Used Okuma Lc 20 for sale (215)

Condition: ready for operation (used), A CNC slant bed lathe Okuma is available. Chuck diameter: 200mm, swing diameter: 400mm, turning diameter: 300mm, turning length: 470mm, tool stations: 8. Machine dimensions X/Y/Z: approx. 4000mm/2150mm/2150mm, weight: approx. 5500kg, control: OSP 3000 L. Documentation available. An on site inspection is possible. Hedpfxoyttwzo Ad Ren

Condition: used, OKUMA BLUSHLESS SERVOMOTOR DRIVE UNIT BL-120E-20 Hodpfoy Suw Uex Ad Rjn

Condition: good (used), Year of construction: 2002, Ref. -No.: 10434 Manufacturer: OKUMA Hjdoy Ed Ayopfx Ad Ren Type: LC 40 Year of construction: 2002 Type of control: CNC Control: FANUC 18-i TB Storage location: Halberstadt Country of origin: Germany Turning Speeds: 10 - 2.800 RPM Bar passage: 91 mm Chuck diameter: 450 mm Tailstock - diameter: 120 mm Turning Diameter: 550 mm Turning Length: 800 mm Swing Diameter: 800 mm Spindle passage: 90 mm Spindle nose: A2-8 Tailstock Quill Stroke: 150 mm Total Power Requirement: 44 kW Weight Of The Machine Ca.: 8 t Number of tool stations: 12 pc

Condition: ready for operation (used), Year of construction: 1998, functionality: fully functional, turning length: 280 mm, spindle speed (max.): 4,200 rpm, travel distance X-axis: 155 mm, travel distance Z-axis: 320 mm, controller model: OSP 700L, TECHNICAL DETAILS Maximum turning length: 280 mm X-axis travel: 155 mm Z-axis travel: 320 mm Spindle speed: 4,200 rpm MACHINE DETAILS Hsdpfsy S S Hgsx Ad Rsn Control system: OSP 700L Turret: V12, direct mounting EQUIPMENT Chip conveyor Touch probe Coolant pump Parts collector Collet chuck

Condition: good (used), Year of construction: 1998, Used CNC turning lathe by Okuma Type: LCS 15 Includes tool holder Turning length: 280 mm Hsdpoy U Iz Sjfx Ad Rjn Turning diameter: 270 mm Tool changer Year of manufacture: 1998 Excluding bar feeder and chip extraction system.

Condition: excellent (used), Year of construction: 2014, turning length: 700 mm, travel distance X-axis: 205 mm, travel distance Z-axis: 700 mm, spindle motor power: 22,000 W, total height: 2,800 mm, total length: 6,000 mm, total width: 3,900 mm, overall weight: 9,800 kg, Complete machining with twin spindel, upper and lower turrets Kitagawa 3 chuck left and right Tool holders with driven tools axial and radial Large jaws cabinet with inserts OGL Gantry loader with ca 10 Kg load capacity Chip conveyor Paper Filtration Pressure Tank Hjdpfoyn Em Rsx Ad Rjn Max. turning Ø: 400mm X-Axis: 205mm Z-Axis: 700mm Spindle bore: 62mm Speedrange: 6000Rpm Spindle power: 22kW Subspindle speeds: 6000Rpm Subspindle bore: 62mm Subspindle power: 15kW ATC / revolver: 16 Speed live tools: 6000Rpm Positions lower revolver:16 Speed live tools: 6000Rpm Power live tools: 7kW Chip conveyor: yes Tool eye: yes Length: 6000mm Width: 3900mm Height: 2800mm Weight: 9800kg Please Note: The information on this page has been obtained to the best of our ability and belief, and from the manufacturers where possible. It is given in good faith, but its accuracy can not be guaranteed. Accordingly, it will not form a representation or constitute contractual terms. We advise you to check any vital details!

