Lematec Gręžimo Mašina pirkti naudotą (15 980)

Sąlyga: naudotas, Gamybos metai: 2016, bendras ilgis: 4 300 mm, bendras plotis: 1 880 mm, bendras aukštis: 2 350 mm, Savo svoris: 1 310 kg - Pagaminimo metai: 2016 - Dokumentacija prieinama: Ne Ijdpfexy Rk Rox Afwoa - CE ženklinimas: Taip - CE sertifikatas prieinamas: Ne - Serijos numeris: AB/226310 - Transportavimo matmenys: 4300mm x 1880mm x 2350mm (ilgis x plotis x aukštis) - Transportavimo svoris [kg]: 1 310 kg - Transportavimo paketų [vnt.]: 1 Finansinė informacija PVM: Nurodyta kaina be PVM PVM/skirtumo apmokestinimas: PVM atskaitomas verslininkams Pristatymas ir įrenginių priėmimas įmanomas bet kada bet kokiai pramoninei įrangai. Glenn Smeets

Sąlyga: naudotas, x eiga 400 mm Ijdpsxu Nxpefx Afwoa y eiga 250 mm Įrankio laikiklis ISO 40 Sukimosi greitis 40 - 3.150 aps./min Stalo matmenys 630 x 300 mm Stalo apkrova 150 kg Mūsų vertinimu, įrenginys yra geros naudotos būklės ir gali būti apžiūrėtas prijungus prie elektros pagal susitarimą. Priedai, nuotraukose matomi įrankiai ir tvirtinimo priemonės į pristatymo komplektą įtraukiami tik tuo atveju, jei tai nurodyta papildomoje informacijoje. Techninių duomenų ir informacijos pakeitimai bei tarpinis pardavimas galimi!

Sąlyga: naudotas, Gamybos metai: 2016, TECHNICAL DATA AXES Max. workpiece dimensions X-Y-Z mm 3050 x 800 x 50 Min. workpiece dimensions X-Y-Z mm 300 x 90 x 10 Working area drilling/grooving mm 0 x 800 / 0 x 800 Travel of X axis mm 750 Max. traverse speed X-Y axes m/min 25 DRILLING UNIT Vertical spindles Quantity 7 (4X-4Y, one shared) Horizontal spindles (Y axis) Quantity 2 (1+1) Horizontal spindles (X axis) Quantity 1 Fixed grooving saw (direction) X Saw blade diameter mm 100 Max. saw blade thickness mm 5 Motor output kW (HP) 1.5 (2) Spindle speed rpm 3350 Saw speed rpm 4300 INSTALLATION Power supply V (Hz) 380 / 400 (50 / 60) Installed power KVA 4.5 Compressed air requirement bar 6 Compressed air consumption Nl/cycle 90 Extraction requirement m³/h 1200 Extraction air velocity m/sec 20 Extraction nozzle diameter mm 80+80 F10L Drilling unit Includes: - 7 independent vertical spindles - Drill shank D10 mm - Distance between spindles 32 mm - 2 horizontal drilling heads, 1 in X direction with one drill, 1 double drilling head in Y direction (1+1 drill shank D10 mm) - Speed 3350 rpm - 1 integrated sawing unit in X (max. diameter 100 mm) - Saw blade speed 4300 rpm - Motor output 1.5 kW - Vertical pneumatic stroke per spindle 70 mm - Horizontal pneumatic stroke of drilling unit Workpiece positioning and aggregate drive A CNC-controlled vacuum suction system clamps and positions the workpiece sequentially under the working unit during machining. X and Y axis movement is on THK guides with transmission via reinforced toothed belts. Z axis movement is pneumatic on ball-bushing guides with positioning via adjustable stops. Positioning of working units is achieved with DC technology and drives. CNC CONTROL The control was specially developed for use in drilling and milling machines. CN - 7" color display with touchscreen functionality - Alphanumeric keyboard - Self-diagnosis and operator language-specific error or fault messages Programming - Programming via CN - automatic optimization of drilling operations - Option for panel zero-point shift - Storage and import of drilling programs via USB dongle - Import of drilling programs from external CAD/CAM software Configuration - User interface in same language as instruction manuals Graphical representation of unit configuration Vacuum suction system "B-Power" Vacuum suction cup with double vacuum connector, recommended for highly porous panels (e.g. light MDF). Machine operation interface Software Xilog Maestro USB Hardware and software requirements: - Operating system: Windows XP Professional (SP2), Windows Vista or Windows 7 - Processor: Intel compatible, 2GHz min; multicore processor recommended - RAM: 1GB min., 2GB recommended - Free disk space: 5GB - Graphics card: OpenGL compatible (The code includes a DVD for installation and a USB key) Xilog Maestro features Programming - parametric, graphical programming - Supported programming with graphics and syntax assistance for drilling operations - Ability to create and save machining macros Integrated additional functions - Self-diagnosis and operator-language error or fault messages - User interface in Iodpjvvi I Rsfx Afwea

