Used Ostas Opk 42 for sale (4,411)

Condition: good (used), Year of construction: 1982, Gebr. Martin Thicknesser Type: T 42 Year of construction: 1982 planing width 630 mm planing height 250 mm Feed rate 8-20 m/min Suction nozzle 160 mm Weight approx. 870 kg Rubberized infeed and outfeed roller Two-knife shaft with strip planer knives Nwsdpfx Abet U Rn Sewsi Central lubrication Planing height via handwheel adjustment Star-delta switch Location: ex stock 54634 Bitburg: - immediately available -

Condition: excellent (used), Year of construction: 2005, functionality: fully functional, Original BIHLER width slide units for BIHLER MC 42 / RM 40 Nwedpeticggjfx Abwsi 2 pcs. Bihler-No. 174-04-0044.0 complete with central lubrication system 1 pce. Bihler-No. 142-04-0347.0 complete with central lubrication system 2 pcs. Bihler-No. 142-04-0229.0, complete with central lubrication system

Condition: excellent (used), Year of construction: 2002, functionality: fully functional, 4 pcs. LAFRANCONI width slide units for BIHLER MC 42 / RM 40 Nedpfx Abjmrnlbowswi

Condition: new, Heidenhain ERA 780C 84000 03S12-03 3.00 01 K02 angle measuring device, . 329088-42, serial number: 17445495A, unused, in original packaging, 100% functional, scope of delivery as shown in the photos. Nwedpei Eahisfx Abwji

Condition: used, maximum load weight: 23,580 kg, overall weight: 30,000 kg, axle configuration: > 3 axles, first registration: 11/2013, Year of construction: 2013, Equipment: ABS, Manufacturer HMK Bilcon Model 42 m3 Silo tank 6 Compartment Year 2013 Condition Very good Serial Number UH9FP4BXXD1HB1868 Ref. nr. 8157 Reg. date: Disc brake: ? ABS: ? Rear axles: BPW Suspension: Air Tire Size: 385/65R22,5 Njdjzml E Nspfx Abwowi Cover% left 30% Total weight: 30000 kg. Net weight: 6420 kg. Load capacity 23580 kg.

Condition: used, Year of construction: 1991, turning diameter 42 mm turning length 250 mm control total power requirement kW weight of the machine ca. t dimensions of the machine ca. m Nwedpfjt Hwz Aex Abwei CNC-lathe with bar feed with Sameca bar feed

Condition: used, Year of construction: 1998, operating hours: 10,118 h, lifting height: 3,250 mm, free lift: 1,360 mm, fuel type: gas, mast type: duplex, fork length: 1,200 mm, fork width: 1,100 mm, total height: 2,150 mm, total length: 2,600 mm, total width: 1,150 mm, color: blue, Empty weight: 4.301 kg Lifting capacity: 2.500 kg Njdpozkuhusfx Abwowi - Year: 1998 - Documentation available: Yes - └ Type Documentation: User manual - CE marking present: Yes - CE certificate present: No - Serial number: 406FGF25-21720 - Operating hours: 10118 - Lifting capacity: 2500kg - Lifting height: 3250mm - Overhead clearance: 2150mm - Free lift: 1360mm - Fork length: 1200mm - Maximum fork width: 1100mm - Minimum fork width: 410mm - Number of wheels: 4 Wheels - Attachment: Fork positioner, Side-shift - Options: Free-lift, Work lights, Full cabin - Mast: Duplex - Drive: LPG - Motor brand: Toyota - Transport dimensions: 2600mm x 1150mm x 2150mm (l x w x h) - Transport weight [kg]: 4301kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Tess van den Boom

