Used Emco Emcomill E350 for sale (133)

Condition: like new (used), Year of construction: 2013, functionality: fully functional, Universal Tool Milling Machine Emco Emcomat FB-450 Linear with Position Indicator – Near-Mint Condition, CE-Compliant!! Technical Data: >> Year of manufacture: 2013 | Machine No.: F9A124962 >> Milling table clamping surface: 800 x 400 mm T-slots: 8 Slot width: 14 H8 Slot spacing: 50 mm Maximum load: 150 kg >> Infinitely variable spindle speeds: 10–5000 rpm >> Infinitely variable feed rates: 10–5000 mm/min Rapid traverse X-axis: 5000 mm/min >> Travel (X/Y/Z): 450/350/400 mm >> Vertical and horizontal quill – SK40 >> Hydraulic drawbar system >> Quill stroke: 80 mm >> Weight: approx. 2000 kg >> Dimensions (LxWxH): approx. 2.5 x 2 x 2 m >> Main drive motor: 10 kW >> Spindle brake >> Technical documentation, spare parts plans, operating manual included >> Hinged safety enclosure >> Coolant system >> Machine lamp >> Dividing head >> Rotary table >> Machine vice >> Steady rest Hnjdpfx Abowycv Ijrou About the Machine: For sale is a Universal Tool Milling Machine Emco Emcomat FB-450 Linear with position display, in near-mint condition. The machine comes from a government operation and was used only occasionally for training purposes. The control system is very user-friendly. Additionally, the machine features hydraulic clamping in both vertical and horizontal operation. Conversion from vertical to horizontal mode is very simple due to the tilting vertical head. The Emco has been mechanically and electrically tested in our workshop. Take advantage of the opportunity to inspect and test the machine under power at our facility.

Condition: like new (used), Year of construction: 2008, functionality: fully functional, Universal Milling Machine Emco C40 Linear with Digital Display and Path Control, Excellent Condition, CE Compliant! Technical Data: >> Year of manufacture: 2008 Machine No.: BA1DW2503 >> Milling table clamping surface: 800 x 400 mm Clamping slots: 8 Slot width: 14 H 8 Slot spacing: 50 mm Maximum load: 300 kg >> Infinitely variable spindle speeds: 10–5000 rpm >> Infinitely variable feed rate: 10–2000 mm/min Rapid traverse X-axis: 5000 mm/min >> Travel (X/Y/Z): 450/350/400 mm >> Vertical quill and horizontal spindle – ISO 40 (SK40) >> Hydraulic pull-in system >> Quill stroke: 80 mm >> Weight: approx. 2000 kg Hnjdpfx Aewxxd Ejbrsu >> Dimensions (LxWxH): approx. 2.5 x 2 x 2 m >> Main drive motor: 7 kW >> Spindle brake >> Technical documentation, spare parts diagrams, operating manual >> Hinged enclosure >> Coolant system >> Machine lamp >> Indexing/Dividing attachment with tailstock >> Steady rest >> Röhm machine vice About the machine: Offered for sale is a universal milling machine Emco C40 Linear with path control. This universal milling machine is in almost as-new condition. It comes from a governmental facility where it saw only limited use. The control unit is very user-friendly. Additionally, the machine features hydraulic clamping both vertically and horizontally. Switching from vertical to horizontal setup is very straightforward by simply swinging away the vertical head. The Emco has been both mechanically and electrically inspected by us. Take the opportunity to view and test the machine under power at our location.

Condition: like new (used), Year of construction: 2008, functionality: fully functional, Equipment: documentation/manual, Universal Milling Machine Emco C40 Linear with Digital Display and Path Control Very Good CONDITION CE-Compliant!! Technical Data: >> Year of manufacture: 2008 Machine No. BA1DW2501 >> Milling table clamping surface: 800 x 400 mm Clamping slots: 8 Hnsdpfx Aewxxdfobrsu Slot width: 14 H 8 Slot spacing: 50 mm Max. load: 300 kg >> Infinitely variable spindle speeds: 10–5000 rpm >> Infinitely variable feed: 10–2000 mm/min Rapid traverse X: 5000 mm/min >> Travel X/Y/Z: 450/350/400 mm >> Vertical and horizontal spindle – SK40 >> Hydraulic drawbar system >> Quill stroke: 80 mm >> Weight approx. 2000 kg >> Dimensions approx.: 2.5 x 2 x 2 m >> Main drive motor: 7 kW >> Spindle brake >> Technical documentation, spare parts diagrams, operating manual >> Hinged safety enclosure >> Coolant system >> Machine lamp >> Dividing head with tailstock >> Counterholder >> Röhm machine vice About the machine: For sale is a universal milling machine Emco C40 Linear with path control. This universal milling machine is in almost as-new condition. It comes from a government facility where it was only used occasionally. The control system is very user-friendly. Furthermore, the machine is equipped with hydraulic clamping in both vertical and horizontal modes. Switching from vertical to horizontal operation is very simple by folding away the vertical head. The Emco has been mechanically and electrically inspected by us. Take advantage of the opportunity to view and test the machine under power at our location.

