Hidravlični Primež 160 Mm nakup rabljenega (81.182)

Stanje: novo, Leto izdelave: 2025, vrsta upravljanja: NC krmiljenje, vrsta aktuacije: hidravlični, število valjev: 4, premer spodnjega valja: 460 mm, premer zgornjega valja: 460 mm, premer stranskega valja: 380 mm, delovna širina: 2.050 mm, najv. debelina pločevine: 50 mm, najv. debelina jeklene pločevine: 50 mm, moč: 38,5 kW (52,35 KM), trajanje garancije: 12 meseci, STANDARD EQUIPMENT * The lower, bottom, and side rolls move linearly up and down via body-mounted hydraulic pistons * Protected against overloading * Top and side rolls are driven by hydromotors and planetary gearboxes (3-roll motor drive) * Roll positions are easily readable via three digital indicators * Rolled parts are easily removed due to hydraulically opening head and automatic lifting shaft * Very user-friendly operation via movable control panel * Welded steel construction body * SAE 1050 (CK 50) induction-hardened, forged or rolled steel shafts * Conical bending system * Centralized lubrication system * Hydraulic synchronization system for parallel shaft movement (Ø280 -320 -350 -380 -400 -460) * Electronic synchronization system (Ø500-550-580-620-680) * Dual-speed operation system OPTIONAL EQUIPMENT * Automation via NC and CNC control Njdpjxd S T Usfx Ah Uslb * Top support crane (elevator) for large diameter bending * Hydraulic side supports for large diameter bending * Hydraulic plate ejection system * Ground and polished rolls for special applications * Stepless speed adjustment system * Electronic synchronization system for parallel shaft movement (Ø280 -320 -350 -380 -400 -460) TECHNICAL SPECIFICATIONS Bending Length: 2050 mm Pre-bending: 35 / 40 mm Bending: 40 / 50 mm Top & Bottom Roll Diameter: 460 mm Side Roll Diameter: 380 mm Motor Power: 38.5 kW Bending Speed: 1.5 – 5 m/min Length: 4850 mm Width: 2300 mm Height: 2350 mm Weight: 19800 kg

Stanje: novo, Leto izdelave: 2025, vrsta aktuacije: hidravlični, število valjev: 4, premer spodnjega valja: 380 mm, premer zgornjega valja: 380 mm, premer stranskega valja: 300 mm, delovna širina: 3.100 mm, najv. debelina pločevine: 25 mm, Oprema: dokumentacija / priročnik, kaljeni valji, nožno daljinsko upravljanje, nujno zaustavitev, zavrtljivi zgornji valj, STANDARD EQUIPMENT * Lower, upper, and side rolls move up and down linearly via hydraulic cylinders attached to the frame * Protected against overloading * Upper and side rolls are driven by hydromotor and planetary gearbox (all 3 rolls are motor-driven) * Roll positions are easily read via three digital position indicators * Folded parts can be removed easily thanks to the hydraulically opening head and automatically lifting shaft * Very easy operation with mobile control panel * Welded steel construction frame * SAE 1050 (CK 50) induction-hardened, forged or rolled steel shafts * Conical bending system * Centralized lubrication system * Hydraulic synchronization system for parallel movement of the rolls (Ø280 -320 -350 -380 -400 -460) * Electronic synchronization system (Ø500-550-580-620 -680) * Dual-speed working system Nedpfxjxw Ecve Ah Uolb OPTIONAL EQUIPMENT * Automation with NC and CNC control * Upper crane (elevator) for support during large diameter bending * Hydraulic side supports for support during large diameter bending * Hydraulic sheet ejection system * Ground and polished rolls for special applications * Infinitely variable speed control system * Electronic synchronization system for parallel movement of the rolls (Ø280 -320 -350 -380 -400 -460) TECHNICAL SPECIFICATIONS Bending Length: 3100 mm Pre-bending: 16/20 mm Bending: 20/25 mm Upper & Lower Roll Diameter: 380 mm Side Roll Diameter: 300 mm Motor Power: 31.5 kW Bending Speed: 1.5 - 5 m/min Length: 5850 mm Width: 2250 mm Height: 2350 mm Weight: 19200 kg

