Used Quickwood Fladder System Brushing Sanding Machine Orbital for sale (84,497)

Year of construction: 1995, condition: not inspected (used), Number of sanding units 2 st. sanding width 180 mm Sanding height max. 150 mm MAWEG Robert Hildebrand Saturn Duo Chedpfx Adjzqgg Aoyea Professional two-belt finish sanding machine with brushing unit Double-sided; sands from top and bottom Pneumatic belt oscillation Pneumatic belt tensioning Feed via top and bottom conveyor belts with spring-loaded hold-down rollers; infinitely variable speed (5–15 m/min) Workpiece thickness adjustment with pre-selectable stock removal amount at machine infeed, based on sensing the raw timber thickness Adjustment to wood thickness via motorized positioning of the machine's upper section Digital thickness setting via mechanical counter with 0.1 mm display and zero-point adjustment Safety switch for oversized wood thickness at machine infeed Double-sided brushing unit with integrated workpiece blow-off Sanding belt blow-off (top and bottom) Belt breakage monitoring switch with automatic shutdown of all drives Technical data: Top motor: 4 kW Bottom motor: 4 kW Top brush: 0.37 kW Bottom brush: 0.37 kW Feed drive: 0.5 kW Height adjustment: 0.12 kW Compressed air requirement: 6 bar, 400 NL/min Sanding belt speed: 25 m/sec Machine dimensions: 1,600 mm length 1,150 mm width 1,800 mm height Workpiece dimensions: Min. thickness 15 mm, max. thickness 150 mm Min. width 10 mm, max. width 180 mm Min. length 290 mm 4 extraction ports: 2 x 120 mm, 2 x 80 mm; required air velocity at extraction port: 25 m/sec (Technical specifications according to manufacturer – subject to change/no guarantee!)

Condition: good (used), Year of construction: 2006, functionality: fully functional, Table size: 3000 x 1000 mm Drive power: 4.0 kW Belt speed: 8 – 25 m/s Table height adjustment: 0 – 630 mm Belt length: 9000 mm Space requirement: 4750 x 2300 mm Machine height: approx. 2500 mm Compressed air: 6 bar Features: - Two belts for pre- and finish grinding - Triangular guide for the belts, providing unobstructed visibility and freedom of movement - Pneumatic belt tensioning with ball bearings - Adjustable belt speed - Tilting of the belts up to 90° - Belt self-centering Cjdezlh Nzopfx Adyoha - Pneumatically opening belt channels - Manual workpiece movement in 3 axes - Each axis with brake or locking mechanism - Vacuum clamping for the workpieces

Condition: excellent (used), Year of construction: 2021, Renishaw Type: Equator 500 Year of manufacture: 2021 Item description: For sale is a Renishaw Equator™ 500, a high-precision industrial 3D measuring and inspection system designed for series production and process control on the shop floor. The Equator 500 is not a traditional coordinate measuring machine (CMM), but a comparative measurement system developed specifically for fast, repeatable measurements directly in the production environment. It is ideal for mass production, in-process measurements, and automated inspection routines. The unit is perfectly suited for checking dimensional accuracy, geometric tolerances, and position tolerances of workpieces, and can provide feedback to CNC machines. The software loads correctly, system status as per display: "Started OK" (see photos). Features & Application Areas: - 3D measurement of workpieces - Comparative measurement principle (very fast inspection cycles) - High repeatability in the micrometer range - Real-time temperature compensation - Suitable for shopfloor use - Automation ready (e.g. robot loading) - Ideal for series production, spot-checks, and process control Typical Industries: - CNC manufacturing - Metalworking - Automotive / supplier industry - Mechanical and tool engineering Technical Data (manufacturer information / approximate values) Manufacturer: Renishaw Model: Equator™ 500 (H+150) Device type: Comparative 3D measuring system / CMM Measuring range: X / Y: approx. Ø 500 mm Z: approx. 150 mm Measurement principle: Comparative coordinate measurement technology Temperature-compensated measurement Accuracy: Very high repeat accuracy Measurement accuracy in the micrometer range (depending on application and strategy) Control & Software Controller type: Equator 500 Software version: 2.5.21.1 RRTLOS version: 5.1.12 Operation via PC-based Renishaw software Electrical Data: Supply voltage: 230 V AC Frequency: 50 / 60 Hz Power requirement: approx. 1 kW Dimensions (approx.) Total height: approx. 1,900 mm Footprint / diameter: approx. 1,200 mm Weight (approx.): 130 kg Condition: used Scope of delivery: (see photos) - Renishaw Equator™ 500 measuring system - Controller / industrial PC - Monitor - Keyboard and mouse - Base frame Chsdezix Nmopfx Adyja - Accessories as shown in the photos (Subject to technical modifications and errors. All data provided without liability!) For further questions, we are happy to assist you over the phone.