Condition: ready for operation (used), Year of construction: 2014, Control Unit Brand SIEMENS Hnjdpfswn N Iyex Abrsu Model 828 D Main Drive Spindle speed range 50-12000 Number of axis 3 Movement X-Axis Movement 900 mm X-Axis Rapid Traverse 24 m/min Y-Axis Movement 500 mm Y-Axis Rapid Traverse 24 m/min Z-Axis Movement 500 mm Z-Axis Rapid Traverse 24 m/min Table Outer length 1000 mm Outer width 520 mm Min distance between vertical spindle and table 100 mm Max distance between vertical spindle and table 600 mm Table load 800 kg Tools Slots in storage 20 Media Chip conveyor Yes Additional Equipment Rinsing gun Cooling medium tray 360l IKZ 15 bar This 3-axis EMCO EmcoMill E900 was manufactured in 2014. A vertical machining center featuring a Siemens 828D control, it offers a spindle speed up to 12,000 rpm and torque of 83 Nm. It has a travel distance of X 900mm, Y 500mm, Z 500mm, and a rapid traverse rate of 24m/min. The machine includes a chip conveyor, a 360l cooling medium tray, and a 20-tool magazine. If you are looking to get high-quality milling capabilities consider the EMCO EmcoMill E900 machine we have for sale. Contact us for more information. Application Types Milling

Condition: excellent (used), Year of construction: 2008, Digital display Travel paths x/y/z 450/350/400 Tool holder: SK 40 Hnodpfoxacxgsx Abrou Swivelling vertical milling head Speed 5000 rpm All axes with linear guides Ball screws in all axes Coolant system Accessories

Condition: excellent (used), Year of construction: 2023, Work Area Longitudinal slide travel (X) 350 mm Cross slide travel (Y) 250 mm Usable vertical slide travel (Z) 300 mm Distance spindle nose – table surface (min.-max.) 120 – 420 mm Milling Table Cast iron table, ground Clamping surface (LxW) 520 x 300 mm Table surface height above floor 900 mm Max. table load 100 kg Number of T-slots 5 T-slot size acc. to DIN 650 12 mm T-slot spacing 45 mm Milling Spindle Speed range – direct drive 0 – 10,000 rpm (Three-phase asynchronous motor) Torque (100/60% DC) 33 / 41 Nm Power (100/60% DC) 7 / 8.5 kW Tool holder per DIN ISO 69871-A SK 30 Pull stud per DIN ISO 69872 (similar to 7388/2) M12, Type A Tool holder balanced G2.5 (per DIN ISO 1940, at 10,000 rpm) Slide Drives (Servo Motors) Feed rate in X / Y / Z 24 m/min Rapid traverse speed in X / Y / Z 24 m/min Feed force in X / Y / Z 3000 / 3000 / 4000 N Mean positional scatter per VDI 3441 in X / Y / Z 4 / 4 / 4 µm Tool Magazine Tool changer based on S-arm principle with random management Number of tool stations 20 Direct tool change time 2.5 s Max. tool diameter Ø 63 mm Max. tool diameter with adjacent slot empty Ø 80 mm Max. tool length 200 mm Max. tool weight 5 kg Clamping force 1500 N Max. total tool magazine load 60 kg Coolant System (Option) Coolant supply at milling spindle via 3 nozzles Tank capacity (standard) 140 l Delivery pressure at 50 Hz 3.5 bar Hnjdpfx Aew N Nvlsbreu Flow rate at 3.5/1 bar 15 / 65 l/min Pneumatics Supply pressure 6 bar Connection line Ø 10 mm Supply volume 50 l/min Compressed air quality per DIN ISO 8573-1 Purity class 4 Lubrication System Main spindle bearings Lifetime grease lubrication Guideways automatic central oil lubrication Feed screws automatic central oil lubrication Electrical Connection Power supply 3/PE 400~ V Max. voltage fluctuations +10 / -10 % Frequency 50 / 60 Hz Machine connected load 9 kVA Max. main fuse for machine 20 A gG Required short-circuit power 700 kVA Dimensions / Weights Overall height 2200 mm Installation area (WxD) (excluding coolant and options) 1600 x 1710 mm Total machine weight 1970 kg (excluding coolant and options) Coolant tank (standard, empty) 60 kg Chip Conveyor Hinged belt conveyor for wet and dry machining Discharge height 500 mm 4th Axis / NC Rotary Table Resolution 0.01° Max. speed 44 rpm Max. torque 20 Nm

