Aluminij nakup rabljenega (755)

Stanje: novo, Leto izdelave: 2026, Funkcionalnost: popolnoma funkcionalen, premer žaginega lista: 520 mm, CNC-controlled double-head mitre circular saw machine with electronic saw unit swiveling A high-performance circular saw designed for precise and efficient cutting of aluminium profiles, non-ferrous metals, and various plastics. The machine can be used for single cuts—utilizing both saw heads simultaneously to cut the profile—or in automatic mode, where the double-head saw functions as a single-head saw automaton. Electronic mitre adjustment of the saw heads. Mitre angles infinitely programmable between 20° and 135°. Saw blade drive power: 2 x 2.2 kW Saw blade diameter: Ø 520 mm Max. cutting length with both saw heads simultaneously: 4,000 mm or 5,000 mm Max./min. cutting length in automatic mode: unlimited (the profile is pushed and pulled) Length of infeed roller conveyor: 2,300 mm Maximum required floor space: approx. 7.2/8.2 m (saw unit fully to the right) x 1.25 m x H 1.6 m Weight: approx. 1,500 kg / 1,700 kg - CNC control with touch-screen and color graphics on a movable operator panel - Import and export of CSV / LTE files (for loading cutting lists from an external CAD software) - Graphical profile display Ljdpfxszcphzo Abxeac Optionally equipped with a label printer.

Stanje: dober (rabljeno), Funkcionalnost: popolnoma funkcionalen, premer žaginega lista: 350 mm, Motor žage 1,5 / 1,8 kW Velikost žaginega lista 350 mm 2 hitrosti vrtenja žaginega lista 1400 / 2800 obr/min Lsdpfxezfn E As Abxjac Kot za poševno rezanje brezstopenjsko nastavljiv +- 45°

Stanje: zelo dobro (rabljeno), Leto izdelave: 2023, obratovalne ure: 499 h, Funkcionalnost: popolnoma funkcionalen, številka stroja/vozila: 1587 / 1588, premer žaginega lista: 500 mm, This model combines precise cutting to length with integrated punching operations, making it ideal for complex manufacturing processes: Saw unit: Equipped with a saw blade diameter of 500 mm. The drive is provided by a 7.5 kW motor (400 V) with infinitely variable speed control. Punching unit: Features a hydraulic punching unit on the discharge side with a punching force of 250 kN. The punching direction is vertical from above, and up to 8 profile punching tool cassettes can be used simultaneously. Material feed: The feed is managed via a ball screw and a servomotor, with a maximum feed length of 400 mm per individual stroke. Control: Modern variants often utilize a Siemens S7 control system with a touch display for intuitive operation and precise programming. The machine is built for continuous industrial use and has the following physical characteristics: Weight: approx. 1,000 kg to 1,500 kg (depending on configuration). Dimensions (saw): approx. 2,100 x 2,000 x 1,600 mm (LxWxH). Hydraulic unit: approx. 900 x 600 x 800 mm. 2 machines in stock. ----- Attractive offer – flexible & worry-free We not only offer you a high-quality product, but also tailor-made financing options to suit your needs. Whether down payment, installment payments, or individual financing models – together we will find the right solution for you. On request, we also handle complete transport logistics. From planning through to reliable delivery, we ensure a smooth and punctual process so you have nothing to worry about. 📞 Please feel free to contact us for further information or a non-binding quotation. We provide you with personal and expert advice. Ljdpjyyz Txjfx Abxeac Interim sale, changes and errors excepted!