Sąlyga: naudotas, Gamybos metai: 2000, Gręžimo galia plienas / ketaus 40, 50 mm Iškyša 280 mm Gręžimo eiga 125 mm Veleno tvirtinimas MK MK 4 Veleno sukimosi greitis 20–2000 aps./min. Stalo eiga 500 mm Mašinos svoris apie 275 kg Stalo dydis 420 x 340 mm Atstumas tarp darbinio veleno ir tvirtinimo paviršiaus maks. 500 mm Iedpjxyab Ssfx Afwea Darbinė įtampa 400 V Jungiamoji galia 0,75 kW

Sąlyga: naujas, The TSB 35 is a powerful column drilling machine from the KNUTH range of bench drills, distinguished by its compact design and high drilling capacity of 35 mm. Thanks to its high versatility, it is ideal for a wide range of applications, whether in steel construction or repair workshops. The TSB 35 features a swiveling drill head design, allowing for angled drilling, as well as a main spindle gearbox that provides high torque. With a sturdy cast iron housing, a wide speed range from 125 to 3030 rpm, and an automatic quill feed, this machine offers both precision and performance. It comes standard with a thread cutting device, an LED work lamp, and a coolant system. These robust features make the TSB 35 an ideal choice for your workshop. Request a quote today to learn more about the options the column drilling machines category and the upright drilling machines product group can offer you. Iedpfxoqa Avfo Afwoa

Sąlyga: naudotas, Naudota mašina Prieinamumas: apie 2026 m. sausio vidurys/pabaiga Ijdexwz N Ejpfx Afwea Vieta: Hesenas

Gamybos metai: 2014, Sąlyga: labai geros būklės (naudotas), Achse 920 mm x-Axis 3000 mm Iedpfx Ajfmdcqefwsa Material thickness Z 12 mm - 30 mm Feed speed 20 m/min. A-Axis 360 degrees Minimum dimensions: Plate: x = 300 mm y = 120 mm z = 12 mm The machine is equipped with a 4-position drill chuck and a saw blade. Maximum and minimum hole diameters that can be drilled: 3 - 35 mm The saw blade runs in the X direction Max. cutting depth with saw blade: 10 mm Motor 0.75 HP, 400 Volt Required extraction capacity: 2,300 m³/h Location: arriving at stock 54634 Bitburg - immediately available -

Sąlyga: naudotas, Gamybos metai: 1981, Darbinis plotis: 1200 mm Galia (kW): 6 kW Darbo gylis: 130 mm Storis: 50 mm Radialinis gręžtuvas, radialinė gręžimo staklė Gamintojas: MAS Kovosit Modelis: VO 50 Svirties ilgis: 1600 mm Grąžto ilgis: 1200 mm Gręžimo gylis: 130 mm Prašvietimas: 50 / 60 mm Veleno apsisukimų dažnis: 28-2500 aps./min Iedpfx Ajwnhciofwea Įtaka: MK6 Variklio galia: 6 kW T formos griovelių stalas: 1500x1000 mm Staklių matmenys: 2900x1200x3000 mm - Pagaminimo metai: 1981 - Dokumentacija prieinama: Ne - CE sertifikatas: Nėra - Serijos numeris: 50 / 1600 Finansinė informacija PVM: Nurodyta kaina yra be PVM PVM / Skirtumo apmokestinimas: PVM atskaitomas įmonėms Pristatymas ir įsigijimas mainais visada galimi visoms pramonės šakoms