Condition: good (used), Year of construction: 2001, Ref. -No.: 10551 Manufacturer: TRAUB Type: TNC 42/65 Year of construction: 2001 Type of control: CNC-Steuerung Control: TRAUB TX Storage location: Halberstadt Country of origin: Germany Machine-No.: 93XXXXX Turning Speeds: 8000 RPM X stroke: 450 mm Turning Length: 450 mm Spindle Speeds: 4000 RPM Clamping Diameter: 42 / 65 mm Spindle Diameter In Front Bearing: 110 mm Tool Taper: 14 Max. Torque: 170 / 230 Nm Rapid Travel Speed X-Axis: 15 m / min Rapid Travel Speed Y-Axis: 6 m / min Rapid Travel Speed Z-Axis: 30 m / min Dimensions Of The Machine (Lxwxh): 4354 x 2076 x 1917 m Chisel slide cross section turning and milling support: 16 x16 ( 20 x20 ) mm Pressure: 70 bar hydraulic tank: 70 L. Total Power Requirement: 39 kVA Weight Of The Machine Ca.: 5,2 t Feed force X-axis at 100% duty cycle: 5000 N Feed path X-axis: 140 mm Z-axis feed path: 450 mm Y-axis feed path: 35 mm Ball screw Z-axis (Ø x pitch): 32 x 10 mm Ball screw X-axis (Ø x pitch): 32 x 5 mm Ball screw Y-axis (Ø x pitch): 25 x 5 mm Further information: - Revolver 1 Number of branches 10 - Revolver 2 Number of branches 14 - Hecowpkfie Htlx Tfefh - Powered tools Yes The machine can be viewed under power by arrangement. Nwsdozkpvmjpfx Abwoi

Condition: used, Year of construction: 2006, operating hours: 6,744 h, lifting height: 4,000 mm, free lift: 1,120 mm, fuel type: diesel, mast type: triplex, fork length: 1,300 mm, fork width: 1,180 mm, total height: 2,000 mm, total length: 2,930 mm, total width: 1,350 mm, color: orange, Empty weight: 6.400 kg Lifting capacity: 4.000 kg - Year: 2006 - Documentation available: Yes - CE marking present: Yes - CE certificate present: No - Serial number: 10171 - Operating hours: 6744 - Lifting capacity: 4000kg - Lifting height: 4000mm - Overhead clearance: 2000mm - Free lift: 1120mm - Fork length: 1300mm - Maximum fork width: 1180mm - Minimum fork width: 200mm - Number of wheels: 4 Wheels - Attachment: 3rd+4th valve to fork carriage - Options: Work lights, Half cabin, Free-lift, Joystick - Mast: Triplex - Drive: Diesel - Motor brand: Toyota 14Z - Transport dimensions: 2930mm x 1350mm x 2000mm (l x w x h) - Transport weight [kg]: 6400kg - Transport packages [pcs.]: 1 Financial information Nwjdpfx Abezkkd Eowei VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Tess van den Boom

Condition: excellent (used), Memmert Type: CTC 256 Memmert Climate Test Chamber CTC 256 Temperature & Humidity Test Chamber Industrial Quality For sale is a high-quality climate test chamber / temperature test chamber from the manufacturer Memmert, model CTC 256. The unit originates from professional use and is ideally suited for laboratories, industry, research, development as well as quality assurance. The Memmert CTC 256 is designed for precise simulation of temperature and climatic conditions. It enables both cooling and heating processes and – in this configuration – humidity control. This makes the unit perfect for material testing, aging tests, climatic stress tests, and long-term experiments under defined environmental conditions. Thanks to the integrated control system, complex test programs with temperature and time sequences can be set. The forced air circulation system ensures uniform temperature distribution in the chamber interior. Via the available interfaces, measurement data can be documented and processed externally. Features: Temperature and climate test chamber (heating & cooling) Nwodpfx Absy D Ni Ajwoi - Humidity control Electronic controller with programmable function Forced air system for even temperature distribution Internal protocol memory USB and Ethernet interface Additional 230 V socket Feed-through (side) Water container system (humidification/condensate) Mobile on castors Technical Data: Manufacturer: Memmert Model: CTC 256 Device type: Climate test chamber Temperature range: approx. -42 °C to +190 °C Internal volume: approx. 256 liters Operating voltage: 3N~ 400 V / 50 Hz Current consumption: approx. 10.6 A Power consumption: approx. 7000 W Protection class: IP20 External dimensions (approx.): 898 x 1730 x 1100 mm (W x H x D) Internal dimensions (approx.): 640 x 670 x 597 mm (W x H x D) Weight: approx. 300–350 kg Condition: used Scope of delivery: (see photo) Memmert CTC 256 climate test chamber Removable shelves Water canister Documents Delivery as shown (Specifications and technical data are subject to change and error!) If you have any further questions, we would be happy to assist you by phone.