Condition: used, Year of construction: 2022, Belt width: 150 mm Belt length: 3000 mm Table size: 960 mm x 350 mm Auxiliary table: 330 mm x 330 mm Chsdpfxszq Dczj Adyoa Veneer sanding device: yes Oscillation: yes Tilting sanding unit: yes Extraction port: 120 mm Motor power: 3 kW Machine length: 1910 mm Machine width: 840 mm Weight: 330 kg

Condition: as good as new (ex-display), Year of construction: 2024, The robust Junior R1 offers all the features that a modern edge sanding machine should have. A solid, cast iron grinding unit with a powerful motor ensures maximum sanding performance. The work table, which is height-adjustable by spring pressure, allows for optimal belt utilization and safe operation. Optionally, a belt oscillation, stepless unit swivel, veneer sanding device, and an additional table for sanding work on the idler roller can be retrofitted. The machine is supplied with a range of sanding belts; a miter and angle stop are also included in the scope of delivery. Technical data: • Motor power: 2.2 kW • Sanding belt size: 150 × 2280 mm • Sanding belt speed: 22 m/sec Chodpfx Ajd R Ev Djdyea • Table size: 750 × 350 mm • Space requirement: 1000 × 800 mm • Weight: from 180 kg • Dust extraction diameter: 100 mm Location: In stock at warehouse 54634 Bitburg - free for collection - Can be shipped for an additional fee.

Condition: as good as new (ex-display), Year of construction: 2026, 5222454 LIBRA 45/2 RTC 135 Wide Belt Sander 5257433 "Z" Designation for RTC 135 5257452 Vacuum table with electric fan 3 kW 5257453 Oscillating belt air-blast device for 5257454 Oscillating belt air-blast device for 5257462 Reinforced motor 15 kW (20 HP) 5257485 Roller table at infeed and outfeed for 5257499 Grooved rubber pressure roller, 2nd position 5257500 Grooved rubber pressure roller, 3rd position 5257504 Infinitely variable conveyor feed with inverter 5257605 Door with inspection window 5257606 LED lamp for internal illumination TECHNICAL DATA Dimensions and Weights Length (product) approx. 1800 mm Width/depth (product) approx. 2000 mm Height (product) approx. 2070 mm Codey Ehiwjpfx Adyoha Extraction Connection Number of extraction ports: 2 Extraction port diameter: 200 mm Electrical Data Feed motor power: 0.8 kW Connection voltage: 400 V Mains frequency: 50 Hz Height adjustment motor power: 0.25 kW Output power (motor power): 11 kW Sanding Unit Sanding belt length: 2150 mm Sanding belt width: 1370 mm Max. sanding width: 1350 mm Feed Unit Feed speed: 4.5 / 9 m/min Workpiece Min. workpiece height: 4 mm Max. workpiece height: 170 mm Product Information EU 2023/2854 Type of generated data: usage data Format of generated data: common, machine-readable formats, e.g., JSON Data volume: up to 5 MB Continuous real-time data generation: yes Data storage location: on the device and a remote server Data access: on the device and via physical and wireless interfaces Location: ex stock 54634 Bitburg - immediately available -

