Kk-Industries Zarezovalni Stroj S Fiksnim Kotom 90 ° nakup rabljenega (110.505)

Stanje: novo, Sheet length: 1100 mm Nwodpfx Asgh Ndmoi Eek Sheet thickness: 6 mm Motor: 7.5 kW Width: 2250 mm Length: 1750 mm Height: 1400 mm Standard equipment: - NC control - Programmable motorized backgauge with 750 mm travel - Shadow line lighting - 1 piece angle stop with scale - 2 sheet support arms - 1 sheet support arm (for models 1106, 1306, 1505) - Finger guard - Ball transfer table - Knife angle easily adjustable from the front - Ball screw spindle - Stroke counter - Portable foot pedal with emergency stop button - Light barrier on the rear guards

Stanje: novo, Sheet length: 1560 mm Sheet thickness: 5 mm Dimensions (LxWxH): 2250 x 2250 x 1400 mm Standard equipment: - NC control unit - Programmable motorized backgauge with 750 mm travel - Shadow line lighting - 1 piece angle gauge with scale - 2 sheet support arms - 1 sheet support arm (for models 1106, 1306, 1505) - Finger guard - Ball transfer table - Blade angle easily adjustable from the front - Ball screw spindle - Cut counter - Portable foot pedal with emergency stop button - Light barrier on the rear safety guard Nwodegick Iepfx Ai Eek

Stanje: novo, Blechlänge: 2060 Blechstärke: 3 Standardzubehör NC-Steuerung Programmierbarer, motorisierter Rückanschlag mit 750 mm Hub Schattenlinienbeleuchtung 1 Stück Anschlagschiene mit Skala 2 Stück Materialstützarme 1 Stück Materialstützarm (bei den Modellen 1103, 1303, 1503) Fingerschutz Schneidlinienbeleuchtung Kugelgewindetrieb Schnittzähler Tragbares Fußpedal mit Not-Aus-Schalter Lichtschranke an den hinteren Schutzvorrichtungen Optionen Nwjdpsgick Ssfx Ai Eok 0–180° verstellbarer Winkelanschlag: 910 EURO Pneumatisches Blechstützsystem (hinten): 3.200 EURO Lichtschranke hinten (Sicherheit): 1.620 EURO Elgo P40T Touchscreen-Steuerung: 1.960 EURO Klinge für Edelstahl (statt Standard): 1.000 EURO Ersatzklingen (Ober- und Untermesser, 1 Satz): 2.350 EURO

Stanje: novo, Sheet length: 3280 mm Sheet thickness: 10.0 mm Total power requirement: 11 kW Weight approx.: 8,650 kg Dimensions (LxWxH): 3800 x 2050 x 2150 mm Our premium brand KKI CNC GUILLOTINE SHEAR swing-beam version Nwodpfx Aijd Nkt Ue Ejk Model 3210 has everything you need for perfect cutting results. KKI CNC swing-beam guided guillotine shear Thanks to robust and durable mechanics and hydraulics, a precise CNC-controlled backgauge with a ball screw, and user-friendly CNC control, KKI guillotine shears are highly efficient production machines. Shears for sheet thicknesses from 6 mm up to 20 mm and cutting lengths from 3 to 6 meters belong to our standard portfolio. Of course, greater sheet thicknesses and cutting lengths are available on request. Their long service life is ensured by an especially sturdy, fully welded frame construction. The entire machine body, cutting beam, and backgauge are resistant to torsion and deformation, enabling top cutting quality. By entering the sheet thickness and material type, the CNC control automatically calculates the required cutting angle and blade gap. Our premium brand KKI CNC GUILLOTINE SHEAR swing-beam version Model 3210 has everything needed for perfect cutting. Technological advantages: - Fast and precise cuts - Stable, durable frame construction - Automatic blade gap and angle adjustment - Easy operation - Low maintenance costs - High level of safety - Use of components from renowned manufacturers - Low unit costs Technical specifications: - Sheet thickness: 10 mm - Cutting length: 3,280 mm - Cutting angle: 0.3 - 1.8° - Backgauge with CNC control - Motor power: 11 kW - Length: 3,800 mm - Width: 2,050 / 2,960 mm - Height: 2,150 mm - Weight: 8,650 kg • Swing-beam version • CNC control - Backgauge - Cutting angle - Blade gap - Cutting length • Ball screws for backgauge • Ball transfer table • Side gauge • 2 support arms • 1,000 mm flip-up finger guard Includes simple version of pneumatic sheet support We have many references!

