Used Chiron Mill 1250 for sale (11,150)

Condition: used, Year of construction: 2015, x-axis 1250 mm y-axis 840 mm z-axis 550 mm control Siemens 840D turning speed range - main spindle 12000 min/-1 drive capacity - main spindle 22,5 kW Torque max. 140 Nm Number of tools 24 St. max. tool length 320 mm spindle taper HSK 63 Number of working hours 56000 h spindle hours 17500 h Crjdpfox I Sh Ajx Ad Nsb weight of the machine ca. 9,7 t This machine can be viewed under power by appointment and is in our estimation in very good condition. Furnishing: - IKZ - chip conveyor - Glass measuring rods in all axes - automatic door - Swivel axis with counter bearing, Fibro There are 4 identical machines available. The machines were used for light countersinking and drilling work. Changes and errors in the technical data and information, as well Subject to prior sale!

Condition: excellent (used), Year of construction: 2015, operating hours: 14,000 h, Chiron Mill FX 800 machining center with 148-position background magazine Crodpfx Adetvz Aze Nob TECHNICAL DATA Travel, X-axis: 800 mm Travel, Y-axis: 630 mm Travel, Z-axis: 550 mm Swivel axis: +- 120 ° Rotary axis: 360° Rapid traverse speed, X-axis: 60 m/min Rapid traverse speed, Y-axis: 60 m/min Rapid traverse speed, Z-axis: 60 m/min Spindle, max. torque: 180 Nm Spindle power: 17.0 - 47.2 kW Spindle, speed: 12`000 rpm Tool holder: HSK-A 63 Rotary table, diameter: 280 mm Thread and fitting hole pattern M16 x 15 H7 X 50 Load capacity: 320 kg SCOPE OF OFFER U.A: (list not exhaustive): Chiron machining center, Year of construction: 2015 Knoll chip conveyor 750 K-1/150 BMF TPF 350S high-pressure pump Renishaw RLP40Q touch probe Receiver: Renishaw RMI-Q Mechatronic flow sensor SB0500 Background magazine, 148-fold Operating documentation Exact scope of supply according to photo gallery No responsibility is taken for the correctness, completeness and up-to-dateness of the information.

Condition: used, MAKE CHIRON MODEL MILL 800 5 axis 5 axis machininng center (milling/turning from bar) Under power in our warehouse in Gussago BS Italy Mimu Machine tools CNC Fanuc 18iMBS (5 simoultaneous axis 1*) X, Y, Z (mm) 800 – 500 - 550 Rapids (Highspeed) 60 m/min Swivelling head CNC controlled (B axis) +/- 100° Turning spindle Peiseler Milling spindle 12.000 giri / 140 Nm (v nota 2) Tools 65 Tool type HSK-A 63 DIN 69893 Tool-change time 1,5 sec (v nota 3) Table 1400x500 Max table load 1200 kgs 90fjsieew Coolant through spindle 70 bar (see note 4) CNC controlled clamping/rotating unit for 6th face machining (v. nota 5) Credpfx Aogmi Unod Nsb Pressurised linear encoders Swarf conveyor Renishaw-ready Y.O.M. 2006 Weight 7500 kgs Turning package Max dia 65mm RPM: 15 / 4500 Max 42,5 KW / 90 Nm. Hydraulic clamping 800 Nm. Bar loader ILS-RBK- 10012 65 Diameters min/max 5/65 mm L= 600-1200 mm Highspeed (2) 60m/min. Spindle ...

Condition: used, 5 axis: yes Milling and turning: yes 5 axis machininng center (milling/turning from bar) Under power in our warehouse MAKE CHIRON MODEL MILL 800 5 axis CNC Fanuc 18iMBS (5 simoultaneous axis 1*) X, Y, Z (mm) 800 – 500 - 550 Rapids (Highspeed) 60 m/min Swivelling head CNC controlled (B axis) +/- 100° Turning spindle Peiseler Milling spindle 12.000 giri / 140 Nm (v nota 2) Tools 65 Tool type HSK-A 63 DIN 69893 Tool-change time 1,5 sec (v nota 3) Table 1400x500 Max table load 1200 kgs Coolant through spindle 70 bar (see note 4) CNC controlled clamping/rotating unit for 6th face machining (v. nota 5) Pressurised linear encoders Swarf conveyor Credogph Rnopfx Ad Njb Renishaw-ready Y.O.M. 2006 Weight 7500 kgs Turning package Max dia 65mm RPM: 15 / 4500 Max 42,5 KW / 90 Nm. Hydraulic clamping 800 Nm. Bar loader ILS-RBK- 10012 65 Diameters min/max 5/65 mm L= 600-1200 mm Highspeed (2) 60m/min. Spindle 20-12.000 min.’ – 140 Nm.12.000 RPM 12,5 KW/Max 34kW Swivelling head (CNC controlled) ± 100° Low hours This machine can be inspected under power in our Warehouse Mimu Machine Tools (Italy)