Condition: new, Year of construction: 2024, The Uniq series is a full-fledged base model in our product range and shares all the characteristics that have made the Kündig edge sanding machine renowned in the market as a robust, versatile precision tool. Part of its extremely robust construction is the motor-driven oscillating sanding unit, which offers a maximum oscillation stroke of 90 mm and the possibility of motor-driven inclination of up to 45°. All common edge processing operations can be performed at the up to four sanding stations. Kündig Uniq edge sanding machine, front and rear Ingenious design – the sanding unit The heart of all our edge sanding machines is the sanding unit. It offers a range of intelligent functions and features. For example, in our machines, the sanding belt does not oscillate by tilting the belt rollers. Instead, the entire sanding unit moves up and down. The oscillation stroke, as well as the oscillation range, are easily set by pressing a button. Thanks to the flexible adjustment and the large oscillation stroke, sanding belts can be used optimally over their entire width, without laborious adjustment of the worktable height. The oscillation mechanism is driven by a separate motor. The tilting of the sanding unit is also conveniently done using a rotary switch and with the help of its own motor. The unit can be tilted between 90° and 45°. Thanks to the well-thought-out pivoting mechanism, the full oscillation is always available and simultaneous sanding on both sides is possible. The different table heights of the front and rear sanding stations also ensure that the belt is not used at the same height at the same time. Furthermore, the combination of the pivoting mechanism and the different table heights ensures that the distance between the sanding unit and the worktable remains minimal at every angle of inclination. Changing the belt is also quick and easy, taking only seconds. The four sanding stations Chodpofig Rwefx Adyoa 1. Sanding station: "Veneer side" The front sanding station is used for the precise calibration of materials and functions like a planing machine. The feed stop is adjusted using a rotary handle to set the material removal to within a tenth of a millimeter. Importantly, the stop is not tilted. The feed stop, sanding pad, and discharge stop are always parallel to each other. Rounding of workpieces is thus excluded. Fine adjustment of the sanding pad for grain compensation or setting to zero between stops and pad is possible via a handwheel. The massive worktable is fitted with sliding pads on this side. 2. Sanding station "Solid wood side" This station is ideal for sanding flat, angled, chamfered, or externally rounded workpieces. Again, the entire sanding unit oscillates. The belt runs across its entire width on a graphite surface that keeps it cool. On the solid wood side, there is also a mitre stop. Supplied accessories: Half-round table Additional table with sanding rollers Location: In stock, 54634 Bitburg - immediately available -

Condition: new, Year of construction: 2026, Heavy-duty machine stand guarantees high torsional rigidity and vibration-free operation. Improved sanding results through sanding belt oscillation via a separate geared motor. Oscillation can be switched on or off as desired. Veneer edge sanding device with fine adjustment included as standard. Grooved infeed guide rail for sanding veneer overhangs. Quick changeover from veneer to solid wood sanding. Height-adjustable sanding table to utilize the full sanding belt width. Height adjustment of the sanding table and swiveling of the sanding unit via handwheels. Height-adjustable auxiliary table with dust extraction for sanding radii. Optimal chip removal through dust extraction at the unit and the cross table. Automatic compensation of belt length differences through spring-loaded belt tension. Dimensions and weights Length approx. 1900 mm Width/Depth approx. 810 mm Height approx. 1230 mm Weight approx. 290 kg Dust extraction connection Dust extraction nozzle diameter 120 mm Drive power Oscillation motor 0.25 kW Chsdeff Ed Topfx Adyea Work table(s) Work table length 960 mm Work table width 352 mm Work table height adjustment 210 mm Cross table height min. 730 mm Electrical data Power consumption 3 kW Connection voltage 400 V Phase(s) 3 phases Type of current AC Mains frequency 50 Hz Sanding unit Sanding belt length 3000 mm Sanding belt width 150 mm Belt running speed(s) 20 m/s Sanding area length 1050 mm Sanding area width 220 mm Swivel range 0 – 45 ° Oscillation stroke 20 mm Availability: Short-term

Condition: like new (used), Year of construction: 2025, Holzkraft Edge Sanding Machine Model: KSO 200 F with veneer sanding equipment Sanding unit tiltable up to 45° via lever The machine frame is made of welded steel, ensuring high torsional rigidity and vibration-free operation. Oscillating sanding belt with separate geared motor for improved sanding results Oscillation can be activated as needed Sanding shoe with graphite coating for extended belt life Height-adjustable sanding table to utilize the entire sanding belt width Height-adjustable auxiliary table with extraction for sanding radii Spring-loaded belt tension automatically compensates for belt length variations Double extraction system Extendable roller table extension With rubber-coated sanding drum Veneer edge sanding device with fine-adjustable contact shoe, pressure rollers, and stop rulers Infeed ruler with groove for overlapping veneer Quick changeover from veneer edge to solid wood sanding possible Dimensions and Weights Length approx. 1900 mm Width/depth approx. 900 mm Height approx. 1350 mm Weight approx. 290 kg Dust Extraction Connection Suction nozzle diameter 140 / 100 mm Drive Power Oscillation motor 0.25 kW Working Tables Working table length 960 mm Working table width 350 mm Working table height adjustment 230 mm Height min. 735 mm Height max. 965 mm Longitudinal table height adjustment 230 mm Cross table length 330 mm Cross table width 330 mm Cross table height min. 720 mm Cross table height max. 900 mm Cross table height adjustment 180 mm Electrical Data Main drive motor power 3.0 kW Codpfx Aey Iu N Asdysha Connection voltage 400 V Sanding Unit Abrasive belt length 3000 mm Abrasive belt width 200 mm Belt speed(s) 20 m/s Sanding surface length 1050 mm Sanding surface width 200 mm Oscillation stroke 20 mm Location: Ex stock 54634 Bitburg — Immediately available —