Stanje: zelo dobro (rabljeno), Leto izdelave: 2023, obratovalne ure: 450 h, Funkcionalnost: popolnoma funkcionalen, številka stroja/vozila: 1589 / 1590, premer žaginega lista: 500 mm, Fully Automatic Sawing and Punching System for Aluminium and Plastic Profiles The Profilma 502 ST - V combines precise sawing and punching in a continuous, automated work process. Based on the proven Profilma 502 model, this machine is ideal for high production volumes, complex machining operations, and processing of bundled materials. Control is handled via a Siemens S7 system with touch display, piece counter, cycle time indicator, and integrated fault diagnosis. An IXON router provides secure remote access via VPN. Up to 10 punching dimensions can be programmed per order. Sawing Range & Feed: 500–550 mm saw blades Saw drive: 7.5 kW, S6, 400 V, 50 Hz, 2,850 rpm Infinitely variable speed regulation Saw cut from below, motorized feed Material feed: 3–800 mm, reversible up to 4,000 mm Ballscrew with servo drive and round-shaft guide Remnant piece: from 75 mm (sawing mode), from 80 mm (punching/sawing mode)* Punching Unit: Vertical hydraulic punching unit (outfeed side) with automatic oil cooling Punching force: 300 kN Stroke: 20 mm Double-stroke cycle time: 2–3 seconds Punch scrap ejection into frame Conveyor belt 250 × 800 mm for parts removal Equipment: 2 pneumatic clamping cylinders (vertical, reduced pressure) 3 chip extraction ports, Ø 100 mm, volt-free contact for extraction control Minimum quantity lubrication system with 2x 3-liter tank and fill level display Noise reduction package: hood and internal saw blade guard insulated Roller conveyor (740 mm) with operator protection on infeed side Sturdy stationary machine frame, working height: 960 mm Manually operated safety hood Saw blade housing located below table surface Max. Cutting Range: Profile height: up to 65 mm Profile width: up to 170 mm Technical Data: Dimensions (W × D × H): approx. 311 × 153 × 197 cm 2 machines available ----- Attractive Offer – Flexible & Worry-Free Ledpfjyyz Ebsx Abxoac We offer not only a high-quality product but also tailor-made financing options that suit your needs. Whether down payment, installment plan, or individual financing models – together we’ll find the right solution. On request, we can also take care of the entire transport logistics. From planning through to reliable delivery, we ensure a smooth and timely process so you don’t have to worry about a thing. 📞 Contact us for more information or a non-binding quote. Our advice is personal and professional. Subject to prior sale, changes and errors excepted!

Stanje: zelo dobro (rabljeno), Leto izdelave: 2023, obratovalne ure: 67 h, Funkcionalnost: popolnoma funkcionalen, številka stroja/vozila: 1591 / 1592, premer žaginega lista: 500 mm, Fully automatic sawing and punching machine for aluminium and plastic profiles The Profilma 502 ST - HV combines precise sawing and flexible punching in a fully automated process. Based on the Profilma 502 model, it is specifically optimized for high-volume applications and combined processing operations – including the handling of entire profile layers. Control is managed via a Siemens S7 system with touch display, piece counter, cycle time indicator, and integrated fault diagnostics. An IXON router enables secure remote access via VPN. Up to 10 punching dimensions can be programmed per job. The horizontal punching unit can be deactivated if needed. Sawing range & feed: 500–550 mm saw blades Saw drive: 7.5 kW, S6, 400 V, 50 Hz, 2,850 rpm Continuously variable speed control Up-cut sawing, motorized feed Material feed: 3–800 mm, reversing up to 4,000 mm Ball screw spindle with servo drive and round shaft guide Offcut: from 75 mm (saw mode), from 80 mm (punch/saw mode)* Punching unit: Vertical and horizontal hydraulic punching (discharge side) with automatic oil cooler Punching force: 2 × 150 kN Stroke: ≤ 20 mm Vertical stroke infinitely adjustable (also suitable for embossing) Horizontal punching cylinder can be switched off separately Double-stroke cycle time: 2x 2–3 seconds Punch waste is discharged laterally from the machine frame Conveyor belt 250 × 800 mm for parts removal Equipment: 2 pneumatic clamping cylinders (vertical, pressure-reduced) Lsdpfx Absyyzxhsxeac 3 chip extraction nozzles Ø 100 mm, potential-free contact for extraction control Minimum quantity spray unit with 2x 3-litre tanks and level indicators Noise protection package: hood and saw blade guard with internal insulation Roller conveyor (740 mm) with reach-in protection on infeed side Sturdy stationary frame, working height: 960 mm Manually opening safety hood Saw blade housing below the tabletop Max. cutting range: Profile height: up to 65 mm Profile width: up to 135 mm Technical data: Dimensions (W × D × H): approx. 311 × 153 × 197 cm A total of 2 units available. ----- Attractive offer – flexible & worry-free We offer not only a high-quality product, but also tailored financing options that suit your needs. Whether it’s a down payment, installment plan or individual financing models – together, we’ll find the right solution. On request, we can also handle the complete transport logistics. From planning to reliable delivery, we ensure a smooth and punctual process so you don’t have to worry about a thing. 📞 Please contact us for further information or a non-binding offer. We provide personal and competent advice. Subject to prior sale, changes and errors excepted!