Stanje: novo, Laser power: 3 Loading capacity: 1250x Travel X: 2020 mm Travel Y: 4050 mm Travel Z: 350 mm Positioning accuracy: 0.05 mm Repeatability: 0.03 mm Table exchange time: approx. 10 sec Cooling system: Water chiller Weight approx.: 11,500 kg Dimensions (LxWxH): 4400 x 10,000 x 2120 mm The FLC series is a fast, sensitive, reliable, and cost-effective fiber laser cutting machine. It is a high-efficiency laser cutting machine with top-tier standards. It supports a laser power of up to 30,000 W, making it an excellent choice for cutting thick plates. FLC fiber laser cutting machines are commonly used for the fabrication of agricultural machinery, textile machinery, food machinery, construction machinery, elevators, and other large machines and equipment. It is the ideal cutting machine for those looking to outsource their cutting operations. Enables easy blowing, cutting, pausing, calibration simulation, etc., with the wireless remote control. Comes with standard nesting software, enabling fast, operator-independent part preparation for cutting. Features Flycut cutting function. With its double shuttle table, cutting can continue without waiting. All our machines are manufactured to European standards and are CE certified. Our FLC-type machines include nozzle cleaning and a dual camera system. Available cutting areas: 1.5 x 3 m, 2 x 4 m, or 2 x 6 m. Our laser head features autofocus and an active anti-collision function, plus an auto-view function that detects and automatically avoids obstacles. Cutting heads are equipped with automatic cooling. The bridges we use in all our machines consist of a welded construction made from aluminum alloy sheets and are one-piece. This ensures rigidity and prevents deformation under impacts, overlaps, or loads. Additionally, thanks to being three times lighter than steel profile bridges, higher speeds and accelerations can be achieved with less motor power. Accessories included: - Water chiller - Control cabinet cooling - Automatic focus head - Nesting software - 19-inch touch CNC control - Fly cutting - Nozzle and lens starter kit - Scrap drawers - Automatic table changer - Automatic nozzle cleaning - CE compliance - On-site machine training - Wireless remote query - Automatic lubrication system Nwedpfx Aetuyf Hji Esk - Dual camera SPECIFICATIONS VALUE Working area: 2000 x 4000 mm Loading capacity: 1200 kg XY axis travel: 2020 x 4050 mm Z axis travel: 350 mm XYZ axis guide: 4-point ball cage XY axis drive system: Rack and pinion Z axis drive system: Ball screw XY axis speed: 100 m/min Z axis speed: 30 m/min XY positioning accuracy: 0.05 mm XY repeatability: 0.03 mm Table exchange time: 10 sec Laser source: Raycus / Hans / JPT Laser power output: 2 / 3 / 4 / 6 / 8 / 12 / 20 kW CNC control system: Fscut Laser cutting head: Raytools / BOCI / WSX Supported gases: Air/Oxygen/N...

Stanje: novo, Working area: 2000 x 6000 mm Loading capacity: 1450 kg X-axis travel: 2020 mm Y-axis travel: 6050 mm Nwjdpjruwb Aefx Ai Eok Laser power: 12 kW Positioning accuracy: 0.05 mm Repeatability: 0.03 mm Weight approx.: 11,500 kg Dimensions (LxWxH): 10,000 x 4,400 x 2,120 mm The FLC Series is a fast, precise, reliable, and cost-effective fiber laser cutting machine. It is a high-efficiency, premium-standard laser cutting machine, supporting laser power up to 30,000 W—making it an excellent choice for cutting thick sheets. FLC fiber laser cutting machines are commonly used in the manufacturing of agricultural machinery, textile machinery, food processing equipment, construction machinery, elevators, and other large-scale machines and installations. It is an ideal cutting solution for those looking to outsource. The wireless remote control allows easy blowing, cutting, pausing, calibration simulation, and more. The standard nesting software program prepares parts for cutting extremely quickly and without manual intervention. Flycut function is also available. Featuring a double exchange table, the machine enables continuous cutting without downtime. All our machines are manufactured to European standards and CE certified. Our FLC models feature nozzle cleaning and dual camera system. Available cutting formats: 1.5 x 3 m, 2 x 4 m, or 2 x 6 m. The laser head features autofocus, active anti-collision, and an auto-view function, which detects obstacles and moves automatically. Cutting heads are equipped with automatic cooling. The bridge used on all machines is a single-piece, welded construction made of aluminum alloy plates. The monolithic structure ensures rigidity and prevents deformation from impacts, overlaps, or stresses, while its weight—three times lighter than steel-type bridges—enables high speed and acceleration with lower motor power requirements. Accessories included: - Water chiller - Electrical cabinet cooling - Automatic focus head - Nesting software - 19-inch touch CNC controller - Fly cutting - Nozzle and lens starter kit - Scrap drawers for cut parts - Automatic table exchanger - Automatic nozzle cleaning - CE conformity - On-site machine training - Wireless remote monitoring - Automatic lubrication system - Dual camera system

