Used Protec Welding Turntable,Turntable,Positioner for sale (7,833)

Condition: new, Year of construction: 2023, Three-phase powered positioner Table and arm rotation using hydraulic turntables Arm height adjustment using a hydraulic cylinder Control of functions on the positioner housing Useful for positioning components during: welding cleaning assembly Increases work efficiency by up to 40% The ability to rotate without limitations in 2 axes, and with additional vertical and horizontal movement, allows for any positioning of the clamped object (including upside down). The 3-axis positioner provides a significant improvement in working conditions compared to traditional rotary-tilting positioners (optimal object positioning, easy operation). Advantages and benefits: For the employer: Nwodpfx Aehzuwcjmysi Increased work efficiency by up to 40% through optimal object positioning - resulting in a short payback period for the device Increased production efficiency without requiring additional space in the production hall Improved quality of welded joints - always possible to weld in the downhand position The robust design of the device ensures long-lasting, trouble-free operation For the operator: Ensures an ergonomic working posture Minimizes the risk of accidents - no need to change the object clamping Eliminates work interruptions caused by waiting for a crane Easy assembly and operation Full automation of welding is possible by using Kawasaki welding robots. Our offer also includes positioners with a robot and an integrated control system. ADDITIONAL OPTIONS: REMOTE CONTROL WITH CABLE FOR POSITIONER OPERATION FOOT PEDAL WITH CABLE FOR TABLE ROTATION CONTROL SMOOTH ADJUSTMENT OF TABLE ROTATION SPEED AND ARM ROTATION SPEED CONSTANT TABLE ROTATION FUNCTION ARM LENGTH AND SHAPE TABLE SIZE AND SHAPE ROTATIONAL MASS We can manufacture a positioner according to individual customer specifications.

Year of construction: 2023, condition: new, Three-phase powered positioner Table and arm rotation using hydraulic turntables Arm height adjustment using a hydraulic cylinder Control of functions on the positioner housing Useful for positioning components during: welding cleaning assembly Increases work efficiency by up to 40% The ability to rotate without limitations in 2 axes, and with additional vertical and horizontal movement, allows for any positioning of the clamped object (including upside down). The 3-axis positioner provides a significant improvement in working conditions compared to traditional rotary-tilting positioners (optimal object positioning, easy operation). Advantages and benefits: For the employer: Increased work efficiency by up to 40% through optimal object positioning - resulting in a short payback period for the device Nsdpsiuna Eefx Amyewi Increased production efficiency without requiring additional space in the production hall Improved quality of welded joints - always possible to weld in the downhand position The robust design of the device ensures long-lasting, trouble-free operation For the operator: Ensures an ergonomic working posture Minimizes the risk of accidents - no need to change the object clamping Eliminates work interruptions caused by waiting for a crane Easy assembly and operation Full automation of welding is possible by using Kawasaki welding robots. Our offer also includes positioners with a robot and an integrated control system. ADDITIONAL OPTIONS: REMOTE CONTROL WITH CABLE FOR POSITIONER OPERATION FOOT PEDAL WITH CABLE FOR TABLE ROTATION CONTROL SMOOTH ADJUSTMENT OF TABLE ROTATION SPEED AND ARM ROTATION SPEED CONSTANT TABLE ROTATION FUNCTION ARM LENGTH AND SHAPE TABLE SIZE AND SHAPE ROTATIONAL MASS We can manufacture a positioner according to individual customer specifications.

Year of construction: 2023, condition: new, SPR type is the most popular and preferred line of our manipulators by customers. By moving the axis of rotation of the arm above the surface of the mounting plate, the weight of the support arm counterbalances the welding element. This technical solution gives a clear advantage over the PX and BE series. It allows for flexible positioning of the welded element (even "upside down"). Nwjdpfxonqzrpj Amysi STANDARD VERSION: Three-phase powered positioner Arm rotation using a hydraulic rotator Table rotation using an electric rotator Height adjustment of the arm using hydraulic cylinder Control of functions on the positioner case ADDITIONAL OPTIONS: Wired remote control Wireless remote control Pedal on the table rotation cable Smooth table rotation adjustment Rotation negative clamp (positioner case) Length and shape of the arm Possibility of individual configuration of the positioner Control of functions using a teach pendant