Condition: used, MAKE CHIRON MODEL MILL 800 5 axis 5 axis machininng center (milling/turning from bar) Under power in our warehouse in Gussago BS Italy Mimu Machine tools CNC Fanuc 18iMBS (5 simoultaneous axis 1*) X, Y, Z (mm) 800 – 500 - 550 Rapids (Highspeed) 60 m/min Swivelling head CNC controlled (B axis) +/- 100° Turning spindle Peiseler Milling spindle 12.000 giri / 140 Nm (v nota 2) Tools 65 Tool type HSK-A 63 DIN 69893 Tool-change time 1,5 sec (v nota 3) Table 1400x500 Max table load 1200 kgs 90fjsieew Coolant through spindle 70 bar (see note 4) CNC controlled clamping/rotating unit for 6th face machining (v. nota 5) Crsdpogqg Sgsfx Ad Njb Pressurised linear encoders Swarf conveyor Renishaw-ready Y.O.M. 2006 Weight 7500 kgs Turning package Max dia 65mm RPM: 15 / 4500 Max 42,5 KW / 90 Nm. Hydraulic clamping 800 Nm. Bar loader ILS-RBK- 10012 65 Diameters min/max 5/65 mm L= 600-1200 mm Highspeed (2) 60m/min. Spindle ...

Condition: used, Year of construction: 2010, Technical details: x-travel: 800 mm y-travel: 685 mm z-travel: 630 mm c-axis: 360° (Planscheibe-Tisch) control: Siemens 840D Power Line spindle speed:: 10.500 - 20.000 U/min max. torque on the spindle: 180 Nm tool taper: HSK -A63 DIN 69893 tool changer with: 40 places no. of tables: 2 table swivelabel +/-: je 120 (a-Achse) ° table surface area: 280 x 275 mm table load capacity: 320 kg interface: RS232 spindle hours: 38.700 h Total power requirement: 37 kW dimension machine xH: 4,0 x 4,4 x 3,0 m dimensions LxWxH: Späneförderer: 2,1 x 1,05 x 1,5 m dimensions L x W x H: Kühlschmieranlage: 1,3 x 1.6 x 1,95 m 5 - axis machining center CNC machining center Clamping table for 4th and 5th axis (swivel 120° right/left/speed 50 rpm and turn with faceplate Ø 280mm/200 rpm) max. workpiece size 940 x 650mm for/on table with chip conveyor make Knoll, 750 K-1/150; year of manufacture 2009 Bürener coolant system with paper belt filter belt width 700mm; year of manufacture 2009 for both control cabinets with cooler Rittal Accessories exclusive i.D. Codpfxsytcf Uj Ad Nsrb *