Condition: excellent (used), Weiss Model: WK3-340/40 Nodpfx Abeziyygjwowi Weiss Climate Test Chamber, Air-Cooled Temperature Testing Volume: 335 liters Test Chamber Dimensions: Internal Dimensions: Height 750 mm, Width 580 mm, Depth 765 mm External Dimensions: Height 1775 mm, Width 870 mm, Depth 1600 mm Minimum Temperature: –42°C Maximum Temperature: +180°C Temperature Change Rate, Cooling: 4 K/min Temperature Change Rate, Heating: 3.2 K/min Temperature Deviation Over Time: ± 0.1 to ± 0.5 K Temperature Uniformity Spatially: ± 0.5 to ±1.5 K Climate Testing: Temperature Range: +10°C to +95°C Dew Point Range: -3°C to +94°C Humidity Range: 10 to 98% RH Temperature Deviation Over Time: ± 0.1 to ± 0.3 K Temperature Uniformity Spatially: ± 0.5 to ± 1 K Humidity Deviation Over Time: ± 1 to ± 3 % RH Halogen Lamp: 2 x 24V, 50W Voltage: 3/N/PE AC 400V ±10% 50Hz Rated Power: 4.1 kW, Rated Current: 14 A Refrigerant: R-404A Weight: approx. 515 kg For your security as a buyer, please note the following information! The following steps are carried out on our offered chambers in advance: 1. Functional check and replacement of necessary components 2. If required, refilling with legally compliant refrigerant 3. Leak test with certificate 4. After successful inspection, the chambers are subjected to a documented test run. Condition: used Scope of delivery: (See picture) (Changes and errors in the technical data and specifications reserved!) Further questions can be answered by phone.

Condition: excellent (used), Here we offer a Vötsch climatic test chamber. Model: VC³ 4100, air-cooled With a temperature change rate of 3 K/min Test chamber internal dimensions: Height 950 mm x Width 1100 mm x Depth 950 mm Overall unit dimensions: Height 2000 mm x Width 1300 mm x Depth 1916 mm Chamber volume: 990 liters Port openings: Ø 125 mm, Ø 50 mm Nwedpfx Aeziypnebwoi Temperature test specifications: Temperature range: -42°C to +180°C Temporal temperature deviation: ± 0.1 to ± 0.5 K Spatial temperature uniformity: ± 0.5 to ± 1.5 K Temperature change rate: Heating: 4.0 K/min Cooling: 3.0 K/min Max. heat compensation at +20°C: 4500 watts Climatic test specifications: Temperature range: +10°C to +95°C Dew point range: -3°C to +94°C Humidity range: 10 to 98% r.h. Temporal temperature deviation: ± 0.1 to ± 0.3 K Spatial temperature uniformity: ± 0.5 to ± 1.0 K Temporal humidity deviation: ± 1% to ± 3% r.h. Max. heat compensation: 500 W Power supply: 3/N/PE AC 400V ±10% 50Hz Rated power: 11.5 kW Rated current: 22.0 A Refrigerant: R-404A Weight: approx. 840 kg Type: VC³ 4100 For your security as a buyer, please note the following information! The following points are checked and carried out on all our chambers prior to sale: 1. Functional inspection and replacement of necessary components 2. If needed, fresh filling with legally compliant refrigerant 3. Leak check with certificate 4. After a successful inspection, the chambers undergo a documented test run. Condition: used Scope of delivery: (See photo) (Subject to prior sale, changes and errors in technical data and specifications reserved!) We are happy to answer any further questions by phone.