Condition: ready for operation (used), Year of construction: 2012, operating hours: 17,300 h, functionality: fully functional, machine/vehicle number: Q4A124301, travel distance X-axis: 350 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 300 mm, spindle speed (max.): 10,000 rpm, number of slots in tool magazine: 20, TECHNICAL DETAILS Working Area Travel X-axis: 350 mm Travel Y-axis: 250 mm Travel Z-axis: 300 mm Min. distance spindle nose – table: 120 mm Max. distance spindle nose – table: 420 mm Table Clamping surface: 500 x 300 mm T-slots (number/size/pitch): 5x 45x100 mm Max. table load: 100 kg Table – floor distance: 880 mm Spindle Speed range: 50 – 10,000 rpm Spindle motor power (S6): 8.5 kW Spindle torque (S6): 41 Nm Tool holder: ISO 30 Tool Change Number of tool stations: 20 Max. tool diameter: 63 mm (without adjacent tools) Max. tool length: 200 mm Max. tool weight: 5 kg Tool change time: 2.5 s MACHINE DETAILS Dimensions & Weight Machine dimensions (L x W x H): 1,600 x 1,700 x 1,980 mm Weight: 1,970 kg Power supply: 9 kVA Operating hours: 17,300 h EQUIPMENT Hnodpoxa Arajfx Abrou 30 holders 2 Gressel vices Note: The machine will remain powered until 21.09.2025.

Condition: excellent (used), EMCO Model E 900 Control type SIEMENS SINUMERIK 810 D Table dimensions 1000 x 520 mm Linear guides ✓ Travel X-axis 900 mm Y-axis travel 500 mm Travel Z-axis 500 mm Axes 3 Spindle speed 12,000 rpm Spindle mounting ISO 40 - DIN 69871 Hodpfxspgng Hj Abrenu Tool magazine 20 places Coolant supply through the spindle ✓ Spindle motor power 13 kw Year 2017 CE machine ✓ Overall dimensions 2570 x 2445 x H 2920 mm

Condition: good (used), Year of construction: 2005, Control: FANUC Series Oi-TC Max. turning diameter: 310 mm Max. part length: 520 mm Max. bar diameter: 65 mm Travel: X = 210, Y = 610 mm Turret with 12 stations All driven tools Spindle speed range: 60–4,200 rpm Without tailstock Hsdpfxoww H T Ee Abrjnu Chip conveyor EMCO bar feeder

Year of construction: 2006, condition: ready for operation (used), Control Unit Brand SIEMENS Model Sinumerik 840D Main Drive Number of spindles 2 Spindle speed range 6300 Spindle motor power 10 KW Number of axis 4 Media Chip conveyor Yes Additional Equipment Emco standard bar feeder interface Oil mist separator Hedpfx Aexmbypjbrenu 2 coolant pumps for spindle flushing 2 high-pressure coolant pumps (10 bar) Parts ejector with flushing through counter spindle Short bar feeder This 4-axis EMCO TURN 332 MCPlus was manufactured in 2006. It features a CNC lathe with a drive power of 10 KW, main spindle speeds up to 6300 rpm, and counter spindle speeds up to 7000 rpm. Equipped with two 12-slot tool turrets VDI 25, it supports up to 24 driven tools. The machine includes a Sinumerik 840D control, chip conveyor, and a bar feeder for bars ranging from 6-45 mm in diameter. Contact us for more information. Application Types Turning