Stanje: novo, Leto izdelave: 2023,

Leto izdelave: 2021, stanje: rabljeno, Maks. premer žaginega lista: 380 mm Brezstopenjski pomik žaginega lista preko dvoročnega upravljanja Pnevmatske vpenjalke za material Lodpfx Abezf D Adexsac Naprava za minimalno količino pršenja Teža: pribl. 350 kg

Leto izdelave: 2005, stanje: rabljeno, Najv. premer žaginega lista: 550 mm Zasukanje navznoter in navzven 22,5° - 90° - 140° Lasdpfx Ajzf Agzjbxjc Pnevmatski nagib kota med 45 in 90 stopinj Digitalni prikazovalniki kotov Podajanje z dvoročnim upravljanjem Valjčne proge in omejevalniki dolžine na zahtevo Teža: cca 1.000 kg

Stanje: pripravljen za uporabo (rabljen), Leto izdelave: 2008, Funkcionalnost: popolnoma funkcionalen, High-Performance Automatic Saw / Manufacturer: PRESSTA-EISELE Model: Profilma 510 / Year of manufacture: 09/2008 Description: * High-performance sawing machine with fully automatic operation * Very high cutting precision * Short cycle times Lodpfx Ajw D T Uisbxjac * Low-burr sawing * High reliability * Low maintenance requirements Suitable for aluminum and plastic; ideal for cutting large quantities of small parts. Length tolerance: 0.1 mm. The saw can be viewed and tested under power by appointment. Previous use: Cutting of corner connectors. Very well-maintained, ready-to-operate used condition. Technical data: - Saw motor: 7.5 kW, S6 - Speed: 2,000 - 3,500 rpm - Cutting speed: up to 92 m/s - Material feed length: up to 1,000 mm / 5-fold reversal possible - Cut length: from 8 mm depending on profile - Remaining piece length: from 90 mm depending on cut length - Working pressure: 6 - 8 bar - Power supply: Standard: 400 V, 50 Hz - Weight: 1,750 kg - Dimensions (L/W/H): 2,700 x 1,400 x 2,300 mm Equipment: - Siemens S7 control panel - Fully automatic bar feeder - Roller conveyors - Extraction unit - Chip bunker - Various accessories - CE marking No guarantee as to the completeness or correctness of the technical data and equipment. Subject to prior sale.

Stanje: dober (rabljeno), Leto izdelave: 1994, obratovalne ure: 1.000 h, Funkcionalnost: popolnoma funkcionalen, premer žaginega lista: 550 mm, Obseg rezanja okroglega jekla pri 90°: 200 mm, vrsta vhodnega toka: Klimatska naprava, vrtljajska hitrost (min.): 2.800 obr/min, največja hitrost vrtenja: 2.800 obr/min, skupna masa: 1.000 kg, premer rezanja: 200 mm, Zelo malo rabljena aluminijasta krožna žaga z merjenjem dolžine na valjčni progi ZNAMKE ELUMATEC POGON S KOMPRESORJEM Laedpfozavzvjx Abxoc Premer žaginega lista 550 mm Maksimalna dolžina reza 200 mm pri 90 stopinjah Ponudba vključuje valjčne proge in merjenje dolžine Viličar za nakladanje na voljo

