Tečajni Vrtalnik nakup rabljenega (409)

Stanje: novo, Leto izdelave: 2026, The CORMAK WS32BGP pillar drill is a professional column drilling machine for metal, designed for intensive use in manufacturing plants, toolrooms, and maintenance workshops. Its precise engineering, high-power motor, as well as integrated auto-feed and cooling systems ensure efficient and safe operation for drilling and tapping holes in steel up to 32 mm in diameter. Key features of the machine: - Spindle auto-feed – enables precise tooling without operator fatigue, increasing work efficiency. - Tapping function with automatic reverse – allows for effective threading up to M20 in steel. - Large spindle travel – 150 mm – enables processing of deep holes without process interruption. - High construction rigidity – the body and column are made from seasoned castings, guaranteeing stability even under maximum load. - Eight spindle speeds – broad range (140–1960 rpm) allows optimal parameter selection for various materials. - Cooling system – extends tool life and improves machining quality. Construction and technology The CORMAK WS32BGP column drill for metal is built on a robust 100 mm diameter column and a heavy-duty base, ensuring rigidity and stability during operation. The headstock, column, and table are manufactured from high-grade cast iron. The spindle is mounted on precision bearings and features a Morse taper MK3. The gearbox shafts are made of hardened, heat-treated steel, ensuring the durability of the entire drive mechanism. Operator safety is enhanced by a U-type spindle guard with safety switch, and a belt drive cover with end stop. Precision and productivity With automatic feed function and a wide range of spindle speeds, the machine delivers exceptional drilling accuracy and repeatability. The high-quality control panel and built-in LED work lamp ensure intuitive operation and comfort, even in poorly-lit areas. The table can rotate 360° and manual height adjustment enhances operational flexibility. Applications The CORMAK WS32BGP column drill is designed for industrial metalworking. Applications include: - metalworking shops, - maintenance departments, - toolrooms, - small and medium manufacturing enterprises, - technical schools and training centers. Tjdpfx Alsridqbstea Standard equipment - Drill chuck with key (Morse taper MK3) - Cooling system - Drift key for Morse taper removal - Built-in LED lamp - CE-compliant safety guards Technical specifications Maximum drilling diameter in steel: 32 mm Maximum tapping diameter in steel: M20 Column diameter: 100 mm Column wall thickness: 12.7 mm Spindle travel: 150 mm Spindle-to-column distance: 265 mm Table vertical movement range: 820 mm Table rotation: 360° Max. spindle-to-base distance: 1235 mm Spindle mounting: MK3 Speed range: 140–1960 rpm Number of speeds: 8 Table size: 380 × 400 mm Base size: 380 × 400 mm Machine height: 1900 mm Motor power: 1.5 kW Feed motor power: 0.12 kW Power supply: 400 V Net weight: 310 kg Packing dimensions: 1040 × 640 × 2050 mm

Stanje: novo, Leto izdelave: 2026, Drill press ensures perfect drilling quality thanks to its rigid design. The tilting table allows for a wide range of machining operations. The machine is equipped with an electronic speed indicator, drilling depth indicator, and a movable head. A 125 mm vise is included. This model features stepless spindle speed adjustment. Tsdpfjridnvex Altja Machine description: - stepless spindle speed adjustment - LED lamp - work table and base equipped with T-slots - robust, torsion-resistant column - tilting work table adjustable from -45° to +45° - depth stop with scale Technical specifications: Maximum drilling diameter: 25 mm Maximum chuck diameter: 16 mm Distance spindle axis to column: 215 mm Spindle taper: MT3 Spindle travel: 150 mm Column diameter: 80 mm Motor: 400 V / 50 Hz / 1500 W Transmission: YES Base dimensions: 580 x 415 mm Table dimensions: 356 x 356 mm Total height: 1710 mm Spindle speed range (50 Hz): 180–2000 rpm Table travel range: 600 mm Packed dimensions (L/W/H): 1510 x 690 x 256 mm Weight: 95 kg