Condition: excellent (used), Year of construction: 1998, functionality: fully functional, Max. turning diameter: 185 mm Max. turning length: 186 mm Spindle bore: 73 mm Max. workpiece weight: 30 kg Hedjxl Amnjpfx Abrenu Control: SIEMENS SINUMERIK 840 C Including documentation Including chip conveyor Including LNS Quick Load bar feeder

Condition: used, Year of construction: 2008, Table size 700 x 500 mm X/Y/Z - 600/500/500 mm Spindle speeds 10000rpm Spindle taper ISO 40 No. of stations in tool changer 20 Table load 500 kg Control: Fanuc 0i-MC Equipped with: 20 pcs tool holders Hodpfx Abowigfrjronu 2 pcs vices

Condition: excellent (used), Year of construction: 2019, functionality: fully functional, turning length: 300 mm, turning diameter: 200 mm, travel distance X-axis: 100 mm, travel distance Z-axis: 200 mm, total height: 1,600 mm, total length: 2,000 mm, total width: 1,000 mm, overall weight: 300 kg, Operating voltage: 230 V Frequency: 50-60 Hz Rated current: 11 A Control: EMCO EASY 2CONTROL (HEIDENHAIN TNC 640, SIEMENS SINUMERIC 840) Turning length: approx. 300 mm Center height over bed: approx. 100 mm Travel: X: approx. 100 mm Z: approx. 200 mm The machine is equipped with a tailstock, a three-jaw chuck, a special tool turret including a mobile workbench and suitable accessories. Hnsdpfxjw Ivvie Abrou

Condition: excellent (used), Year of construction: 1998, functionality: fully functional, spindle bore: 35 mm, turning diameter over bed slide: 280 mm, center height: 140 mm, turning length: 650 mm, spindle speed (max.): 2,200 rpm, spindle speed (min.): 55 rpm, swing diameter over cross slide: 170 mm, three-jaw chuck diameter: 140 mm, spindle mount: MK 3, An Emco lathe in very good condition is for sale, as can be seen in the pictures. Technical data: • Manufacturer: Emco Hnedpfoxn A Dxjx Abrsu • Type: Lead and feed screw lathe • Model: Super 11-CD • Swing diameter over bed approx. 280 mm • Over face slide: approx. 170 mm • Travel of longitudinal slide: approx. 590 mm • Travel of face slide: approx. 135 mm • Spindle bore: approx. Ø 35 mm • Speed range: approx. 55 - 2,200 rpm • Centre distance: approx. 650 mm • Centre height: approx. 140 mm • Four-jaw chuck: Röhm 140 mm • Multifix size A • Year of manufacture: 1998 • Condition: Very good, functional The machine is considered one of the most precise and high-quality compact lathes ever built for teaching and hobby use. Shipping costs by freight forwarder: approx. £150 (within the UK) You will receive an invoice with VAT shown separately. Viewing/collection is possible by arrangement in 42855 Remscheid. Sale from location 42855 Remscheid, free loading. Subject to errors in technical data and prior sale.

Condition: good (used), Year of construction: 2009, Machine used only for plastic. thry spindle 95.mm Technical data shown on picture. 27.03.2025. With machine will come another spannpfutter with possibility 80 mm. Parts shown by hand not come. Hsdeu Ibnqspfx Abrsnu

Year of construction: 2004, condition: ready for operation (used), Control Unit Brand SIEMENS Model Sinumerik 840D Main Drive Number of spindles 2 Spindle speed range 6300 Spindle motor power 10 KW Number of axis 4 Table Number of tslots 12 Turret Number of turrets 2 Tool taper VDI 25 Media Chip conveyor Yes Additional Equipment Oil mist separator 2 coolant pumps for spindle flushing 2 high-pressure coolant pumps (10 bar) Parts ejector with flushing through counter spindle Bar feeder This 4-axis EMCO TURN 332 MCPlus was manufactured in 2004. It features a CNC lathe with dual spindles capable of speeds up to 6300 and 7000 rpm respectively, and two 12-slot tool turrets. Includes high-pressure coolant systems, a chip conveyor, and a bar feeder for efficient operation. Ideal for precision turning tasks. Contact us for more information about this machine. Hnjdpfxexmby Ao Abrsu Application Types Turning