Stanje: novo, Leto izdelave: 2025, vrsta upravljanja: NC krmiljenje, vrsta aktuacije: hidravlični, število valjev: 3, premer spodnjega valja: 300 mm, premer zgornjega valja: 300 mm, premer stranskega valja: 280 mm, dolžina valja: 2.550 mm, najv. debelina pločevine: 18 mm, STANDARD EQUIPMENT * Side rolls move up and down orbitally via hydraulic pistons * Protected against overloading * All rolls are driven by hydromotor and planetary gearbox * Easy removal of bent parts thanks to hydraulically opening head * Very easy operation with movable control panel * Position of the lower rolls easily readable via two digital displays * Welded steel construction body * SAE 1050 (CK 45) induction-hardened, hot-rolled steel shafts * Conical bending system with bearings * Hydraulic balancing system for parallel movement of rolls Nlodpfxjw Slf Uj Ah Usb * Extended shaft ends for mounting profile/tube bending rolls OPTIONAL EQUIPMENT * Upper crane (lift) for support during large-diameter bending * Hydraulic side supports for large-diameter bending * Ground and polished rolls for special applications * Section bending rolls for profile bending * Infinitely variable hydraulic speed adjustment * Electronic balancing system for parallel movement of rolls TECHNICAL SPECIFICATIONS Bending Length: 2550 mm Pre-bending: 12/16 mm Rolling/Bending: 16/18 mm Upper & Lower Roll: 300 mm Side Roll: 280 mm Motor Power: 11 kW Bending Speed: 5 m/min Length: 4600 mm Width: 1500 mm Height: 1550 mm Weight: 8400 kg

Stanje: novo, Leto izdelave: 2025, vrsta aktuacije: hidravlični, število valjev: 4, premer spodnjega valja: 400 mm, premer zgornjega valja: 400 mm, premer stranskega valja: 300 mm, delovna širina: 2.550 mm, najv. debelina pločevine: 40 mm, Oprema: dokumentacija / priročnik, kaljeni valji, nožno daljinsko upravljanje, nujno zaustavitev, STANDARD EQUIPMENT * The upper, lower, and side rolls move up and down linearly by means of pistons hydraulically attached to the frame. * Protected against overload. * The upper roll and side rolls are driven by a hydromotor and planetary gearbox (all three rolls are motor-driven). * The positions of the rolls are easily readable via three digital displays. * Easy removal of the rolled part thanks to the hydraulically opening head and the automatically lifting shaft. * Very easy operation with a movable control panel. * Welded steel construction frame. * SAE 1050 (CK 50) induction-hardened, forged or rolled steel shafts. * Cone bending system. * Central lubrication system. * Hydraulic balancing system for parallel movement of the rolls (Ø280 -320 -350 -380 -400 -460). * Electronic balancing system (Ø500-550-580-620-680). * Dual-speed operation system. OPTIONAL EQUIPMENT * NC and CNC control for automation. * Top crane (elevator) for supporting large diameter bending. * Hydraulic side supports for supporting large diameter bending. * Hydraulic sheet removal system. * Ground and polished rolls for special applications. * Stepless speed adjustment system. * Electronic balancing system for parallel movement of the rolls (Ø280 -320 -350 -380 -400 -460). TECHNICAL SPECIFICATIONS Bending Length: 2550 mm Pre-bending: 25/30 mm Bending: 30/40 mm Upper & Lower Roll: 400 mm Side Roll: 300 mm Nedpfx Ahoxw Ebxe Ujlb Motor Power: 38.5 kW Bending Speed: 1.5 - 5 m/min Length: 5350 mm Width: 2250 mm Height: 2350 mm Weight: 17,800 kg

