Used Horizon Bookbinding Machine for sale (65,159)

Condition: used, Year of construction: 1984, functionality: fully functional, We offer this used Makino MC 65 horizontal machining center, year of construction 1984. Type: MC 65 Serial number: 80.4000.0107 Year of manufacture: 1984 Manufacturer: Makino Model: MC65 Year of manufacture: 1984 Control: Fanuc System 6M Technical Specifications Horizontal CNC Machining Center Twin pallet system Pallet size: 500 × 500 mm X-axis travel: 630 mm Y-axis travel: 510 mm Z-axis travel: 510 mm Spindle taper: BT50 / ISO50 Spindle speed: 4,000 rpm Automatic tool changer: 40 positions Fanuc System 6M CNC control Included: Twin pallet system Gujdozivz Topfx Aa Esd 40-position automatic tool changer BT50 spindle Machine documentation (if available) If you have any questions or need more information, feel free to send us a message or give us a call.

Condition: used, Year of construction: 1987, functionality: fully functional, input voltage: 380 V, type of input current: three-phase, We offer this used HELLER BEA 05 horizontal machining center, year of construction 1987. Type: BEA 05 Serial number: 40311 Year of manufacture: 1987 Phase: 3~ Voltage: 380 V Frequency: 50 Hz Nominal current: 79 A Circuit diagram number: 5151 Manufacturer: HELLER Model: BEA 05 Gjdpszivzyjfx Aa Eoud Year of manufacture: 1987 Control: uni-Pro NC80-C Technical Specifications Vertical CNC Machining Center CNC control: uni-Pro NC80-C Vertical spindle SK50 spindle taper Rotary CNC table (4th axis) Automatic tool changer Machine weight: approx. 7,000 kg Installed power: 50 kW Power supply: 380 V / 50 Hz Air supply: 6 bar Floor space required: approx. 4.0 × 4.2 × 3.1 m The machine is working and used condition. If you have any questions or need more information, feel free to send us a message or give us a call.

Condition: used, Year of construction: 2005, x-travel 800 mm y-travel 800 mm z-travel 800 mm Control Siemens 840D total power requirement --- kW Gjdpfezhch Dsx Aa Eeud weight of the machine ca. --- t dimensions of the machine ca. --- m

Condition: ready for operation (used), Year of construction: 1997, - USED - 4-AXIS HORIZONTAL MACHINING CENTRE WITH PALLET CHANGER X-AXIS TRAVEL: 1500 mm Y-AXIS TRAVEL: 1200 mm Gusdpfjh Hfrnsx Aa Eed Z-AXIS TRAVEL: 1250 mm SPINDLE: 10-4000 rpm; 40 kW; HSK-A 100 PALLET: CONTINUOUS ; 1000X1000 mm; 1-500 rpm MAX ADMITTED LOAD: 2000 Kg TOOL MAGAZINE: CHAIN-TYPE ; 161 POS CONTROL UNIT: SIEMENS 840 C OVERALL DIMENSIONS: 8500 x 4800 x 4800 mm ACCESSORIES: SWARF CONVEYOR ; PAPER FILTER NOTE: COMPLETELY OVERHAULED MACHINE; HORIZONTAL AND VERTICAL AUTOMATIC HEAD; TURNING TABLE

Condition: ready for operation (used), A CNC horizontal machining center by Spinner is offered, equipped with a twin spindle and two dual tool changers. Travel X/Y/Z: 1000mm/850mm/850mm, distance from spindle center to pallet front face: 100-950mm, distance from spindle nose to table surface: 150-1100mm, rapid traverse X/Y/Z: 32m/min, pallet size: 2×630×630mm, max. pallet load: 1000kg, distance to table: 360mm, table top height above floor: 993mm, door opening: 1200mm, table threads: M16, tool interface 1/2: SK40/SK50, max. speed 1/2: 10000rpm/6000rpm, power S1 1/2: 22kW/22kW, power S3 1/2: 26kW/26kW, max. torque S1 1/2: 139Nm/556Nm, max. torque S3 1/2: 164Nm/656Nm, tool stations 1/2: 60/40, max. tool diameter 1/2: 80mm/115mm, max. tool weight 1/2: 8kg/20kg, control: Fanuc 0i. Machine dimensions X/Y/Z: 5970mm/3470mm/3362mm, weight: approx. 23000kg. Documentation available. Inspection by appointment possible. Gujdozipgcspfx Aa Eod