Condition: new, Year of construction: 2024, Holzkraft Edge Sander Type: KSO 200 F with Veneer Sanding Attachment Chsdpolht H Njfx Adysa Sanding unit can be swiveled up to 45° via a lever The machine stand made of welded steel guarantees high torsional rigidity and vibration-free operation. Oscillating sanding belt with separate geared motor for better sanding results Oscillation can be switched on/off as required Sanding pad with graphite coating for a longer service life of the sanding belt Height-adjustable sanding table to utilize the entire width of the sanding belt Height-adjustable auxiliary table with dust extraction for sanding radii The spring-loaded belt tension automatically compensates for belt length differences. With double dust extraction Extendable roller table extension With rubber-coated sanding roller Veneer edge sanding attachment with contact shoe with fine adjustment, relief rollers and guide rails With grooved infeed guide for veneer overhangs Quick changeover from veneer edge sanding to solid wood sanding is possible Dimensions and Weights Length approx. 1900 mm Width/Depth approx. 900 mm Height approx. 1350 mm Weight approx. 290 kg Connection for dust extraction Dust extraction nozzle diameter 140 / 100 mm Drive power Oscillation motor 0.25 kW Work table(s) Work table length 960 mm Work table width 350 mm Work table height adjustment 230 mm Height min. 735 mm Height max. 965 mm Longitudinal table height adjustment 230 mm Cross table length 330 mm Cross table width 330 mm Cross table height min. 720 mm Cross table height max. 900 mm Cross table height adjustment 180 mm Electrical Data Power of drive motor 3.0 kW Connection voltage 400 V Sanding unit Sanding belt length 3000 mm Sanding belt width 200 mm Belt running speed(s) 20 m/s Sanding area length 1050 mm Sanding area width 200 mm Oscillation stroke 20 mm Location: In stock at 54634 Bitburg - available immediately -

Condition: new, Year of construction: 2025, Designed for professional structuring and sanding operations Motorized height adjustment of the working units with digital display Units can be switched on individually Highly durable, rubberized conveyor belt Infinitely variable feed rate Infeed height remains constant Models str l with infinitely adjustable, inverter-controlled brush speed: this enables precise adjustment of the speed to the workpiece material, making it particularly suitable for sensitive materials. Unit for saw-cut appearance available as an option Dimensions and weights Length approx. 1300 mm Width/Depth approx. 1000 mm Height approx. 1300 mm Weight approx. 440 kg Dust extraction connection Extraction nozzle diameter 2 x 150 mm Brushes Diameter 190 mm Length 300 mm Rotation 1500 min⁻¹ Electrical data Power of drive motor 2 x 3.0 kW Power of feed motor 0.22 kW Power consumption 6.25 kW Connection voltage 400 V Chjdpfx Adeff Hdijyja Phase(s) 3 Ph Type of current AC Mains frequency 50 Hz Noise emission Sound power level Lw (idle without extraction) 65 dB(A) Sanding unit Sanding width max. 300 mm Feed unit Feed speed 1 – 13 m/min Workpiece Height max. 300 mm Weight max. 100 kg

Condition: excellent (used), Year of construction: 1993, Enorm edge sanding machine (now Kündig) In very good condition. Codpezbyt Eefx Adyoha Type: LBK 160 Year of manufacture: 1993 With veneer edge sanding attachment Oscillation can be switched on. Electric height adjustment of the sanding unit Table can be tilted up to 45 degrees Sanding belt width 150 mm Sanding belt length 2600 mm 3 kW motor 2 additional motors for height adjustment and oscillation With feed system Weight approx. 400 kg Location: in stock at 54634 Bitburg - immediately available -

