx Ahvow

Durum: yeni, Karbür uçlu daire testereler için alüminyum işleme ile aşağıdaki boyutlar: 300 x 3.3 x 32 mm, 72 Z 350 x 3.2 x 20 mm, 84 Z 350 x 3,4 x 32 mm, 56 Z 350 x 3,4 x 32 mm, 72 (kumlu) Z 355 x 2.2 x 25 mm, 66 Z Rodpec R Ty Asfx Ahvow 350 x 4,2 x 34 mm, 54 Z

Üretim yılı: 1987, durum: incelemesiz (kullanılmış), Metal ve segmental daire testereler için otomatik bileme makinesi. Daire testere bıçak çapı 80 - 710 mm. Herhangi bir diş aralığı. Diş yüksekliği 1,2 - 14 mm. Çalışma hızı kademesiz değişken 15 - 180 diş / dak. Rsdjlmkpfopfx Ahvew NC kontrollü ıslak taşlama cihazı,

Durum: mükemmel (kullanılmış), Üretim yılı: 1984, Fonksiyonellik: tamamen fonksiyonel, makine/araç numarası: 137, toplam genişlik: 2.800 mm, toplam uzunluk: 700 mm, toplam yükseklik: 1.700 mm, giriş akımı türü: trifaze, Bant testere bileme makinesi Risstaler Nehri Rivo 200 GA 1984 yılında inşa edildi Çeşitli diş şekilleri mevcuttur Kullanım talimatları mevcuttur Besleme hızı dakikada 30 veya 60 diş Rodpfswd N Dasx Ahvsw

Durum: yeni, Üretim yılı: 2025, Cutting range, square (W x H): 2600 x 100 mm Shortest length of cut piece: 1100 x 20 mm Shortest remaining piece length in automatic operation*: 400 mm Shortest remaining piece length in single cut: 40 mm Total connected load: 41 kW Saw motor power: 30 kW Hydraulic motor power: 7.5 kW Cutting speed, infinitely variable: 20-100 rpm Saw feed rate: 1-700 mm/min Material support height: 720 mm Saw blade diameter: 425 mm Saw blade bore: 50 mm Saw blade thickness: 2.7 mm Length: 12,000 mm Width incl. chip conveyor: 6,300 mm Height: 3,000 mm Machine weight approx.: 28,000 kg Standard equipment Variable blade speed, controlled by an inverter Precision feed pressure and feed rate by dual valve system Servo feed motor with precision ball screw Combined guides with bearings Oil mist cooling system Blade anti-vibration device PLC control for all electrical and hydraulic functions Hydraulic pump with three-phase motor Two sets of horizontal and vertical clamping devices Adjustable base plate Roller table Additional equipment Optional: JLH-EHASaw MasterUL Electrical safetyThird vise Rodpfxoxlcauo Ahvow Automation

Durum: yeni, Round stock Ø 100 - 230 mm Square steel Ø 100 - 170 mm Saw body 30-degree linear slide Saw motor 22 kW Hydraulic motor 5 kW Total power output 34 kW Saw speed 30-120 rpm Saw blade diameter Ø630 x 3.4 x 2.8 mm Control system: Siemens Rodpfeymf Tzsx Ahvew Hydraulics: Rexroth valve Coolant: atomized cutting oil Space requirement approx. 7.5 x 2 x 1.2 m Space requirement approx. 3200 x 7600 mm GERD WOLFF GLS-230 High-Performance Circular Saw with Fully Automatic Loading Table! Discover the new generation of high-performance metal circular saws that deliver precision and efficiency in perfect harmony with German quality. Our high-performance metal circular saw machines set new standards in metal processing through innovative technology, allowing you precise and effortless machining of all types of steel. From 10 millimeters up to an impressive 250 millimeters steel diameter, our machines cut with utmost accuracy within seconds. The core features of these machines are their fully automatic functionalities, combined with an advanced ball screw spindle and an automatic material feeding system. This combination not only ensures top-level precision, but also outstanding speed. A Siemens motor and Siemens PLC touchscreen guarantee reliable performance and user-friendly operation. In addition, our high-performance metal circular saws are equipped with a special system for quick and easy blade changes. The hydraulic material clamping ensures a secure fixation of the workpiece during cutting operations. Moreover, a programmable mist lubrication system is integrated for optimum blade cooling and lubrication, extending tool life. Thanks to our servo and drive technology, you maintain full control over your production processes, enabling you to fine-tune your manufacturing and achieve the highest quality standards. Choose our high-performance metal circular saws and experience the future of metalworking – precise, efficient, and reliable.

Üretim yılı: 2005, durum: iyi (kullanılmış), Motor gücü kW: 1,1 Ağırlık kg: 300 Taşlama çarkının eğim açısının kademesiz ayarı Entegre toz / kıvılcım emme Redpfx Ashqcmujhvsw

Durum: yeni, Capacity Ø 140 - 250 mm Saw motor 30 kW Hydraulic motor 5.5 kW Saw feed motor 3 kW Siemens Material feed motor 3 kW Siemens Saw speed 30–80 rpm Saw blade diameter Ø750 x 3.8 x 3.2 x 80 mm Cutting length min. 1000 mm Cutting length max. 7000 mm Control Siemens Hydraulics Rexroth valve Coolant Powdered cutting oil Space requirement approx. 3500 x 8000 mm Saw speed 30–80 rpm Machine weight approx. 9000 kg GERD WOLFF GLS-250 High-Performance Circular Saw (Fully Automated) From 10 millimeters up to 250 millimeters of steel, you can cut any type of steel precisely and effortlessly within seconds. Equipped with components from Germany, we combine German and Turkish machine engineering. Rodpfx Ahoymf Swovew