Leto izdelave: 2016, stanje: rabljeno, KK PULLTESTER KKP03A / Series 6 Year of manufacture: 2016 The KK Pulltester is a testing device for quality assurance in the graphic arts industry. It precisely measures the adhesive bond strength of individual pages in catalogues, paperbacks, magazines, brochures, and books. Njdpfewcd Iqox Ai Ejwk The number of pages to be tested, page number, job number, and book block length are programmed before the measurements. Technical specifications: Language: German Book block width: approx. 5 - 35 cm Book block length: approx. 7 - 40 cm Book block thickness: approx. 7 cm

Stanje: novo, Pressure: 200 Bending length: 3200 mm Frame width: 2700 mm Installation height: 400 mm Stroke length (max.): 200 mm Throat depth: 350 mm Dimensions (LxWxH): 3700 x 1700 x 2700 mm Weight approx.: 14,000 kg CNC Press Brake 3200 mm x 200 t Standard equipment: ----- Nedpjtvhxmofx Ai Eewk Robust construction CNC axes Y1, Y2, X, and R CNC crowning device motorized with CNC control Original DELEM DA 58 T 15" touchscreen CNC control Backgauge with linear guide and ball screw, 4 stop fingers 2 sheet support arms Laser safety device on upper beam Quick clamping system for upper tooling Upper tool system: Promecam Amada segmented and gooseneck Multi-V die system compatible with both Promecam and Amada systems CE-certified safety equipment

Stanje: novo, Pressure: 200 Bending length: 3200 mm Frame width: 2700 mm Installation height: 400 mm Maximum stroke length: 200 mm Throat depth: 350 mm Dimensions (LxWxH): 3700 x 1700 x 2700 mm Approx. weight: 14,000 kg CNC Press Brake 3200 mm x 200 to Standard equipment: ----- Robust construction CNC axes: Y1, Y2, X, and R axis CNC-controlled motorized crowning system Original DELEM DA-58T CNC control, 15-inch touchscreen Back gauge with linear guide and ball screw, with 4 stop fingers 2 sheet supporter arms Laser safety device on upper beam Nwjdpfx Aiotvhxis Eek Quick-clamp system for upper tool Upper tool system: Promecam/Amada segmented, gooseneck design Multi-V die system, compatible with both Promecam and Amada systems CE-compliant safety equipment

Stanje: novo, Pressure: 125 Bending length: 3200 mm Distance between uprights: 2655 mm Main motor: 11 kW Nwodpfxewacqxe Ai Ejk Maximum ram stroke: 200 mm Machine model: KK Industries 125x3200, 4 axes (Y1-Y2-X-R) with CNC crowning Rated force: 125 t Bending length: 3200 mm Distance between columns: 2655 mm Throat depth: 400 mm Ram stroke: 200 mm Maximum opening height: 455 mm Ram down stroke speed: 180 mm/s Ram return speed: 160 mm/s Ram working speed: 13 mm/s Main motor power: 11 kW CNC system: ZY68 Number of controlled axes: 4+1 Oil tank capacity: 300 L Back gauge X-axis travel: 600 mm X-axis speed: 200 mm/s Positioning accuracy: ±0.10 mm Repeatability: ±0.015 mm Back gauge motor power: 0.85 kW Back gauge R R-axis travel: 150 mm R-axis speed: 100 mm/s Positioning accuracy: ±0.10 mm Repeatability: ±0.015 mm Dimensions: Length: 3450 mm Width: 1580 mm Height: 2550 mm Weight: 7100 kg Delem T53 control (surcharge €5,000)