Condition: used, Year of construction: 2009, Technical details: x-travel: 630 mm y-travel: 630 mm z-travel: 500 mm number of spindle speeds: Guedpfx Aowdyyfea Eed spindle motor: 32 kW size of pallet: 500 x 500 mm b-axis: 36000 x 0,001 ° no. of workpieces in the magazine: 61 Stück tool taper: HSK 63 weight of the machine ca.: 15 t Single-Spindle Mechanical processing cylinder head VR6 *

Condition: good (used), Year of construction: 2011, Ref. -No.: 10598 Manufacturer: HELLER Type: MC 2000 Year of construction: 2011 Type of control: CNC-Steuerung Control: Siemens 840 D sl Storage location: Halberstadt Country of origin: Hermany Machine-No.: 50XXXX X-Travel: 800 mm Y-Travel: 800 mm Z-Travel: 1000 mm Work spindle torque (25% ED): 242 Nm Tool Taper: SK 40 Numbers Of Tools In Magazin: 54 Tool Piece Magazine With: 80 Pcs./pcs. Turning Speeds: 10000 RPM Drive Capacity - Spindle Motor: 17 kW High-Pressure Pump: 50 bar Speed range - main spindle: 10000 RPM Numbers Of Pallets: 2 Size Of Pallet: 630 x 500 mm Weight Of The Machine Ca.: 13000 t spindle running time: 7000 H Operating hours: 14000 H Preparation area: 4 x 90° hydraulic pressure: 200 bar Further information: - The machine has been measured - The geometry is in excellent condition - The spindle runs a little rough - Clamping towers and cutting tool holders are also included - 2 additional clamping towers - 2 replacement pallets - 2-axis servo tool changer Gedpjx Hn D Rsfx Aa Eeud - Scraper conveyor for dry machining - Cold light in the work area - Central cooling unit for motor spindle and control cabinet - Control unit at the workpiece setup station - NC-controlled rotary table - Clamping hydraulics The machine can be viewed under power by appointment.

Condition: good (used), Year of construction: 2017, Ref. -No.: 10596 Manufacturer: HELLER Type: H - 2000 Year of construction: 2017 Type of control: CNC-Steuerung Control: Siemens 840 D Storage location: Halberstadt Country of origin: Germany Machine-No.: 56XXX X-Travel: 630 mm Y-Travel: 630 mm Z-Travel: 630 mm B-Axis: 0,001 ° Table Load: 500 kg Max. Tool Length: 350 mm Max. Tool Diameter: 160 mm Tool Taper: HSK 63 Numbers Of Tools In Magazin: 80 Turning Speeds: 16000 RPM Tool changer: Doppelgreifer Max. Workpiece height: 850 mm Max. Torque: 95 Nm Rapid Travel X/Y/Z: 60 mm / min Rapid Traverse X-Axis: 80 m / min Rapid Travel Y-Axis: 80 m / min Rapid Traverse Z-Axis: 90 m / min Drive Capacity - Spindle Motor: 40 kW Internal cooling: 50 bar Numbers Of Pallets: 2 Size Of Pallet: 400 x 500 mm spindle running time: 1000 H Operating hours: 3000 H Workpiece interference circuit max.: 720 mm Media interface: 5 - fach Further information: - Equipped with NC rotary table. - State-of-the-art spindle technology. - Ideal for precise machining tasks. - Spindle hours: 1000. - Pallet can be rotated manually 4 x 90 - Hydraulic pressure 200 bar - Quick drill breakage check Machine can be viewed under power by arrangement Gusdpfjx Hn D Djx Aa Eed