Stanje: novo, Leto izdelave: 2026, The CORMAK WS32GP column drilling machine is a high-performance pillar drill for metal, designed for use in industrial environments where high precision, reliability, and threading capability are required. Equipped with a coolant system, safety guards, and a 400 V drive, this machine is ideal for series production as well as toolrooms. Todpfx Aljridp Netea Key features: • Threading up to M20 – automatic left-hand rotation for efficient and safe tapping. • High torque – 1.5 kW (400 V) motor ensures effective machining of structural and tool steels. • 150 mm spindle stroke – enables deep-hole drilling without repositioning the workpiece. • Robust construction – made from seasoned cast iron, guaranteeing rigidity and durability for years of heavy use. • 8 spindle speeds (140–1960 rpm) – wide range for optimal cutting parameters for various materials. • Table with height adjustment and 360° rotation – flexibility for workpiece positioning and accessibility. • Integrated gravity coolant system – extends tool life and improves surface quality. • Operator safety – spindle and belt drive protected by limit switches, compliant with CE standards. Design & Technology – For continuous duty in demanding environments The CORMAK WS32GP column drill is built from high-quality components: spindle head, column, table, and base are all made of seasoned cast iron for vibration and deformation resistance. The MK3 spindle and drive train are manufactured from hardened and heat-treated steel for high durability and accuracy. The clear control panel and ergonomic lever ensure intuitive operation during extended use. The built-in LED work light enhances comfort in poorly lit conditions. Precision & Productivity – Optimized for metalworking With a 150 mm spindle stroke and highly rigid frame, the CORMAK WS32GP ensures high dimensional accuracy and repeatability. The smooth-running motor and precise gear system allow trouble-free drilling and tapping. The table offers a large vertical travel (820 mm), and the maximum spindle–base distance of 1235 mm accommodates both small and large workpieces. Standard equipment: • 1.5 kW three-phase motor • Forward/reverse with tapping function • Integrated gravity-feed coolant system • MK3 spindle with drill chuck • Spindle and drive belt guard with safety interlocks • Drift for removing MT shank • LED work lamp • User manual (Polish) • CE conformity declaration Technical data: Parameter Value Maximum drilling capacity in steel: 32 mm Maximum tapping capacity in steel: M20 Column diameter: 100 mm Column wall thickness: 12.7 mm Spindle travel: 150 mm Spindle–column distance: 265 mm Table lift range: 820 mm Table rotation: 360° Max. spindle–base distance: 1235 mm Spindle taper: MK3 Spindle speed range: 140–1960 rpm Number of speeds: 8 Table dimensions: 380 × 400 mm Base dimensions: 380 × 400 mm Machine height: 1900 mm Motor power: 1.5 kW Power supply: 400 V Net weight: 310 kg Package dimensions: 1040 × 640 × 2050 mm

Stanje: novo, Leto izdelave: 2026, The industrial column drill Z5050 is designed for both small workshops and facilities with high workload. One of the drill’s key advantages is its heavy, robust and stable construction, as well as a thick, rigid steel column. The reliable motor can handle even the most demanding tasks. The machine features a wide range of speeds, automatic spindle feed, and a threading function. Manufactured from high-quality materials and using modern technological solutions, this column drill ensures long service life, reliability, and durability. CORMAK Z5050 Column Drill – Machine Features Modern aesthetic design and compact construction Wide speed adjustment range Easy and intuitive operation Tsdpfx Asridynjltoa 180° swivel worktable Drill equipped with cooling system Powerful spindle motor designed in accordance with IEC standards CORMAK Z5050 Column Drill – Technical Specifications MAX. DRILLING DIAMETER: 50 mm THREADING (STEEL, CAST IRON): M22, M24 SPINDLE DIST. TO COLUMN SURFACE: 370 mm SPINDLE DIST. TO WORKTABLE: 80–800 mm MAX. SPINDLE DIST. TO BASE: 1325 mm SPINDLE TRAVEL: 210 mm WORKTABLE SWIVEL ANGLE: +/- 45° SPINDLE TAPER: MT 4 NUMBER OF SPEEDS: 18 SPINDLE SPEEDS: 55, 80, 95, 120, 145, 160, 180, 240, 270, 335, 400, 440, 500, 600, 750, 965, 1125, 1450 rpm NUMBER OF FEEDS: 4 stages SPINDLE FEEDS: 0.1; 0.2; 0.3; 0.4 mm/rev COLUMN DIAMETER: Ø 190 mm TABLE DIMENSIONS: 580 x 580 mm BASE DIMENSIONS: 860 x 580 mm T-SLOT WIDTH: 2–18 mm MOTOR: 2.2/3 kW 400 V, 960/1440 rpm COOLANT PUMP: 75 W OVERALL DIMENSIONS: 1050 x 590 x 2150 mm WEIGHT: 760 / 860 kg CORMAK Z5050 Column Drill – Standard Equipment Drill chuck 1–13 mm 3 Morse taper reduction sleeves Lighting system Cooling system