Condition: new, Year of construction: 2025, Holzkraft Edge Sander: KSO 150 F PRO With oscillating sanding belt for the best sanding results Item number: 5390020 Brand: Holzkraft Sanding unit can be pivoted using a hand crank Chedpfx Adjv Sk Nneysa The welded steel machine stand guarantees high torsional rigidity and vibration-free operation Oscillating sanding belt with separate gear motor for better sanding results Oscillation can be optionally activated Granite-coated sanding sole for a longer sanding belt service life Height-adjustable sanding table for utilizing the entire sanding belt width Additional table with extraction openings for sanding radii on the rubberized guide roller Sanding sleeve device with attachable work table The spring-loaded belt tension automatically compensates for belt length differences With adjustable stops, ideal for veneer sanding The grooved veneer stop allows the veneer overhang to be adjusted TECHNICAL DATA Dimensions and Weights Length (product) approx. 1700mm Width/Depth (product) approx. 1000mm Height (product) approx. 1150mm Net weight approx. 300kg Extraction connection Number of extraction nozzles: 2 Extraction nozzle diameter: 100mm Worktable(s) Worktable length: 950mm Worktable width: 450mm Worktable height adjustment: 110mm Electrical data Connection voltage: 400V Mains frequency: 50Hz Oscillation motor power: 0.11kW Sanding unit Sanding belt length: 2640mm Sanding belt width: 150mm Belt rotation speed(s): 14m/s Oscillation stroke: 15mm Sanding surface length: 800mm Sanding surface width: 150mm Sanding unit pivoting 0 – 45° SCOPE OF DELIVERY 1x Sanding Belt K100 5x Rubber Rollers Ø25, Ø30, Ø40, Ø45, Ø50 mm 6x Sanding Sleeves K80 - Ø25, Ø30, Ø35, Ø40, Ø45, Ø50 mm On-Board Tool Kit Miter Gauge

Condition: new, Year of construction: 2025, Edge grinding machine with an overhead feed mechanism What distinguishes the Uniq-S from the Uniq is the feed system integrated into the machine table, featuring a rubberized feed belt and an overhead pressure bar. This significantly simplifies the grinding and production of bevelled and chamfered edges, as well as the serial grinding of workpieces. Furthermore, it provides assistance when processing exceptionally large or small parts. The feed speed can be continuously adjusted between 3 and 15 m/min. A soft conveyor belt at the bottom and rubberized rollers on the upper pressure bar gently convey the material. An optional second, lower conveyor belt is also available. The upper pressure rollers can also be replaced with a rubber band, which is particularly helpful when grinding extremely small parts. The Uniq-S is recommended as an all-rounder that enables all types of processing – from solid wood to fine veneer edges – with high quality. The continuously adjustable feed speed allows for optimal adaptation to the material. 1. Grinding station: “Veneer side” 2. Grinding station: “Solid wood side” 3. Grinding station: “Additional table” 4. Grinding station: “Half-round table” Location: Available from stock in 54634 Bitburg - immediately available - Csdehqb Rcepfx Adyoha

Condition: good (used), Year of construction: 1997, Manufacturer: MABO Model: BABY S.A.S. BABY 80 Machine type: Edge sanding machine Technical Data Distance between rollers: 1,050 mm Max. sanding belt width: 120 mm Number of speed settings: 1 Main motor: 1.1 kW Sanding belt horizontal Sanding belt tiltable Vertical upwards Weight approx.: 95 kg Space requirement length: 2.65 m Space requirement width: 0.55 m Space requirement height: 1.1 m Chedpjxgvcxofx Adyoa Location: from stock 54634 Bitburg - Immediately available -

Condition: used, Year of construction: 2010, functionality: limited functionality, BOERE sanding machine. Codpfezlr N Ejx Adyeha Condition: requires refurbishment. The chain needs to be overhauled, as does the height adjustment mechanism.