Condition: good (used), Year of construction: 2008, Ref. -No.: 10564 Manufacturer: TOYODA Type: FH 630 SX Year of construction: 2008 Type of control: CNC-Steuerung Control: Fanuc 31i - A Storage location: Halberstadt Country of origin: Japan Serial no.: NS2XXX X-Travel: 1000 mm Y-Travel: 800 mm Z-Travel: 850 mm B-Axis: 360 ° Max. Workpiece Weight: 800 kg Max. Tool Weight: 27 kg Max. Tool Length: 545 mm Max. Tool Diameter: Ø 120 mm Max. Size Of Workpiece Lxwxh: Ø 1000 x 1000 mm Tool Taper: BT - 50 Tool Piece Magazine With: 60 Pcs./pcs. Spindle Speed: 6000 RPM Godpfx Aajxvw Izs Eeud Machine length: 7000 mm Machine width: 3500 mm Weight Of The Machine Ca.: 20,1 t Further information: - Equipped with IKZ and chip conveyor - NC rotary table 360,000 * 0.001° Machine can be inspected under power by arrangement.

Condition: good (used), Year of construction: 2012, Ref. -No.: 10558 Gsdpfx Aajxxpbxs Eoud Manufacturer: YOU JI Type: HMC 1200 BP Year of construction: 2012 Type of control: CNC-Steuerung Control: FANUC Series 18i-MB Storage location: Halberstadt Country of origin: Taiwan X-Travel: 1800 mm Y-Travel: 1500 mm Z-Travel: 1360 + 990 mm B-Axis: 360 ° W-Axis: 700 mm Table Dimensions (Lengthxwidth): 1200 x 1400 mm Table Load: 5.000 kg Max. Tool Weight: 25 kg Max. Tool Length: 400 mm Max. Tool Diameter: 125 mm Spindle Speed: 30 - 3.500 RPM Numbers Of Pallets: 2 Further information: 4-axis simultaneous machining IKZ (internal spindle cooling) AKZ (external spindle cooling) Synchronized walking (rigid thread cutting) Renishaw RMP60 workpiece probe (radio) Number of pallet changers for automatic pallet change: 2 Size: 1200 x 1400 mm Tool magazine, number of tools: 60 The machine is currently in production and can be viewed by appointment.

Condition: used, Year of construction: 1999, x-travel 1250 mm y-travel 910 mm z-travel 875 mm Control Siemens type 840 D size of pallet 800x800 mm numbers of pallets 2 turning speeds 20-6000 U/min transmission ratio 2 Feed 1-32000 mm/min 360x1 ° Gjdpfoyqu D Rox Aa Eeud turning speeds 16,5 U/min Table load 1150 kg spindle taper ISO 50 Tool changer 165 Pos. weight of the machine ca. 18,5 t IKZ 70 bar B - NC rotary table The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1992, grinding length 0800 mm grinding width 500 mm workpiece height 400 mm table-size 800 x 400 mm table speeds 1 - 25 m/min cross feed autom. 0 - 60 mm/Hub grinding wheel size 400 x 100 x 127 mm grinding spindle speed 1400/2800 U/min Gjdpfxjwgnz As Aa Ejud total power requirement 10 kW voltage 380 V weight of the machine ca. 6 t Machine has cooling arrangement, auto. vert. feed, dressing arrangement and wheel flanges. Control doesn't work continuesly !!

Condition: excellent (used), Year of construction: 2007, CNC Control: MSX-501III X axis mm: 730 Y axis mm: 730 Z axis mm: 850 B axis mm: 0.001 Pallet size mm: 500 x 500 Number of pallets: 2 Table load capacity kg: 500 Cutting feed mm/min X, Y, Z: 50,000 Max. rapid traverse m/min X, Y, Z: 50, 50, 50 Spindle speed rpm: 14,000 Spindle power kW: 22/18.5 Taper type: BT-40 Torque Nm: - Tool changer type: Chain Tool magazine positions: 60 Max. tool diameter mm: 70 Max. tool diameter with adjacent pockets empty: 140 Max. tool length mm: 500 Max. tool weight kg: 8 Coolant tank capacity l: 760 Through-spindle coolant bar: Yes Equipment Guodpfxjythpro Aa Eed Chip conveyor Internal coolant Rigid tapping Manuals, electrical diagrams, etc.