Stanje: dober (rabljeno), Leto izdelave: 1994, Funkcionalnost: popolnoma funkcionalen, številka stroja/vozila: 117004, skupna dolžina: 7.500 mm, skupna širina: 1.200 mm, skupna višina: 2.000 mm, skupna masa: 2.500 kg, KALTENBACH SKL 400 H Cold Circular Saw (completely overhauled) - Operating voltage: 400 V - Frequency: 50 Hz - Rated current: 20 A - Saw blade: 400 x 4 x 50 mm - Saw blade bore: 50/4 x 14/80 mm - Working range round material 90/45°: 130 mm - Square material 90°: 120 mm - Profiles 90°: 300 x 45 mm - Profiles horizontal 45°: 220 x 60 mm - Profiles vertical 45°: 80 x 120 mm - Saw motor: 3.7/4.5 kW - Cutting speed: 1750/3500 m/min - Saw blade feed rate: 0 - 3700 mm/min - Rapid return of saw blade: 4500 mm/min Additional equipment: - Workpiece clamping with short-stroke clamping vice: 8 mm stroke - With handwheel for preadjustment - Machine fully overhauled and repainted - Horizontal clamping cylinder front, per piece - Minimal lubrication instead of coolant mist spraying unit Laedpfxoy Dcu Ej Abxoc - Infeed roller conveyor T3 with 60 x 289 mm rollers - One starter section: 2000 mm, with 5 rollers, one support leg, one connection bracket - One extension section: 2000 mm, with 4 rollers, one support leg, one stop roller, adjustable as guide for material bars - Measuring device including outfeed roller conveyor T3 Note: The item must be collected bindingly between 07 and 09 July 2026 at a time still to be agreed. FCA D-71263 Weil der Stadt – loaded onto truck

Stanje: zelo dobro (rabljeno), KATALOŠKA ŠTEVILKA 7623 Tehnični podatki: - maks. premer žaginega lista: 300 mm - premer vretena: 30 mm - pokrovi za žagine liste: 2 kosa - pnevmatski izteg lista - žagalni agregati nastavljivi pod 45° - ročno nastavljiva razdalja med žagalnimi agregati - min. dolžina reza pri 90°: 300 mm - maks. dolžina reza pri 90°: 4600 mm - širina reza: 90 mm - višina reza pri 90 stopinjah: 90 mm - pnevmatski pritiski: 2 kosa - upravljalni gumbi - podpora za material: 3 kosi - glavni motor: 2×1,1 kW - premer odsesovalnega priključka: 2x90 mm - dimenzije (d/š/v): 5030x1150x1400 mm - teža pribl. 500 kg PREDNOSTI – italijanska proizvodnja – nagibni žagalni agregati – rabljena žaga, v zelo dobrem stanju Ledpfx Asx Tpukjbxoac Cena brez DDV: 15.900 PLN Cena brez DDV: 3.780 EUR glede na tečaj 4,2 EUR (Cene se lahko spremenijo ob večjih nihanjih)

Stanje: novo, Leto izdelave: 2026, * Production time approx. 4-5 months --- Our bestselling briquetting press series + Proven, simple technology for extremely low susceptibility to faults + 25 years of experience, continual development, and expertise + Several hundred machines in operation with satisfied customers + Excellent price-performance ratio The hydraulic briquetting presses of the MPP NEM series compress materials such as aluminum, copper, brass, bronze, graphite, and other non-ferrous metals into dimensionally stable cylindrical briquettes. The machines feature a robust construction that ensures consistent briquette quality during continuous operation. The pressing process is performed without the addition of binding agents, using only hydraulic pressing force. Depending on the material, the volume of the input material can be reduced by up to 90%. The standard silo has a capacity of approx. 0.5 m³. Silos with larger capacities or special containers designed for integration under existing extraction and filtration systems for complete disposal units are also available. Depending on customer requirements, individual MPP NEM units can be combined into a system. The press’s chip hopper can be loaded manually, via conveyor belt, with a dust extractor, or by a tipping container cart. For fully automated system operation, the use of a lift-and-tip device in combination with a shredder is recommended. The briquetting presses of the MPP NEM series are designed for the production of briquettes from homogeneous material. The length of a briquette is, depending on the model, 40 to 75 mm; the diameter is, depending on the type, 50, 65, or 70 mm. For emulsion recovery, the briquetting press can be equipped with a collection tray, allowing cooling, cutting, and lubricating fluids to be collected and recovered. Non-ferrous metal chips up to approx. 20 mm in length are filled into the storage hopper of the briquetting press. A stirrer is installed at the bottom of the hopper to prevent bridging and to feed the material into the pre-compaction chamber. In this chamber, a hydraulic slide pre-compacts the material and pushes it into the pressing block. The main press cylinder presses the material against a vertical slide until the set pressing pressure is reached. The vertical cylinder then moves upward, ejecting the stable briquette. Laedpfjchqxxex Abxec Advantages of briquette production include: • Volume reduction of up to 90% • Emulsion recovery • Cost savings in storage and transport • Cost-effective disposal • Profitable sale -- Briquetting Press NEM 300 Throughput approx. up to 200 kg per hour (highly depending on material). - In the last test with aluminum granulate under 5 mm: approx. 186 kg per hour + recovered emulsion. - In the last test with aluminum chips under 18 mm: approx. 120 kg per hour + recovered emulsion. Technical specifications: Motor: 7.5 kW (+ 0.55 kW on the cooler) 400 Volt / 50 Hz / 3-phase Front bushing: 125 mm Max. briquette stroke: 100 mm Optimal briquette stroke: 80 mm Pump: 80 liters Storage hopper approx. 0.5 m³ capacity (extendable)