Condition: ready for operation (used), Year of construction: 2004, travel distance X-axis: 6,000 mm, travel distance Y-axis: 630 mm, travel distance Z-axis: 550 mm, controller manufacturer: SIEMENS, controller model: n/a, number of axes: 4, This 3-axis CHIRON Mill 6000 SK was manufactured in 2004, featuring a high-speed motor spindle at 12,000 rpm and a travel range of X 6,000 mm, Y 630 mm, Z 550 mm. It includes a 5-axis milling package, 92 tool positions, and a Marposs collision monitoring system. Ideal for long part machining up to 6,000 mm and pendulum machining. If you are looking to get high-quality milling capabilities consider the CHIRON Mill 6000 SK machine we have for sale. Contact us for more information. Machine Benefits Technical Machine Benefits • 92 tool positions hsk-a63 (background magazine) • Long part machining up to a maximum of 6000 mm • Machining of the end face (5th side) horizontally with swivel head (right/left) • Pendulum machining via center partition, max. Workpiece length 1773 mm with sk machining on both end faces (tool length 120 mm) • 4 hydraulic double vices (fixed center jaw) per pendulum section, positioning, and clamping via linear system (hydraulic release, mechanical clamping) Extra Information Additional Equipment High-speed package with Motor Spindle: 12000 rpm, 140 Nm Production Package: Scraper belt conveyor, discharge height 1050 mm Internal coolant preparation KNOLL VRF250 vacuum rotary filter (suitable for steel, cast iron, aluminum, plastic, brass) High pressure 70 bar with HP pump and variable valve Flushing gun per pendulum field Emulsion mist extraction, 2 fans each 800 m²/h Rotating viewing window left and right (1400 mm from machine center) Automatic loading doors Crsdpfsx Nr Irox Ad Njb Center partition for pendulum machining 5-Axis Milling Package Air Blast Tool Life Monitoring Additional V24 RS232 in the control cabinet BDE/MDE interface (statuses: machine on, machine running, part counter) Marposs (Brankamp) CMS100 Collision Monitoring System 3D machine model for kinematic simulation in the CAM programming system 210 bar hydraulic power unit, 2 clamping circuits, separate system clamping pressure for each pendulum field, clamping pressure control KOHN linear clamping system 8 KOHN Multi 2000 MFS 125/680 HD hydraulic vices Two-part operator step across the entire operating width of 6000 mm With the 3 axes x, y, z and the swivel head, the software package 5-axis milling can be used to mill shapes, e.g. a curve. The software then synchronizes the axes.

Condition: ready for operation (used), Year of construction: 2003, travel distance X-axis: 2,000 mm, travel distance Y-axis: 500 mm, travel distance Z-axis: 550 mm, controller manufacturer: SIEMENS, controller model: Sinumerik, table width: 550 mm, table length: 2,600 mm, spindle speed (max.): 12,000 rpm, number of axes: 4, This CHIRON MILL 2000 Vertical Machining Center was manufactured in the year 2003. It is equipped with a Siemens Sinumerik control unit. The machine has a spindle speed of 12000 rpm. Additional equipment • Chip conveyor Machine Benefits Technical Machine Benefits • Rapid feed 40 m/min Crsdpfx Aeyi Eh Dod Nob • Tool magazine with capacity for 24 tools

Condition: ready for operation (used), Year of construction: 2007, functionality: fully functional, travel distance X-axis: 800 mm, travel distance Y-axis: 500 mm, travel distance Z-axis: 550 mm, controller model: Fanuc 18i MB5, rotational speed (max.): 20,000 rpm, TECHNICAL DETAILS Travel X-axis: 800 mm Travel Y-axis: 500 mm Travel Z-axis: 550 mm Main Spindle Type: HSK-A63 Max. speed: 20,000 rpm Turning Spindle Collet Chuck: Hainbuch SK65 BZI Max. speed: 4,000 rpm Bar capacity: approx. 65 mm MACHINE DETAILS Control: Fanuc 18i MB5 Drive power min.: 30 kVA Drive power max.: 50 kVA EQUIPMENT Tool measuring system: Blum Laser Control NT Additional magazine (92 tool stations) Coolant system / Paper band filter / High-pressure internal coolant supply (IKZ) Spindle chiller Bar feeder: Breuning RBK 10012 Inserts: 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, Max. diameter: 60 mm Cedpfjyn Ncpex Ad Njrb Please note: No oil mist extraction, no CO2 extinguishing system included. Machine disassembly will be carried out by Chiron on 24.03.2026. Chiron will also perform a data backup.

Condition: ready for operation (used), Year of construction: 2007, functionality: fully functional, machine/vehicle number: 498-56, travel distance X-axis: 800 mm, travel distance Y-axis: 550 mm, travel distance Z-axis: 550 mm, controller model: SIEMENS SINUMERIK 840 D, spindle speed (max.): 12,000 rpm, No reserve price – guaranteed sale to the highest bidder! Placing a bid obligates you to collect the item within one of the following periods: either between 11.05.2026 and 13.05.2026 or between 18.05.2026 and 21.05.2026! TECHNICAL DETAILS Travel range X-axis: 800 mm Travel range Y-axis: 550 mm Travel range Z-axis: 550 mm Csdpfx Ajym Anped Nsrb Spindle speed: 12,000 rpm Tool holder: SK 40 Number of tool stations: 40 Table dimensions: 850 mm x 350 mm MACHINE DETAILS Control system: SIEMENS SINUMERIK 840 D Chip conveyor manufacturer: KNOLL Paper band filtration system manufacturer: KNOLL Zero-point clamping system model: SCHUNK SDE 138 Dimensions & Weight Dimensions (L x W x H): 5,500 x 3,700 x 2,900 mm Machine weight: 10,000 kg EQUIPMENT Tool holders and tools on the tool changer Measuring probe Recently fitted new spindle Note: A truck with a width of 3,000 mm is required for transport. External reference: Lot 11 / Wittner