Stanje: novo, Leto izdelave: 2025, vrsta upravljanja: NC krmiljenje, vrsta aktuacije: hidravlični, število valjev: 4, premer spodnjega valja: 380 mm, premer zgornjega valja: 380 mm, premer stranskega valja: 300 mm, dolžina valja: 4.100 mm, najv. debelina pločevine: 16 mm, STANDARD EQUIPMENT * Lower, upper, and side rolls move up and down linearly via body-mounted hydraulic cylinders * Protected against overload * Upper roll and side rolls are driven by hydromotor and planetary gearbox (all three rolls are motor-driven) * Roll positions are easily readable via three digital displays * The hydraulically opening head and the automatically lifting shaft allow easy removal of the bent workpiece * Very easy operation via mobile control panel * Welded steel construction frame * SAE 1050 (CK 50) induction-hardened, forged or rolled steel shafts * Cone bending device * Centralized lubrication system * Hydraulic balancing system for parallel movement of rolls (Ø280 -320 -350 -380 -400 -460) * Electronic balancing system (Ø500-550-580-620-680) * Dual-speed operation system OPTIONAL EQUIPMENT * NC and CNC automation with control panel * Upper crane (hoist) support for large diameter bending * Hydraulic side supports for large diameter bending Nljdpfxew Smc Is Ah Ujb * Hydraulic sheet ejection system * Ground and polished rolls for special operations * Stepless speed adjustment system * Electronic balancing system for parallel movement of rolls (Ø280 -320 -350 -380 -400 -460) TECHNICAL SPECIFICATIONS Bending Length: 4100 mm Pre-bending: 10/12 mm Bending: 12/16 mm Upper & Lower Roll Diameter: 380 mm Side Roll Diameter: 300 mm Motor Power: 31.5 kW Bending Speed: 1.5 - 5 m/min Length: 6950 mm Width: 2250 mm Height: 2350 mm Weight: 22,000 kg

Stanje: novo, Leto izdelave: 2026, premer žaginega lista: 460 mm, največja višina reza: 160 mm, Obseg rezanja okroglega jekla pri 90°: 160 mm, hitrost žaginega lista: 120 obr/min, Območje rezanja kvadratnega jekla pri 90°: 110 mm, premer rezanja: 160 mm, vrtljajska hitrost (min.): 120 obr/min, največja hitrost vrtenja: 120 obr/min, Oprema: vrtilna hitrost brezstopenjsko nastavljiva, Fully Automatic High-Speed Circular Sawing Machine – CHK-160 Circular sawing machines are industrial cutting solutions used for high-precision and rapid cutting of pipes, profiles, and solid metal materials. They are widely preferred on mass production lines to achieve fast, repeatable, and clean cuts. The CRONOSSTECH CHK Series Fully Automatic High-Speed Circular Sawing Machines ensure high production efficiency thanks to their robust mechanical structure and advanced automation system. With a PLC-controlled automation system and a touch-screen operator panel, cutting parameters can be easily adjusted and mass cutting processes can be executed with high precision. The spheroidal graphite cast iron machine body, powerful gearbox system, and servo-driven feeding technology provide vibration-free operation and extended tool life. CHK Series machines are designed for fast and precise cutting of tubes, profiles, and solid materials. Key Advantages • Fully automatic cutting operation • High-speed circular saw cutting technology • Servo-driven feeding system • PLC-controlled automation system • High cutting precision and stability • Robust machine construction for industrial applications Applications • Steel service centers • Metalworking facilities • Tube and profile manufacturers • Machine manufacturing industry • Automotive and related industries Standard Features • Precision cutting and smooth surface quality • Special gearbox design • Automatic lubrication system • Centralized lubrication system • Adjustable vise pressure system • Servo-driven feeding system • Automatic loading system • Pallet conveyor system • Electromagnetic brake system • Scrap separation system • Diameter control system Nledpfxoyq N Nzj Ah Uob • Chip cleaning brush driven by hydromotor • Pneumatic pressure control system • User-friendly operation with PLC control unit • Torque control system extending blade life • Easy adjustment of vise pressure according to material type Technical Specifications – CHK-160 Cutting Capacity (Round): Ø40 – 160 mm Cutting Capacity (Square): Max 110 × 110 mm Cutting Capacity (Rectangular): Max 140 × 120 mm Main Motor Power: 15 kW Hydraulic Motor Power: 3 kW Material Feeding Motor Power: 2.2 kW Circular Saw Blade Size: Ø460 × 2.25 × 2.7 mm Blade Speed Range: 30 – 120 rpm Single Feed Length: 720 mm Bundle Material Feed Length: 3000 mm Remnant Length: 60 – 70 mm Machine Weight: 4600 kg

Stanje: dober (rabljeno), Hydraulic machine vise VERTEX, Origin Taiwan with 3-stage quick adjustment Jaw width: 210 mm Clamping force: 8 t Jaw height: 60 mm Clamping range: 300 mm Dimensions (L x W x H): 720 x 290 x 165 mm Weight: 98 kg - Clamping force can be set hydraulically or mechanically - Quick adjustment via locating pin - Includes handle and extension Nljdpswm Evdefx Ah Ueb Siegfried Volz Werkzeugmaschinen Rüschebrinkstr. 151-153 DE - 44143 Dortmund - Wambel