Year of construction: 1998, condition: ready for operation (used), Swing diameter over bed/cross slide: 430mm/210mm, distance between centers: 510mm, travel X/Z: 160mm/310mm, spindle speed: 6300rpm, rapid traverse: 20m/min, tool positions: 12, tool holder: VDI30. Machine dimensions X/Y/Z: approx. 2250mm/2000mm/2000mm, weight: approx. 2600kg, control: Fanuc Series 21-T, operating hours: approx. 40000h. The hour counter was reset after each repair. The machine has electronic issues that cause sporadic system failures. An on-site inspection is possible. Hnedpfx Aexmkcaebrsu

Condition: good (used), Year of construction: 1997, functionality: fully functional, feed length X-axis: 450 mm, feed length Y-axis: 300 mm, feed length Z-axis: 350 mm, 3-axes digital read out horizontal and vertical milling spindle quill Technische Daten / technical details: Längsweg X / X-travel longitudinal 450 mm Hjdswyit Hjpfx Abrsnu Querweg Y / Y-travel cross 300 mm Senkrechtweg Z / Z-travel vertical 350 mm Tischgröße / table size 800x400 mm Spindelaufnahme / spindle taper SK40 Drehzahlbereich / spindle speed 50-2500 UpM /rpm Vorschubbereich / feed range 8-400 mm/min. Antriebsleistung / power capacity 3,2 kW Gewicht der Maschine / weight 1500 kg Technische Daten, Zubehör und Beschreibung der Maschine sind unverbindlich - Technical data, accessories and description of the machine are not binding.

Condition: excellent (used), Year of construction: 2017, functionality: unexamined, machine/vehicle number: 173902, travel distance X-axis: 300 mm, travel distance Y-axis: 300 mm, travel distance Z-axis: 300 mm, total height: 1,500 mm, total width: 1,100 mm, total length: 1,400 mm, table width: 200 mm, table length: 600 mm, rotational speed (max.): 2,200 rpm, rotational speed (min.): 80 rpm, overall weight: 800 kg, input current: 16 A, - Operating voltage: 3 x 400 V - Frequency: 50 – 60 Hz Hnedpfx Abjwdnz Djrsu - Number of table slots: 4 - Tool holder: SK 30 EQUIPMENT: - Three-axis digital readout (Heidenhain) - Collet set included

Condition: used, Year of construction: 1995, Technical details: Hjdpfsvbhcdjx Abrjnu x-travel: 600 mm y-travel: 400 mm z-travel: 400 mm table surface area: 800 x 400 mm range of revolution per miute: 63 - 3150 / 18 step U/min feed continuous: X/Y/Z: 8 - 800 / 8step mm/min. spindle taper: SK 4 spindle head swivable left - right: 90 ° quill stroke: 105 mm total power requirement: 5,3 kW weight of the machine ca.: 2245 kg machine dimensions LxWxH: 2,1 x 2,8 x 1,9 m Control screen replaced with new LCD. The milling machine is equipped with measuring system with digital display PROTOTRAK MX2. The X and Y axes can run cycles. (interpolation), the Z-axis is moved manually. Spindle with right/left travel Automatic tool clamping via control command Coolant device (without container) Chip collection tray Tool accessories (comparable in the photo) *

Condition: used, Year of construction: 2003, Emco lathe enco Turn 420 MC with bar loader condition see pictures Hjdounzgrjpfx Abrjnu

Condition: ready for operation (used), Year of construction: 2019, Control Unit Brand SIEMENS Model Sinumerik 828D Main Drive Spindle speed range 10–5000 Hsdpfxoxnr Hvo Abronu Number of axis 3 Movement X-Axis Movement 450 mm Y-Axis Movement 350 mm Z-Axis Movement 400 mm Tools Type of tool holder SK40 This 3-axis EMCO Emcomat FB-450 MC was manufactured in 2019. It features a travel range of X450/Y350/Z400 mm, a fixed angle table of 800x400 mm, and a table load capacity of 450 kg. The spindle speed reaches up to 5000 rpm, complemented by a rapid traverse of 5000 mm/min. Includes a Sinumerik 828D interface with multi-touch display and a comprehensive 3-axis control package. If you are looking to get high-quality milling capabilities consider the EMCO Emcomat FB-450 MC machine we have for sale. Contact us for more information. Application Types Milling