Condition: excellent (used), Year of construction: 2011, TECHNICAL DETAILS CNC control: MSX-501III X axis mm: 560 Y axis mm: 560 Z axis mm: 660 B axis deg.: 360.000 Table load capacity kg: 400 Cutting feed rate mm/min X,Y,Z: 60,000 Max. rapid traverse m/min X,Y,Z: 50 Spindle speed rpm: 12,000 Spindle power kW: 15 Taper type: ISO-40 Torque Nm: 120 Tool changer type: Chain Tool changer positions: 60 Max. tool diameter mm: 70 Max. tool diameter with adjacent positions empty mm: 170 Max. tool length mm: 450 Max. tool weight kg: 8 Coolant tank capacity l: 500 Through-spindle coolant (high-pressure): Yes EQUIPMENT Double chip conveyor ISO-40 taper High-pressure through-spindle coolant with pump Tool breakage detection probe Part measuring probe RENISHAW Gedpfsxfka Nsx Aa Ejud MACHINE DIMENSIONS Length mm: 3,755 Width mm: 2,300 Height mm: 2,610 Weight kg: 7,600

Condition: excellent (used), Year of construction: 2008, operating hours: 18,500 h, functionality: fully functional, controller manufacturer: Haas, controller model: haas, spindle motor power: 22,000 W, number of spindles: 1, number of slots in tool magazine: 40, Haas EC500 2008 ATC-40 tools . BT40. Gujdpfx Aasziflzo Eed 2 Pallets spndel time -18500H Spindel rpm- 12000 rpm X-axis travel: 813 mm Y-axis travel: 635 mm Z-axis travel: 711 mm Pallet size: 500 x 500 mm Number of pallets: 2 Automatic pallet changer under power Located in Israel ready for inspection

Condition: used, Year of construction: 1969, max. wheel diameter 160 mm gear width 355 mm max. module 4,5 min. module 0,5 centre distance 450 mm total power requirement 11 kW weight of the machine ca. 3,8 t dimensions of the machine ca. 2x17,1,6 m Guodpjvz Ec Isfx Aa Eed Wheel diameter - max. 160.175 mm Wheel width 355 mm Module - max. 4.5 Spindle bore 75 mm Center distance 410 mm Number of teeth - min. 2, 3 Cutter diameter max. 115 mm Cutter length max. 105 mm Center distance between milling cutter and workpiece - max. 138 mm Center distance between milling cutter and workpiece - min. 30 mm Milling head - swivels 120 ° Milling cutter speeds 70 - 400 rpm Axial feeds 0.25 - 4.0 mm/rev Radial feeds 0.09 - 1.5 mm/rev Total power requirement approx. 9.5 kW Machine weight approx. 3.5 t Space requirement approx. 1730x1400x1440 mm Equipment/accessories: - Changing wheels - milling arbors - Clamping device Dra8M7 - documentation

Condition: like new (used), Year of construction: 2023, functionality: fully functional, travel distance X-axis: 500 mm, travel distance Y-axis: 940 mm, travel distance Z-axis: 500 mm, controller manufacturer: FANUC, spindle speed (max.): 8,000 rpm, coolant supply: 40 bar, spindle nose: HSK80, Equipment: chip conveyor, documentation/manual, rotational speed infinitely variable, VIGEL TW 500H Bi.Z 2-Spindle 5-Axis CNC Machining Center · Year 2023 Overview High-productivity, twin-spindle, 5-axis CNC machining center designed for serial production of complex, precision components. Linear drives on the linear axes and direct-drive torque motors on the rotary axes provide high dynamics and consistent repeatability, with a positioning accuracy of 8 µm. Two synchronized HSK 80 spindles, spaced at 500 mm, machine two parts simultaneously – each served by its own 30-tool magazine – making this platform particularly well-suited for medium- and high-volume production in the aerospace, automotive, and precision component industries. Technical Specifications MACHINE IDENTIFICATION Manufacturer: VIGEL Model: TW 500H Bi.Z Type: 2-Spindle 5-Axis CNC Machining Center Year of Manufacture: 2023 CONTROL & DRIVES CNC Control: Fanuc i-Series Number of Axes: 5 Machine Drive: Linear drives Rotary Axes: Direct-drive torque motors Positioning Accuracy: 8 µm WORKING ENVELOPE X-axis travel: 500 mm Y-axis travel: 940 mm (600 mm working area + 340 mm for tool change) Z-axis travel: 500 mm Distance between spindles: 500 mm SPINDLES & TOOLING Number of Spindles: 2 (twin-spindle, synchronized) Tool Interface: HSK 80 Tool Magazine: 30 tools per spindle Max Tool Dimensions: L 360 mm × Ø 199 mm, max 6 kg/tool Spindle Speed: 8,000 RPM AUXILIARY EQUIPMENT Coolant Chiller: Included Coolant Filtration: KNOLL Mist Filtration: Yes Guedpezh Svqofx Aa Eod Chip Conveyor: Included PHYSICAL DATA Machine Weight: ≈ 19 t