Sąlyga: naudotas, Gamybos metai: 1980, Gręžimo velenų skaičius: 23 vnt. Žingsnis: 32 mm Grąžto tvirtinimas: įsukama srieginiu būdu Valdymas: kojiniu pedalu Gręžimo kryptis: iš viršaus ir iš galo Pasukimas: pneumatinis Maks. pralaidimo plotis: 720 mm Medžiagos spaustuvų skaičius: 2 vnt. Medžiagos spaudimo tipas: pneumatinis Konstrukcija: mobilus Kamštelių sistema: eilėms su skylėmis ir konstrukcinėms eilėms Matmenys: 1300 x 1200 x 1700 mm Svoris apie: 365 kg Variklio galia: 2,2 kW Sandėliavimo vieta: Nattheim Ijdpfxjwkir Ds Afwea

Sąlyga: naudotas, Gamybos metai: 2005, Gręžimo galia plienui / pilkoji ketus 30,40 mm Iškyša 280 mm Gręžimo eiga 125 mm Veleno tvirtinimas MK MK 3 Veleno apsukos 125–4000 aps./min Stalo eiga 500 mm Mašinos svoris apie 275 kg Stalo dydis 420 x 340 mm Atstumas tarp darbinio veleno ir tvirtinimo paviršiaus maks. 500 mm Darbinė įtampa 400 V Isdpfjxyab Eex Afwsa Jungiamoji galia 0,9/1,45 kW Mašina sukasi į kairę ir į dešinę.

Gamybos metai: 2025, Sąlyga: naujas, Condition: New Year of manufacture: 2025 Stock number: 030161 Delivery time: approx. 2 - 4 weeks from order Country of origin: Germany Price: €7,170.90 Leasing rate: €138.40 Available stock: 1 Drilling capacity in steel: 23 mm Spindle taper: MK 2 Throat depth: 260 mm Spindle speeds: 20 - 2000 rpm Motor: 1.5 kW Thread cutting capacity: M16x1 Length: 430 mm Width: 715 mm Height: 1800 mm Weight: 290 kg Feed: manual mm/rev Column diameter: 110 mm Distance spindle - table: 230 - 850 mm Table size: 420 x 340 mm Quill stroke: 100 mm Continuous/normal drilling capacity: 23/25 mm (in E335/ST60) Manual feed Digital display for speed and drilling depth Main switch Thread-cutting device Control panel with OLED display Robust, high-quality drill head cover with ergonomically angled front LED lighting Quick-adjusting and ergonomic depth stop Stepless speed control via central dial Emergency stop push-button Thermal overload protection Spindle stop Drill guard with electrical interlock Connection cable with CEE plug Iodpfjxcg Ecox Afwja OPTIONS: Drilling package 3 (vice & keyless drill chuck) Coolant system LED lighting with articulated arm

Sąlyga: naudotas, Gamybos metai: 1997, Naudota mašina Iedsxwz Nfjpfx Afwja Pagaminimo metai: 1997 Įranga ir techniniai duomenys: - tylus veikimas - velenas MK 3 - variklis 400 V 0,55 kW Prieinamumas: apie 2026 m. balandžio vidurį Sandėliavimo vieta: Hessen

Sąlyga: naujas, Gamybos metai: 2022, Drilling depth: 170 mm Drilling width: 250 mm Spindle speed: 2,800 rpm HOLZKRAFT Mortising Machine LLB 30 Entry-level mortising machine with single-lever operation, eccentric clamp, dowel boring device, and handwheel-operated drill head height adjustment with digital display for fast and precise work. Worktable (L x W): 580 x 300 mm Drilling width: 250 mm Drilling depth (at 90°): 170 mm Drill head height adjustment: 200 mm Worktable swivel range: non-rotatable Tool holder: WESCOTT drill chuck Clamping range: Ø 0 - 20 mm Spindle speed: 2,800 rpm Motor power: 2.2 kW | 400 V – 50 Hz Extraction port: Ø 70 mm Dimensions (L x W x H): 1500 x 920 x 1400 mm Net weight: approx. 160 kg Includes dowel boring device, eccentric clamp, digital height adjustment display, Wescott drill chuck 0-20 mm HOLZKRAFT Mortising Machine LLB 30 – Entry-level machine for professional mortising – Made in EU Easy operation with single-lever control for fast and precise work Drill head with hardened prism guides and ball contact bearing system Drill head height adjustment with handwheel and digital readout Manual eccentric clamp Robust steel and cast-iron construction Powerful three-phase motor Dowel device with indexing positions: 16 | 22 | 27 | 32 mm Clamping stops for quick and easy adjustment of the drill head travel Scope of delivery HOLZKRAFT Mortising Machine LLB 30 Drill head height adjustment with handwheel and digital display Dowel boring device with index Eccentric clamp Wescott drill chuck 0 - 20 mm Iodpfxjih H A Rs Afwja Operating manual with exploded views, spare parts lists, and CE certificate of conformity Location: Ex stock 54634 Bitburg - immediately available -

