Used Tapping Center for sale (15,658)

Condition: excellent (used), For sale: a CNC rotary table from the renowned Fadal Engineering (USA) brand, model VH65. A professional 4th axis designed for machining centers, especially Fadal VMCs, but it can also be integrated with other CNC machines using a suitable controller. Technical specifications: • Model: VH65 • Table diameter: 165 mm (6.5”) • Gear ratio: 90:1 • Pneumatic brake (M60 ON / M61 OFF) • Industrial multi-pin connector • Serial number: 4630298 Condition: used, mechanically sound, with normal signs of wear. Solid and heavy construction – ideal for precise 4-axis machining. Nlsdpoz Slc Sefx Ai Aoh

Condition: good (used), Year of construction: 1990, Johnford 5 VH Milling machine by Johnford with Fagor digital readout, year of manufacture 1990, in good condition CE-compliant!! Technical data: Year of manufacture: 1990 Working area Table clamping surface: 1370 mm x 250 mm Maximum table load: 350 kg Travel distances X-axis travel: 800 mm Y-axis travel: 390 mm Z-axis travel: 380 mm Vertical milling head Spindle speed (vertical): 70 rpm - 3600 rpm Spindle taper: SK40 DIN 2080 Quill stroke: 127 mm Feed Quill feeds (3): 0.04; 0.08; 0.15 mm/rev Drive power Main drive motor output: 3.75 kW Nsdpfx Asyalc Asi Aolh Dimensions and weights Dimensions (L x W x H): 2.54 m x 2.16 m x 2.24 m Weight: 1590 kg About the machine: This versatile universal milling machine combines all the advantages of the world’s best-selling milling machine with additional stability. Belonging to the category of conventional milling machines, it stands out as the top model of the 5 VH series with an SK 40 tool taper and a 30% higher net weight. Both the X and Y axes are equipped with infinitely variable feed units. The swiveling vertical milling head offers a wide speed range for machining steel and non-ferrous metals. Further features include a four-stage automatic quill feed, pneumatic tool clamping, and a large table for workpieces and clamping devices. Further milling machines from well-known manufacturers can be found on our website.

Condition: excellent (used), Year of construction: 2016, operating hours: 3,500 h, Quaser MF 500 C Quaser MF 500 C machining center with Siemens 828 D control, manufactured in 2016, in very good original condition. The machine comes from the training workshop of a renowned German mechanical engineering company. CE compliant!! Technical data: Year of manufacture: 2016 Working area and travels: X-axis (longitudinal): 550 mm Y-axis (transverse): 800 mm Z-axis (vertical): 610 mm A-axis (swiveling range): +30° to -120° C-axis (rotational axis): 360° (continuous) Table diameter / clamping surface: Ø 410 mm Maximum workpiece size: Ø 500 mm × H 300 mm Maximum table load: 200 kg Spindle taper: BT 40 Speed: 12,000 rpm Drive power: 15 kW Tool positions: 30 Number of simultaneous axes: 5 Nljdszdityopfx Ai Aeh Rapid traverse: 36 m/min Weight: 7750 kg About the machine: Offered is a Quaser MF 500 C machining center with a Siemens 828 D control. This machining center is in very good original condition. It comes from a company where it was only used to a limited extent for prototype manufacturing. Key features: The Quaser MF 500 C is a powerful, vertical 5-axis simultaneous machining center from the Taiwanese manufacturer Quaser. It is designed for the highly precise complete machining of complex workpieces in the aerospace, mold making, and general precision engineering industries. Stable construction: The machine is built to be massive and heavy, ensuring maximum stiffness and vibration damping, even during heavy machining. Tilting table: The swiveling round table enables full 5-axis machining. With support devices (counter bearings), workpieces weighing up to 500 kg can often be clamped. The Quaser MF 500 C has been mechanically and electrically inspected by us. Take advantage of the opportunity to inspect and test the Quaser MF 500 C on site while it is powered up. You can find more milling machines from well-known manufacturers on our website.