Condition: ready for operation (used), Year of construction: 2013, spindle speed (max.): 6,000 rpm, travel distance X-axis: 260 mm, travel distance Y-axis: 100 mm, travel distance Z-axis: 350 mm, spindle motor power: 11,000 W, total height: 2,250 mm, total width: 1,985 mm, overall weight: 4,050 kg, controller manufacturer: OKUMA, controller model: OSP P300L, product length (max.): 1,734 mm, number of slots in tool magazine: 12, number of axes: 3, This 3-axis Okuma LB2000EXII MC was manufactured in 2013. It features a maximum swing diameter of 580 mm and a maximum machining diameter of 360 mm. The machine includes a turret head with 12 tool positions and a rapid traverse speed of 25 m/min on the X-axis. If you are looking to get high-quality turning capabilities, consider the Okuma LB2000EXII MC horizontal turning machine we have for sale. Contact us for further details. • Chuck size: 6" • Max. swing diameter: 580 mm • Max. machining diameter: 360 mm • Max. machining length: 150 mm • Spindle power: 11.0/7.5; (15/11; 22/15) kW • Turret: • Tool positions: 12 • External tooling: 20 x 20 mm • Internal tooling: Ø 32 mm • Driven tool speed: 45–6000 rpm • Driven tool power: 5.5/3.7 (7.1/4.1) kW Hodpfoy Sgr Rsx Ad Ron • Rapid traverse: • X-axis: 25 m/min • Y-axis: 12.5 m/min • Z-axis: 30 m/min • W-axis: — • C-axis: 200 rpm • Hours: • Total: 43,157 • Cutting: 18,671 Additional equipment • Bar feeder: IRCO MUK-7012 (bar Ø 6–70 mm, length 1250 mm) • Tool holders (including driven tool holders) • Collet chuck: Hainbuch SPANNTOP Technical Specification Counter Spindle No Driven Tools Yes

Condition: ready for operation (used), Year of construction: 2011, spindle speed (max.): 4,500 rpm, travel distance X-axis: 210 mm, travel distance Z-axis: 380 mm, controller manufacturer: OKUMA, controller model: OSP‑P200LA‑R, number of axes: 3, This 3-axis Okuma GENOS L200E-M was manufactured in 2011. It features a maximum turning diameter of 200 mm and a Z-axis travel of 380 mm. The machine is equipped with a 12-station turret with driven tools, allowing for milling and drilling on the C-axis. If you are looking to get high-quality turning capabilities, consider the Okuma GENOS L200E-M horizontal turning center we have for sale. Contact us for further details. • Turning configuration: 2 axes (X, Z) + C‑axis; no Y‑axis • Tailstock: Equipped • Tool presetter: Automatic tool presetter installed • Turret: 12‑station turret with driven tools (milling and drilling on C‑axis) • Max. turning diameter: 200 mm • Spindle nose: ASA A2‑6 • Spindle bore diameter: approx. 50 mm • Electrical supply: 380 V, 3‑phase, 50/60 Hz • Average apparent power: 17.7 kVA Hodey Rrwvspfx Ad Ron • Full‑load current: 26.7 A • Max. motor current draw: 45 A Technical Specification Counter Spindle No Driven Tools No

Condition: excellent (used), Year of construction: 2015, Okuma GENOS L200E-MY CNC Lathe Technical Data Manufacturer: Okuma Model: GENOS L200E-MY Control: OSP-P300L-R Voltage: 400 V Phases: 3 P Frequency: 50/60 Hz Connected load: 15.3 kVA Rated current: 25.6 A Short-circuit withstand capacity: 2.5 kA Max. turning diameter: Ø 200 mm Max. turning diameter x length: Ø 200 x 380 mm Swing over bed: Ø 450 mm Swing over cross slide: Ø 300 mm Workpiece weight (single-sided support): 120 kg Spindle diameter: Ø 100 mm Spindle nose: JIS A2-6 Spindle bore: Ø 66 mm Spindle speed range: stepless Spindle speed: 75 to 3000 rpm Number of tool stations: 12 Turret type: Multitasking V12 turret Hsdpoy R A N Ajfx Ad Rsn Tool holder, external turning tools: 20 x 20 mm Tool holder, internal turning tools: Ø 32 mm Rotating tool speed: 6000 rpm Travel (Z-axis): 400 mm Travel (X-axis): 165 mm Travel (Y-axis): 80 mm Feed range: 0.001 to 1000 mm/rev Rapid traverse Z-axis: 25000 mm/min Rapid traverse X-axis: 20000 mm/min Rapid traverse Y-axis: 10000 mm/min Tailstock quill diameter: Ø 55 mm Tailstock quill stroke: 80 mm Machine height: 2040 mm Footprint: 2120 x 1750 mm Machine weight: 4800 kg Year of manufacture: 2015 No guarantee is given for the correctness, completeness or up-to-dateness of the information provided.

