Used Tos Bench Drill for sale (7,539)

Condition: used, Technical details: bore capacity in steel (diameter): 2-20 mm throat: 210 mm bore stroke: 100 mm Distance spindle/table max.: 450 mm Bodpfx Aozgaiijf Ajdh range of revolution per miute: I : 450-1800 + II: 900-3550 / 4step U/min spindle taper MT: 2 table surface area: 340x280 mm total power requirement: 1,1 kW machine weight ab.: 165 kg transport dimensions LxWxH: 0,6 x 0,5 x 1,28 m Robust industrial drilling machine manufactured in the former East Germany by the "Fritz Heckert" Machine Tool Combine. Equipped with a 1.1 kW motor, 380 V three-phase power supply, and a machine weight of approximately 165 kg. Precision machine suitable for drilling, countersinking, and light reaming operations. Solid cast-iron construction, ideal for toolmaking, workshops, maintenance departments, and training facilities. *

Condition: new, bore capacity in steel (diameter) 15 / 18 mm throat 180 mm bore stroke 80 mm turning speeds 200 - 4000 U/min 250 x 220 mm Bdedpfx Aefg U Thjf Ash distance drilling head - clamping area max. 380 mm total power requirement 1,1 / 400 kW / Volt column diameter 65 mm tool taper MK 2 weight of the machine ca. 0,08 t dimensions 0,4 x 0,5 x 0,9 m Precise table drill: - high accuracy and quality - Drill table adjustable via rack and swiveling around the column - Full engine protection - Star grip - 230 volt mains connection

Condition: good (used), Storage location: 3092 Manufacturer: WEBO (presumably) Type/Model: B3 Drilling capacity: 6 mm Spindle mount: Drill chuck Bodpfx Aszx Rxref Asdh Speed range: 1,600 to 9,000 rpm Overhang: 100 mm Table: 230 x 180 mm Stroke: 50 mm Total power consumption: kW Motor: FDM120/40.3401/2, 2,880 rpm Accessories/Equipment: Condition: good Footprint: 230 x 270 mm Weight: Dimensions: 230 x 440 x 400 mm

Condition: used, bore capacity in steel (diameter) 15 mm throat 215 mm turning speeds 200 - 3600 U/min 350 x 300 mm total power requirement 1,0 kW / Volt tool taper MK 2 weight of the machine ca. 320 Kg Bdodpozpzb Sjfx Af Aoh dimensions 0,8 x 0,6 x 1,9 mm Bench drill - Base unit with drawers

Condition: used, Year of construction: 2014, throat 180 mm quill stroke 80 mm continious capacity 20 spindle taper MK 2 Bsdpfx Afsxbtrgo Aodh table-size 280 x 245 mm height of the machine ca. 1000 m column diameter 73 mm distance spindle /table max. 425 mm dimensions ca. 615 x 330 x 1015 mm weight ca. 60 kg incl. vice HM Müller HT100P

Condition: good (used), Year of construction: 1992, machine/vehicle number: 530640, Offer 26203 Technical data: - Drilling capacity - in steel: 16 mm - Drilling capacity - in aluminum: 20 mm - Drill spindle connection: MK 2 - Drilling depth: 100 mm - Spindle/column overhang: 215 mm Bsdjz Dgbdjpfx Af Aedh - 6 drill spindle speeds, stage 1: 200 - 1600 rpm - 6 drill spindle speeds, stage 2: 400 - 3200 rpm - Drive: 400 V / 0.7 kW - Drilling table with T-slot: B 250 x D 320 mm - Max. distance drill chuck / table: approx. 220 mm - Space required: approx. W 300 x H 1050 x D 450 mm - Weight: approx. 100 kg - Quick-change drill chuck: 1 - 13 mm - Coolant system - Original machine base cabinet

Condition: used, Year of construction: 1957, Technical details: bore capacity in steel (diameter): 20 mm throat: 220 mm bore stroke: 85 mm Distance spindle/table max.: max. 260 mm range of revolution per miute: Keilriemen U/min spindle taper MT: 2 table surface area: 220 x 280 mm base plate surface area: 225 x 280 mm distance spindle center to floor plate:: max. 380 mm total power requirement: 0,33 kW Bodpju Id D Ujfx Af Aedh machine weight ab.: 125 kg dimensions L x W x H: 0,8 x 0,4 x 0,8 m The machine is currently in the technical department. Table rotatable 380 V with connection cable 2500mm *