Condition: as good as new (ex-display), Year of construction: 2024, functionality: fully functional, travel distance X-axis: 3,500 mm, travel distance Y-axis: 1,600 mm, travel distance Z-axis: 1,000 mm, The horizontal machining centers in the XpertK series are characterized by their outstanding modularity. Choose from a variety of table variants and matching milling heads, complemented by a wide selection of spindles. The XpertK machines are ideal for special requirements where standard machines are not sufficient and offer customized flexibility and individuality Xpert K 3512 - Horizontal machining center - Series: Xpert K - Travel X/Y/Z: 3500 x 1200 x 1000 mm - Optional Y-axis: 1600 mm - Milling head: M-Series fork milling head - Spindle: 12,000 min-1 / 53 KW / 253 Nm - Tool holder: HSK-A100 - Control: Heidenhain TNC 640 - Clamping surface: 4,000 x 2,200 mm - Payload: 15,000 kg - Rapid traverse: 30 m/min Nodpfx Aor H Hhnsi Aolh - Acceleration: 3 m/s² Modularly expandable, further options: - Sliding table X-axis - Cross table X and W-axis - Rotary table X and C-axis (Ø 2,000 mm) - Table travel X-axis up to 6,000 mm - Table travel W-axis 1,200 mm - Movable work unit Y- (vertical), Z- (slide) and W-axis (1250 mm) - Milling and turning machining possible - 18 spindle variations - Clamping area can be extended up to 6,000 x 2,500 mm

Condition: good (used), Year of construction: 2007, functionality: fully functional, spindle speed (max.): 10,000 rpm, DECKEL MAHO DMC 635 V – Year of manufacture 2007 Technical data Manufacturer: DECKEL MAHO / DMG Model: DMC 635 V Year of manufacture: 2007 Machine type: Vertical CNC machining center Control system: Siemens Sinumerik 840D Axes: 3 (X / Y / Z) Working area: X-axis travel: 635 mm Y-axis travel: 510 mm Z-axis travel: 460 mm Table clamping area: 790 × 560 mm Max. table load: 600 kg Main spindle: Nlodpfx Aijz Symdj Ash Max. spindle speed: 10,000 rpm Tool holder: SK 40 Tool changer: Automatic tool changer Tool magazine: 20 positions (typical configuration) Equipment: CNC control system Siemens 840D Automatic tool changer Coolant system with external cooling No internal cooling (without coolant through the spindle) No chip conveyor Feed rate and rapid traverse: Rapid traverse X/Y/Z: 30 m/min Max. working feed rate: 20,000 mm/min Dimensions and weight: Machine weight: approx. 3,600 kg Installation dimensions: approx. 2,000 × 2,650 × 2,350 mm Total connected load: approx. 20 kVA Operating hours: approx. 24,000 Spindle hours: approx. 7,000 Images will follow.

Condition: used, MEP Syntax Line 25 Automatic Rebar Processing Center, Used Machine Manufacturer MEP S.p.A. (Made in Italy) Njdpfx Aiszg Uv De Aslh Model Syntax Line 25 Machine Functions Automatic straightening from coil Hydraulic cutting CNC-controlled bi-directional bending Processing Capacity (Rebar from Coil) Single-wire operation: Ø8 mm to Ø25 mm Double-wire operation: Simultaneous processing of 2 bars from Ø8 mm to Ø16 mm Material Storage Storage capacity: Up to 14 m³ Manual loading Collection tray: 12 × 2.5 m Overall Dimensions Width: 17,400 mm Depth: 2,400 mm Height: 1,600 mm Condition The built-in monitor is not operational. The machine is equipped with a video output, allowing an external monitor to be connected for operation.

Condition: good (used), Year of construction: 2014, Parts shown by hand not come. Nsdpfsz U Tikjx Ai Aslh

Condition: good (used), Year of construction: 2001, Machine is in good working condition. Nljdpfx Aioz Uvpme Aoh Parts shown by hand not come.