Stanje: novo, Leto izdelave: 2026, Highly efficient Cormak 32 column drilling machine is the ideal solution for professional workshops and small-batch production. Equipped with a 1500W two-speed motor with a direction switch for forward and reverse rotation. Features rack-and-pinion table height adjustment. The work table tilts left and right from 0 to 45 degrees. Additionally, the Cormak 32 drill is fitted with a gravity-fed cooling system. The set includes a 150 mm vice and a drill chuck. Technical Data Maximum drilling diameter: 32 mm Chuck capacity: 16 mm Distance from spindle to column: 254 mm Maximum spindle travel: 120 mm Spindle taper: MK4 Maximum distance from table to spindle: 595 mm Distance from quill to column: 260 mm Maximum distance from base to spindle chuck: 1075 mm Table dimensions: 475x425 mm Column diameter: 92 mm Motor power: 1.5 kW Voltage: 400 V Cooling system: gravity-fed Overall dimensions: 1670 x 760 x 475 mm Net weight: 144 kg Spindle speed range Motor speed Spindle speed (min-1) 1400 min-1 120 200 250 360 400 450 950 1280 1520 1840 2440 3480 700 min-1 60 100 120 180 200 220 470 640 760 920 1120 1740 Standard equipment - 1500W two-speed motor - Forward and reverse rotation - Polish language documentation (DTR) - CE Declaration - Gravity-fed cooling system Optional equipment - Automatic feed Toderidpwjpfx Altsa

Stanje: zelo dobro (rabljeno), Travel paths: 450 x 260 x 560 mm Quill stroke: 120 mm Cross table: 770 x 320 mm Drilling capacity: 25 mm Spindle speeds: 55 - 9,200 rpm Tjdetpgcnjpfx Altsa With digital readout With thread cutting device Various accessories MARCELS MACHINES CH

Stanje: zelo dobro (rabljeno), Drilling capacity: 20 mm Spindle mount: FEHLMANN Spindle speeds: 50–6,300 rpm Throat depth: 276 mm Cross table: 530 x 255 mm Todpfouy Sazsx Altja Digital readout Various accessories MARCELS MASCHINEN CH

Stanje: dober (rabljeno), Tip: SSB 3 A Št. stroja: 5607 Leto izdelave: 1973 Oprema: - Vrtalna pinola MK3 - Strojna svetilka - Hitrovpenjalna vrtalna glava, vključno s konusnim trnom, vpenjalni obseg 3-16 mm Tsdpfx Aoxlqxfsltoa - Brezstopenjske vrtalne hitrosti Območje 1: 0-900 obr/min Območje 2: 0-1700 obr/min - Naprava za rezanje navojev Stanje: dobro, preverjeno v delavnici, variator vrtljajev novo ležajen

Stanje: dober (rabljeno), 1 x Bench Drill Solid TB 16 in technically good condition. Technical data: Spindle taper: MK 2 Speeds: 200 - 3200 rpm Table clamping surface: 260 x 330 mm Accessories: Quick-action chuck 1 - 13 mm Tjdpjwyw Apsfx Altsa Drift key The machine can be inspected under power.

