Used Punching/Shearing Machine for sale (65,709)

Condition: good (used), Year of construction: 1992, machine/vehicle number: 576892, Offer 25455 Hydraulic Flat Profile and Bar Steel Shear with Notching Device and Punching Station Technical Specifications: - Flat Bar Shear: cuts up to 300 x 15 mm - Profile Steel Shear: cuts L-profile steel at 90° up to 120 x 12 mm - Bar Steel Shear: - cuts round steel up to 40 mm - cuts square steel up to 35 mm - Notching Device: with square notching unit 100 x 42 x 10 mm Iedpfxjx S Ib Hj Aaxetk - Punching Station: - punching force: 600 kN - with stop table - throat depth: 220 mm - punches in steel up to 28 mm Ø in 15 mm or 38 mm Ø in 11 mm - various punch and die sets included - Drive: 400 V / 4 kW - Space requirements: approx. W 600 x H 1550 x D 1500 mm - Weight: approx. 1300 kg

Condition: good (used), Year of construction: 1991, machine/vehicle number: 0168091277886, Offer 23294 Itjdpfxorll I Us Aaxok Hydr. combined flat and profile steel shears with notching device and hole punch Technical data: - Flat steel shears - blade length 470 mm - for flat material 450 x 15 mm - or 300 x 20 mm - Profile steel shears - L-steel at 90° 140 x 13 mm - at 45° 70 x 7 mm - T-steel at 90° 70 mm - Steel bar shears - round steel 50 mm - Square steel 42 mm - Notching device - rectangular notching 52 x 90 x 12 mm - Hole punch - Punching force approx. 750 KN - Infinitely variable stroke 0 - 70 mm - punches holes in steel up to 30 mm Ø in 20 mm - throat 310 mm - Hydraulic drive 400 V / 7.5 kW - Space requirement approx. W 1600 x H 1850 x D 1400 mm - Weight approx. 2400 kg - with: - 2 E. foot pedals for two separate work stations - Turntable

Condition: refurbished (used), Year of construction: 1995, functionality: fully functional, machine/vehicle number: 131 720, total height: 4,120 mm, ram adjustment: 150 mm, installation height: 550 mm, table height: 1,000 mm, total width: 2,600 mm, total length: 3,600 mm, drop-through hole in table: 1,200 mm, table length: 3,000 mm, table width: 1,250 mm, pressing force: 250 t, control cabinet height: 2,200 mm, control cabinet length: 3,600 mm, control cabinet width: 600 mm, type of input current: three-phase, stroke length: 160 mm, stroke adjustment: 20 mm, input voltage: 400 V, distance between side stands: 650 mm, distance between stands: 1,600 mm, overall weight: 35,000 kg, control voltage: 24 V, input frequency: 50 Hz, ATTENTION: The machine is currently partially disassembled. The control panel and switch cabinet have been scrapped. Components can be inspected. Itsdpfxezrxbuj Aaxok Before delivery in 2026/2027, the machine will undergo a complete mechanical and electrical overhaul. Pressing force: 2500 kN Adjustable stroke: 40 - 180 mm Ram adjustment: 150 mm Stroke rate: 20 - 150/min Working height: 550 mm Table dimensions: 2000 x 1250 mm Ram dimensions: 2000 x 1000 mm The machine is currently not operational.

Condition: ready for operation (used), Year of construction: 2004, functionality: fully functional, machine/vehicle number: 150 350, total height: 4,600 mm, ram adjustment: 150 mm, installation height: 550 mm, table height: 1,000 mm, total width: 3,000 mm, total length: 4,200 mm, drop-through hole in table: 1,400 mm, table length: 3,000 mm, table width: 1,250 mm, pressing force: 250 t, control cabinet height: 2,000 mm, control cabinet length: 6,800 mm, control cabinet width: 600 mm, type of input current: three-phase, stroke length: 180 mm, stroke adjustment: 20 mm, input voltage: 400 V, distance between side stands: 810 mm, distance between stands: 2,020 mm, overall weight: 45,000 kg, control voltage: 24 V, year of last overhaul: 2026, input frequency: 50 Hz, ATTENTION: The machine will be completely cleaned before delivery. Fairings will be repaired if possible and deemed appropriate. Pressing force: 2500 kN Adjustable stroke: 40 - 180 mm Ram adjustment: 150 mm Stroke rate: 20 - 150/min Installation height for tool: 550 mm Table dimensions: 2000 x 1250 mm Ram dimensions: 2000 x 1000 mm Iedpfx Aezrwzaeaxstk New control system: SIEMENS S7 300, 1st generation, control system designed according to VW specifications. Upon request, the machine can also be completely overhauled by ANDRITZ Kaiser, with a new S7 1500 control system.