Condition: excellent (used), Year of construction: 2010, functionality: fully functional, machine/vehicle number: 2080082, Used CNC horizontal machining center, 5-axis, with dual spindle and dual table Technical data – SW BAW06-22 Manufacturer: SW – Schwäbische Werkzeugmaschinen GmbH Model: BAW06-22 Year of manufacture: 2010 Machine number: 2080082 Control system: CNC Design: Horizontal Number of axes: 5 Number of spindles: 2 Number of work tables: 2 Travel in X-axis: 600 mm Travel in Y-axis: 600 mm Travel in Z-axis: 510 mm Maximum spindle speed: 17,500 rpm Rapid traverse rate: up to 45 m/min Tool holder: HSK-A63 Machine weight: approx. 16,000 kg Accessories: Standard accessories Availability: Available immediately Machine description Used CNC horizontal machining center SW BAW06-22 with 5-axis machining, two work spindles, and a dual table system. The dual-spindle design allows two workpieces to be machined in parallel. The high spindle speed of up to 17,500 rpm enables productive and precise machining. Additional manufacturer data According to the technical data sheet from SW, the following values are specified for the BA W06-22 series: Spindle distance: 600 mm Spindle power: 2 × 35 kW Spindle torque: 2 × 80 Nm Tool magazine: 2 × 42 positions, optional larger Nedpo Aarpfofx Ai Aolh Maximum tool length: 425 mm Maximum tool weight: 10 kg Control system according to manufacturer: Siemens SINUMERIK 840D sl Operating voltage: 400 V / 50 Hz

Condition: like new (used), Year of construction: 2023, SCM Accord 40 fx CNC machining center with the following equipment: Working area X-Y = 6360 x 1905 mm, Z = 350 mm OF0158 Usable Z clearance height = 350 mm with H50 suction cups OF0165 Axis travel speed of Accord 40 fx Version PRO-SPEED OF0168 Pendulum (dual-zone) operation OF0169 Automatic axis lubrication OF0299 TELESOLVE remote maintenance via Internet 450328 eye-M PRO control console with integrated PC 450291 Additional fixed control panel 870068 TECPAD – remote control of machine functions 560058 No. 10 carrier rails MATIC – L1825 230429 MAXI working unit – Prisma KT 1 870046 Prepared for angle gearbox "Prisma KT-KS" 470014 Air nozzle for tool 870119 Device for tool length measurement 870120 Device for panel thickness measurement 870009 Drilling unit F16 OF0176 Front stop row H50 for worktable with 10 carrier rails 510205 Preparation for clamps for worktable with 10 carrier rails 480178 Front stop row H110 for worktable with 10 carrier rails 480105 Rear stop row H110 for worktable with 10 carrier rails 480137 First lateral stop row H110 for worktable with 10 carrier rails 480005 Suction cups H110, 145x145 mm, 36 pcs 480006 Suction cups H110, 145x55 mm, rotatable, 10 pcs 480007 Suction cups H110, 180x65 mm, rotatable, 10 pcs 480018 Suction cups H110, 145x30 mm, rotatable, 5 pcs 480410 Lifting devices H110, 8 pcs 350016 Vacuum pump 250 (300) m³/h 560538 Additional automatically adjustable base for MATIC 10 carrier rail 190046 PRO-SPEED safety system Nlodpfx Aieyfgzds Ash 524800 "SAV€NERGY" 2.0 energy saving system 210837 TR12 – lateral tool magazine 210056 Rapid 24 – rear tool magazine OF0182 Air conditioning for control cabinet OF0438 Human-machine interface software (HMI) MAESTRO ACTIVE OF0543 Operating system Windows 10 embedded 64 bit OF0422 Machine operating interface software Maestro cnc OF0435 Hardware dongle for Maestro cnc 524309 Maestro 3D-Advanced module 109993 MACHINE LANGUAGE: German SPECIAL FEATURES INCLUDED IN MACHINE CONFIGURATION: - Extension of maximum panel width to 2,120 mm for full processing; traverse length remains unchanged at 1900 mm. - 10 support suction cups for remnants MACHINE ALREADY DISMANTLED AND STORED. LIST PRICE 2023 EUR 399,890.--

Condition: excellent (used), Year of construction: 1997, Mikron HAAS VCE1000 vertical machining center Year: 1997 Axis X travel 1016 mm Axis Y travel 508 mm Axis Z travel 635 mm Table width 457 mm Table length 1220 mm Type of CNC HAAS Spindle taper ISO 40 Max. part weight on table 1575 kg ATC Number of tool pockets 20 Max. spindle speed 7500 rpm Machine dimensions length 3530 mm height 2985 mm width 2450 mm weight 5500 kg Accesories/options: - Chip conveyor - Through spindle coolant - Prepared for 4.axis ( drive and wiring included ) - Renishaw touch probe - Renishaw TS27 tool measuring Nlsdpfx Asz Tlhcei Ash In very good condition, coming from a Swiss tool shop.