Condition: excellent (used), We are offering a Weiss temperature test chamber for sale. Weiss Temperature Test Chamber with S!MCON / 32-controller, water-cooled Control Unit: "Touchpanel" All control and operation commands can be initiated by simply touching the function symbols on the "Touchpanel" control unit. Adjustable Feet The test chamber is equipped with adjustable feet to compensate for floor unevenness and to provide adequate ventilation for the machine section. Cable Ports Cable ports are installed on both the right and left sides of the test chamber. These allow measurement cables and test devices to be routed into the test space. Ports included as standard: - R1: NW 125 mm - L1: NW 50 mm (The refrigerant has been converted to R-452A) Test Chamber Volume: approx. 600 liters External dimensions with hinges and door lock: Height: 1995 mm, Width: 1090 mm, Depth: 1660 mm External dimensions without hinges and door lock: Height: 1995 mm, Width: 1000 mm, Depth: 1660 mm Internal dimensions: Height: 950 mm, Width: 800 mm, Depth: 800 mm Temperature Test Data: Temperature range: -42 to +180 °C Temporal temperature deviation at center of usable space: ± 0.1 to ± 0.5 K Spatial temperature deviation: ± 0.5 to ± 1.5 K Temperature change rate (according to IEC 60068-3-5): - Heating: 4.0 K/min - Cooling: 3.0 K/min Maximum thermal compensation: 2500 W Operating Data: - Test chamber lighting: Halogen bulb 2 x 24V, 50W - Rated voltage: 3/N/PE AC 400V ±10% 50Hz - Rated current: 15 A; Rated power: 7.8 kW - Fuse (on-site): 16 A slow-blow - Sound pressure level: approx. 58 dB(A) (measured 1 m in front, 1 m height) - Refrigerant: R-452A - Weight: 620 kg Type: WT3-600/40 Important information for your safety as a buyer! The following steps are carried out on our offered chambers in advance: 1. Function check and replacement of necessary components 2. Refill with legally compliant refrigerant, if necessary 3. Leak test with certificate 4. After successful inspection, the chambers undergo a documented test run. Condition: used Scope of delivery: (see photo) (Technical data subject to change and errors reserved!) We are happy to answer any further questions by phone. Nodpfx Abeziyb Rowowi

Condition: used, color: orange, Empty weight: 455 kg Njdezln S Aepfx Abwewi Working width: 100 cm Required tractor power: 65 hp

Condition: used, Year of construction: 2011, GVW: 60.000 kg Nodox R T Sbjpfx Abwswi Please contact Emal Jaweed for more information

Condition: used, Year of construction: 2005, operating hours: 30,000 h, functionality: fully functional, turning length: 200 mm, turning diameter: 42 mm, spindle bore: 43 mm, spindle speed (max.): 6,000 rpm, Turning length 280 mm Controller Siemens 2x revolver 2x spindle live tools for working on back spndle live tools on revolver 1 high pressure coolant system swarf coveyour Iemca bar feeder Machine has been running using cutting oil. Machine geometry and precision in like new condition. Machine is under power and ready for production. All books and manual available. Also big selection of collects for main spindle and sub spindle. Nwjdozlcpvepfx Abwsi

Year of construction: 1989, condition: used, - Type KM 42 Arrangement of planing rollers: bottom/top/saw roller Nsdpfsgqrtisx Abwjwi Working height: 800 mm Planing width: max. 420 mm Planing height: max. 250 mm Bore of the circular saw blade: 70 mm with 2 keyways, 20.5 x 4.25 mm Diameter of the planing spindle: 2 x 60 mm Adjustment of the working width: manual Adjustment of the working height: electric Feed speeds: 7-42 m/min, continuously adjustable Feed motor: 5.5 kW Number of driven rollers in the table: 3 Number of feed rollers on top: 6 Cables have been cut. Description: see original document, attached.

Condition: used, Year of construction: 2007, turning diameter 42 / 140 mm turning length 170 mm control Mitsubishi Meldas turning speeds 80-8.000 U/min c-axis 0,001° turret (x-stations) 2x 12 (VDI 20) angetrieben turning speeds 45-4.500 U/min spindle 1 kW gripping station 42 mm turning speeds 60-6.000 U/min c-axis 0,001° number of controlled axis 8 collet unit 48 DIN 6343 . Nwedsvyli Eepfx Abwei Number of working hours 10769 h chip conveyor ja/yes Bj. 2018 total power requirement 7,5 / 11 kW weight of the machine ca. 3,3 t dimensions of the machine ca. 2,4 x 1,6 x 2,2 m CNC turning and milling machine CITIZEN BOLEY BE 42, year 2007 Simultaneous working with 7 axes on main and pick-up spindle very good condition, operating hours 21.999h (September 2024) Accessories: # Various tool holders (see picture) 5x axiale driven tool holder # collet chuck for collets type 173E # additional coolant cooler # Knoll chip conveyor, year of construction 2018 The Boley BE 42 is without barloader. Loading magazine interface has been fitted. Complete battery exchange on 22.12.2025