Year of construction: 2023, condition: new, Three-phase powered positioner Table and arm rotation using hydraulic turntables Arm height adjustment using a hydraulic cylinder Control of functions on the positioner housing Useful for positioning components during: welding cleaning assembly Increases work efficiency by up to 40% Nwodpfjgmiduex Amysi The ability to rotate without limitations in 2 axes, and with additional vertical and horizontal movement, allows for any positioning of the clamped object (including upside down). The 3-axis positioner provides a significant improvement in working conditions compared to traditional rotary-tilting positioners (optimal object positioning, easy operation). Advantages and benefits: For the employer: Increased work efficiency by up to 40% through optimal object positioning - resulting in a short payback period for the device Increased production efficiency without requiring additional space in the production hall Improved quality of welded joints - always possible to weld in the downhand position The robust design of the device ensures long-lasting, trouble-free operation For the operator: Ensures an ergonomic working posture Minimizes the risk of accidents - no need to change the object clamping Eliminates work interruptions caused by waiting for a crane Easy assembly and operation Full automation of welding is possible by using Kawasaki welding robots. Our offer also includes positioners with a robot and an integrated control system. ADDITIONAL OPTIONS: REMOTE CONTROL WITH CABLE FOR POSITIONER OPERATION FOOT PEDAL WITH CABLE FOR TABLE ROTATION CONTROL SMOOTH ADJUSTMENT OF TABLE ROTATION SPEED AND ARM ROTATION SPEED CONSTANT TABLE ROTATION FUNCTION ARM LENGTH AND SHAPE TABLE SIZE AND SHAPE ROTATIONAL MASS We can manufacture a positioner according to individual customer specifications.

Year of construction: 2023, condition: new, Three-phase powered positioner Table and arm rotation using hydraulic turntables Arm height adjustment using a hydraulic cylinder Control of functions on the positioner housing Useful for positioning components during: welding cleaning assembly Nsdpohtq Rbefx Amyowi Increases work efficiency by up to 40% The ability to rotate without limitations in 2 axes, and with additional vertical and horizontal movement, allows for any positioning of the clamped object (including upside down). The 3-axis positioner provides a significant improvement in working conditions compared to traditional rotary-tilting positioners (optimal object positioning, easy operation). Advantages and benefits: For the employer: Increased work efficiency by up to 40% through optimal object positioning - resulting in a short payback period for the device Increased production efficiency without requiring additional space in the production hall Improved quality of welded joints - always possible to weld in the downhand position The robust design of the device ensures long-lasting, trouble-free operation For the operator: Ensures an ergonomic working posture Minimizes the risk of accidents - no need to change the object clamping Eliminates work interruptions caused by waiting for a crane Easy assembly and operation Full automation of welding is possible by using Kawasaki welding robots. Our offer also includes positioners with a robot and an integrated control system. ADDITIONAL OPTIONS: REMOTE CONTROL WITH CABLE FOR POSITIONER OPERATION FOOT PEDAL WITH CABLE FOR TABLE ROTATION CONTROL SMOOTH ADJUSTMENT OF TABLE ROTATION SPEED AND ARM ROTATION SPEED CONSTANT TABLE ROTATION FUNCTION ARM LENGTH AND SHAPE TABLE SIZE AND SHAPE ROTATIONAL MASS We can manufacture a positioner according to individual customer specifications.

Year of construction: 1992, condition: good (used), Geuma welding roller set, welding positioner set type GRS-SPE in neat good working condition consisting of: 1 x driven Nwodpfx Aelzcibemyei 3 x guide wheels Specifications: - 7 kW - max capacity 31 tons - diameter idlers 550mm - width 2 wheels side by side 950mm - center of wheels from under frame 340mm - maximum adjustable width 2500mm

Year of construction: 2022, condition: new, Turntable Load: 1.000kg (1.200kg horizontal) with a center of gravity of 200mm from the faceplate Faceplate diameter: 800mm with 4 T-slots Faceplate speed: 0.05-1.5rtm Torque face plate: 1,800Nm Tilt angle: 0-135 ° Nwedsgn Ecrjpfx Amyoi Welding current transmission: 800A Operation: Two-pedal foot switch and button on the switch cabinet