Condition: ready for operation (used), Year of construction: 2003, functionality: fully functional, machine/vehicle number: 150 302, total height: 4,600 mm, ram adjustment: 150 mm, installation height: 550 mm, table height: 1,000 mm, total width: 3,000 mm, total length: 4,200 mm, drop-through hole in table: 1,400 mm, table length: 3,000 mm, table width: 1,250 mm, pressing force: 250 t, control cabinet height: 2,000 mm, control cabinet length: 6,800 mm, control cabinet width: 600 mm, type of input current: three-phase, stroke length: 180 mm, stroke adjustment: 20 mm, input voltage: 400 V, distance between side stands: 810 mm, distance between stands: 2,020 mm, overall weight: 45,000 kg, control voltage: 24 V, year of last overhaul: 2026, input frequency: 50 Hz, ATTENTION: The machine will be completely cleaned before delivery. Fairings will be repaired if possible and deemed appropriate. Pressing force: 2500 kN Adjustable stroke: 40 - 180 mm Ram adjustment: 150 mm Stroke rate: 20 - 150/min Installation height for tool: 550 mm Table dimensions: 2000 x 1250 mm Ram dimensions: 2000 x 1000 mm New control system: SIEMENS S7 300, 1st generation, control system designed according to VW specifications. Itjdpfx Aozrwypeaxok Upon request, the machine can also be completely overhauled by ANDRITZ Kaiser, with a new S7 1500 control system.

Condition: excellent (used), functionality: fully functional, overall weight: 400 kg, We sell directly. Make-Ready Table for Bobst 106 E/ER We offer a professional table for the pre-preparation and alignment of die-cutting tools, as well as a cleaning section located outside the die-cutting machine. This device reduces the machine setup time (make-ready) of the Bobst machine by up to 30-40%. Technical data and specifications: Compatibility: BOBST 106 E /ER (SP / Novacut / Visioncut / SPeria series) Working format: Max. sheet format 1060 x 760 mm. Basing system: Fully compatible with the Centerline II system (fast and precise tool centering) Construction: Stable, steel frame with an ergonomic work surface and shelves for accessories/frames Included equipment: Basing strips and millimeter scales Clamping system Additional elements - additional frames (without the tools visible in the pictures, i.e., pins and telescopes) Technical condition: Condition: Excellent, 100% technically sound, locking mechanisms operate smoothly. Location of the device: Dąbrówka / Poznań, Poland Itjdszuwazepfx Aaxsk Logistics and delivery Delivery terms: EXW (self-collection by the Buyer) / Possibility of arranging transport at the Buyer's expense. Availability: Immediate (the table is secured and ready for loading).

Year of construction: 2000, condition: good (used), Technical Specification Punching/Shearing system Material * flatsteel length : 6.000 mm width : 50-500 mm thicknes : 5-30 mm * angle steel length : 12.000 mm width : 50 x 50 — 150 150 mm thickness : max. 15 mm Punching Machine VPO 1400 Capacity : 1400 kN (140T) Punch diameter/material thickness (max): 32 mm/25 mm Punching in flat- and angle steel : yes Number of punches for flat steel : 4 Number of punches for angle steel : 1 Hydraulic clamping : yes Centring points : yes Mist lubrication system : yes Isdpfx Aaeq Hu H Roxjtk Shear for Flat Steel VPS 1800 Capacity : 1800 kN (180 ton) Width/material thickness (max) : 500 mm/22 mm Hydraulic clamping : yes Mitreshearing : +/- 45° Shear for Angle Steel VHS 1800 Capacity : 1800 kN (180 ton) Suitable for Angle : 50x50x5 up to and included 150x150x15 Hydraulic clamping : yes Punching Unit for Angle Flange Capacity : 600 kN (60 ton) Punchdiameter/material thicknes (max.) : 32 mm / 15 mm Numbering Unit Number of disks : 4 pcs Number of characters : 36 pcs Character hight : 10 mm Number of characters per code : standard max. 16 Inprint : approx 1 mm Electrical power : 3 x 415V AC + N + PE, 50 CPS