Stanje: novo, Leto izdelave: 2024, New machine Year of manufacture: 2024 Robust drilling machine with powerful OPTIMUM brushless drive. The machine's highlight is the menu-guided operation of the drilling/tapping working modes. - Smooth-running and powerful brushless drive - Optimal power transmission via aluminum belt pulleys combined with toothed GATES quality V-belt - High running smoothness thanks to ground multiple-spline driver - Concentricity accuracy guaranteed to be less than 0.015 mm (measured at the drill quill) - Drill spindle with precision ball bearings - Membrane keypad; dirt- and water-resistant, easy to clean - High-quality OPTIMUM keyless drill chuck included as standard - Separate emergency stop pushbutton - Precisely machined drill table with diagonal T-slots, 360° rotatable - Surrounding coolant channel around the drill table - Large, height-adjustable safety shield with safety switch for maximum operator protection - Drill depth stop - V-belt cover with safety switch - V-belt tensioning mechanism - Solid, large base plate, heavily ribbed on the rear side Technical data: - Column diameter: 60 mm - Dimensions (LxWxH): approx. 552 x 445 x 850 mm - Weight: approx. 64 kg - Drilling capacity, steel: 18 mm - Continuous drilling capacity, steel: 16 mm - Tapping capacity, steel: M10 - Drill table: 230 x 245 mm - Speed range: 100 – 6000 rpm - Number of speed ranges: 5 - Total connected load: 1.5 kW - Supply voltage: 230 V - Quill travel: 65 mm - Spindle taper: MT 2 - Throat: 130 mm - Supplied with keyless drill chuck 1–13 mm Tjdow Rhk Repfx Altja - Supplied with machine vice BMP 100 Availability: short-term Storage location: Flörsheim

Stanje: dober (rabljeno), Machine images 1 to 9 Gillardon Price €9,500 Technical data: - Drilling capacity in solid steel ST 60: 32 mm - Drilling capacity in cast iron GG 25: 40 mm - Thread cutting in ST 60: M 27 - Drill spindle taper: MK 4 - Quill stroke: 150 mm - 12 spindle speeds: 102 - 2000 rpm - 3 feed rates: 0.1 - 0.3 mm/rev - Min./max. distance spindle – table: 310 / 610 mm - Drilling radius min / max: 400 / 1200 mm - Table height: 720 mm - Table size: 1200 x 500 mm - Drive: 400 V / 1.6 / 2.9 kW - Required space approx. W 1200 x H 2800 x D 2300 mm - Weight approx. 1,500 kg - Including: thread cutting device, hydraulic column and arm clamping, coolant system, T-slots vertically on the rear of the machine Machine 2 images 10 to 15 Tjdpfx Aeu Nm Nisltoa HKS 34 MT Price €16,500 Drilling capacity: 45 mm Table size: 1200 x 560 mm Drill spindle taper: MK 4 Quill stroke: 170 mm Speed / steps: 70-2000 rpm Feed / steps: 0.1, 0.2, 0.3 mm/rev Motor: 2.9 kW

Stanje: novo, Leto izdelave: 2026, številka stroja/vozila: PRJ069841, ALZMETALL bench drilling machine, drilling capacity in steel 14mm. Short spindle MK2, spindle stroke: 80mm, throat depth: 190mm, column diameter: 65mm, machine table usable area: 300x240mm, with T-slots 2 x 12mm x 80mm, spindle-to-table distance min./max.: 75/357mm, machine table height adjustment via handwheel, machine base plate, usable area: 300x240mm, with T-slots 2 x 12mm x 80mm, spindle-to-base plate distance min./max.: 437/437mm, manual feed, machine height without options: 825mm, net weight: 83 kg. - Continuously variable speed 230-4000 rpm Standard equipment: Tjdpslub Htefx Altja 5" TFT LCD display with touch function: Manual input for target spindle speed, actual speed display, integrated drilling depth indicator with touch zero point transfer, virtual drilling depth scale on display, machine status displays and warning notices on display, service information, selectable operating language DE/EN/FR/ES/IT/NL/RU. AC motor 230 Volt, 50 Hz, connection plug pre-installed, 2m cable length, three separate push buttons for clockwise – counterclockwise – stop, spindle holding via brake function, spindle guard with electrical interlock, lockable main switch, mushroom push-button (latching) for EMERGENCY STOP, stepless speed adjustment via potentiometer, protection class IP54, spindle guard with electrical interlock, finish: DD textured varnish signal white RAL 9003, PANTONE 7545c, black. Delivery time: from stock Waiblingen Beinstein.