Condition: new, Year of construction: 2023, Hydraulically adjustable tilting table Maximum load: 1,000 kg Turntable diameter: 850 mm Turntable speed: 0.05 - 1.0 RPM Length / Width: 1,800 mm / 1,450 mm Turntable height, horizontal: 800 mm - 1,275 mm Turntable height, vertical: 625 mm - 1,100 mm Control devices: 2-pedal foot switch / Rotate LEFT / RIGHT Nedjh T Dafspfx Amyswi Handheld remote control: Rotate LEFT / RIGHT / STOP, speed control (potentiometer) for stepless speed adjustment, buttons for tilting FORWARD / BACKWARD, buttons for raising UP / DOWN Operation on the control cabinet: Push button "MACHINE ON" Selector switch "HAND / FOOT OPERATION" Main switch "ON / OFF"

Year of construction: 2022, condition: new, Load capacity: 10,000 kg Speed: 0.03 - 1.6 rpm Nwedpfx Asfxgp Uemyei Diameter of the rotary table: 1,500 mm, expandable to 2,500 mm Welding current transmission: 800 A

Condition: new, Year of construction: 2023, Manipulator with hydraulic height adjustment, faceplate with clamping slots and manual remote control. Height (faceplate horizontal): approx. 670 - 2,400mm Swivel range of face plate: approx. +-360°. face plate dimensions: Ø1.200mm x 40mm, 6x clamping slots Rotational speed of main axis: approx. 2.0 rpm (other Torque main rotary axis: approx. 13.000 Nm Speed of face plate: approx. 0.2-2rpm Torque face plate: approx. 10.000 Nm Nsdpfx Aonqzt Ajmyjwi

Condition: good (used), Year of construction: 2002, machine/vehicle number: C3-0203, Offer 24508 Technical data: - Load capacity 100 kg - Faceplate diameter 500 mm - Through opening 155 mm Nwjdpfx Aevtn A Uomyji - Faceplate manually infinitely tiltable left + right - Rotation infinitely adjustable by motor - Right + left rotation - Electric foot switch for start - stop - Table height in horizontal position approx. 940 mm - 3 jaw chuck - Drive 220 V - Space requirement approx. W 750 x H 940 x D 750 mm - Weight approx. 100 kg

Condition: used, Year of construction: 2008, machine/vehicle number: 81266- V 80381, Lg.no. 24394 Hydr. rotary and tilting welding table - Four-axis welding manipulator Technical data: - max. load capacity 15000 kg - Face plate dimensions 2990 x 2990 mm - min. Table height in horizontal position approx. 1070 mm - Face plate can be rotated + swiveled or tilted - Faceplate can be moved horizontally + vertically, travel 1250 mm - Rotation electr. infinitely variable - Right + left rotation - Welding current transmission approx. 700 A - Drive 400 V Nwedsugtiujpfx Amyoi - Connected load 33.0 kW - Manual remote control for speed regulation - E. foot switch - Space requirement approx. W 2990 x H 1070 x D 5500 mm - Weight approx. 12500 kg

Condition: good (used), Year of construction: 1975, machine/vehicle number: D 201238, Offer 17230 Technical data: - Load capacity 3600 kg - Faceplate diameter approx. 1050 x 1050 mm Nodpjv Hbzksfx Amyswi - Faceplate motorized, swiveling + rotating - Faceplate speed electrically infinitely adjustable 0.2 - 1 rpm - Motorized right + left rotation - Hand remote control - Welding current transmission 600 A - Drive 400 V - Table height in horizontal position approx. 1450 mm - Space requirement approx. W 1650 x H 1550 x D 2400 mm - Weight approx. 3500 kg - Hand remote control

Condition: good (used), Year of construction: 2017, machine/vehicle number: KA 061957-01, Offer 25347 Hydraulic Manipulator – Positioning – Welding Rotating and Tilting Table Technical Data: - Max. load capacity incl. work table: 4000 kg - Faceplate hydraulically tiltable: 0 – 180° - Hydraulic height adjustment of faceplate - Faceplate with holes D 28 + threaded holes, Ø 1600 mm - Table operates in the last set tilt position or horizontal - Rotational movement electrically hydraulic with clockwise & counterclockwise rotation - Min. / max. rotational speed: 0.1 – 1.4 rpm - Min. / max. table height in horizontal position: approx. 1040 / 2140 mm Nwsdpexufhgjfx Amysi - Welding current transfer: approx. 600 A - Drive: 400 V - Hand remote control + electrical foot switch - Space requirement: approx. W 2000 x H 1100 x D 3200 mm - Weight: approx. 5700 kg