Stanje: novo, We offer new hydraulic accumulators and rubber membranes from Orsta Hydraulik for sale, as well as spare parts for these products. We have new, complete Orsta accumulators in stock in the following sizes: • ORSTA 1l/160 bar TGL 10843 hydraulic accumulator • ORSTA 2.5l/160 bar TGL 10843 hydraulic accumulator • ORSTA 6.3l/160 bar TGL 10843 hydraulic accumulator • ORSTA 10l/160 bar TGL 10843 hydraulic accumulator • ORSTA 25l/160 bar TGL 10843 hydraulic accumulator We also supply all necessary spare parts, such as membranes (Orsta rubber bladders), pressure valves, sealing caps, and filling pieces. Nodpfjv Ulmtox Ah Uolb Please feel free to send us your enquiries.

Stanje: rabljeno, Ponudba palet: 150 rabljenih plastičnih zložljivih zabojev – 400x300 mm, 15 litrov, perforirani. Nlsdpsy Hptgsfx Ah Ueb Ta plastični zložljivi zaboj z Euronorm merami 400x300 mm in prostornino 15 litrov je praktična in zanesljiva rešitev za shranjevanje in transport različnih izdelkov. Zaboj je izdelan iz lahkega in

Stanje: novo, Funkcionalnost: popolnoma funkcionalen, širina čeljusti: 73 mm, višina čeljusti: 35 mm, Precizni primež Znamka: Vertex Tip: VBST-30 Dolžina: 190 mm, širina: 73 mm, višina: 68 mm Širina čeljusti: 73 mm Razpon: do 100 mm Višina čeljusti: 35 mm S funkcijo vleka navzdol Nerjaveč Kaljeno 58–60 HRC Površina fino brušena Pravokotnost 0,005/100 mm Nledpfjyml A Aox Ah Ujb V etuiju iz umetnega usnja

Stanje: novo, Funkcionalnost: popolnoma funkcionalen, širina čeljusti: 20 mm, višina čeljusti: 19 mm, Ploski primež za erozijo Znamka: Matchling Tip: V2075 Njdpeymdamsfx Ah Uslb Dolžina: 125 mm, širina: 100 mm, višina: 20 mm (brez vretena) Material: nerjaveče jeklo Širina čeljusti: 20 mm Razpon vpenjanja: do 75 mm Višina čeljusti: 19 mm Funkcija poteg navzdol Nerjaveč V leseni škatli

Stanje: novo, Funkcionalnost: popolnoma funkcionalen, Leto izdelave: 2026, skupna masa: 1.400 kg, vhodna napetost: 400 V, skupna dolžina: 1.270 mm, skupna širina: 1.100 mm, skupna višina: 1.700 mm, Metal Technics Polska Professional CNC Machines, Lasers, and Metalworking Machines We are a manufacturer and importer of high-quality metalworking machinery. We supply proven technologies from Poland, Europe, and Asia, used by hundreds of companies throughout Europe. For over 12 years, we have focused on quality, precision, and reliability. METAL SHAPING MACHINE B5016C – 160 mm STROKE METAL SHAPING MACHINE B5016C Nljdpfx Asyuc D Tsh Usb A machine designed for machining various internal and external surfaces, particularly suitable for manufacturing keyways. It is widely used in repair shops as well as in toolmaking departments. Technical Data Parameter Specification Maximum ram stroke 160 mm Number of strokes per minute 23 / 32 / 44 / 48 / 67 / 92 Worktable diameter 350 mm Vertical adjustment of ram 160 mm Distance from tool holder to column 485 mm Distance from table surface to ram body 320 mm Maximum longitudinal travel of worktable 360 mm Maximum cross travel of worktable 320 mm Maximum rotation angle of worktable 360° Maximum tool dimensions 25 × 40 mm Maximum table load 300 kg Maximum thrust force 4.5 kN T-slot width in worktable 14 mm Main motor power 1.5 kW Dimensions (L × W × H) 1270 × 1100 × 1700 mm Weight 1400 kg Delivery Conditions - Machine brand new - 12 months warranty - Warranty service - Post-warranty service - CE Declaration of Conformity - Operation manual in English - Delivery to customer's location possible. Transport costs are calculated individually by the transport company. If you are interested in more machines, please visit our website.