Condition: used, Year of construction: 2012, CNC machining center Manufacturer: Unverzagt Type: UVA 550 Plus Year of manufacture: 2012 Control system: Siemens 828D Nljdpfx Aiowv Tm Nj Aoh Operating hours: approx. 3,000 Travel distances: X/Y/Z: 600 x 400 x 500 mm Tool positions: 20 Tool holder: SK40 Spindle speed range: 10,000 rpm Hexagon probing system Chip conveyor Spindle cooler IKZ (internal cooling system) 191026ä

Condition: good (used), Year of construction: 1990, CNC Machining Center Manufacturer: MORI SEIKI Type: Partner M300 A-1 Year of Manufacture: 1990 Control: FANUC O-M Travel distances: X/Y/Z: 400 x 300 x 495 mm Distance between spindle center and pallet table (Y-axis): 25 – 325 mm Distance between spindle nose and pallet table (Z-axis): 125 – 620 mm Rapid traverse rate: 24 m/min Feed rate up to 5 m/min Spindle: Ball screw: 36 mm diameter Feed drives FANUC AC X/Y-axis Model 5, Z-axis Model 10 Nljdpfx Aiot Rg E So Ash Main spindle speed: 100 – 6000 rpm Main spindle motor: AC 5.5 kW Main spindle taper: BT 40 Pallet: Pallet size: 315 x 315 mm Pallet indexing angle: 7.5 degrees Indexing accuracy: + / - 2 seconds Repeatability: + / - 1 second Pallet clamping force: 3,400 kg Maximum workpiece weight: 150 kg Automatic tool changer: Number of tools: 30 Tool change time: 2.5 seconds Collet clamping time: 7 seconds Maximum tool diameter: 110 mm Maximum tool length: 250 mm Maximum tool weight: 8 kg Special accessories: Workpiece end display with warning light Magazine for 30 tools Operating hour display Tool life monitoring Coolant system Work area lighting Weight: approx. 4,500 kg Footprint: 1,900 x 2,300 mm 191026ä

Condition: used, Year of construction: 1979, spindle bore: 41 mm, 2-axis milling machine capacity: 750 x 500 mm bore: 40.5 mm Njdpfxoz Tmzwe Ai Aolh

Condition: used, Year of construction: 2007, RÖDERS RFM 600 with RCE 1 – High-speed machining center – 42,000 RPM For sale is a high-quality vertical high-speed machining center, the RÖDERS RFM 600, manufactured in 2007, complete with an RCE 1, manufactured in 2017. This machine is ideally suited for the highly precise machining of graphite, aluminum, non-ferrous metals, as well as hardened tool steels, and is particularly used in tool, mold, and precision machine manufacturing. Technical data Year of manufacture: 2007 Travel distances X/Y/Z: 600 / 450 / 300 mm Table: 700 x 550 mm RÖDERS CNC control HSK-40 spindle Spindle speed up to 42,000 RPM 20-position tool changer Max. workpiece weight: 400 kg Machine weight: approx. 6.5 t Equipment RCE 1 rotary tool changer Smoke extraction system Well-maintained overall condition Ideal for tool and mold making, electrode production, graphite machining, precision milling, as well as HSC/5-axis milling. The machine can be inspected in operating condition after prior appointment. Location: Germany Subject to prior sale. _____ Subject to prior sale and errors in the technical data. The technical data has been compiled to the best of our knowledge, but does not constitute guaranteed characteristics. Our general terms and conditions apply; furthermore, the seller is not liable for typographical or data transmission errors. The appearance of the offered items corresponds to their age and the images shown. The technology and wear of the offered items are consistent with their age. Used machines are sold exclusively to commercial enterprises and without warranty. Nlsdpfszk Eu Sox Ai Ash