Stanje: zelo dobro (rabljeno), For sale: HANG 106DTK paper drill, fully functional and in good condition. Several Hang drills available in stock. Tjdpfx Aljudpc Sjtja

Stanje: zelo dobro (rabljeno), Profesionalni knjižarski vrtalnik priznane nemške družbe Constantin Hang Maschinenfabrik Göppingen. Model 114-4 je opremljen s 4 vrtalnimi glavami, namenjenimi za natančno vrtanje papirja, dokumentacije, katalogov, koledarjev in drugih tiskarskih materialov. Stroj se uporablja v: • tiskarnah, • knjigoveznicah, • grafičnih delavnicah, • proizvodnji registratorjev in katalogov, • pripravi tehnične dokumentacije. Trdna nemška konstrukcija zagotavlja visoko natančnost delovanja in dolgo življenjsko dobo. Tehnični podatki: • Proizvajalec: Constantin Hang Maschinenfabrik • Model: 114-4 • Število glav: 4 • Nastavljiv razmak glav • Nastavljiva delovna miza • Noga za upravljanje – pedal • Zaščitni pokrov Tedey Nm A Repfx Altoa • Proizvedeno v Nemčiji

Stanje: zelo dobro (rabljeno), Four-head paper drilling machine. Several units available!!! Brand: Hang Model: 106DTK4 Details: 4-head paper drilling machine with adjustable drilling heads Operation: Electric foot switch, 2 speeds Available immediately The following additional information is standard for this model. Details should always be thoroughly inspected during a site visit. The Hang 100DTK4 printing machine from 1975 is an iconic and reliable piece of equipment that has made a significant impact on the printing industry. Manufactured by Hang, this machine offered advanced features for its time and set the standard for high-quality and efficient printing. The Hang 100DTK4 features a robust and durable construction, ensuring stability and consistent performance during the printing process. While its printing technology is conventional by today’s standards, it allowed for precise and sharp prints with satisfactory resolution for its era. Equipped with user-friendly controls and mechanical automation, the machine offered programmable settings for various print formats and configurations. Operation required skilled operators who were able to achieve accurate and repeatable print results. The machine’s capabilities extended to various substrates, including paper, cardboard, and lightweight boards, accommodating a range of common printing applications of its time. Tjdjudl Ikjpfx Altja Launched in 1975, the Hang 100DTK4 represented a technological advancement of its era. Its lasting performance and contribution to the printing industry are noteworthy. While more modern printing machines with advanced digital technology have since emerged, the Hang 100DTK4 remains a historic symbol of efficiency and innovation in the 1970s printing sector. This machine is collectible and stands as a testament to the evolution of printing technology over the decades.

Stanje: potreben popravila (rabljeno), Funkcionalnost: nefunkcionalno, The images show: - 2-spindle drilling head - Pneumatic clamping device - Hydraulic feed unit Technical specifications: - Continuous drilling capacity: 50 mm - Standard drilling capacity: 65 mm - Spindle motor, pole-switchable: 3 / 5 kW - 4 infinitely variable speed ranges - Gear stage 1: 50 – 375 and 100 – 750 rpm - Gear stage 2: 100 – 750 and 200 – 1500 rpm Todpfx Aljzd Uryjtsa - Distance spindle nose to table approx.: 800 mm - Spindle stroke: 200 mm - Column diameter: 160 mm - Throat: 325 mm - Table size: 650 x 500 mm - Height approx.: 2.1 m - Net weight approx.: 0.7 t Equipment / Delivery scope: - Table clamping from front - Coolant system - Electrical cabinet - Without table height adjustment - Hydraulic feed unit – hydraulic power pack is missing! (Drilling feed can be operated manually using a cross lever)

Stanje: dober (rabljeno), Indexable insert drill, high-performance drill with indexable inserts, solid drill, end mill, shank cutter, milling cutter, indexable insert milling cutter, shank cutter with internal cooling, indexable insert shank cutter - End mills: indexable insert shank cutters with internal cooling, 8 pieces - Mounting/holder: Ø 32 mm - Diameter: 32 to 43 mm, see photos / item list - Sale/price: as complete set - Transport dimensions: 400/200/H60 mm - Weight: 8.7 kg Tsdpfsrk S Dqox Altoa

Stanje: dober (rabljeno), Enlarging drill, twist drill, drill bit Todpfx Aeu Tlhieltea -Manufacturer: Werkö, twist drill bit Ø 66.0 mm -Shank: Morse taper MK5 -Type: Two-flute, 66.0 x 630 HSS -On request: Various sizes/quantities available from additional stock -Transport dimensions: Ø 66 x 780 mm -Weight: 10.6 kg