Condition: used, Year of construction: 1993, machine/vehicle number: 2410, Order No. 25075 Technical Specifications: - Load capacity 1000 kg - Faceplate diameter 800 mm - Motorized tilting faceplate - Continuously adjustable electrical rotation 0 - 250 cm/min - Welding current transmission 650 A Njdpfx Amowi H D Ieyewi - Drive 400 V / 2.8 kW - Table height in horizontal position approx. 1100 mm - Right and left rotation - Space requirement approx. W 1200 x H 1100 x D 1500 mm - Weight approx. 850 kg

Condition: good (used), Year of construction: 1986, machine/vehicle number: 205891, Offer 25396 Technical Specifications: - Load capacity: 250 kg - Faceplate diameter: 600 mm - Table height in horizontal position: 910 mm - Faceplate continuously tiltable by hand crank Nwedpsx Tqblofx Amyji - Faceplate rotational speed electrically variable: 0.2 – 2 rpm - Welding current transmission: 300 A - Drive: 220 V - Right and left rotation - Electric foot switch - Space requirement: approx. W 800 x H 910 x D 1,200 mm - Weight: approx. 150 kg

Condition: used, Year of construction: 2000, Lg.no. 24489 Technical data: Nedpfsu Uqbkex Amyjwi - Load capacity ( vertical ) 100 kg - Flat plate diameter 400 mm - Passage opening 60 mm - Face plate manually steplessly tiltable 0 - 135 ° - Rotation infinitely variable motorized 0.05 - 5 m/min - E. foot switch for start - stop - Table height in horizontal position without rollers approx. 750 mm - 3 jaw chucks - Drive 220 V - Space requirement approx. W 450 x H 850 x D 650 mm - Weight approx. 60 kg

Year of construction: 1979, condition: ready for operation (used), Max. nominal load: 6t, face plate diameter: 1440mm, number of clamping grooves: 4, length: 3650mm, width: 1850mm, height: 700mm, weight: 5t, with documentation. Njdpfxelyrz Do Amyowi

Year of construction: 1989, condition: good (used), For sale is a fully functional welding positioner from APS. Model 1000 E Year of manufacture: 1989 Machine number: H1-008 Speed range: 0.3-1 rpm 64mm hollow shaft Nodpfxecl Ttvs Amyewi Tilts left and right approximately 135° Space requirement: approximately 1700x1700mm Weight: 750kg

Condition: new, Year of construction: 2026, The PS-650 swivel by CORMAK is a versatile auxiliary device that is used in various production tasks. Its wide range of capabilities makes it suitable for use wherever workpieces need to be manipulated. The welding, painting and mechanical industries have come to appreciate the quality and rotary capabilities of our positioners. CORMAK positioners are the ideal solution wherever components or subassemblies need to be rotated, wound or coiled. The main features, functions and advantages of the welding positioner are: Functions: 1. Rotation direction switch: Allows control of the direction of rotation of the turntable disc. 2. Rotation direction switch: Allows the direction of rotation of the disc to be changed. 3. Infinitely adjustable disc speed: With this function, the disc speed can be adjusted to suit the specific job. 4. Compact, compact design: Robust construction ensures the durability and robustness of the machine. 5 Control pedal: Facilitates control of the positioner's operation. 6. thermal fuse: Provides additional safety during operation. 7. Brush motor: A brush motor is a type of DC electric motor that can be effective in a variety of applications. 8. Disc tilt range 0 - 90°: The ability to tilt the turntable disc from 0 to 90 degrees is useful for welding in different positions. 9. Centring bracket mounting capability: Allows additional centring of workpieces. Advantages: 1. higher productivity: The positioner helps increase productivity in assembly and welding processes. 2. Reduced production costs: Automating or facilitating the rotation of parts can help reduce production costs. 3. Repeatability of completed joints: The device helps to maintain consistency and quality of joints. 4. Flexibility in use: The ability to adjust the speed and direction of rotation makes the device flexible to adapt to different tasks. 5. Improved working conditions for the welder: Allows the welder to work more comfortably and in more comfortable positions when welding. Machine characteristics: direction of rotation switch direction of rotation switch has limit switches high torque durable brass bush guaranteeing 100% weight transfer to the material to be welded Infinitely adjustable disc speed compact design control pedal remote control on cable thermal fuse Stable speed regulation Disk inclination range 0 - 90°, possibility to mount the self-centring holder Technical data: Power supply 400 [V]. Motor power 300 [W]. Horizontal load capacity 400 [kg]. Vertical load capacity 200 [kg]. Table diameter 650 [mm]. Workpiece diameter 693 [mm] Screed inclination range 0° ~ +90° Speed control range 0.2 -1.8 [rpm] Continuous speed control Continuous rotation adjustment Overall length 850 [mm] Overall width 700 [mm] Overall height 680 [mm] Weight 122 [kg]. Njdpfjuc Tdqjx Amyjwi CORMAK's PS-650 positioner is a valuable tool in an industry that requires the rotation and positioning of workpieces, especially during welding processes. It helps to increase productivity, reduce costs and improve the quality of work. *three-jaw chuck not included in the kit