Stanje: dober (rabljeno), Ultrazvočni senzor, ultrazvočni generator, ultrazvočna nihajna enota, ultrazvočni pretvornik, ultrazvočni varilni stroj za plastiko, ultrazvočni pretvornik, ultrazvočna sonotroda -Ultrazvočni varilni pretvornik: ultrazvočna nihajna enota -Varilni pretvornik/rog: tip R2003474 -Ultrazvočna sonotroda: -Količina: 1x ultrazvočna nihajna enota na voljo -Dimenzije: 515/160/V115 mm Nlsdsyxm Rtspfx Ah Ujb -Teža: 18,9 kg

Stanje: rabljeno, We offer used beams here. Njdpfx Ajv U Urleh Uslb TECHNICAL DATA Clear span: 3,700 mm Box section: 160 x 50 mm Load capacity: 3,900 kg per pair of beams Colour: Daffodil yellow Condition: Used PRICE €27.00 net per unit €32.13 gross per unit Available quantity: 650 units TIERED PRICING PER UNIT 1 - 30 units: €27.00 net 31 - 60 units: €25.92 net 61 - 120 units: €24.84 net from 120 units: €23.76 net YOUR CONTACT PERSONS Oliver Kopp Rainer Nürenberg Tanja Henkelmann TRANSPORT & ASSEMBLY We are happy to assist you with transport and assembly of the goods. This item is available for collection. Delivery or shipping is possible for an additional charge. Additional costs depend on the place of delivery and the shipment volume and can be provided by us on request. PROJECT PLANNING Our sales team will gladly prepare a non-binding offer tailored to your requirements. TRANSPORT & ASSEMBLY We are happy to assist you with transport and assembly of the goods. PAYMENT TERMS Payment conditions are to be agreed upon in case of an order. The price is understood as the unit price/net price or as stated in the description (plus VAT). Naturally, you will receive an invoice showing VAT. ABOUT US DLK, based in Nordhorn, trades in new and used products in the fields of warehouse logistics, conveyor technology, mezzanine floors, textile warehouses, as well as machinery for trade, industry and crafts. We constantly offer attractive used equipment from various manufacturers/brands at competitive terms. If you have any questions, please feel free to contact us. Four steps to success – The DLK success modules: Warehouse Technology | Levelmaker® | Logistics | Solutions

Stanje: novo, Funkcionalnost: popolnoma funkcionalen, skupna višina: 30 mm, širina čeljusti: 25 mm, skupna dolžina: 65 mm, skupna širina: 25 mm, višina čeljusti: 10 mm, širina vpenjanja: 25 mm, obseg vpenjanja: 19 mm, dolžina vpenjanja: 19 mm, zahteva za prostor dolžina: 65 mm, potrebna širina: 25 mm, Vpenjalna klešča iz nerjavečega jekla (mini precizna vpenjalna klešča) Znamka: Vertex Tip: VSTV-10V Material: SUS440 Širina čeljusti: 25 mm Maksimalna odprtina: 19 mm Višina čeljusti: 10 mm Dolžina: 65 mm Širina: 25 mm Višina: 30 mm Nlsdpfx Ahoyidt Nj Usb Teža: 0,3 kg

Stanje: dober (rabljeno), Forged vice, bench vice, anvil vice, anvil, blacksmith’s anvil, machine vice, engineer’s vice, parallel vice -Jaw width: 135 mm -Clamping width: 150 mm -Quantity: 9 vices available -Price: per piece -Dimensions: 450/160/H900 mm -Weight: 35 kg Njdpfxodl E Ire Ah Uslb

Stanje: skoraj kot novo (rabljeno), Mlinček za meso Nsdox Aydljpfx Ah Uolb K+G Wetter Obratovalna napetost: 400V / 50Hz Krmilna napetost: 24V Moč: 38kW

Stanje: dober (rabljeno), Delavni primež, ključavničarski primež, vzporedni primež -Širina čeljusti: 150 mm -Odpiralna razdalja: 315 mm -Količina: 1 primež na voljo -Cena: na kos -Dimenzije: 570/220/V400 mm Njdpfoyq Hkpjx Ah Ujlb -Teža: 52,7 kg