Condition: new, Year of construction: 2022, operating hours: 700 h, functionality: fully functional, travel distance X-axis: 200 mm, travel distance Y-axis: 350 mm, travel distance Z-axis: 300 mm, controller manufacturer: SIEMENS, spindle speed (max.): 25,000 rpm, operating hours of spindle: 700 h, coolant supply: 80 bar, spindle nose: HSK40, number of spindles: 2, number of slots in tool magazine: 40, Equipment: chip conveyor, The BA W02-22 is a horizontal, twin-spindle machining center for 4-axis machining of small non-ferrous metal workpieces. Linear and torque motors in the feed axes guarantee maximum dynamics and very short non-productive times while maintaining high workpiece accuracy. SPECIAL MACHINE FEATURES — Monobloc steel/mineral-cast composite design — Linear motors in the X, Y, and Z axes; torque motors in the rotary axes — Gantry drive in the Y-axis with electronic coupling for high positional accuracy under eccentric load — Mass-optimized machining unit (“box-in-open”) — Work spindle available with HSK A40 (25,000 rpm) — Double swivel carrier with 2 integrated rotary axes for in-cycle loading/unloading — Fanuc robot loader WORKING RANGE — LINEAR AXES Spindle distance 250 mm X-axis 200 mm Y-axis (tool change position) 350 mm (525 mm) Z-axis 300 mm WORKSPINDLE HSK A40 Speed range 1 – 25,000 rpm Power (40% duty cycle) 18 kW at 10,500 rpm Torque (40% duty cycle) 17 Nm Nominal power 14 kW at 10,500 rpm Nominal torque 13 Nm Spindle bearing diameter 50 mm Spindle lubrication Minimum-quantity oil lubrication FEED DRIVES Three-phase linear motors, type 1FN3 (Siemens), with 3 cooling circuits. STANDARD PARAMETER SET X Y Z Max. rapid traverse 80 m/min 120 m/min 120 m/min TOOL MAGAZINE Godpfx Aszh Sqzea Eeud Rail-guided magazine chain in pick-up system. Magazine loading at ergonomic height, tools self-locking and protected against swarf and spray water. Air-sensing cleaning on magazine side. Maximum chain speed 100 m/min. Tool change system Pick-Up Capacity 2 × 20 magazine pockets INTEGRATED AUTOMATION WITH WORKPIECE MAGAZINE The machine is supplied with an integrated automation cell — an independent manufacturing cell with one-shift workpiece supply, ideal for small workpieces. Loading and unloading of the double swivel carrier are performed in parallel to machining time by an integrated 6-axis Fanuc LR Mate robot mounted on the ceiling, allowing more freedom of motion. The loading area is sealed against swarf and cooling lubricant, with parts lock for unprocessed and finished parts exchange in parallel with system production time. ROBOT — FANUC LR MATE 200ID The 7 kg robot performs multi-gripping, pallet movement, and handling of workpieces up to 0.7 kg with a double gripper. Internal line routing with integrated gripper control, ProfiNet communication between machine and robot. WORKPIECE MAGAZINE Workpieces are placed in pallets — up to 24 pallets stored in the elevator car, vertically cycled. Pallet size 632 × 436 mm (inlay 600 × 400 mm). Ideal for workpieces up to 100 × 100 × 50 mm. Pallet guidance in wear-free PE or hard-anodized PTFE-impregnated aluminum. Basic grid 18 mm allowing fine adjustment to workpiece height. Wear-free ball-screw drive.