Sąlyga: geras (naudotas), Gamybos metai: 2018, Naudota Huvema stalinė gręžimo staklė Tipas HU 32 NTI Pavaroma krumpliaračiu Isdpfx Afjxwibcswsa Su sriegimo funkcija

Sąlyga: naudotas, Gamybos metai: 2002, Gręžimo galia 25 mm, griebtuvo tvirtinimas MK 3 Sandėliavimo vieta: Nattheim Ijdpjvvi Aujfx Afwea

Gamybos metai: 2025, Sąlyga: naujas, Condition: New Year of manufacture: 2025 Stock number: 030140 Delivery time: approx. 2 - 4 weeks from order Country of origin: Germany Price: €13,101.81 Leasing rate: €251.55 In stock: 1 unit Drilling capacity in structural steel: 30 mm Spindle taper: MT 3 Throat depth: 280 mm Speed range, step 1: 125 - 4000 rpm Motor: 0.9 / 1.45 kW Thread cutting capacity: M20 Length: 820 mm Width: 520 mm Height: 1900 mm Weight: 320 kg Feeds: 0 - 300 mm/rev Distance spindle - table: 240 - 790 mm Table size: 420 x 340 mm Quill stroke: 125 mm Iodpfxexcg D Eo Afwja Continuous/nominal drilling capacity: 25/30 mm (in E335/ST60) Automatic feed Digital speed, drilling depth, and feed rate display New touch display Drilling depth adjustment with fine setting and undervoltage release Emergency stop button Infinitely variable speed control Table height adjustment via rack-and-pinion Connection cable (1.5 m) with CEE plug Drill guard with electrical interlock Thermal overload protection Electronically infinitely variable feed including spindle monitoring Chip clearing device Thread cutting device, maximum thread cutting capacity M20, thread cutting depth adjustable via digital depth display Drilling depth cut-off; programmable; easy to operate Drilling crosshair with push button for feed activation/deactivation Choice of transparent or black safety guard (stock machine equipped with transparent guard) Standard LED lighting OPTIONS: Drilling package 5 (vice & quick-action drill chuck) Coolant system LED lighting with articulated arm

Sąlyga: beveik kaip naujas (naudotas), Gamybos metai: 2018, Panhans Mortising Machine Type: 116/10 - Max. drilling depth: 145 mm - Max. drilling length: 240 mm - Height adjustment: 135 mm - Extraction port ø 100 mm - Colour: RAL 7035 Light Grey / RAL 5000 Violet Blue - Net weight approx. 200 kg Robust German engineering Professional slot mortising and precise dowel drilling Ijdpfx Afsxgu Tvjwoa Fixed table, smooth-running mobile drilling motor Mobility device for increased flexibility Cast iron table 700 x 380 mm, thick-walled and heavily ribbed Smooth-running cross slide with adjustable ball guides for lateral and depth adjustment Height adjustment via handwheel and scale; drilling depth stop via scale; drilling length limitation via adjustable left and right side stops Drilling motor power: 1.3 kW / 1.8 HP, equipped with motor brake and practical tool tray Includes emergency stop button High-precision three-jaw drill chuck, clamping range 5 – 20 mm Dowel drilling attachment for line hole drilling with indexing roller: 16, 22, 25, and 32 mm, high-precision milled indexing, locking via spring-loaded index pin Removable frame stop with index pin for positions: centre, left, right CE compliant GS tested Includes additional special accessories: - Single-lever operation - Handwheel with dial gauge Location: available ex stock 54634 Bitburg - immediately available -