Condition: used, Year of construction: 2000, max. 800 mm turning length max. 800 mm chuck ohne documentation inkl. control Okuma OSP turning speed range 10-2800 U/min bar material dia. ca. 91 mm spindle nose A2-8 output 44 kw Hedpfxsh D Anaj Ad Ren chucking diameter ca. 450 mm 12 Fach tail stock ca 150 mm weight of the machine ca. 8 t +++++ Please note: The machine is dismantled and ready for loading. It is not possible to show it under power or make a video. Our offer includes already the best pictures. So we don’t have and won’t send additional pictures. +++++

Condition: ready for operation (used), Year of construction: 2010, spindle speed (max.): 4,500 rpm, travel distance X-axis: 165 mm, travel distance Z-axis: 400 mm, spindle motor power: 11,000 W, total height: 1,569 mm, overall weight: 3,800 kg, controller manufacturer: OKUMA, controller model: OSP P200 L, number of axes: 3, This 3-axis Okuma GENOS L200E-M was manufactured in 2010. It features a maximum turning diameter of 200 mm and a turning length of 380 mm. The machine is equipped with a spindle speed of 4,500 rpm and a main spindle power of 11 kW. If you are looking to get high-quality turning capabilities, consider the Okuma GENOS L200E-M horizontal turning machine we have for sale. Contact us for further details. • Max swing over covers: 450 mm • Max turning diameter: 200 mm • Max turning length: 380 mm • Spindle nose: ASA A2-6 • Front bearing diameter: 100 mm • Spindle bore: 62 mm • Bar capacity: 50 mm • Rapid traverse (X/Z): 20–25 m/min • Tailstock taper: MT No. 5 • Tailstock quill stroke: 100 mm • Turret type: VDI-30 V12 • Indexing time (1 position): 0.1 sec • OD tool size: 20 x 20 mm • ID tool size: 32 mm • Live tool speed: 6,000 rpm • Live tool power: 4.0 / 1.8 kW • Floor space: 2.081 x 1.550 m • Total power on time: 23,498 hours • Operating time: 6,490 hours • Cutting time: 5,278 hours Hodpoy A I Stofx Ad Rsn Additional equipment • Static tool holder kit included Technical Specification Counter Spindle No Driven Tools No

Condition: good (used), Year of construction: 2007, functionality: fully functional, travel distance X-axis: 900 mm, travel distance Y-axis: 780 mm, travel distance Z-axis: 780 mm, total height: 31,500 mm, Equipment: documentation/manual, rotational speed infinitely variable, Dear customer, we have an Okuma MA 500 HB 6APC in good condition in stock for you. Hodjvta Sbopfx Ad Rjn We look forward to your inquiry and remain with best regards, Your Neff - The Okuma Specialist Team Data sheet: Control: OSP P200-M Travel paths X-axis: [mm] 900 Y-axis: [mm]: 780 Z-axis: [mm]: 780 B-axis: [degrees] 1; 360 degree incrementation Tool changer 200 ATC MAS BT50 Tool positions: 200 Tool holder: MAS BT50 Maximum tool weight: [Kg] 500 Maximum tool length: [mm] 450 Main spindle Max. speed: [1/min] 6,000 Drive power: [kW] 33 Pallet station 6 APC Pallet dimensions: [mm] 500×500 Workpiece weight: [Kg] 950 Workpiece size: [mm] 800×1000 Other features: – Renishaw Probe – Renishaw Tool Break Control – Mayfran Concept with high pressure pump Neff The Okuma specialist and NeffBuy We are also happy to provide you with the all-round carefree package, viewing in our showroom including demonstration and Acceptance, loading, transport, assembly and commissioning of the machine as well as instructions and subsequent service. We operate Okuma CNC service throughout Europe, both electronically and mechanically, and on top of that we have a 1200 m2 inventory of all Okuma spare parts, please visit our homepage.