Condition: used, Year of construction: 1994, Product information "Boschert Hydraulic CNC Punching Machine" Type / Model: Boschert EL 750 digital Condition: Used Year of manufacture: 1994 Technical data Working area & dimensions Overhang (Y-axis): 750 mm Travel range (X-axis): 1500 mm Max. sheet size (without repositioning): 720 x 1700 mm Performance data & capacity Max. hydraulic punching force: Standard 280 kN Max. sheet thickness*: up to 12.7 mm Max. punching diameter: Ø 105 mm Stroke rate: max. 100 strokes/min Tooling: Original Trumpf® tool system Positioning accuracy with 2-axis digital display: ± 0.1 mm Connection power: 4 kVA Control voltage: 220 V Required fuse rating: 3 x 16 A Installation dimensions (W x D x H): approx. 3400 mm x 1580 mm x 1600 mm Isdpfx Aaozp Raqjxotk Weight: approx. 3400 kg Equipment - includes various tools / accessories * Material-dependent, usually designed for thin sheet metal up to 6 mm at full diameter or any shape that fits into a circle of Ø 105 mm Inquiry item: Transportation costs in individual offer.

Condition: good (used), functionality: fully functional, Amada LC 2012 C1 NT / Punch-Laser Machine, Year of manufacture 2012, Iodpfxjzp D H De Aaxjtk Control system: AMNG - Fanuc Series, Punching force: 200 kN, Punching area: 2,500 x 1,270 mm, Laser power: 2,500 W, Laser cutting area: 2,000 x 1,270 mm, Z-axis travel: 100 mm, Max. table load: 150 kg, Revolver turret: 46 stations.

Condition: good (used), Profile steel shears, profile shears, punch, punching machine, hole punch, hydraulic flat/profile and bar steel shears, punching and notching machine Iodpfxotxkn Ue Aaxotk -Manufacturer: Mubea, profile steel shear punching and notching machine type HIW 600 -Pressure force: 60 to -Applications: punching, shearing, cutting, notching -Punching: Throat depth 260 mm -Accessories: incl. punching tool, see photos -Dimensions: 1470/960/H2140mm -Weight: 1283 kg

Condition: used, Section steel shears, profile shears, punch, punching machine, hole punch Itodpfsf Ek H Ujx Aaxek -Pressure force: 29 to -Punching: -Scissors: -to cut: -not: -mechanical release: -div. Punches and dies: -Length stop: -Installation dimensions: 1300/1570/H1900 mm -Transport dimensions: 1300/770/H1900 mm -Weight: 1112 kg

Condition: good (used), Profile steel shear, profile shear, punch, punching machine, hole punch Itjdecc Ubujpfx Aaxek -Pressure force: 40 tons -Punching -scissors -cut -disengage -mechanical release -Foot switch: 1 -various stamps and dies -Dimensions: 800/1250/H1800 mm -Weight: 1112 kg

Condition: refurbished (used), Year of construction: 2020, functionality: fully functional, machine/vehicle number: 150 583, total height: 3,975 mm, ram adjustment: 125 mm, installation height: 410 mm, table height: 1,220 mm, total width: 2,725 mm, total length: 3,510 mm, table length: 1,500 mm, table width: 1,200 mm, pressing force: 200 t, control cabinet height: 2,200 mm, control cabinet length: 340 mm, control cabinet width: 600 mm, type of input current: three-phase, clearance between the columns: 900 mm, distance between side stands: 900 mm, distance between stands: 1,520 mm, overall weight: 3,700 kg, year of last overhaul: 2025, ATTENTION: Itsdpfow H Arvjx Aaxjk The machine sustained transport damage. The machine is currently disassembled. Components can be inspected. The machine will be completely mechanically and electrically overhauled/repaired before delivery in 2026/2027. Pressing force: 2000 kN Adjustable stroke: 20 - 160 mm Ram adjustment: 125 mm Stroke rate: 30 - 180/min Center height: 410 mm Table dimensions: 1500 x 1200 mm (The press will be delivered with a new table top; T-slot design can be freely selected) Ram size: 1500 x 1000 mm Control system: SIEMENS S7 1500 series, PC 477E, year of manufacture 2020.