Stanje: novo, Pressure: 160 Bending length: 3200 mm Frame gap: 2655 mm Installation height: 400 mm Nwedpfx Aijv S Npye Eek Motor: 11 kW Max. ram stroke: 200 mm Repeat accuracy: 0.015 mm Positioning accuracy: 0.10 mm CNC press brake KK Industries 160x3200, 4 axes Y1-Y2-Y-X-R with CNC crowning Standard equipment: - Robust construction for high stability and precision. - CNC axes: Y1, Y2, X and R axis for precise control and accurate bending operations. - CNC-controlled, motorized crowning system for exact adjustment. - CNC control ZY 68 by the manufacturer (similar to Delem), user-friendly interface and high flexibility. - Backgauge with linear guides and ball screw drive, equipped with 4 stopper fingers for precise material positioning. - 2 sheet support arms for ergonomic material handling. - Laser safety device on the upper beam to ensure operator safety during operation. - Quick-clamping system for the top tool enables rapid and simple tool changes. - Top tool system: Promecam Amada, split and goosenecked for maximum flexibility. - Multi-V die system: Both Promecam and Amada systems compatible. - CE safety equipment, complies with all relevant safety regulations. Optional: Delem T53 control (surcharge: €5,000)

Stanje: novo, Press force: 63 t Bending length: 2500 mm Nwsdpsv Trgqefx Ai Eek Distance between uprights: 1980 mm Motor: 11 kW Ram stroke (max.): 150 mm Opening width: 400 mm CNC Press Brake KK Industries 63x2500, 4 axes Y1-Y2-Y-X-R with CNC Crowning Technical Specifications: Pressing force: 63 t Bending length: 2500 mm Distance between columns: 1980 mm Throat depth: 300 mm Ram stroke: 150 mm Maximum opening: 400 mm Ram approach speed: 180 mm/s Ram return speed: 170 mm/s Ram working speed: 14 mm/s Main motor output: 11 kW CNC system: ZY68 Number of controlled axes: 4+1 Oil tank capacity: 150 L Back Gauge: X-axis: X-axis travel: 600 mm X-axis speed: 200 mm/s Positioning accuracy: ±0.10 mm Repeat positioning accuracy: ±0.015 mm Motor power: 0.85 kW R-axis: R-axis travel: 150 mm R-axis speed: 100 mm/s Positioning accuracy: ±0.10 mm Repeat positioning accuracy: ±0.015 mm Dimensions and Weight: Length: 2750 mm Width: 1350 mm Height: 2320 mm Weight: 4000 kg

Stanje: novo, Pressing force: 40 Bending length: 1600 mm Distance between uprights: 1980 mm Motor power: 4 kW Ram stroke, max.: 150 mm Maximum opening: 370 mm CNC press brake 40x1600, 4 axes Y1-Y2-X-R with CNC crowning Technical parameters: Nominal press force: 63 kN Bending length: 1600 mm Distance between columns: 1980 mm Throat depth: 250 mm Ram stroke: 150 mm Maximum opening height: 370 mm Ram descent speed: 180 mm/s Ram return speed: 150 mm/s Ram operating speed: 15 mm/s Main motor power: 4 kW CNC system: ZY68 Number of control axes: 4+1 Oil tank capacity: 90 L Back Gauge (X Axis): X-axis travel: 600 mm X-axis speed: 200 mm/s Positioning accuracy: ±0.10 mm Repetitive positioning accuracy: ±0.015 mm Motor power: 0.85 kW R-Axis: R-axis travel: 150 mm R-axis speed: 100 mm/s Positioning accuracy: ±0.10 mm Repetitive positioning accuracy: ±0.015 mm Nwedpfx Aowacq Eji Eok Dimensions and weight: Length: 1850 mm Width: 1250 mm Height: 2180 mm Weight: 2700 kg Additional motor power: 0.85 kW