Condition: ready for operation (used), Year of construction: 2013, functionality: fully functional, travel distance X-axis: 2,000 mm, travel distance Y-axis: 685 mm, travel distance Z-axis: 630 mm, controller model: Siemens 840D, rotational speed (max.): 20,000 rpm, The machine spindle was replaced in 2022! The original purchase price of the machine was EUR 600,000! TECHNICAL DETAILS Travel range X-axis: 2000 mm Travel range Y-axis: 685 mm Travel range Z-axis: 630 mm Rapid traverse on all axes: 40 m/min Axis acceleration: 0.25 g Max. spindle speed: 20,000 rpm Max. rotary table speed: 1,000 rpm Tool changer positions: 92 Tool holder: HSK 63 NC swiveling axis: ± 100° Crsdpfx Aoymnykod Njb MACHINE DETAILS Control: Siemens 840D EQUIPMENT Remote diagnostics and teleservice Maintenance instructions displayed on screen 5-axis milling package Fixed table with integrated rotary table Kessler milling rotary table DTE 520 NC swiveling head with spindle stock Direct measuring systems Chip conveyor (hinged belt) Coolant system HL 450 / 900 (IKZ) Full-flow cleaning via paper band hydrostatic filter HL450 Coolant filtration 50 µm nominal Chip blow gun Coolant recooling unit Additional tray rinsing Machine preparation for air through spindle Work area extraction system Safety package MILL 2000 with reinforced cabin and safety glass Zero point clamping system NSL tur 570-5-Z for DTE 520 Tool breakage monitoring Measuring probe Renishaw OMP 40-2LS Rotating inspection window Chiron Power Service Siemens CNC control with OP019 19" color display Operating mode: 4 MCIS DNC for sending and receiving CNC programs in network operation Siemens tool life monitoring Measurement in JOG (zero point determination during setup in jog mode) Loading and unloading station for tools for main time parallel tool change on background magazine Additional window for background magazine Swiveling control panel for optimal visibility of the work area during setup Note: The two vices on the NC rotary table as well as the tool holders in the tool changer are not included in the offer.

Condition: ready for operation (used), Year of construction: 2004, A machining center Chiron, which was completely overhauled in 2013, is available. Travel path X/Y: 6000mm/630mm, rapid traverse: 60m/min, tool positions: 92, tool holder: HSK-A63, speed: 12000rpm, torque: 140Nm, milling axes: 5, weight: approx. 20000kg, control: Siemens S840D, operating hours: 77344h. Includes scraper belt conveyor, OKZ preparation, Knoll VRF 250 vacuum rotary filter, high-pressure pump (70bar), emulsion mist extraction (2x800m³/h), central partition for pendulum machining, hydraulic unit (210bar), and Kohn linear clamping system with 8x hydraulic vices Multi 2000MFS 125/680 HD. Documentation available. An on-site inspection is possible. Credpfx Aow Nyi Nsd Nob

Condition: ready for operation (used), Year of construction: 2007, Travel X/Y/Z: 800mm/550mm/550mm, tool holder: HSK63, spindle speed: 12000rpm, tool positions: 65, control: Siemens 840D, spindle hours: approx. 16000h. 3-axis robot System 3R Transformer WorkMaster, year of manufacture: 2008, transfer weight: 150kg, stroke: 1500mm, pallet positions: 2x12. Including System 3R GPS 240 zero-point clamping system, Knoll chip conveyor, Knoll paper band filter, Blum LaserControl laser measuring system, Renishaw 3D probe, and oil mist extraction. Documentation available. An on-site inspection is possible. Codpfx Adsxg Rigj Nerb