Condition: as good as new (ex-display), Year of construction: 2025, operating hours: 3 h, functionality: fully functional, working width: 400 mm, total length: 2,150 mm, total height: 1,600 mm, total width: 1,000 mm, working height: 950 mm, input voltage: 400 V, year of last overhaul: 2025, power: 1.5 kW (2.04 HP), warranty duration: 12 months, compressed air connection: 8 bar, - DEMO machine from our technicial center for special price! - Since 1970 Ceetec A/S produces wood painting machines in Norre Aaby, Denmark. According to the motto "keep it simple" all machines are reduced to necessary things combined with innovative technology where it makes sense for our customer. This makes our machines very long living but also very cost effective for the customer. Our brush painting machine A250 is equipped with flood nozzles for painting all around and with up to 8 brushes (each 2 per side) and can paint wood for interior and exterior on all four sides in one shift. Speed: 16-42m/min max. height: 250mm Chedpsffc Raefx Adyja max. width: 250mm resp. 380mm (A380) min. length: 800mm It can be combined with our innovative drying systems or used as a stand alone machine. You are interested and want to see a line working? No problem, we will organize a visit at another customer for You. Do You have further questions? Please feel free to contact us whenever You want!

Condition: ready for operation (used), A manual Unitool micro and fine blasting cabinet is available. Operating pressure range: 0.5bar-10bar. Blasting media: aluminum oxide. Blasting media grain size: 120µm. Documentation available. An on-site inspection is possible. Chedpfx Aozqfw Hjdyea

Condition: used, Year of construction: 1997, functionality: fully functional, Fully functional wire brush grinding machine. Codpfsznzbvsx Adysha

Condition: excellent (used), Year of construction: 2005, Year of manufacture: 2005 Equipment and technical data: - Can be operated from both sides with a flat and a contact sanding surface - Sanding belt size 200 x 2000 mm - Belt drive motor 3 kW - Oscillating stroke programmable from 10-90 mm - Sanding head can be tilted motorically up to 45 degrees - CE compliant / dust tested Accessories: - Additional table with sanding rollers Codpfx Ajzi Hagodyjha - Half-round table on the belt drive roller - Chassis LxWxH 1800x1000x1500 mm Weight 610 kg Location: in stock at warehouse 54634 Bitburg Availability: immediate

Condition: good (used), - All rubber rollers new or as good as new - Belt length 3000 mm - Year of manufacture - Price On request Csdpfxjulvlkj Adyjha

Condition: good (used), Vibratory finishing machine pre-filter system, filter system, pre-filter tank, water filter for rotary vibrator, vibratory finishing machine, vibratory finishing system, vibratory finishing rotary vibrator, vibratory finishing system, continuous vibrator -Pre-filter system: for vibratory finishing machines or other applications Chodjigamujpfx Adyja -Transport rack: mobile, with 2 filter inserts -Collection container: Volume approx. 350 liters -Overall dimensions: 1400/620/H920 mm -Weight: 106 kg

Condition: good (used), Parallel joint system for thread cutting machine, telescopic arm drill holder, drill, rotary drill, magnetic drill, impact drill -Parallel joint system: for thread cutting machines, drill press holders or similar uses Chsdpeyuu H Hjfx Adysa -Hole: Ø 36 mm -Dimensions: 535/80/H770 mm -Weight: 21.9 kg

Condition: good (used), Brush cylindrical grinder, external cylindrical grinder, internal cylindrical grinder, centering grinder, center grinding machine, hydraulic universal cylindrical grinder, polishing machine -Manufacturer: WMW Heckert, Hydraulic universal cylindrical grinding machine Chsdpeg Uggtsfx Adyoa -Spindem lotor: VEB 0.8/1 kW / 1410/2840 rpm -Hydraulic drive: ADDA 0.75 kW -Centre height: 270 mm -Max. material diameter: Ø 320 mm when converted -Brush: max. Ø 250 mm -Center distance: 420 mm -Dimensions: see photos -Base cabinet: with extensive accessories incl. -Dimensions: 1720/920/H1230 mm -Weight: 790 kg

Condition: used, Weld beveller, weld bevel former, weld seam preparation, weld bevel forming machine, edge milling machine, edge milling machine, mobile milling machine -with: rail system -12x rails length: 1210 mm -Bevel length: max. 30 mm -max material thickness: 40 mm Cjdpsd Izt Rsfx Adyeha -with: electronic feed device electronically adjustable -Dimensions box: 1170/780/H510 mm -Weight: 320 kg