Condition: excellent (used), Year of construction: 2019, functionality: fully functional, travel distance X-axis: 300 mm, travel distance Y-axis: 300 mm, travel distance Z-axis: 200 mm, mount diameter: 30 mm, total height: 1,800 mm, total width: 950 mm, total length: 2,000 mm, table width: 120 mm, table length: 420 mm, Operating voltage: 230 V Frequency: 50 – 60 Hz Rated current: 2.8 A Control: EMCO EASY 2 CONTROL (HEIDENHAIN TNC 640, SIEMENS SINUMERIC 840) Tool holder: presumably SK 30 Max. tool clamping length: 35 mm Table dimensions: 420 x 120 mm With 2 T-slots and a special EMCO vise Jaw width: 60 mm Travel paths: X: approx. 300 mm Hnsdpfx Aew Ivu Eobrsu Y: approx. 300 mm Z: approx. 200 mm Includes matching mobile workbench with various compatible contents Includes 7-position tool changer, collets, and various suitable tool holders

Condition: ready for operation (used), Year of construction: 2005, operating hours: 25,217 h, General Data Measurements width 3400 mm Measurements depth 2550 mm Measurements height 2300 mm Machine weight 8500 kg Control Unit Brand SIEMENS Model 840D Main Drive Number of spindles 2 Spindle speed range 5000 Movement X-Axis Movement 280 mm, X-Axis Rapid Traverse 24 m/min Y-Axis Movement 100 mm +/-50 mm Y-Axis Rapid Traverse 10 m/min Z-Axis Movement Z/Z2/Z3=900/750/750 mm Z-Axis Rapid Traverse 30 m/min Workpiece Workpiece X 744 mm Table Tslots size VDI40 Turret Number of turrets 2 Number of tool slots 12 Motorized tools VDI40 stations (both upper and lower turret) Media Power consumption 46 kVA Internal cooling Yes General Data Measurements width 3400 mm Measurements depth 2550 mm Measurements height 2300 mm Machine weight 8500 kg Control Unit Brand SIEMENS Model 840D Main Drive Number of spindles 2 Spindle speed range 5000 Hodexfcrdepfx Abrenu Movement X-Axis Movement 280 mm, X-Axis Rapid Traverse 24 m/min Y-Axis Movement 100 mm +/-50 mm Y-Axis Rapid Traverse 10 m/min Z-Axis Movement Z/Z2/Z3=900/750/750 mm Z-Axis Rapid Traverse 30 m/min Workpiece Workpiece X 744 mm Table Tslots size VDI40 Turret Number of turrets 2 Number of tool slots 12 Motorized tools VDI40 stations (both upper and lower turret) Media Power consumption 46 kVA Internal cooling Yes This 7-axis EMCO HYPERTURN 665 MC PLUS lathe was manufactured in 2005. It features twin spindles, twin turrets, and a maximum turning diameter of 600 mm. Equipped with a SIEMENS 840D CNC, it offers spindle speeds up to 5000 rpm and a bar passage diameter of 65 mm. Additional features include a LNS MOVE bar loading magazine, high-pressure coolant system, and air-conditioned control cabinet. For more information about this lathe, please reach out to us. Application Types Turning

Year of construction: 2003, condition: ready for operation (used), General Data Machine weight 2100 kg Control Unit Brand FAGOR Hnodjxirfbspfx Abrsu Model 8055 Main Drive Spindle speed range 3000 rpm Spindle motor power 11-15 kW Spindle bore 52 mm Movement X-Axis Movement 220 mm X-Axis Rapid Traverse 5 m/min Z-Axis Movement 1000 mm Z-Axis Rapid Traverse 5 m/min Tail Stock Pinol diameter 52 mm Pinol tool taper 4 N Additional Equipment Total Installed Power: 13 kW This EMCO EMCOMAT-E 200X1000 was manufactured in 2003. A robust horizontal turning machine featuring a FAGOR 8055 CNC, it offers a spindle speed of up to 3000 rpm and a spindle power of 11-15 kW. The machine handles a maximum diameter of 400 mm above the bed and 220 mm over the slide, with a center height of 200 mm. Contact us for more information about this machine. Application Types Turning