Condition: used, Year of construction: 2008, functionality: fully functional, 5-Axis Simultaneous Machining Center MAZAK Variaxis 630-5X II T with Turning Function and Top Specification. Control: MAZATROL Matrix Year of manufacture: 2008 Travel - X: 630 mm Travel - Y: 765 mm Travel - Z: 600 mm a-axis: +30 ~ -120° c-axis: +/- 360° Max. machining diameter: 730 x 500 mm Max. work height: 500 mm Number of tool changer positions: 80 Tool holder: SK40 Max. spindle speed: 18,000 rpm Max. rotary table speed: 1,100 rpm Rotary table diameter: 630 mm Swing diameter of workpiece: 730 mm Accessories: - Chip conveyor and tank - ICS (internal coolant supply) - Showa oil mist extraction unit - Renishaw probe The following features/options are available: - Linear scale system for X and Y axes - Tool magazine for 80 tools - Air blow unit at the workpiece - Oil mist extraction unit CRK 1500K - Coolant temperature control - Flood coolant 4.5 bar - Workpiece rinsing system - High-pressure coolant through the spindle 70 bar Nedpfox Db D Aox Ai Aslh - Pressure switch for coolant supply through the spindle - Chip conveyor ejection right (Consep) - MAZAK Monitoring System B incl. Renishaw probe MP10 - Preparation for visual tool identification system - Detachable electronic handwheel - Milling spindle synchronous tapping - Tool tip inspection for 5-axis simultaneous machining - Tool radius compensation 5-axis - EIA dynamic tool compensation 2 (incl. 1) - Max. program memory 8 MB - Rapid traverse – constant tilt angle during movement - MAZACC-3D high-speed software package - Form compensation for rotary axes - Ethernet operation capability - High-precision control for finishing operations - Cylinder interpolation G07.1 - Signal light (3-color LED) - 3-jaw chuck 21" - Additional work area lighting The machine is in very good condition and can be inspected under power at its current location.

Condition: used, functionality: fully functional, turning diameter over bed slide: 2,500 mm, total length: 3,750 mm, total width: 850 mm, total height: 1,350 mm, spindle speed (max.): 1,000 rpm, Global Nordic 25 lathe. Njdo Aa Iygepfx Ai Aslh Equipped with a three-jaw chuck, a four-jaw chuck, an eccentric four-jaw chuck, and various drills. 18 speeds. Hollow spindle, 78 mm. Speed n=rpm 12.5. 400V.

Condition: ready for operation (used), Year of construction: 2001, Available for immediate pickup from our location: Vertical machining center, Bridgeport Type VMC 800 Year of manufacture: 2001 Spindle renewed in 2026 (€13,000) Heidenhain TNC 410 Table size: 1000 x 500 mm X/Y/Z travel: 800 / 500 / 500 mm Table load capacity: 750 kg SK 40 22-tool changer Spindle speeds up to 10,000 rpm Drive power: 11 kW Vises, chucks Njdpfo Aa Irijx Ai Aelh Weight: 4 tons Price: €9,000 plus VAT, ex works

Condition: used, Year of construction: 2018, CNC-CONTROLLED MACHINING CENTER AUTHOR M 200 AUTHOR M200 3710x1620 Z250 - CNC-controlled machining center 1 Technical data Work area I.M.S. I.U. Work area X-axis 3710 mm * 146" * Work area Y-axis 1620 mm * 63¾" * Workpiece passage Y 1900 mm 74¾" Workpiece passage Z 250 mm 9¾ Workpiece length for pendulum machining 1700 + 1700 mm 67" + 67" Travel speed of the X-Y axes PRO-SPACE 56 m/min 184 ft/min Travel speed of the X-Y axes PRO-SPEED 78 m/min 256 ft/min * Distance covered by all tools in the X and Y direction; see the corresponding layout for further details. With a 5-axis motor, the dimension in Y increases to 1680mm (66"), for motor JQX or 1720mm (67½") for motor KS/KT max. Width of the loadable plate for horizontal drilling, electric spindle only oriented vertically, no central reference stops Installation data I.M.S. I.U. Installed power 23 - 28.5 KVA Electrical standard specifications 400 Voltage 50 Hz 3 phases Air consumption 450 Nl/min Compressed air consumption 4500 m³/h 2650 CFM Extraction air velocity 30 m/sec Extraction nozzle diameter 250 mm 9.8 Inches Noise level VSA * LAV * Drilling 72.2 74.6 Milling 74.3 80.7 Reference standard EN ISO 11202:1995* VSA = unloaded and without extraction * LAV = in operation with extraction Structure of the base body: The CNC machining center can be equipped flexibly with different milling units as well as multi-spindle drilling heads and many other units, up to dowel drilling units. In order to meet all requirements in the field of wood and plastic processing, as well as the demands of the users, each machine can be equipped with 3, 4 or 5 machining axes. The selection of drilling units extends to up to 34 drilling spindles with an integrated groove saw for the back panel groove or rabbet machining. The possibility of using this high-quality CNC machining center both as a cantilever table machine and with an aluminum grid table underscores the flexible range of applications and the performance of the M100 and M200 series. Powerful drilling heads, with individually selectable drilling spindles, max. RPM 8,000, and implemented in . technology, "the most robust drilling spindles on the market", with more than 1,000 maintenance-free application hours (lubrication interval of the drilling spindles). The possibility of being able to replace the drilling spindles within a very short time, "even without a technician", through the technology, without disassembling the drilling gear, sets a benchmark in the industry and is already standard on your machining center. Imagine your CNC machine performing hinge drilling in just one drilling operation (option), instead of the usual 3. An option that underscores our claim to offer you robust and high-performance units on our machines. Ideally and flexibly equipped for a wide variety of requirements. Whether manual or automatic, the FLEX cantilever work table allows vacuum cups and mechanical clamping elements, such as pneumatic clamps for window or curtain wall constructions (option), to be quickly, safely and cost-effectively adjusted to any material and clamping requirements, making your day-to-day work easier. Differently sized vacuum cups and clamping elements, which were developed in close cooperation with customers and users, are available as an option. Nljdpfx Aiszvhkys Aeh