Condition: new, Year of construction: 2026, The main features, functions and advantages of the welding positioner are: Functions: Nsdpfxorigmgj Amyswi 1. Direction of rotation switch: Allows you to control the direction of rotation of the rotator disc. 2. Direction of rotation switch: Allows you to change the direction of rotation of the disc. 3. Smooth regulation of the plate rotation speed: Thanks to this function, you can adjust the rotation speed of the plate to a specific job. 4. Compact, compact design: The solid construction ensures the durability and strength of the device. 5. Control pedal: Makes it easier to control the operation of the positioner. 6. Thermal fuse: Provides additional safety during operation of the device. 7. Brush motor: A brush motor is a type of DC electric motor that can be effective in various applications. 8. Plate tilt range 0 - 90°: The ability to tilt the rotator disc from 0 to 90 degrees is useful for welding in different positions. 9. Possibility of mounting a centering holder: Allows additional centering of elements. Advantages: 1. Higher work efficiency: The positioner helps increase efficiency in assembly and welding processes. 2. Reduction of production costs: Automation or facilitation of rotation of elements can contribute to lower production costs. 3. Repeatability of made joints: The device helps to maintain the consistency and quality of joints. 4. Flexibility in use: The ability to adjust the speed and direction of rotation makes the device flexible in adapting to various tasks. 5. Improved working conditions for the welder: Allows the welder to work more comfortably and in comfortable positions during welding. The set includes: 1. PS-500 positioner device. 2. Control pedal. 3. Power cable. 4. Operating instructions. 5. Mast with welding torch. The PS-500 positioner from CORMAK is a valuable tool in the industry that requires rotation and positioning of elements, especially during welding processes. It helps to increase efficiency, reduce costs and improve the quality of work. Technical parameters: Maximum load 300kg Worktable size φ500mm Tilt angle 0° ~ + 90° Rotation speed 0.2 ~ 2.5 rpm Rotation power 200W Tilting speed manual Voltage 220V-1PH-50HZ Weight support Dimensions 700x650x710 Weight 97kg *three-jaw chuck is not included

Condition: new, Year of construction: 2026, Functions: 1. Direction of rotation switch: This switch allows the operator to control the direction of rotation of the rotator disc, which is important during precision welding work. 2. Direction of rotation switch: Thanks to this tool, the operator can easily change the direction of rotation of the disc, which allows the device to be flexibly adapted to various tasks. 3. Smooth regulation of the disc rotation speed: Adjusting the disc rotation speed allows you to adapt the device to various materials and welding processes, which increases the precision and quality of work. 4. Compact, compact design: The compact design of the device saves space in the workshop and makes it easy to move the device to different work stations. 5. Control pedal: The control pedal allows the operator to precisely control the operation of the rotator, which is important when welding and assembling elements. 6. Thermal fuse: The presence of a thermal fuse protects the device from overheating, which increases operational safety and durability of the machine. 7. Brush motor: The brush motor ensures stable and effective operation of the device, which is important in welding applications. 8. Disc inclination range 0 - 90°: The ability to tilt the disc in the range from 0 to 90 degrees allows you to work in the optimal position, which translates into the quality of welds and the operator's comfort. 9. Possibility of installing a centering holder: This enables accurate and stable mounting of elements, which is important for precise assembly and welding work. Advantages: 1. Higher work efficiency: Thanks to the ability to rotate cylindrical elements, assembly and welding work becomes more effective. 2. Reducing production costs: Increasing the precision and quality of work can help reduce reject costs and improve production efficiency. 3. Repeatability of the joints made: The device ensures constant quality of welds and joints, which is important in industries that require repeatability. 4. Flexibility in use: The ability to adjust the speed, direction of rotation and inclination of the disc makes the tool flexible and adaptable to various tasks. 5. Improves the welder's working conditions: It facilitates the welder's work, enabling welding in the optimal position, which affects the comfort and safety of work. Set contains: 1. PS-310 positioner device. 2. Control pedal. 3. Power cable. 4. User manual. 5. Mast with welding fixture. This kit contains the necessary elements to start working with the device and allows you to use its full capabilities in terms of assembly and welding. Technical parameters: Maximum load 30kg Worktable size φ310mm Tilt angle 0° ~ + 90° Rotation speed 1-15 rpm Rotational power Nwjdpforigk Nsx Amyji 120W Manual tilt speed Voltage 220V-1PH-50HZ Weapon support Dimensions 500x500x440 mm Weight 34 kg *three-jaw chuck is not included in the set