Condition: used, Year of construction: 2007, Control system, manufacturer: Boschert; quick-change tool system, manufacturer: Trumpf; punching force: 3 x 280 kN; Station 1: Trumpf system tool, size 3 (105 mm) with spray device; Station 2: Trumpf system tool, size 3 (105 mm), free-rotating and indexable; Station 3: Trumpf system tool/Boschert Revotool, size 3 (105 mm), including Revotool 8-position tool holder; travel distances: X – 3,000 mm (adjustable up to 9,999 mm), Y – 1,580 mm; punching arm overhang: 1,730 mm; sheet metal thickness max.: 6 mm (clamp opening); stroke height max.: 90 mm, programmable in infinitely variable steps upwards and downwards; punching slug extraction; ball bearings in the machine table; table width left + right: 3,200 mm each; table depth: 2,810 mm; table height: 900 mm; overall width: 6,482 mm; overall depth: 4,600 mm; overall height: 2,110 mm; with workshop trolley, manufacturer: KS Tools, 7 drawers, contents: various hand tools. +++ ATTENTION: This machine is part of an online auction! +++ Iodpfx Aaezkah Texotk

Condition: excellent (used), Year of construction: 2013, operating hours: 55,200 h, functionality: fully functional, machine/vehicle number: A0035A0294, Machine type: TruPunch 3000-1300 (S11) TruPunch 3000-1300 (S11), medium format 1250/2500 We are the first and only owner of the machine. Machine with complete history and service documentation. Machine is in fully working order and in continuous operation. Technical data: Width 6500 mm Depth 6203 mm Height 2252 mm Max. punching sequence (E = 1 mm) 1000 1/min Max. punching sequence – marking 2500 1/min Punching mode, X-axis 2500 mm Punching mode, Y-axis 1250 mm Itjdpfx Aaezd U D Noxok Max. sheet thickness 6.4 mm Max. workpiece weight 160 kg Max. punching force 180 kN Multitool tool change time 0.3 sec Number of tools/sheet clamps | 18 pcs / 2 pcs Max. part size, part flap when punching 500 mm x 500 mm Max. part size, rigid slide for punching (with sliding table) 80 mm x 50 mm Average power consumption with active automatic shutdown 0.3 kW Average power consumption during production 5.6 kW Additional, non-standard machine equipment: 1) Thread forming function with thread counter and thread forming tool damage control: chip-free thread forming is possible in both structural steel and stainless steel and aluminum. The threading tool is mounted like all other tools in the head. Thread size to be machined ranges from M 2.5 to M10. A thread sensor enables control of the threading tool damage. User-friendly operation, including lubricant level control. 2) Marking/surface embossing function: fast marking using appropriate tools. High-quality knurling can be performed at high speed. 3) Lowerable die: the lowerable die enables scratch-free processing because it moves downward when positioning the sheet metal. 4) Additional clamping device: recommended for processing very thin sheets and when using roller tool machining technology. An additional 2 clamping devices can be installed. In combination with the SheetMaster Compact, a third clamping device is recommended. 5) 3 x Option - vertically movable clamping device: the clamping devices move vertically (maximum stroke 12 mm); enables direct processing of the sheet metal at the clamping devices. This option reduces scratches from high forming dies. 6) Sensor in the slide for small parts: control of the slide for small parts (included in the "Nibbling-free machining" option). 7) Second locating pin: the pin is located on the outside on the right side. 8) RTC tool cassettes: 17 tool cassettes with die plates, enabling quick machine retooling. 9) Brush table with unloading and loading assistance: a brush table is recommended for processing particularly delicate materials. Vertically moving balls embedded in the table facilitate the loading and unloading process. We invite you to contact us.

Condition: excellent (used), Year of construction: 1989, functionality: fully functional, pressing force: 30 t, We offer this very good Bihler GRM 80 punching and bending machine, year of construction 1989. with 5 slides, 30T press, straightener, feeder with decoiler Tooling is not included Itedpjywty Esfx Aaxok If you have any questions or need more information, feel free to send us a message or give us a call.