Condition: new, Year of construction: 2026, CORMAK W25 Bench Drill Press for Metal with Tapping Function – Advanced Professional Drilling Machine Bdedpfx Ajrif I Ref Aoh The CORMAK W25 metal bench drill press is an advanced column drilling machine designed for professional workshop and industrial applications. Thanks to its integrated tapping function, large quill stroke and robust construction, the machine provides high precision and reliability in both drilling and tapping operations. It is ideal for single-piece and serial production, as well as for maintenance departments and technical service facilities. Main advantages of the machine Tapping function with automatic spindle rotation reversal – enables safe and fast thread cutting without changing tools or requiring additional operator intervention. Manual rotation direction control with a foot lever – allows precise retraction of the tap during manual operation. Large quill stroke of 125 mm – enables deep drilling and safe tapping without repositioning the workpiece. Adjustable worktable – tilts within ±45° and rotates 360° around the column, allowing convenient angled drilling and machining of irregular components. Belt drive system – ensures quiet, stable operation and easy maintenance. Belt transmission guard with limit switch – complies with workplace safety standards by protecting the operator from moving drive components. Construction and technology The CORMAK W25 model features a massive cast iron construction that provides high rigidity and reduces vibrations during machining. The MK3 spindle taper allows the use of a wide range of tools. A stable 100 mm diameter column and a heavy-duty base with T-slots enable secure clamping of workpieces. All structural components have been designed for long-term and intensive operation in demanding workshop environments. Precision and work efficiency The CORMAK W25 metal bench drill press offers five spindle speed ranges: 290, 420, 740, 1260 and 2150 rpm, allowing optimal adjustment of machining parameters to the material type and hole diameter. The tapping function with automatic spindle rotation reversal reduces cycle time and improves operational safety. The large working range (up to 630 mm between the spindle and base) allows machining of larger components. Applications The W25 column drill press is designed for intensive use in: industrial and metalworking workshops, production plants and tool rooms, maintenance departments, service centres, technical and vocational schools. It performs excellently both in standard drilling operations and in tapping processes in steel, aluminium and non-ferrous materials. Standard equipment Self-locking drill chuck MK3 drill chuck arbor Foot lever for changing spindle rotation direction Belt transmission guard with safety limit switch Technical specifications Parameter Value Maximum drilling diameter 25 mm Spindle quill stroke 125 mm Quill diameter 50 mm Spindle taper MK3 Spindle speed range 290 / 420 / 740 / 1260 / 2150 rpm Spindle axis-to-column distance 240 mm Column diameter 100 mm Table dimensions 280 × 300 mm Horizontal table rotation ±45° Table rotation around column 360° Maximum spindle-to-table distance 367 mm Maximum spindle-to-base distance 630 mm Motor power 1100 W / 400 V Dimensions (L × W × H) 800 × 400 × 1100 mm Weight 165 kg