Sąlyga: naudotas, Gamybos metai: 2000, Stalo dydis: 580 x 280 mm Gręžimo stalo aukštis: 800 mm Gręžimo gylis: 150 mm Gręžimo ilgis: 225 mm Aukščio reguliavimas: 180 mm Pasukimo kampas: 2x 45° Grąžto apsukos: 2800 aps./min. Griebtuvio diapazonas: 0-20 mm Ištraukimo jungties skersmuo: 80 mm Variklio galia: 2,2 kW / 3 AG Reikalinga vieta: 850 x 1000 x 1050 mm Svoris: apie 240 kg Atsargų vieta: Tiekėjas Isdpfx Asxya H Iefwea

Sąlyga: naujas, Gamybos metai: 2024, Panhans Mortising Machine Type: 116/10 - Maximum drilling depth: 145 mm - Maximum drilling length: 240 mm - Height adjustment: 135 mm - Extraction port diameter: 100 mm - Colour: RAL 7035 Light Grey, RAL 5000 Violet Blue - Net weight: approx. 200 kg Robust German engineering Professional mortising and precise dowel drilling Fixed table, easy-running movable drilling motor Travel gear for increased mobility Cast iron table 700 x 380 mm, thick-walled and heavily ribbed Smooth-running cross support with adjustable ball guides for lateral and depth adjustment Height adjustment via handwheel and scale, boring depth stop via scale, drilling length can be limited precisely using side stops (left and right adjustable) Drill motor power: 1.3 kW / 1.8 HP with motor brake and practical tool shelf Includes emergency stop button High-precision three-jaw drill chuck, clamping range 5–20 mm Dowel drilling attachment for line boring with notched roller (16, 22, 25 and 32 mm), high-precision milled indexing, fixing via spring-loaded index pin Ijdpfxsr Eli To Afwsa Plug-in frame stop with index bolt for the following positions: Centre, Left, Right CE-compliant GS-certified Includes additional special accessories: - Single-lever operation - Handwheel with dial gauge Location: Ex stock 54634 Bitburg - Immediately available -

Sąlyga: naudotas, Gamybos metai: 2024, Dowel Hole Boring Machine GANNOMAT "DB 21400V, 3Ph, 50Hz / 1.5 kW" – complete in standard configuration, equipped with: - Fully automatic electronic control with pulse operation via foot pedal: clamping – drilling – releasing; electrical intermittent operation. - Automatic retraction of the drilling unit upon reaching the preset drilling depth. - Automatic extension of drilling depth for face-end drilling. This eliminates the need to manually adjust the drilling depth when switching from flat-face to end-face drilling (+10 mm, e.g., with dowel length 35 mm, drilling depth flat face 14 mm, drilling depth end face 24 mm). - 1 drilling beam with 21 spindles, 32 mm spacing, 1.5 kW motor (drilling feed 0–70 mm). Includes 21 quick-change chucks (Ganner system) for easy drill bit replacement. - Simple swiveling of the drilling unit from 0° to 90°, supported by gas cylinder. - 1 clamping carriage adjustable along the Y-axis, with 3 pneumatic clamping cylinders, for workpieces up to max. 80 mm height. Ideal positioning system comprising: - 1 positioning rail, 1800 mm, for shelf drilling (aluminum profile 40 x 40 mm) with 3 flip stops - With quick-change system, easily convertible from right to left for mirrored shelf drilling in carcass construction. Also suitable for line boring in System 32. - Side stops and position settings, as well as the drilling height adjustment over the support table, using mechanical digital counters. - Side stops are easily swung out for the shortest possible changeover times between carcass, frame, and line boring operations. - Clamping arms for the clamping carriage are designed for line boring positions up to max. 300 mm. - Ideal three-stage tooling system. - 1 set of dowel drill bits: - 5 tungsten carbide dowel drill bits, Ø 8 x 77 mm, right-hand - 4 tungsten carbide dowel drill bits, Ø 8 x 77 mm, left-hand Base machine Dowel Hole Boring Machine GANNOMAT "DB 21400V, 3Ph, 50Hz / 1.5 kW" as above. Additional features: - Suction funnel, dust-tested, Ø 120 mm Iedpfx Afoxnlflswea - 1 set for line boring in system

Sąlyga: labai geros būklės (naudotas), Gamybos metai: 1993, Grass hinge and row drilling machine Iodpfx Afevzb Dnswja Used, good condition Model BBM-R Year of manufacture: 1993 Machine no. 931137 Vertical drilling head 1st hinge 2nd hinge 3rd hinge Turret head for selection of drilling head Row drilling head with positioning pins Number of spindles in line: 15 pcs with 1 pressing die Stop rulers Weight: 95 kg Location: 54634 Bitburg, free loaded, unpacked Delivery in as-is condition as inspected