Year of construction: 2000, condition: good (used), For sale: Horizontal flow packer + infeed conveyor from Dekapack Model: S4 - 35 / 2 Control: Siemens S7 Documentation & electrical diagrams available. The machine is complete. Everything included as shown in the photos Transport upon agreement. Godpfx Aowtq I Eea Eoud Price: €5000,- EXW If you have any questions or remarks, please let us know! Best regards, Leo Holland

Year of construction: 1997, condition: used, grinding length 1250 mm grinding width 350 mm workpiece height 450 mm CNC control Sinumerik 840D rotary table dia. 1200 mm Table dimensions 2 x (760 x 325) mm longitudinal stroke 800 mm vertical movement of grinding slide 450 mm cross movement of grinding slide 350 mm Distance table / spindle centre (horizontal pos.) 600 mm grinding motor 50 kW grinding wheel size 400 x 160 mm feed range (X /Y/ Z) 30 / 3 / 3 m/min min. input value 0,001 mm turning speed range 200 - 4000 U/min total power requirement 82 kVA weight of the machine ca. 16 t dimensions of the machine ca. 7,00 x 3,30 x 3,00 m Machine is sold as partially overhauled! MAEGERLE MGC Series are famous about various unique features: -Smooth slow and fast column motion and accurate positioning -Thermal stability by hydrostatic return oil circuit through machine base -Super precision Guodped Tcnlsfx Aa Esd -High stiffness and rigidity -Main spindle motor KESSLER 50kW. Our MGC is equipped with 180° swivel table diameter 1200 mm(FIBRO) and travelling column. The reason is to be able to make parts handling during the grinding operation. Accessories: Table dressing device, KNOLL HF 500/4000 water filtering unit with high pressure pump

Condition: used, Year of construction: 2001, serial number 208892 control Siemens 611 weight 6,3 t Gusdpfozf Nu Ejx Aa Eod

Condition: used, Year of construction: 1988, x-travel 1800 mm Gujdpfxszf Nuxo Aa Esd y-travel 700 mm z-travel 1200 mm ja 2 control Heidenhain 155 table: 700-2000 mm documentation ja dismantled ja weight of the machine ca. 12,5 t

Condition: used, Year of construction: 1999, travel distance X-axis: 2,040 mm, travel distance Y-axis: 1,295 mm, travel distance Z-axis: 1,198 mm, nominal power (apparent): 37 kVA, controller manufacturer: FANUC, workpiece length (max.): 1,000 mm, workpiece width (max.): 1,000 mm, workpiece weight (max.): 3,000 kg, DOUBLE TABLE MORI SEIKI MH-1000... MAINTENANCE PERFORMED BY MORI SEIKI AUTHORIZED SERVICE. X-axis Movement: 2000 mm Y-axis Movement: 1300 mM Z-axis Movement: 1200 mm Gujdpfezh Dc Nsx Aa Eod Platform Size: 1000×1000 mm Maximum Table Load: 3000 kg Spindle (Spindle) Spindle Taper: BT50 Maximum Spindle Speed: 6000 RPM Spindle Power: 37 kW (approx. 50 hp) Tool Capacity (ATC): 60 positions Chip Conveyor: Available Approx. Machine Weight: 40 Tons

Condition: excellent (used), CATALOGUE NUMBER 7908 TECHNICAL SPECIFICATIONS - Tool diameter, Wescott chuck 0-20mm - Max hole depth 155mm - Max milling length 250mm - Drill unit adjustment front/back, right/left + angle - Table adjustment up/down - Table swivel angle 0-45˚ - Working table dimensions 600x320mm - Four-point head 16-22-25-32mm - Material clamps 2 pcs - Motor power 2.2kW - Dimensions (L/W/H) 1050x800x1250mm - Weight 200kg ADVANTAGES – German-made Gusdpfx Aaey Tw Tzo Eed – Very good condition – Eccentric clamps, 2 pcs – Not repainted – Used drilling machine Net price: 6,500 PLN Net price: 1,550 EUR based on rate 4.2 EUR (Prices may change with significant fluctuations)

Condition: excellent (used), Year of construction: 1999, CNC horizontal machining center DECKEL MAHO DMC 60 H SIEMENS CONTROL Year of manufacture: 1999 Technical data: X-axis: 600mm Y-axis: 560mm Z-axis: 560mm B-axis: 360° Pallet: Number: 2 Size: 400x500mm Permissible load: 600kg Gjdevn Ra Sepfx Aa Eeud Weight: 10,500kg