Condition: good (used), Year of construction: 2001, functionality: fully functional, Technical details grinding length 4200 mm grinding width 1300 mm workpiece height 550 mm Control SIEMENS 840 D magnetic clamping plate 4200 x 1300 mm segment head diameter 1400 mm grinding motor turning speeds up to 320 U/min. grinding motor 306 kW weight of the machine ca. 50,0 t Additional information Segment dimensions: 120/106 x 41 x 250 mm Number of segments: 1 set = 26 pieces Grinding motor feed: 0.5 - 35 m/min, infinitely variable Grinding motor feed: - in steps: 0.002 - 1 mm continuous: up to 5 mm/min. infinitely variable Equipment: * CNC-control SIEMENS Sinumerik 840 D * Automatic hydr. swivelling of the grinding motor from hollow to cross grinding * NC-controlled adjustment of the Marposs measuring head by means of precision support. - new grinding dimensions can be entered into the control, whereby the the grinding head automatically adjusts to the corresponding height. * Dresser with adjustment axis in the machine bed * Coolant system * Electro-magnetic table * Switch cabinet * Oil mist extraction * Documentation Dimensions (length x width x height) Bed: 11800x2200x1400 mm, weight 27500 kg Grinding head: 3000 x 2500 x 3100 mm, estimated weight 14 t 2 x Oil mist extraction: 1200 x 800 x 2000 mm each Control panel: 1200 x 800 x 400 mm Small control cabinet: 1400 x 1400 x 800 mm 2 x gears each 1200 x 800 x 500 mm Njdpfxezill Us Abwjwi Control cabinet: 1600 x 800 x 2000 mm Control cabinet: 3400 x 600 x 2400 mm

Condition: used, Year of construction: 1998, OVERVIEW This ABC 4HA-4-LT high-pressure reciprocating air compressor, manufactured in 1998, is designed for the supply of compressed air in PET bottle blowing applications. The compressor is manufactured by ABC – Arizaga, Bastarrica y Cía S.A. from Eibar, Spain. The machine is a 4-stage reciprocating compressor with oil-free cylinder compression design and a nominal pressure of 42 bar. It is belt-driven. The compressor is mounted on a structural steel skid and includes interstage piping, pressure monitoring, cooling water connections, main drive motor, belt-drive safety guard and integrated control cabinet. The machine is equipped with an analog pressure gauge panel showing the final stage, intermediate stages and oil pressure. The control cabinet is fitted with status lamps for temperature, water, oil, thermal relay and dryer fault indications, as well as an hour meter and emergency stop.   TECHNICAL DATA Nedpjziawrjfx Abwewi - Manufacturer: ABC – Arizaga, Bastarrica y Cía S.A. - Manufacturer Location: Eibar, Spain - Model / Type: 4HA-4-LT - Machine Type: High-pressure reciprocating air compressor - Year of Manufacture: 1998 - Application: High-pressure compressed air supply for PET bottle blowing - Compression Design: Oil-free cylinder compression - Number of Compression Stages: 4 stages - Nominal Pressure: 42 bar - Regulation Air Pressure: 8 bar - Suction Pressure: Not specified - Flow Rate: approx. 546.9 m³/h - Compressor Speed: 725 rpm - Motor Power: 150 CV / 110 kW - Total Power to Install: 158 HP / 115 kW - Transmission: Belt-driven - Power Voltage: 380 V - Control Voltage: 220 V - Frequency: 50 Hz - Cylinder Diameter, 1st Stage: 250 mm - Cylinder Diameter, 2nd Stage: 160 mm - Cylinder Diameter, 3rd Stage: 105 mm - Cylinder Diameter, 4th Stage: 75 mm - Piston Stroke: 150 mm - Cooling System: Water-cooled - Cooling Water Flow Rate: approx. 6.5 m³/h - Ambient Temperature Range: 0 – 40°C - Cooling Water Temperature Range: 5 – 40°C - Compressor Weight: approx. 2,900 kg - Motor Weight: approx. 830 kg - Complete Equipment Weight: approx. 7,230 kg - Pressure Gauges Observed:Final stage: approx. 42 bar 3rd stage: approx. 16 bar 2nd stage: approx. 6 bar 1st stage: approx. 2 bar Oil pressure: approx. 3.5 bar - Control Cabinet: Integrated electrical control cabinet, marked T2/7 - Operator Elements: Status lamps, analog hour meter and emergency stop - Status Indications: Temperature, water, oil, thermal relay and dryer fault - Safety Equipment: Belt-drive / flywheel safety guard and emergency stop - Construction: Green painted multi-stage compressor on structural steel skid - Additional Equipment Observed: Interstage header pipework, vertical separator / receiver vessel and overhead piping - Certification: CE-marked - Condition: Used, installed in industrial production environment