Condition: new, Year of construction: 2026, CORMAK WS20B Bench Drill Press – Precision Metal Drilling Machine with Automatic Spindle Feed The CORMAK WS20B bench drill press is an advanced column drilling machine for metalworking, equipped with automatic spindle feed, enabling precise drilling and tapping in structural steel and other metals. Thanks to its robust construction, high power and accurate feed control, the WS20B provides high efficiency and reliability in both industrial and workshop applications. Main advantages of the machine Automatic spindle feed – precise feed adjustment up to 80 mm/min allows smooth and controlled drilling operations. Thread tapping function with automatic rotation direction switching – ensures safe and effective operation with taps up to M16. High rigidity construction – an 85 mm diameter column and seasoned castings reduce vibrations and improve drilling accuracy. 135 mm spindle stroke – allows deep drilling without the need to reposition the workpiece. Belt drive system – 5 speed levels ranging from 280–1875 rpm allow optimal adjustment of parameters to the processed material. CE safety systems – spindle and belt transmission guards with limit switches increase operator safety. Construction and technology Bedpfxerif T Do Af Aodh The CORMAK WS20B bench drill press with automatic feed has been designed for long-term and reliable operation. The spindle and transmission components are made of hardened and thermally treated steel. The column, base and worktable are manufactured from precisely machined, seasoned cast iron components. The MK2 Morse taper enables quick tool replacement and compatibility with a wide range of accessories. Precision and work efficiency The combination of automatic spindle feed and a powerful 1.1 kW motor enables smooth and repeatable drilling, even in difficult-to-machine materials. The rigid construction and the ability to rotate the worktable 360° improve operator comfort and provide greater flexibility when positioning workpieces. Applications The CORMAK WS20B drill press with automatic feed is used in: industrial plants, mechanical workshops, maintenance departments, technical schools and training centres. It is designed for drilling, reaming and tapping operations in metals, aluminium and engineering plastics. Standard equipment Drill chuck with key Morse taper drift key U-type spindle guard with safety limit switch Belt drive guard with safety limit switch Technical specifications Parameter Value Maximum drilling diameter (steel) 20 mm Maximum tapping diameter (steel) M16 Spindle stroke 135 mm Spindle taper MK2 Spindle speed range 280–1875 rpm Number of speeds 5 Feed speed range 0–80 mm/min Column diameter 85 mm Column wall thickness 12.7 mm Spindle-to-column distance 260 mm Spindle-to-table distance 366 mm Spindle-to-base distance 678 mm Table dimensions 300 × 320 mm Base dimensions 376 × 566 mm Motor power 1.1 kW Power supply 400 V Net weight 179 kg Machine dimensions 800 × 450 × 1250 mm

Condition: new, bore capacity in steel (diameter) 14 /15 mm throat 180 mm bore stroke 70 mm turning speeds 420 - 2100 U/min 250 x 220 mm distance drilling head - clamping area max. 380 mm total power requirement 0,5/1,0 / 400 kW / Volt column diameter 65 mm tool taper MK 2 Bodpfx Aefg U Tgof Aodh weight of the machine ca. 0,08 t dimensions 0,4 x 0,5 x 0,9 m Table Drilling Machine with: variable feed Tapping function. depth display Coolant system Belt-drive spindle protection machine light

Condition: excellent (used), *5-HEAD DRILLING MACHINE CINCINNATI MILACRON PM15* Ref: MILACRON-PM15-5T-0182 - Brand: CINCINNATI MILACRON (Chambost) - Type: PM 15 - 5 heads on a common base - Year: January 1982 - No. 74612 - Power Supply: 380V Three-phase - Capacity: Drilling 15mm / Tapping M10 approx. per head Bsdpoz Ax E Iefx Af Aedh - Table: Long grooved table ∼2.5m with stops - Equipment: 5 independent PM15 column drills, manual / automatic feed - Length of grooved table: 2100 mm x 400 mm - Condition: Complete set, functional, original blue paint - Weight: ∼800 kg for the complete machine Ideal machine for a small-batch workshop, multiple drilling, and finishing before assembly.

Condition: new, Year of construction: 2026, The CORMAK WS32BC bench drill press is a precision column drill for metal, equipped with automatic spindle feed and a cooling system, designed for demanding drilling and tapping operations. With its 8-speed gearbox, rigid construction, and extensive equipment, it is perfectly suited for intensive industrial use. Key Advantages Automatic spindle feed with adjustable speed up to 110 mm/min – improves ease of operation and ensures repeatable machining results Bodpfx Aorigaqef Aedh Integrated cooling system – protects tools from overheating and enhances machining quality Tapping function – automatic spindle reverse enables efficient thread cutting up to M24 High structural rigidity – 100 mm diameter column and heavy-duty base effectively reduce vibration 150 mm spindle stroke – allows deep drilling without interrupting the cycle 8-speed gearbox – range of 140–1960 rpm for precise parameter adjustment Enhanced safety – spindle and belt guards with limit switches, CE compliant Design and Technology The CORMAK WS32BC bench drill press is built from seasoned, precision-machined cast iron components. The spindle and transmission shafts are made of hardened steel to ensure durability and wear resistance. The MK3 Morse taper allows quick tool changes and compatibility with a wide range of drills and taps. The stable worktable, rotatable 360°, facilitates machining of workpieces with various shapes and dimensions. Precision and Performance Thanks to the automatic feed system and integrated cooling, the WS32BC ensures high hole quality and significantly reduces machining cycle times. The 1.1 kW main motor and 0.12 kW feed motor provide efficient operation even under heavy loads. The machine is ideal for drilling, reaming, and tapping in steel, cast iron, and alloy materials. Applications The CORMAK WS32BC automatic feed drill press is an excellent solution for: tool rooms and metal fabrication workshops maintenance departments manufacturing plants technical schools and training centers Standard Equipment Keyed drill chuck Drift key for taper removal Cooling system U-type spindle guard with limit switch Belt drive cover with safety switch Technical Specifications Parameter Value Max. drilling diameter (steel) 32 mm Max. tapping diameter (steel) M24 Column diameter 100 mm Column wall thickness 12.7 mm Spindle stroke 150 mm Feed speed 0–110 mm/min Spindle–column distance 265 mm Spindle–table distance 390 mm Spindle–base distance 745 mm Spindle taper MK3 Speed range 140, 250, 380, 500, 580, 850, 1250, 1960 rpm Number of speeds 8 Table dimensions 380 × 400 mm Base dimensions 645 × 470 mm Machine height 1370 mm Main motor power 1.1 kW Feed motor power 0.12 kW Power supply 400 V Net weight 230 kg Machine dimensions 900 × 500 × 1400 mm