Year of construction: 2011, condition: ready for operation (used), A Trumpf CNC punching machine is offered. Max. punching force: 180kN, working range X/Y: 2500mm/1250mm, max. sheet thickness: 6.4mm, max. workpiece weight: 160kg, max. punching diameter: 76.2mm, axis speed: approx. 100m/s, max. punching stroke rate: approx. 1000 strokes/min, max. marking stroke rate: approx. 2500 strokes/min, tool magazine: 18, clamps: 2, max. part size X/Y: 500mm/500mm, operating hours: 22146h. Including tool cassettes, various punches and dies, a MultiTool, and Easy Type. Weight: approx. 9.8t, machine dimensions X/Y/Z: approx. 6500mm/6203mm/2252mm. Documentation available. An on-site inspection is possible. Isdjzpyygopfx Aaxstk

Condition: used, Year of construction: 2006, functionality: unexamined, punching force: 30 t, For sale is a Finn-Power LP 6 punch-laser combination machine, manufactured in 2006. Manufacturer: Finn-Power Model: LP 6 Tool stations: 21 Year of manufacture: 2006 Siemens Sinumerik 840D control system CO₂ laser, 2.5 kW Isdpfx Aezrgkwjaxjtk Hydraulic punching technology with 300 kN punching force Multi-tool system Forming functions Automatic clamping positioning CE-compliant safety features Cooling system Extraction system Part conveyor belt Machine is operational Inspection and demonstration possible Available immediately upon agreement For further information, technical data, or to arrange an inspection, please do not hesitate to contact us.

Condition: used, Year of construction: 2008, Punching-shearing unit, complete Manufacturer: GEKA Year of manufacture: 2008 MODEL: ALPS-150 Production hours: 400 Application type: Shearing Machine type: Shearing machine Control unit brand: Fagor Isdpfx Aaoudbzyexetk Technical specifications: General data Width: 2200 mm Depth: 1350 mm Height: 2400 mm Weight: 5000 kg Control unit Manufacturer: Fagor Model: CNC 8070 CNC main language: English CNC language customizable: Yes Main drive shear force 2500 kN Workpiece X : 15000 mm Workpiece Y: 160 mm Workpiece Z: 200 mm Max. table load: 400 kg Max. material thickness: steel 16 mm Electronic main connection 50 hz/3P Additional equipment: 3xloading table 3xside loading table 3xunloading table This GEKA ALPS-150 was manufactured in Spain in 2008 and has been in production for 400 hours. production hours. This machine is a complete automatic solution for punching, marking and shearing angles for medium and large steel profiles. With few working hours this machine is in perfect condition.

Condition: excellent (used), Year of construction: 2006, functionality: fully functional, Kaltenbach KPS 506 CNC Flat Bar / Angle Punching / Shearing Line – Year 2007. 500mm Capacity Flat Bar. Ijdpfx Ajzcqnieaxotk 160mm x 160mm Angle. 3 head Punch. Horizontal punch. 6 metres Gripper feed. Mitre Shearing.

Condition: good (used), functionality: fully functional, Capacity: 250 x 6 mm Electric, variable angle adjustment, independently adjustable from 30 to 130 degrees Ijdozi Hi Uopfx Aaxjtk Drive: Hydraulic Blade height and depth adjustable via potentiometers Table dimensions: 1200 x 900 mm Motor power: 5.5 hp Connection voltage: 380V Length: 1000 mm Width: 1200 mm Height: 1400 mm Weight: 1200 kg VAT/margin: VAT: The price shown is exclusive of VAT (VAT is deductible for businesses) Please note: The information on this page has been obtained and compiled to the best of our knowledge and belief, but accuracy cannot be guaranteed. Accordingly, it does not constitute a representation or contract, and we advise you to verify all relevant details.