Sąlyga: naujas, Gamybos metai: 2024, Hoku Houfek Long Hole Boring Machine LLB VD 20 R Excellent condition - Top machine - Motor: 1.5/1.9 kW Cross travel (Y-axis): 250 mm Longitudinal travel (X-axis): 340 mm Vertical travel (Z-axis): 200 mm 2 speeds: 1,440 and 2,880 rpm Single-lever dowel boring unit with divisions: 16 - 22 - 25 - 32 mm 2 manual eccentric clamps Iodpfx Aju Agzxefwoa Manual digital display for drill height Table dimensions: 700 x 400 mm Drill chuck max. diameter: 20 mm Table rotatable +/- 45° Weight: approx. 345 kg Available immediately from stock in 54634 Bitburg Subject to prior sale,

Sąlyga: beveik kaip naujas (naudotas), Gamybos metai: 2025, GANNOMAT "JUNIOR 323" FRAME DOWEL AND SLOT MORTISER Complete in standard configuration according to price list 01/22/D, with: - Precision collet chuck for ER 40 collets, Ø 3–26 mm. Includes collets Ø 10 / 13 / 16 / 20 - 1.5 kW motor, 2800 rpm - Position adjustment via digital counter - Position adjustment for 2 levels, pneumatic (0–100 mm) - Maximum drilling depth 150 mm - Precision indexing rail with 12 mm spacing, featuring: - Center detent and cross adjustment 320 mm - 2 pneumatic safety clamping cylinders - Complete stop system comprising: 1 central stop and 1 stop for extra-wide frames 1 stop rod, approx. 850 mm long (can be switched left to right) 2 flip stops - Slot mortising attachment, lowerable, with 2 program cams (400V, 3Ph, 50Hz, 1.5kW) Extraction funnel Ø 80 mm, dust-tested Central mitre stop 45° Pair of auxiliary workpiece supports, swivel-mounted (left and right) Drill head receptacle Isdpfx Aexdttiofwea 3-spindle drill head, 32 mm pitch (can be rotated 90°) Chassis with 4 castors, for easy relocation of the machine Availability: Immediately – short notice –

Gamybos metai: 1991, Sąlyga: labai geros būklės (naudotas), Frommia Gang Drilling Machine Type: 770 Drill Chuck: Keyed chuck Max. Drill Diameter: 1 - 20 mm Spindle Speed: 2,900 rpm Max. Drilling Depth: 145 mm Operation: Two-handed control Height Adjustment: Handwheel Height Readout: Scale Clamping Cylinder Actuation: Manual eccentric lever Design: Movable drill head Table Width: 560 mm Table Depth: 300 mm Working/Table Height: 900 mm Weight approx.: 220 kg Isdpfx Aelc Eursfwja Dimensions: 1200 x 900 x 1200 mm Motor Power: 1.5 kW Electrical Connection approx.: 400V / 50 Hz / 4.8 A / 2.2 kW Accessories: Assorted drill bits Location: Ex stock 54634 Bitburg - Immediately available - Subject to prior sale

Sąlyga: labai geros būklės (naudotas), Gamybos metai: 1995, naudotas, geros būklės, mažai naudotas, puiki komplektacija Gamintojas: Panhans Tipas: 116H Pagaminimo metai: 1995 Mašinos Nr.: 640 GS – patikrinta dėl medienos dulkių Valdymas dviem svirtimis Griebtuvas 20 mm Kaiščių gręžimo įrenginys su 4 žingsniais 45° kampinis ribotuvas, reguliuojamas be pakopų Perkeliama Pneumatiniai ruošinio spaustuvai – 2 vnt. Pneumatinis aukščio reguliavimas su pedalu Iodpfxsxgu Uaj Afwja Ištraukimo jungtis D 100 mm Reikalinga vieta apie 950 mm x 1000 mm x 1300 mm Svoris apie 200 kg Sandėliavimo vieta: 54634 Bitburg, pakrauta laisvai, neįpakuota Perdavimas tokios būklės, kokia apžiūrėta Be garantijos ir atsakomybės už kokybę