Condition: new, bore capacity in steel (diameter) 15 / 18 mm throat 180 mm bore stroke 80 mm turning speeds 200 - 4000 U/min 250 x 220 mm distance drilling head - clamping area max. 380 mm total power requirement 1,1 / 400 kW / Volt column diameter 65 mm tool taper MK 2 weight of the machine ca. 0,08 t dimensions 0,4 x 0,5 x 0,9 m precise bench drill: - Large speed range - Programmable thread cutting - high accuracy and quality Bdsdpfx Afsfg U Tis Aoh - Drill table adjustable via rack and swiveling around the column - Full engine protection - Star grip - 230 volt mains connection

Condition: used, The robust Optimum B 23 Pro bench drill for drilling into wood, metal or other materials, featuring a quick-action chuck. Bsdpfozrytlsx Af Aodh Technical data: - Spindle mount: MK 2 - Rated power: 750 W // 400 V // 50 Hz

Condition: used, Year of construction: 1975, Technical details: bore capacity in steel (diameter): 32 mm throat: 230 mm bore stroke: 160 mm Bjdpfx Aevc Aytof Asdh spindle taper MT: 3 feed - manual: Handhebel mm revolution per minute: 100...2000 U/min headstock adjustment: 180° Grad headstock traverse: in Höhe/height/altura 350 mm clamping surface area: 1020x615 mm height over floor: 860 mm column diameter: 102 mm total power requirement: ca. 1,2 kW weight of the machine ca.: 0,5 t space requirements approx. LxWxH: L:1,2xB:0,77xH:2,26 m equipped: - toothed drill chuck up to 16mm Machine on sale as is, without test run. i.D. *

Condition: good (used), Stock number: 3030 Manufacturer: Wörner Machine number: 26207 Bedjxfa Upopfx Af Aedh Type / Model: B8 Drilling capacity: up to 10 mm Spindle mounting: Drill chuck Speed range: 780 to 10,000 rpm Stroke: 70 mm Throat depth: mm Table clamping surface: 240 x 220 mm Head adjustment: Machine footprint: 320 x 430 mm mm Total connection: kW Accessories/Equipment: Drill chuck Condition: very good Weight: 120 kg Dimensions with table: 600 x 800 x 1,200 mm Table working area: 560 x 720 mm

Condition: used, From business closure: Genko ATB 20 Speed range 30-2800 rpm Right & left rotation MK2 taper Quill stroke 65 mm Max. throat 530 mm Max. distance between spindle and table 610 mm 380 volt Albrecht quick-action chuck 0-10 mm Tilting drill head Table clamping surface 400x660 mm Weight approx. 200 kg Bedpfx Aoyhy Rzjf Asdh

Condition: used, bore capacity in steel (diameter) / mm throat / mm bore stroke 70 mm total power requirement 0,9 kW Bodpfx Afey Tbv Ts Ajdh