Condition: used, OKUMA LB 200 M is a CNC turning lathe for high‑precision machining, accuracy and reliable operation. Capacities: turning Ø over cross‑slide 420 mm; swing over bed 530 mm; spindle hole 53 mm; max Ø 300 mm; travels Z 335 mm, X 180 mm. Specs: rapid traverse X 25 m/min, Z 30 m/min; spindle speeds 50–6000 t/min; 3x400 V 50 Hz; total power 16 kVA; weight ≈3300 kg; dims 2035×1720×1700 mm. Equipment: 12‑position fixed‑tool turret; tailstock Morse 4, spindle stroke 80 mm, Ø 55 mm. Enables tight tolerances; typical sectors: automotive, aerospace, medical, machine building. Hjdpsyxnxxjfx Ad Rjn

Condition: used, OKUMA LB 2000 EX is a CNC turning lathe designed for precision, high accuracy and reliability. Capacities: spindle hole 62 mm; max turning length 300 mm; max turning diameter 430 mm; travels Z 350 mm, X 260 mm. Specs: rapid traverse Z 30 m/min, X 25 m/min; stepless spindle 50–6000 t/min; power 50 Hz 3x 400 V; weight ≈3250 kg; dimensions L1900×W1750×H1850 mm. Equipment: 12-position turret. Capable of tight tolerances; typical applications: automotive, aerospace, medical, watchmaking, machine tools. Hsdpfx Adeyxnxfo Rjn

Condition: good (used), Year of construction: 2007, Used OKUMA lathe - Model: LT200-M TwinStar - Year: 2007 Hedpfov S Svvex Ad Rjn - including chip conveyor - coolant tank - immediately available

Condition: good (used), Year of construction: 2006, Used lathe by OKUMA Hedov S Su Sspfx Ad Ron - Model: LT 200-M TwinStar - Year of manufacture: 2006

Condition: excellent (used), Travels: X-axis: 155 mm Z-axis: 320 mm Swing diameter over bed: 450 mm Swing diameter over carriage (slide): 350 mm Maximum turning diameter: 270 mm Hsdpfxeyvy Uts Ad Rjn Maximum turning length: 500 mm Spindle speed, infinitely variable: 75 – 3500 rpm Spindle motor: 7.5 kW Tool turret: 12 stations Dimensions (L x H x W): 2200 x 1635 x 1670 mm Weight: 3800 kg

Condition: used, Year of construction: 1988, functionality: fully functional, machine/vehicle number: M08L/8001, Offer Number: M08L/8001 Machinetype: 2 die - 3 blow transfer header Info: bushing cut-off , PKO in 2nd and 3rd Make: ASAHI OKUMA Type: ORH120 Constr. year: 1988 Hedpfswi S Raox Ad Rsn diameter range: 14 mm number of dies: 2 number of stations (incl. cut off): 4 cutting length: 100 mm shaft length under head: 90 mm output - pieces/min: 100 press power: 120 to Location: In our warehouse

Condition: used, Year of construction: 2022, machine/vehicle number: L2E0253, CNC lathe Hedpfx Adoy Axr Rj Rjn