Stanje: delavnici obnovljeno (rabljeno), Leto izdelave: 2023, All wear parts new only 704 operating hours Special price for lightly used demonstration machine Base machine: €29,990 net Options at extra cost: - Cooling unit: €3,995 net - Emulsion tank: €3,990 net The hydraulic briquetting presses of the MPP NEM series compress materials such as aluminium, copper, brass, bronze, graphite and other non-ferrous metals into dimensionally stable cylindrical briquettes. These machines are characterised by a robust design that ensures consistent briquette quality during continuous operation. The compaction process is carried out without the addition of binding agents, relying solely on hydraulic pressing force. Depending on the material, the volume of the input material can be reduced by up to 90%. Throughput capacity: up to max. 70 kg/h (material-dependent), Briquette diameter: Ø 50 mm, Motor: 5.5 kW, 400 Volt / 50 Hz / 3 phase, Pump: 40 litres Max. briquette length: 50 mm, Ledpfxjd N Dnhs Abxjac Optimal briquette length: 40 mm, Silo diameter: 1,000 mm, Oil tank: 110 litres Dimensions: 1750 x 1130 x 1100 mm (L x W x H) Weight: 950 kg Hydraulic pre-compaction via slide Main press cylinder Vertical cylinder Fill level sensor: yes Requirements for the input material - Max. chip length: 15 mm - Installation temperature: temperature-controlled room at a minimum of +5°C - Max. weight on agitator: 150 kg - The feed material must be free from ferrous metals and mineral impurities such as sand, stones, etc. Damage to the pressing tools and/or increased wear may result

Stanje: dober (rabljeno), Žična elektroda, varilna žica, varilna žica, polnjena žica -Varilna žica: polnjena žica, boben z odvitjem -Žica: aluminij Ø 2,4 mm Ljdszcv Rpepfx Abxeac -Kolut: Ø630 x 460 mm -Transportne mere: 680/640/H690 mm -Teža: 238 kg

Leto izdelave: 2004, stanje: rabljeno, Najv. premer žaginega lista: 500 mm Območje reza do 80 x 200 mm Dolžina podajanja: maks. 800 mm z digitalnim prikazovalnikom Hitrost žaginega lista: 2 obr./min Števec kosov z avtomatskim izklopom ob doseženi nastavljeni vrednosti Brezstopenjsko nastavljiv pnevmatski podajalnik materiala Hidropnevmatski podajalnik žage Ljdpfxoxn Iq Do Abxoac Pnevmatske vpenjalke materiala Naprava za pršenje Vključuje navodila za uporabo Dimenzije stroja: 2100 x 1100 x 1500 mm (ŠxDxV) 1000 kg

Stanje: novo, Leto izdelave: 2024, Underground Light-Alloy Circular Saw Brand: METALLKRAFT Model: ULMS 420 Article No.: 3627420 Condition: New machine Cutting range (square): 120 x 120 mm Speed: 2900 rpm Standard features include: - Saw blade 420 x 30 x 4.0 mm Z 120 - Minimum quantity lubrication system - Compressed air gun and spiral hose - Two extraction ports for connection to a dust extraction system Lasdpfx Aotuch Eobxjc - Operating manual

Leto izdelave: 2012, stanje: rabljeno, Maks. premer žaginega lista: 530 mm Lajdezabmqspfx Abxjc Kapaciteta reza pri 90° Okroglo 180 mm, Kvadrat 170 mm, Pravokotnik 380x70 mm Kapaciteta reza pri 45° levo Okroglo 180 mm, Kvadrat 150 mm, Pravokotnik 290x70 mm Kapaciteta reza pri 45° desno Okroglo 180 mm, Kvadrat 150 mm, Pravokotnik 290x70 mm Digitalni prikaz kota za žagino mizo Obseg vrtenja žagine mize 180° Pršilna naprava Dvoročno upravljanje