Condition: new, Year of construction: 2026, CORMAK W16 Bench Drill Press for Metal with Tapping Function – Precise and Reliable Drilling Machine The CORMAK W16 metal bench drill press is a precise and reliable column drilling machine equipped with a tapping function. Designed for professional applications, it is suitable for locksmith workshops as well as industrial production lines. The integrated spindle rotation direction change system makes it an ideal solution for both drilling and internal thread cutting operations. Main advantages of the machine Tapping function with automatic spindle rotation reversal – provides full control over the process without the need for manual gear changes. Manual rotation direction change using a foot lever – allows precise tool retraction during special operations. High spindle rigidity – ensures accurate holes even during long operating cycles. Adjustable drilling/tapping depth setting – protects against exceeding the specified technological parameters. Tilting and rotating worktable – adjustment of ±45° horizontally and full 360° rotation around the column. Belt drive system – ensures quiet operation and reduced vibration. Built-in overload protection – safety limit switch installed in the belt transmission guard. Construction and technology The CORMAK W16 column drill press is based on a highly rigid cast iron construction, ensuring stable operation even with maximum quill extension. The spindle with an MK2 taper provides compatibility with a wide range of tools. The belt drive system offers five speed ranges (480–4100 rpm), allowing precise adjustment of operating parameters to the properties of the processed material. Precision and work efficiency Thanks to the 100 mm spindle quill stroke and adjustable drilling depth, the operator has full control over every stage of machining. The integrated tapping function makes the W16 a versatile machine for both drilling and thread cutting while maintaining high repeatability. The spindle speeds have been selected to provide optimal efficiency for drilling holes and producing metric threads in materials with different hardness levels. Applications The CORMAK W16 metal bench drill press is an ideal solution for: mechanical workshops and tool rooms, maintenance departments, assembly and production lines, technical schools and training centres. The machine is suitable wherever a precise drill press with tapping capability is required for machining steel, aluminium and engineering plastics. Standard equipment Self-locking B18 drill chuck MK2 drill chuck arbor Foot lever for changing rotation direction Belt transmission guard with limit switch Bsdpfx Ajrif Iujf Asdh Technical specifications Parameter Value Maximum drilling diameter 16 mm Spindle quill stroke 100 mm Spindle taper MK2 Spindle speed range 480 / 800 / 1400 / 2440 / 4100 rpm Spindle axis-to-column distance 193 mm Table dimensions 200 × 230 mm T-slots (table/base) 18 mm / 14 mm Base dimensions 528 × 360 mm Maximum spindle-to-table distance 315 mm Maximum spindle-to-base distance 556 mm Horizontal table rotation range ±45° Table rotation around column 360° Motor power 750 W / 400 V Weight 90 kg

Condition: good (used), Year of construction: 2003, bench drill, pillar drill, column drill -Manufacturer: Ixion, bench drill type BT13ST -Clamping table: 170 x 170 mm -Travel distance: 210 mm -Spindle mount: Drill chuck B16 (1-13 mm) -Protrusion: 180 mm -Speeds: 420 - 2100 rpm continuously variable Bsdpfx Ajk Tuwvef Aedh -Column: Diameter 65 mm -Spindle stroke: 70 mm, with fine stop -Motor: AEG 0.7/1.0 kW -Voltage: 380 V -Dimensions: 620/235/H800 mm -Weight: 70 kg

Condition: used, Technical details: Bjdou N E Evepfx Af Asdh material thickness: 1,0 mm material width: 17,0 mm internal diameter: 30,0 mm external diameter: 78,0 mm Spare part for bench drill BT 2 Patt spring - Return spring - Spiral spring Declaration of conformity according to ISO/IEC 17050-1 Acceptance test certificate 3.1 according to DIN EN 10204 available *