Condition: ready for operation (used), Year of construction: 2006, overall weight: 6,000 kg, spindle motor power: 11 W, Heidenhain TNC 530 control Travel: 1000 x 510 x 510 mm Table: 1200 x 450 mm Tool changer: 24 tools Spindle: BT40, 8000 rpm Nledpj Abduvjfx Ai Ash Weight: 6000 kg

Condition: used, Year of construction: 1982, spindle bore: 37 mm, spindle speed (max.): 3,000 rpm, overall weight: 1,500 kg, 2-axis Sony vision system Nsdpfx Ais Ad Ibxo Aslh Capacity: 750 x 360 mm Spindle speed variator, maximum: 3,000 RPM Bore: 37 mm

Condition: ready for operation (used), Year of construction: 1998, Available immediately, ex works: Vertical CNC machining center, SW Schwäbische Werkzeugmaschinen Type BA 35 300 Year of manufacture: 1998 CNC control: Siemens 840 D Travel distances X/Y/Z: 2650/500/500 mm Swinging operation possible: 2 x 750 mm Spindle: 17 kW Tool holder: SK 40 Nodpfxs Adnwae Ai Aolh Chain magazine: 36 positions Spindle speeds up to 10,000 rpm Chip conveyor Weight: 9 tons Price: EUR 6,500.00 plus VAT, ex works.

Condition: ready for operation (used), Year of construction: 1998, travel distance X-axis: 800 mm, travel distance Y-axis: 510 mm, travel distance Z-axis: 510 mm, rotational speed (max.): 10,000 rpm, spindle speed (max.): 20,000 rpm, Fanuc control system Nlsdpoy Ndlpefx Ai Ajh 2 tables, 1100 x 600 mm 40-tool changer BT40 spindle Maximum spindle speed: 20,000 rpm 2 chip conveyors

Year of construction: 1982, condition: used, Offered for sale is a conventional center lathe with lead screw and feed rod. Distance between centers: 3000mm. Swing over bed: 710mm. Center height: 342mm. Spindle speed range: 8-1250rpm. Number of spindle speed steps: 23. Longitudinal feed: 0.056-10mm/rev. Cross feed: 0.028-5mm/rev. Metric thread pitches: 1-176mm. Max. workpiece weight between centers: 2500kg. Max. workpiece weight between centers with steady rest: 3000kg. Tailstock quill travel: 300mm. Equipped with digital readout, three-jaw chuck, four-way tool post and tailstock. Weight: approx. 5400kg. Overall dimensions X/Y/Z: approx. 5325mm/1510mm/1510mm. Inspection possible by arrangement. Nlodps Ad Nq Iofx Ai Aeh

Condition: good (used), Control system: Siemens 840 D Turning diameter: 290 mm Turning length: 850 mm Distance between centers: 600 mm Spindle bore: 103 mm Spindle speed: 3,000 rpm Driven tool speed: 3,000 rpm Chip conveyor Nlsdpfj Afacdox Ai Ash Weight: 11,000 kg