Condition: excellent (used), Year of construction: 2018, operating hours: 34,000 h, functionality: fully functional, Great opportunity! Like-new Salvagnini S4 / P4 from the first owner, built in 2018! The machine is in perfect, like-new condition and ready for immediate use! The system has been regularly serviced by Salvagnini, and the machine is covered by a maintenance contract. Technical data and Salvagnini internal number: Punching machine/shear with rotating station S4Xe.30 consisting of: Conveyor belt TAC30.L2000 Corner turning device DA30 Punching machine S4Xe.30 Punch head H3 Oil-dynamic hydraulic unit HU22E Control and management of the SiX system Right-angle shear CS5S Turning device DF Lower cylinder EI09 Embossing unit BU30 Double rotating punch P2R3132 Double rotating punch P2R3334 Threading roll unit ME35 Device for automatic application of self-adhesive labels LBC (label printer) Portal robot MC30 Conveyor with brushes CTS30 Shear lift table TCV3015 Water-air cooling unit R81E Tools (detailed list available on request) P4Xe-3125 Swivel bending machine including roller and turning station consisting of: Shear lift table TCV3015.CT.RPC Feeder-destacker device PCD3015 Turning device RIP3015 Bending center P4Xe-3125 Upper bending die LS Lower bending die LI Programmable clamping device U1 Standard clamping foot NS Control and management of the SiX system Work surface with balls SFE Device for cleaning and lubricating the bending dies PSE Asymmetrical control for auxiliary bending tools for positive bends CLA-A CLA tool set with "swan neck profile" UCE1500G38 Asymmetrical control for auxiliary bending tools for negative bends CLA-N-A CLA tool set with "swan neck profile" for negative bends UCE1500NG38 Device for V-notch RSU.UR-4 Swiveling device for auxiliary tools T Ijdpfxezh I Iis Aaxjtk Option for cutting and dispensing profiles CUT.SPC31 T-tool for 90° bends UTZ2 Delivery device/buffer for panels SAP34.POS The system has a hinged belt conveyor for central disposal of the sheet metal sections. These are then conveyed to tipping containers via a swan neck conveyor. Sorting according to stainless steel, aluminum, and black sheet metal is fully automatic. A weighing and level measuring device is integrated and reports the level via the control system. The machine can be inspected and tested by arrangement. Additional videos and detailed images of the system are available on request!

Condition: excellent (used), Trumpf Itjdpfxjzd Ulas Aaxek We offer a laser and punching machine here. Technical specifications: Power supply: 400V/50 Hz Fuse rating: 3 x 100 A Connected power: 65 kVA Working area X x Y without repositioning: Combined operation: 2585 x 1280 mm Punching operation: 2585 x 1370 mm Laser operation: 2585 x 1280 mm Performance: Laser power: 2000 W Maximum sheet thickness: 8 mm Maximum punching force (including 20 kN active back-up): 220 kN Active back-up (programmable in steps): 4.5-20 kN Maximum workpiece weight: 200 kg Maximum clearance height: Punching operation: 35 mm Laser operation: 22 mm Speeds: X-axis: 90 m/min Y-axis: 60 m/min Simultaneous stroke sequence: Punching: 900 strokes/min Marking: 2800 strokes/min C-axis: Punching: 60 revolutions/min Thread forming: 330 revolutions/min Tools: Tool stations on the linear magazine: 19 with 2 grippers Number of tools when using a multi-tool: 19 to 190 tools Rotation of all tools: 360° Tool change time: 1.5-5 s Maximum punching diameter: Single stroke: 76.2 mm on all tool stations Standard multi-cut: 200 mm Maximum bending height: 25 mm Maximum part size: 500 x 500 mm Accuracy: Positioning deviation: ± 0.1 mm Average positioning spread: ± 0.03 mm TRUMPF CNC control: Base: Siemens SINUMERIK 840D Type: TC 6000 L 1300 Loading and dismantling must be carried out by the buyer! Condition: used Scope of delivery: (See picture) (Changes and errors in the technical data are subject to change!) We will gladly answer any further questions you may have by phone.

Condition: ready for operation (used), Two small punching machines for crimping binding spines are available. 1) Swigraph E420C punching and wire closing machine, max. working width: 430mm, binding element diameter range: 4.7mm-31.75mm. 2) Two-piece Ibico EP28/HB28 plastic comb binding system, punching width: 420mm, max. punching capacity: approx. 35/min, max. binding capacity: 500 sheets, machine dimensions X/Y/Z: approx. 550mm/450mm/600mm, weight: approx. 65kg. Documentation available. An on-site inspection is possible. Ijdeznx Itspfx Aaxotk

Condition: used, machine/vehicle number: 1903, Universelle Stanzmaschine - Punching machine Masfeld ZEL 1903Serial-No. 1903 Online-Video-Inspection by Skype-Video We would be very pleased with your visit - more machines on Stock Available Immediately - Can be inspect On Stock Emskirchen / Nürnberg - Can be test Itedoh Axmfepfx Aaxjk