Stanje: dober (rabljeno), Leto izdelave: 1993, Vrtalni stroj, samostoječi vrtalni stroj, stebrni vrtalni stroj - Proizvajalec: Flott, stebrni vrtalni stroj tip SB 32 ST-FB, primeren za pretočno vrtanje - Vpenjalno vreteno: MK3 - Motor: 3,0 kW - Nastavitev hitrosti: brezstopenjsko z digitalnim prikazom - Hitrosti: 80 - 4000 obr/min - Velikost mize: 500 x 360 mm - Hod mize: 450 mm - Hod vretena: 160 mm z digitalnim prikazom - Razdalja od vretena do stebra: 300 mm - Premer stebra: 125 mm Todpeyvhclefx Altja - Dimenzije: 940/590/H1920 mm - Teža: 367 kg

Stanje: dober (rabljeno), Vrtalni stroj, namizni vrtalni stroj, stebrni vrtalni stroj - Proizvajalec: Flott, stebrni vrtalni stroj tip 23 mm - Vpenjalni konus: MK3 - Motor: 1,1 kW - Nastavitev števila obratov: preko klinastega jermena - Obrati: 200 - 2000 min⁻¹ - Velikost mize: 300 x 300 mm - Pomik: 440 mm - Hodi vretena: 145 mm - Iztegnitev: 300 mm - Premer stebra: 125 mm Tsdsyaptxspfx Altsa - Dimenzije: 900/450/V1900 mm - Teža: 306 kg

Stanje: dober (rabljeno), Namizni vrtalni stroj, stoječi vrtalni stroj, stebrni vrtalni stroj - Proizvajalec: WMW Heckert, namizni vrtalni stroj tip BT 2 - Vpenjalna miza: 340 x 280 mm - HOD zamika: 350 mm Tjdpfx Aljxm Rzietoa - Vreteno: MK2 - Previs: 215 mm - Hitrosti: 355/710/1400/2800 obr/min - Steber: premer 93 mm - Hod vretena: 100 mm / globinski omejevalnik z fino nastavitvijo - Motor: VEM 0,8/1,0 kW z zavoro - Napetost: 380 V - Količina: 2 kosa na voljo - Cena: na kos - Dimenzije: 550/480/H1270 mm - Teža: 157 kg/kos

Stanje: rabljeno, Boring head, spindle head, drilling head, parting-off boring head, parting-off head, spindle drilling head, counterboring head, spindle tool, trepanning drill, cutting head - Trepanning drill: Drilling head, cutting head with coolant system - Drilling diameter: 62 mm - Mount: MK4 - Dimensions: 740/76/107 mm Tjdpfsk Hdtxsx Altsa - Weight: 5.4 kg

Stanje: dober (rabljeno), Leto izdelave: 1962, Rapid radial drilling machine, radial drilling machine, drilling machine, cantilever drilling machine, rapid-action radial drilling machine -Clamping table: 400 x 1100 mm -Arm reach: 930 mm -Taper: MT4 -Motor power: 1.35/1.8 kW -Spindle speeds: 41–1700 rpm -Column diameter: Ø 200 mm -Spindle stroke: 125 mm -Tapping device: YES Todpeirax Usfx Altja -Feed: 0.075 – 0.3 mm/rev -Dimensions: 1800/1235/H2240 mm -Weight: 1500 kg

Stanje: dober (rabljeno), Namizni vrtalni stroj, stoječi vrtalni stroj, stebrni vrtalni stroj - Proizvajalec: WMW Heckert, namizni vrtalni stroj tip BT 12/1 s podnožjem - Vpenjalna miza: 340 x 280 mm - Hodec: 370 mm - Priklop vretena: MK2 - Iztezanje: 215 mm - Število vrtljajev: 224/450/900/1800 obr/min - Steber: premer 92 mm - Hod vretena: 100 mm / globinski omejevalnik z fino nastavitvijo Tedpfoir E Snjx Altoa - Motor: VEB 0,4/0,7 kW z zavoro - Napetost: 380 V - Dimenzije: 620/480/V1710 mm - Skupna teža: pribl. 182 kg

Stanje: rabljeno, pneumatic corner drill, compressed air drill, pneumatic angle drill, corner drill -Manufacturer: Chicago Pneumatic, pneumatic angle drill -Type: CP-0323TANAR Tsdpfx Alelw Az Aotsa -Operating pressure: 6.2 bar max. -Speed: 175 rpm -Dimensions: 790/260/H110 mm -Weight: 11 kg