Stanje: novo, Pressure: 200 Bending length: 3200 mm Frame width: 2700 mm Installation height: 400 mm Stroke length (max.): 200 mm Throat depth: 350 mm Dimensions (LxWxH): 3700 x 1700 x 2700 mm Weight approx.: 14,000 kg CNC Press Brake 3200 mm x 200 t Standard equipment: ----- Robust design Nsdpfxettxh No Ai Eowk CNC axes: Y1, Y2, X and R axis CNC crowning device, motorized, with CNC control CNC controller Original DELEM DA-58T, 15” touchscreen Backgauge with linear guide and ballscrew, with 4 stop fingers 2 sheet support arms Laser safety device on upper beam Quick clamping system for upper tool Upper tool system: Promecam Amada segmented gooseneck die Multi-V die system; both Promecam and Amada systems possible CE safety equipment

Stanje: novo, Pressure: 200 Bending length: 3200 mm Frame width: 2700 mm Installation height: 400 mm Stroke length (max.): 200 mm Throat depth: 350 mm Dimensions (LxWxH): 3700 x 1700 x 2700 mm Weight approx.: 14,000 kg Motor: 15 kW CNC Press Brake 3200 mm x 200 t Standard equipment: ----- Robust construction CNC axes Y1, Y2, X and R axis CNC crowning system, motorized and CNC controlled CNC controller Original DELEM DA 58 T touchscreen, 15-inch Nwedpstq Nm Njfx Ai Eok Backgauge with linear guide and ball screw with 4 stops 2 sheet support arms Laser safety device on the upper beam Quick clamping system for upper tool Tool system upper tool Promecam Amada, segmented and gooseneck Multi V-die system, both Promecam and Amada compatible Safety equipment Our machine features an Ecoline mode, which allows energy consumption optimization to save costs, and the machine operates very quietly.

Stanje: novo, Debelina pločevine: 1,8 mm Premer zgornjega valja: 70 mm Nwjdpfx Aisd Ab T Re Ejk Mere (D׊×V): 1650 x 700 x 1160 mm Upogibanje: 1,5 mm Motor: 1,1 kW Dolžina pločevine: 1050 mm Tehnični podatki: - Ohišje iz litega železa - Ročno ali motorizirano (opcijsko) upogibanje - Po upogibanju se zgornji valj odpre ob strani za lažje odstranjevanje materiala - Naprava za konično upogibanje - Premikanje zadnjega in spodnjega valja ročno z ročnim kolesom - Prenosna nadzorna plošča - V skladu s CE standardi Možnosti: - Zadnji valj z motornim pogonom - Digitalni prikaz položaja zadnjega valja - Zaščitni pokrov ohišja EURO 274,-- - Kaljeni valji EURO 392,-- - Spremenljiva hitrost vrtenja Imamo veliko referenc!

Stanje: novo, Bending length: 1550 mm Sheet thickness: 3.5 mm Upper roll diameter: 110 mm Technical Data: - Rear roll driven by motor - Cone bending device - Entire frame constructed from St 52 steel - Main motor with brake system - Upper and lower rolls driven by electric motor, gearbox, and gear system - Mobile control panel - Cast iron body - Manual movement of rear and lower rolls - Complies with CE standards Options: - Upper roll driven by electric motor EURO 1,166.00 - Digital position display for rear roll EURO 1,010.00 - Hardened rolls EURO 995.00 - Special voltage EURO 480.00 - Material feed table - Lower roll driven by electric motor We have numerous references! Nsdpfod Ab N Dex Ai Eowk

Stanje: novo, Bending length: 1050 mm Nwodpsd Ab N Hsfx Ai Eek Sheet thickness: 5 mm Top roller diameter: 110 mm Technical specifications: - Rear roller motor-driven - Conical bending device - Hardened and polished rollers - Entire body constructed from St 52 steel - Main drive motor with brake system - Top and bottom rollers driven by electric motor, gearbox, and transmission system - Portable control panel - Cast iron frame - Manual adjustment of rear and lower rollers - Compliant with CE standards Options: - Top roller driven by electric motor: EUR 1,166 - Digital display for rear roller position: EUR 1,010 - Hardened rollers: EUR 725 - Special voltage: EUR 480 - Material feed table - Bottom roller driven by electric motor We have numerous references!

Stanje: novo, Bending length: 1550 mm Sheet thickness: 1.2 mm Upper roll diameter: 70 mm Technical Data: - Cast iron body - Manual or motorized bending (optional) - After bending, the upper roll can be opened to the side for easy removal of the material - Cone bending device - Rear and lower rolls can be adjusted up and down manually with handwheel - Portable control panel - In compliance with CE standards Nsdpfxsd Ab T Ie Ai Eswk Options: - Motorized rear roll - Digital display for rear roll position - Body cover EURO 362,-- - Hardened rolls EURO 550,-- - Variable rotation speed We have numerous references!