Durum: yeni, Capacity Ø 10 - 75 mm Saw motor 11 kW Rjdpoymf Ifjfx Ahvsw Hydraulic motor 3 kW Saw feed motor 1.5 kW Siemens Material feed motor 1.5 kW Siemens Saw speed 70-160 rpm Saw blade diameter Ø285 x 2.0 x 1.7 x 32 mm Cutting length min. 1000 mm Cutting length max. 7000 mm Control system Siemens Hydraulics Rexroth valve Coolant Powdered cutting oil Space requirement approx. 2950x6800 mm Machine weight approx. 3500 kg GERD WOLFF GLS-75 High-performance circular saw (fully automated) From 10 millimetres up to 75 millimetres of steel, you can cut all types of steel effortlessly and with precision within seconds. Equipped with German-made components, we combine German and Turkish engineering in one machine.

Durum: yeni, Üretim yılı: 2023, Kapasite Ø 15 - 100 mm Testere motoru 11 kW Testere dönüş hızı 30-130 devir/dakika Hidrolik motor 2,2 kW Testere ilerleme motoru 1,5 kW Siemens Malzeme besleme motoru 1,5 kW Siemens Testere bıçağı çapı Ø360 x T2.6 x 2.25 x 40 mm Kesme aralığı min. 3000 mm Kesme aralığı maks. 7000 mm Kontrol Siemens Hidrolik Rexroth valf Soğutma sıvısı: Toz kesme yağı Alan ihtiyacı yaklaşık 2900 x 7400 mm Makine ağırlığı yaklaşık 4900 kg GERD WOLFF GLS-160 Yüksek performanslı dairesel testere (tam otomatik) 10 milimetreden 250 milimetre kadar tüm çelik türlerini saniyeler içinde hassas ve sorunsuz şekilde keser. Rjdpfsyk Ihvex Ahvow Alman yapımı bileşenlerle donatılmış olarak, Alman ve Türk makine mühendisliğini birleştiriyoruz.

Durum: mükemmel (kullanılmış), Üretim yılı: 1998, Fonksiyonellik: tamamen fonksiyonel, Islama taşlamalı testere bileme makinesi. Rsdpfx Ahsyt I Hqovsw Taşlama diski çapı 250 mm. Diş açıklığı 25 mm. Yarıklı/kemerli diş profili. Tam otomatik bileme işlemi. Pompa ve tanklı ıslak taşlama sistemi. Bazı yeni yedek parçalar dahil. Çalışır durumda, demonstrasyona hazır.

Durum: yenilenmiş (kullanılmış), İkinci el metal testere makineleri Daire testereler, demir testereler, şerit testereler ve aksesuarlar Michael Maurath Metallsägen 25 yılı aşkın bir süredir kullanılmış testere makineleri alıp satıyor. İmalat ve işleme endüstrilerindeki işletmelerin ve şirketlerin, günlük iş süreçleri için gerekli olan kullanılmış metal testere makinelerini düşük maliyetle satın almalarını sağlıyoruz. Şerit testere makineleri, daire testere makineleri, demir testeresi makineleri, makaralı konveyörler, ölçüm sistemleri veya aksesuarları olsun. -- Kullanılmış testere makineleri: kontrol edilmiş ve tamamen işlevsel -- Yüksek kaliteli testere makineleri satıyoruz ve müşterilerimize yetkin yönetim sunuyoruz. Performans ve kalite, felsefemi ve dolayısıyla ürün yelpazemizi belirleyen temel kriterlerdir. Kullanılmış testere makineleri, yeniden satılmadan önce tamamen işlevsel olduklarından emin olmak için kapsamlı bir şekilde elden geçirilir ve test edilir. Michael Maurath Metallsägen'den şerit testere makineleri satın alırsanız, satın aldıktan sonra da yetkili bir irtibat kişisine güvenebilirsiniz. Saygılarımla, Michael Maurath Maurath Testere Makineleri Redpfx Ahjh A Rv Ievow

Üretim yılı: 2024, durum: yeni, Behringer ve Kasto testere makineleri için yaygın makine tipleri için talaş fırçaları satıyoruz. Minimum sipariş miktarı 20 adettir. Sorularınızı yanıtlamaktan mutluluk duyarız. Rsdpfjww Dgijx Ahvew

Üretim yılı: 2024, durum: yeni, Behringer ve Kasto testere makineleri için yaygın makine tipleri için talaş fırçaları satıyoruz. Minimum sipariş miktarı 20 adettir. Sorularınızı yanıtlamaktan mutluluk duyarız. Rsdpfx Ahetp T N Uevjw

Durum: ikinci el, Üretim yılı: 1981, kullanılmış, iyi durumda Holz-Her markası Tip 1215 1981 yılında inşa edildi makine numarası 710 motor 4.0 kW kesme uzunluğu yaklaşık 5300 mm kesme yüksekliği yaklaşık 2100 mm kesme derinliği 80 mm testere bıçağı çapı yaklaşık 300 x 30 mm serbest duran çıtalı çerçeve uzaklaşıyor Rodpfxovwfmxe Ahvew Alan gereksinimi yaklaşık 6550 mm x 1265 mm x 2895 mm Ağırlık yaklaşık 1000 kg Depolama yeri 97447 Gerolzhofen, serbest yüklenmiş, ambalajsız Mevcut durumda denetlendiği gibi teslim garantisiz ve teminatsız