Condition: new, Year of construction: 2026, Here are the main features, functions and benefits of the welding positioner: Characteristics: 1. Versatility: The PS-360 positioner is a versatile auxiliary tool that can be used in various types of assembly and welding works. 2. Automated processes: The machine can be used in partially automated production processes, which contributes to increased work efficiency. 3. Welding in the optimal position: The device allows welding of cylindrical elements in the optimal position, which translates into safe, fast and accurate welding. 4. Solid construction: The solid construction of the machine ensures its durability and strength, which increases the quality of the work performed. 5. Tilt adjustment: The rotator disc can be tilted from 0 to 90 degrees, giving you the flexibility to adapt it to a specific job. 6. Regulation of rotational speed: The possibility of smooth regulation of the rotational speed of the turntable allows it to be adapted to a specific application. 7. Pedal control: The device is equipped with a pedal that allows the welder to control the positioner's operation. Nwsderigl Uspfx Amyoi Advantages: 1. Increased work efficiency: Thanks to the ability to rotate cylindrical elements in the optimal position, welding works become more effective. 2. Reduce production costs: Automated or facilitated part rotation can reduce production time and costs. 3. Repeatability of work: The device helps maintain the repeatability of the joints made, which is important in production. 4. Flexibility: The positioner is flexible in use and can be adapted to various tasks. 5. Improved working conditions: Allows the welder to work more comfortably and ergonomically, which translates into improved working conditions. Set contains: 1. PS-360 positioner device. 2. Control pedal. 3. Power cable. 4. User manual. 5. Mast with welding fixture. The CORMAK PS-360 positioner is a useful tool in industries that require rotation and positioning of elements in assembly and welding processes. This helps increase efficiency, reduce costs and improve the quality of work performed. Technical parameters: Rated load 100kg Worktable size φ360 mm Tilt angle 0°～＋90° Rotation speed 0.2 ~ 5 rpm Rotational power 120W Manual tilt Voltage 220V-1PH-50HZ Weapon support Dimensions 530x550x500 mm Weight 49 kg *three-jaw chuck is not included in the set

Condition: good (used), Welding curtain, welding protection wall, sliding curtain, welder's curtain, strip curtain Nedpfxev Ullco Amyowi -Welding protection wall: Welder's protection wall -Length: 3145 mm -Number: 2x protective walls available -Price: per piece -Dimensions: 3145/600/H2120 mm -Weight: 120 kg/unit

Year of construction: 1990, condition: used, machine/vehicle number: xxxx; Lg-Nr. 17250, Technical specifications: - Load capacity approx. 200 kg - Outreach 800 mm - Working height in horizontal position approx. 1000 mm - Boom arm can be rotated to the left and right by motor - Boom arm can be tilted manually - Grinding wheel can be rotated to the left and right by motor - Grinding wheel speed can be adjusted continuously Nodpfxedd Ilxo Amyswi - Grinding wheel diameter 300 mm - Swiveling control panel with ESAB control unit, - Type 6 PTF, year of manufacture 1997 - Space required approx. W 1100 x H 1300 x D 1600 mm - Weight approx. 300 kg