Stanje: novo, Sheet thickness: 1.2 mm Bending length: 1550 mm Top roller diameter: 70 mm Technical Data: - Cast iron body - Manual or motorized (optional) bending - After bending, the top roller can be swung out to easily remove the material - Conical bending device - Movement of the rear and lower rollers up and down manually via handwheel - Portable control panel - In compliance with CE standards Nwjdped Ab T Nefx Ai Esk Options: - Rear roller with motor EURO 825,-- - Digital display for rear roller position EURO 1,010,-- - Body cover EURO 362,-- - Hardened rollers EURO 550,-- We have numerous references!

Stanje: novo, Bending length: 1050 mm Sheet thickness: 1 mm Upper roller diameter: 56 mm Technical data: - Cast iron body - Manual or motorized (optional) bending - After bending, the upper roller can be swung out to easily remove the material - Cone bending device - Manual adjustment of rear and lower rollers using handwheels - Portable control panel - In compliance with CE standards Options: - Motorized rear roller - Digital display to indicate the rear roller position - Body cover Nedpfx Aijd Ab Uxs Ejwk - Hardened rollers EURO 336, -- We have many references!

Stanje: novo, Dolžina upogibanja: 1050 Debelina pločevine: 1 Premer zgornjega valja: 56 Tehnični podatki: - Ohišje iz sive litine - Ročno ali motorizirano (opcijsko) upogibanje - Po upogibu se zgornji valj odpre na stran za enostavno odstranitev materiala - Naprava za stožčasto upogibanje - Premikanje zadnjega in spodnjega valja ročno z volanom navzgor in navzdol - Prenosna upravljalna konzola - V skladu s CE standardi Opcije: - Zadnji valj z motorjem Nwedpfx Aod Ab Uyei Esk - Digitalni prikaz položaja zadnjega valja - Pokrov ohišja - Kaljeni valji EURO 396, -- Imamo veliko referenc!

Stanje: novo, Bending length: 1050 mm Nsdjd Ab U Aspfx Ai Eowk Sheet thickness: 0.8 mm Top roll diameter: 46 mm Technical data: - Cast iron body - Manual or motorized (optional) bending operation - Top roll can be opened sideways after bending for easy removal of the material - Cone bending device - Rear and lower roll adjustment up and down manually via handwheel - Portable control panel - Complies with CE standards Options: - Motorized rear roll - Digital display to indicate rear roll position - Body cover - Hardened rolls EURO 336, -- We have many references!

Stanje: novo, Pressure: 100 Cylinder: horizontally adjustable Stroke: 350 mm Stand width: 1050 mm Working speed: 2 mm/s Rapid traverse: 28 mm/s Nwjdpjwwngtjfx Ai Ejk Length: 1900 mm Width: 850 mm Height: 2250 mm Weight approx.: 1030 kg Cylinder horizontally adjustable: 650 mm - Cylinder adjustable horizontally - 650 mm Height-adjustable work table – conveniently adjustable via chain Safe two-hand operation – convenient control via hand lever and push button Adjustable maximum pressure – individually adaptable for various applications Integrated manometer – enables precise pressure monitoring during operation CE-compliant design – manufactured according to current safety and quality standards Operating manual – detailed and easy to understand, available in German and English Two working speeds – for particularly precise and efficient work Image is a sample photo

Stanje: novo, Pressure: 20 tons Cylinder: stationary Stroke: 350 mm Frame width: 520 mm Working speed: 4 mm/sec Return speed: 30 mm/sec Length: 1200 mm Nwsdpswwnhksfx Ai Eek Width: 500 mm Height: 1800 mm Approximate weight: 210 kg Height-adjustable work table – manually adjustable for maximum operational flexibility Safe two-hand operation – convenient control via hand lever and push button Adjustable maximum pressure – can be customized for various applications Integrated pressure gauge – enables precise pressure monitoring during operation CE-compliant design – manufactured according to current safety and quality standards Operating manual – detailed and easy to understand, available in German and English Two working speeds – for especially precise and efficient work