Stanje: rabljeno, Hidravlični strojni primež, visokotlačni vpenjalni element KESEL ARNO Širina čeljusti: 200 mm Višina čeljusti: 60 mm Vpenjalna sila: 8 ton Območje vpenjanja: 0 do 370 mm Maksimalna odprtina: 373 mm Višina vodila: 140 mm - 2 vpenjalni območji nastavljivi z zatičem Nljdpfxsd Amwis Ah Ueb - Vrtilna plošča Mere (D x Š x V): 900 x 400 x 210 mm Lastna teža: 125 kg Dobro ohranjen

Stanje: rabljeno, Hidravlični strojevi primež, visokotlačni vpenjalec ARNOLD / FRESMAK Širina čeljusti: 160 mm Višina čeljusti: 50 mm Vpenjalna sila: 5 ton Obseg vpenjanja: 0 do 305 mm Maksimalna odprtina: 308 mm Višina vodila: 112 mm - 2 vpenjalna območja nastavljiva prek zatiča: 0 do 158 in 148 do 308 mm - z vrtljivo ploščo Dimenzije (D x Š x V): 580 x 325 x 165 mm Lastna teža: 65 kg Nljdexp R E Tepfx Ah Usb Dobro stanje

Stanje: dober (rabljeno), Hidravlični strojnoklestič Proizvajalec: Saurer ALLMA GmbH Oznaka: Tip 160 Številka: 91 306 Čeljusti: 160 x 50 mm Razpon: 302 mm Pritrdilna površina: 600 x 160 mm Nodpfoylainsx Ah Uolb Višina: 140 mm Teža: 55 kg Skupne mere: 630 x 160 x 140 mm Cena: 600 EUR na kos (na voljo 3 kosi) Cena z 19 % DDV: 714 EUR na kos (na voljo 3 kosi) Cena za 2 kosa: 1.000 EUR + 19 % DDV Cena za 3 kose: 1.200 EUR + 19 % DDV

Stanje: dober (rabljeno), Cevni grelec, grelni trak, grelna manšeta, sljudni grelec, ogrevanje cilindra, grelni cilinder, keramični grelni trak Nedpfxelvykxj Ah Uelb -Proizvajalec: Krauss Maffei, grelni trak, grelna manšeta -Tip: Ø200 x 160 mm .: 401 7184 -Grelna moč: 5500 W -Napetost: 230/400 V -Količina: na voljo 1x grelni trak -Cena: na kos -Dimenzije: 310/255/V160 mm -Teža: 4,0 kg

Stanje: dober (rabljeno), Fiksatorji, izravnalne enote, izravnalni elementi, strojna noga, strojne noge, izravnalni čevlji, strojni temelj, izravnalni čevelj, klinasti čevelj, strojna opora, izravnalna noga, vzmetni elementi - Vzmetni element: 2 kosa, za obdelovalne stroje in naprave - Vzmetni element: Ø 160 mm - Montažna luknja: M16 - Cena/dobava: komplet - Dimenzija: Ø 160 x 38 mm Nledpsv Rmkfefx Ah Ujb - Teža: 2,3 kg/kos

Stanje: kot nova (razstavni stroj), unused steady rest Brand: Bulmak Maximum opening width: 160 mm Height from mounting surface to spindle center: 170 mm Nlodpfx Aof Hmnboh Usb Distance between mounting holes: 360 mm Mounting surface: 410 x 70 mm Total height: 490 mm Depth: 460 mm Weight: 26 kg

Stanje: rabljeno, Hidro-pnevmatski obdelovalni primež HILMA - ROEMHELD Tip SMPH 125 Širina čeljusti: 125 mm Višina čeljusti: 45 mm Vpenjalna sila: 3 toni pri 7 bar Nljdpfx Ahjxw Rdfe Ujb Vpenjalna sila: 2 toni pri 5 bar Vpenjalni razpon: 0 do 210 mm Maksimalna odprtost: 214 mm Višina vodila: 67 mm - Hidro-pnevmatski ojačevalnik sile - 3 vpenjalna območja nastavljiva s pomočjo zatiča od 0 do 214 mm Dimenzije D x Š x V: 550 x 260 x 135 mm Lastna teža: 33 kg Dobro ohranjen