Stanje: zelo dobro (rabljeno), Leto izdelave: 2002, Aluminium profile mitre saw, manufacturer: Dry Tech Model: 355 MLS, year of manufacture: 2002. Lasdpfxstwn E Us Abxec Saw blade diameter: 355 mm Cutting capacity: - Round material: max. 120 mm - Square material: max. 120 mm x 120 mm

Stanje: rabljeno, Dvoglava kotna žaga RAPID tip DGL 5000 / 500 Potreben popravila – krmilje ne deluje Leto izdelave: 1993 Dolžina reza: 5000 mm Lodpoyxy S Djfx Abxsac Najkrajša dolžina obdelovanca: 350 mm Premer žaginega lista: 500 mm - Krmilje ne deluje Dimenzije (D x Š x V): 7200 x 1700 x 1850 mm Teža: 1250 kg Sprostimo prostor Ugodni stroj – idealno za izvoz

Stanje: dober (rabljeno), Leto izdelave: 2014, Overall dimensions: 12.4 x 18.8 m incl. safety fencing Number of baskets per furnace: 2x 1,170 x 1,150 x 2,000 mm Reference load weight (net/gross): 1,285 / 2,185 kg Max. load weight (net/gross): 2,000 / 2,700 kg Load dimensions: 2,050 x 1,150 x 2,800 mm, external dimensions: 2,950 x 6,400 x 7,800 mm Maximum temperature: 600 °C Operating temperature: 510 °C Total heating capacity: 2 x 81 kW = 162 kW electric Quenching water bath: type = QT-24.16.57/71E Max. bath temperature: 70 °C, capacity = 20 m^3 2 tempering furnaces: type = ADBF-24.16.30/250E External dimensions: 2,800 x 4,850 x 4,000 mm Ledpfx Aey H Ih Aebxoac Max. furnace temperature: 250 °C Operating temperature: 180 °C Total power: 2 x 40.5 kW = 81 kW electric loading/unloading track, GEA cooling coil, safety enclosure, safety devices, plant control system 1,056 annealing baskets with post pallets System already dismantled, packed and in storage

Stanje: zelo dobro (rabljeno), Leto izdelave: 2014, številka stroja/vozila: 2014/53/40, Funkcionalnost: popolnoma funkcionalen, moč: 3 kW (4,08 KM), vhodna napetost: 400 V, vhodna frekvenca: 50 Hz, vrsta vhodnega toka: trifazni, največja višina reza: 200 mm, premer žaginega lista: 520 mm, izvrtina žagine plošče: 50 mm, največja hitrost vrtenja: 2.800 obr/min, Oprema: dokumentacija / priročnik, zaščitni pokrov žaginega lista, GRAULE ZS 200 N Naprodaj zaradi prenehanja obratovanja podjetja. K žagi spadata 2 transportna valjčna tira, 1 x 7000 mm in 1 x 4000 mm, 1 x laserski prikaz linije reza, ter sistem za odsesavanje ostružkov in rezervno rezilo. Za večjo preciznost in natančnost je mogoče kote nagibov nastaviti digitalno prek nadzorne plošče. Stroj je bil redno vzdrževan in kalibriran s strani specializiranega podjetja. Lsdpfjzaq Siox Abxeac

Stanje: dober (rabljeno), KREISSÄGE Technische Merkmale: * Hydraulischer automatischer Vorschub Lasdpfx Ao Dv Rbobxoc * Sägeblattdurchmesser 400 mm

Leto izdelave: 2018, stanje: rabljeno, Podtalna ročna krožna žaga za žagin list do D 250 mm Laodpfsy Nm N Rsx Abxec Obseg nagiba za poševne reze -45°/90°/+30° Delovno območje (Okrugla) 90° 80 mm (Okrugla) 45° 80 mm (Kvadratna) 90° 70 mm (Kvadratna) 45° 65 mm 220 V

Leto izdelave: 2004, stanje: dober (rabljeno), Podtalna žaga ročna uporaba Laedsy Nm Hiepfx Abxoc za žagin list do premera 300 mm zajem pod kotom levo-desno do 45° ročna pršilna naprava za emulzijo robustno ohišje iz jekla in delovna miza iz sive litine 400V premična na podstavku