Condition: new, Year of construction: 2018, functionality: fully functional, Standard technical data: Swing diameter over bed: 580 mm Swing diameter over carriage: 470 mm Maximum machinable diameter: 360 mm Max. workpiece length: 250 mm Traverse (X): 260 mm Traverse (Z): 350 mm Traverse (Y): 100 mm (+/- 50) C axis: 360 degrees (0.001-degree increments) Spindle speed: 50-6,000 rpm Spindle nose: JIS A2-6 Spindle bore diameter: Ø62 mm Front spindle bearing diameter: Ø100 mm Hedpey H H Afsfx Ad Ren Turret type: M-V12 Number of tools: 12 Tool size: 20x20 mm Tool shank diameter: Ø32 mm Tool change time: 0.1 sec Driven tool speed: 45-6,000 rpm Rapid traverse (X): 25 m/min Rapid traverse (Z): 30 m/min Rapid traverse (Y): 12.5 m/min Main motor power (15 min/continuous): 11/7.5 kW (PREX) Driven tool motor power: 5.5/3.7 kW (PREX) Machine dimensions (L x W x H): 2,020 x 1,734 x 2,250 mm Machine weight: 4,050 kg Control: OSP P300L Standard specification: 1 OKUMA CNC Lathe Model LB2000 EXII MYC with OSP-P300L CNC Controller, including CE mark & EMC 1 set European Standard Specification 1-1. V12 radial turret head, 1 set 1-2. Spindle, 1 set (1) Spindle speed: 50-6,000 rpm (1 set) (2) Spindle motor PREX 11/7.5 kW (1 set) (3) Spindle: JIS A2-6; bore Ø62 mm (1 set) (4) C-axis control, 360 degrees (0.001-degree increments) (1 set) (5) SR1146 hydraulic cylinder for chuck (1 set) 1-3. MT4 tailstock 1-4. Dual-action foot pedal for chuck and tailstock side, 2 sets 1-5. Driven tool motor PREX 5.5/3.5 kW (2 min continuous) 1 set 1-6. Driven tool speed: 45 - 6,000 rpm, 1 set 1-7. Work area lighting, 1 set 1-8. Full enclosure, 1 set 1-9. Chip tray, 1 set 1-10. Door interlock, 1 set 1-11. Lubrication monitoring, 1 set 1-12. Automatic chuck open/close on main spindle, 1 set 1-13. Chip air blow, 1 set 1-14. Foundation bolts, 1 set 1-15. Tool setter, 1 set 1-16. CE marking, 1 set 1-17. IEC standard compliance, 1 set 1-18. Transformer, 1 set 1-19. Coolant system with 250W pump, 1 set 1-20. OSP-P300L CNC control with 15" color touchscreen monitor, 1 set 1-21. OSP-P300L Advanced One Touch IGF-M-E kit specification (1 set) * Multitasking machines coordinate conversion (1 set) * Multitasking machines profile generation (1 set) * Advanced One Touch IGF (graphical programming assistant with dialogue-based interface) (1 set) * Real 3D simulation (1 set) * Cycle time monitoring (1 set) * Load monitor (1 set) * NC operation monitor (1 set) * Cycle time reduction function (1 set) * Hi-Cut Pro (machining-specific servo optimization) (1 set) * Variable spindle speed control (1 set) 1-22. 2-stage position indicator lamp, 1 set 1-23. Program storage: 2GB, 1 set 1-24. Operation memory: 2MB, 1 set 1-25. Spindle orientation, electric, 1 set 1-26. Inch/metric conversion, 1 set 1-27. Ball screw pitch error compensation on X/Z axes, 1 set 1-28. Workpiece ejection monitoring, 1 set 1-29. Lifting hooks, 1 set 1-33. TAS-C thermal compensation on the frame 6” chuck Chip conveyor

Condition: used, Year of construction: 2012, functionality: fully functional, 1 OKUMA CNC Lathe Model LT2000EX-2M1Y with OSPP200LA CNC Controller Including CE mark 1 set 〈European Standard Specification〉 1-1 Spindle motor VAC 11/7.5 kw (5 min./cont. ) 2 set 1-2 Spindle speed 50 - 6,000 min-1 2 set 1-3 Spindle dia. 62/100 mm, 140 Flat nose 2 set 1-4 C-axis control, 360 degree at 0.001 degree increment 2 set 1-5 Y-axis 95mm (+50 to -45) for upper turret 1 set 1-6 Upper V16 (turning & milling) + Lower V16 (turning & milling) Radial turret (No tool holder included) 1 set 1-7 Rotary tool drive motor, PREX 5.5/3.7kw (2 min/count) 2 set 1-8 Rotary spindle speed 45-6,000 min-1 2 set 1-9 Coolant supply system, 0.8kw x 3 sets pump motor 1 set 1-10 Work light, fluorescent lamp 1 set 1-11 Totally enclosed guard 1 set 1-12 Door interlock 1 set 1-13 Chip pan, side chip disposal type 1 set 1-14 Foundation washers and leveling jack screws 1 set 1-15 Machine lifting hooks 1 set 1-16 Chuck auto open / close with confirmation 2 set 1-17 Chuck air blower 2 set 1-18 Lubrication monitor B-1 1 set 1-19 CE mark and EMC 1 set 1-20 Application for IEC standard 1 set 1-21 Double chuck operation pedal 2 set 1-22 Synchronized tapping (for LT2000EX-M) for Milling rotary tool 1 set 1-23 OSP-P200LA CNC Controller with 15" colour display, touch panel 1 set 1-24 OSP-P200LA 3D-M-E kit specifications 1 set *Multitasking machines Coordinate conversion (1 set) *Multitasking machines Profile generation (1 set) *Program storage Standard: 2GB (1 set) *Operation buffer Standard: 2MB (1 set) *Real 3D simulation (1 set) *Cycle time over check (1 set) *Load monitor (spindle, feed axis) (1 set) *NC operation monitor (incl. counter and monitoring function) (1 set) *Cycle time reduction function (1 set) *Variable spindle speed control (1 set) 1-25 Pitch error compensation X + Ys + Z 1 set 1-26 Inch / metric switchable function 1 set 1-27 Workpiece jump out detection 1 set 1-28 Status indicator lamp (2-layer lamp) instead of status indicator in 3D-E kit Hjdoy Rnbdepfx Ad Ron 1 set 1-29 Electrical power source application to suite local power source at each countries (CE transformer) 1 set 1-30 Chuck open/close during spindle rotation (LT-Standard) 1 set 1-set of tools - see last photo