Condition: used, Year of construction: 2008, operating hours: 11,507 h, lifting height: 4,040 mm, fuel type: diesel, mast type: duplex, fork length: 1,100 mm, fork width: 1,150 mm, total height: 2,690 mm, total length: 3,000 mm, total width: 1,450 mm, color: orange, Empty weight: 6.900 kg Lifting capacity: 4.000 kg - Year: 2008 - Documentation available: Yes Njdpjzh U Ucsfx Abwewi - └ Type Documentation: User manual - CE marking present: Yes - CE certificate present: No - Serial number: 30419 - Operating hours: 11507 - Lifting capacity: 4000kg - Lifting height: 4040mm - Overhead clearance: 2690mm - Fork length: 1100mm - Maximum fork width: 1150mm - Minimum fork width: 790mm - Number of wheels: 4 Wheels - Attachment: Side-shift - Options: Work lights, Half cabin - Mast: Duplex - Drive: Diesel - Motor brand: Toyota - Transport dimensions: 3000mm x 1450mm x 2690mm (l x w x h) - Transport weight [kg]: 6900kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Tess van den Boom

Condition: new, Knoll TG50-42/55480 centrifugal pump, 200523114, serial number: 268828, with AM 112M BA2 motor, serial number: 424615, unused, 100% functional. Scope of delivery as shown in the photos. ATTENTION: Please request separate quotes for packaging and shipping costs! Nedpfx Abszh Scqjwswi

Condition: new, Knoll TG50-42/55480 pump, serial number 200921578, SN: 413462, with AM 112M BA2 engine, serial number: 644637, used, in good condition, 100% functional. Scope of delivery as shown in the photos. PLEASE NOTE: Please request separate quotes for packaging and shipping costs! Nwodpfx Abjzh Scwswji

Condition: good (used), Year of construction: 2017, Traverses X Y Z: 1067mm x 610mm x 610mm, Table size 1270mm x 610mm, 600mm C axis Table (360 degrees) +/- 90-degree head (B axis), 37kW Spindle Motor, 40 station side arm ATC, din 40 spindle taper, 12,000rpm spindle, Hurco Winmax 5 control, Nodpfxszh Nczj Abwswi through spindle coolant, swarf conveyor, spindle probe.

Condition: used, Wide belt sander used Make:TimeSaver Series WRB Machine-No. 2480-19 Dry processing deburring/rounding machine machine with contact rollers and a rotating brush unit Max. Working width 1350 mm Sanding belt dimensions WxL 1350x1900 mm Outer brush diameter 530x350 mm Table opening 0.8-100 mm Min. part size 50x50 mm Brush speed 6-17 m/sec. Sanding belt speed 11 m/sec Feed speed 0.2-8 mm Power consumption W 1 unit - 11.0 kW RB unit 1.5 kW Brushes 4x1.5 kW Connection: 400 V 50 Hz Compressed air required 6 bar Total consumption 25 ltr/min. incl. ceramic brush set R plus 350x530 mm and zirconium brush set Nedpfx Ajudb R Iobwjwi grain 180 Machine has been completely overhauled New transport mat installed Area of application: Sanding belt rolling unit W: Pre-deburring with sanding belt or Scotch- Bride belt Removal of raised burrs Apply a sanding finish or brush finish, Repair a sanding finish or brush finish RB unit: Deburring and rounding of flat and profiled and profiled parts Weight: 6200 kg