Condition: new, Year of construction: 2024, New machine Year of manufacture: 2024 Robust drilling machine featuring a powerful OPTIMUM brushless drive. Key highlight: menu-guided control for operating modes drilling/tapping. - Smooth-running and high-performance brushless drive - Optimal power transmission via aluminium pulleys combined with a toothed GATES quality V-belt Bsdpfx Afow Rhk Rs Aedh - High running smoothness thanks to precision-ground multi-spline drive - Concentricity guaranteed at less than 0.015 mm, measured at the quill - Drilling spindle with precision ball bearings - Membrane keypad; dust- and water-resistant, easy to clean - High-quality OPTIMUM quick-action drill chuck included as standard - Separate emergency stop pushbutton - Precisely machined worktable with diagonal T-slots, 360° rotatable - Integrated coolant channel surrounding the worktable - Large, height-adjustable safety guard with interlock switch for maximum operator protection - Drilling depth stop - V-belt guard with safety switch - V-belt tensioning mechanism - Solid, large base plate with reinforced ribs at the rear Technical specifications: 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 Table size: 230 x 245 mm Speed range: 100 – 6000 rpm Number of speed ranges: 5 Total power connection: 1.5 kW Mains voltage: 230 V Quill stroke: 65 mm Spindle taper: MT 2 Throat depth: 130 mm Including quick-action drill chuck 1–13 mm Including machine vice BMP 100 Availability: short-term Location: Flörsheim

Condition: ready for operation (used), Drill diameter: 16 mm Bedpfxozh H Nxo Af Aedh Spindle mount: MK 3 Overhang: 240 mm Quill travel: 100 mm Spindle speeds, infinitely variable via pole-change motor and 2 groups: 250 - 4000 rpm Drive motor: 380 V, approx. 1/1.3 kW Approximate footprint: 2200 x 620 x total 1770 mm Approximate weight: 280 kg

Condition: new, Year of construction: 2026, The CORMAK WS32 bench drill press is a robust and precise column drill for metal, designed for intensive operation in industrial and workshop environments. With high structural rigidity, an impressive spindle stroke, and tapping capability up to M24, this machine is a versatile tool for a wide range of machining applications. Key Advantages Tapping function – automatic reverse rotation enables safe and precise thread cutting 150 mm spindle stroke – allows deep-hole drilling without repositioning the workpiece High rigidity – 100 mm diameter column and stable cast iron base ensure excellent stiffness and vibration damping Belt drive system – five speed settings (280–1875 rpm) for precise speed adjustment to suit the material MK3 Morse taper – compatible with a wide range of drills and taps 360° rotating worktable – with T-slots, manually adjustable Enhanced safety – U-type spindle guard with limit switch and CE certification Design and Technology The CORMAK WS32 metal drill press is manufactured from high-quality seasoned cast iron, ensuring long-term durability and machining precision. The hardened spindle and transmission shafts are highly wear-resistant. A clear control panel and ergonomically arranged operating components improve operator comfort and ease of use. Precision and Performance Thanks to its heavy-duty construction and extended spindle travel, the WS32 ensures stable performance even in demanding applications. The ability to tap up to M24 makes it an ideal solution for machining heavy steel components. Smooth spindle operation and a flexible speed range enhance both drilling and tapping efficiency. Applications The CORMAK WS32 column drill is designed for: machinery and metalworking industries metal fabrication and tool rooms maintenance departments technical schools and training centers The machine enables precise drilling, reaming, and tapping in steel, cast iron, and non-ferrous materials. Standard Equipment Keyed drill chuck Drift key for taper removal Bdedpfx Afsrif Ude Ajh U-type spindle guard with safety limit switch Belt drive cover with safety switch Technical Specifications Parameter Value Max. drilling diameter (steel) 32 mm Max. tapping diameter (steel) M24 Column diameter 100 mm Column wall thickness 12.7 mm Spindle stroke 150 mm Spindle–column distance 265 mm Spindle–table distance 390 mm Spindle–base distance 745 mm Spindle taper MK3 Speed range 280, 400, 675, 1140, 1875 rpm Number of speeds 5 Table dimensions 380 × 400 mm Base dimensions 645 × 470 mm Machine height 1370 mm Motor power 1.1 kW Power supply 400 V Net weight 230 kg Overall dimensions 900 × 500 × 1400 mm

Condition: good (used), Bench drill, stand drill, pillar drill, pillar drill -Manufacturer: Flott, bench drill type M2 ST -Clamping table: 260 x 200 mm -Travel: 310 mm Bsdpfomzkg Rex Af Ajdh -Spindle holder: MK2 with drill chuck 3-16 mm -Projection: 240 mm -Speeds: 400 - 3500 rpm -Pillar: diameter 82 mm -Spindle stroke: 100 mm, depth stroke with fine adjustment -Motor power: 0.75 kW -Voltage: 400V -Dimensions: 750/340/H1100 mm -Weight: 135 kg