Condition: good (used), Year of construction: 1987, operating hours: 25,000 h, functionality: fully functional, turning diameter over cross slide: 550 mm, turning length: 1,000 mm, turning diameter: 400 mm, spindle bore: 90 mm, spindle speed (max.): 2,500 rpm, spindle speed (min.): 10 rpm, spindle motor power: 22,000 W, total length: 4,510 mm, total width: 2,370 mm, quill stroke: 150 mm, overall weight: 9,500 kg, Equipment: chip conveyor, documentation/manual, rotational speed infinitely variable, Well-maintained LC40 for sale. The machine is powered and available for inspection. 12-position turret. Includes: 2 pcs. 3-jaw chucks, 240/330mm, various tools and accessories (see pictures), measuring probe, Mayfran chip conveyor. Hodpfx Asyvulgjd Rsn

Condition: like new (used), Year of construction: 2024, functionality: fully functional, maximum turning diameter: 2000 mm maximum turning length: 1400 mm Hjdeywg Aajpfx Ad Ren control: Okuma OSP - P300 SA maximum workpiece weight: 10,000 kg maximum workpiece dimensions: 2000 mm x 1400 mm chuck diameter: 2000 mm C-axis positionable to 0.001° tool spindle traversable in X/Y/Z and indexable in B B-axis swivels 150° Y-axis travel: 1600 mm (+/- 800 mm) coolant supply through tool spindle automatic dual pallet changer tool stations: 60, HSK 100 The complete equipment of the machine can be found in the .pdf file.

Condition: used, turning diameter 260 mm turning length 280 mm control OSP500 1. Machine Specifications Item Unit Specification Number of controlled axes – 2 Swing diameter over bed mm Ø 450 Swing diameter over slide mm Ø 350 Swing diameter over cross slide mm Ø 300 Maximum turning diameter × length mm Ø 260 × 280 Hsdpfewm Rrdsx Ad Rjn Spindle diameter mm Ø 100 Spindle nose – JIS A2-6 Spindle taper mm Ø 70 × 1/10 Spindle bore mm Ø 62 Spindle speed range rpm 35 – 4,000 Z-axis travel mm 320 Z-axis rapid traverse mm/min 20,000 X-axis travel mm 155 X-axis rapid traverse mm/min 15,000 Turret type – V Number of tools – 8 (optional 12) Tool size (external turning) mm ¦ 25 Tool size (internal turning) mm Ø 40 (optional Ø 32)

Condition: ready for operation (used), Year of construction: 2005, operating hours: 23,082 h, functionality: fully functional, machine/vehicle number: 114599, turning length: 541 mm, turning diameter: 210 mm, travel distance X-axis: 192 mm, travel distance Y-axis: 50 mm, travel distance Z-axis: 700 mm, TECHNICAL DETAILS Machining specifications Turning length: 541 mm Turning diameter: 210 mm Axes and travels X-axis travel: 192 mm Y-axis travel: 50 mm Z-axis travel: 700 mm Spindle Spindle speed: 6,000 rpm Spindle motor power: 11 kW Feed X-axis feed rate: 30 m/min Z-axis feed rate: 40 m/min MACHINE DETAILS Electrical data Supply voltage: 400 V Phases: 3 P Frequency: 50 Hz Operating hours On time: 92,265 h Spindle hours: 23,082 h Total weight: 8,000 kg EQUIPMENT Documentation/manual Chip conveyor Note: The machine will remain powered until the end of the auction, after which it will be dismantled. Hjdpfsw Ekruox Ad Rjn