Condition: ready for operation (used), Year of construction: 2007, operating hours: 16,000 h, functionality: fully functional, machine/vehicle number: 259-45, travel distance X-axis: 800 mm, travel distance Y-axis: 550 mm, travel distance Z-axis: 550 mm, controller model: Siemens 840 D, spindle speed (max.): 12,000 rpm, The following automation is also being auctioned from the same location: System 3R Workpartner (Search ID: 21119877) System 3R Workpal 1 (Search ID: 21119737) System 3R Transformer Workmaster (Search ID: 21119557) TECHNICAL DETAILS X-axis travel: 800 mm Y-axis travel: 550 mm Z-axis travel: 550 mm Tool holder: HSK 63 Spindle speed: 12,000 rpm Number of tool positions: 65 MACHINE DETAILS Crsdpfx Adsyfum Uj Njb Control: Siemens 840 D Spindle hours: approx. 16,000 h EQUIPMENT Knoll chip conveyor Knoll paper belt filter Blum LaserControl laser measuring system Renishaw digital 3D touch probe Automation interface Automatic door Oil mist extraction Internal coolant supply

Condition: ready for operation (used), functionality: fully functional, travel distance X-axis: 3,000 mm, travel distance Y-axis: 630 mm, travel distance Z-axis: 550 mm, controller model: Siemens 840D solution line, spindle speed (max.): 12,000 rpm, TECHNICAL DETAILS Travel X-axis: 3,000 mm Travel Y-axis: 630 mm Travel Z-axis: 550 mm Rapid traverse speed: 60 m/min Spindle speed: 12,000 rpm Codpfx Aeyfgf Ned Norb Clamping area: 3,600 x 710 mm T-slots: 5 Number of axes: 3 Tool magazine: 40 positions Traverse path in pendulum mode per work area: 1,250 mm MACHINE DETAILS Control: Siemens 840D solution line Machine weight: 9,600 kg EQUIPMENT 24-position tool magazine Coolant system 900 l High-pressure system 30 bar Internal coolant supply tools Chip conveyor Hydraulic unit 200 bar 6 hydraulic connections for 200 bar 2 connector couplings A+B (3 per table side) Variable Chiron clamping logic Prosin Plus tool breakage monitoring for diameters > 3 mm Automatically opening and closing loading door Machine preparation for 1 x NC axis

Condition: used, Year of construction: 2014, x-travel 2000 mm y-travel 630 mm z-travel 550 mm Control Siemens 840 D total power requirement 7,5 - 22,5 kW weight of the machine ca. 10,5 t Maximum table load:1,000 kg / m table length Movement range: X-axis:2000 mm Y-axis:630 mm Z-axis:550 mm Speed range up to:12,000 min-1 Maximum speed range:140 Nm Drilling power:average 42 mm (with insert drill) Milling power:600 cm³/min Tool places:24 Tool shaft:HSK A 63 DIN 69893 Tool average:max. 75 mm Tool average with: Cjdoyan Rcepfx Ad Nerb free neighbouring places:max. 160 mm Tool length:max. 320 mm Tool weight:max. 8 kg (max. magazine load 100 kg Tool change time:approx. 1.5 s (depending on control

Condition: good (used), Year of construction: 2004, travel distance X-axis: 6,000 mm, travel distance Y-axis: 630 mm, Chiron Mill 6000 / 2013, completely overhauled by Chiron. Year of manufacture: 2004 / overhauled in 2013. Equipped with Siemens 840D control system. Travel X/Y: 6000/630 mm. Pendulum machining possible. 92-position tool changer. HSK-A 63 tool holder. Spindle speed up to 12,000 rpm. Spindle replaced in 2021. NC swivel milling head. Hydraulic unit with 210 bar. 2 hydraulic clamping circuits. Separate clamping pressure control per pendulum field. Clamping pressure monitoring. Pneumatic workpiece stop. 2 separately controllable pneumatic lifting devices. Brankamp collision monitoring system. Scraper belt conveyor. OKZ prepared. Knoll vacuum rotation filter. Rotating viewing window. Automatic loading doors. 5-axis milling package. IKZ 70 bar (internal coolant supply at 70 bar). Oil mist extraction. Pendulum machining possible. Pendulum machining X-axis travel: 1773 mm with face machining (tool length: 120 mm). Linear clamping system with 8 vices. Csdjw N Nvfjpfx Ad Nsrb

Condition: used, Year of construction: 2006, functionality: fully functional, travel distance X-axis: 2,000 mm, travel distance Y-axis: 500 mm, travel distance Z-axis: 550 mm, Chiron MILL 2000 Machining Center For sale is a Chiron MILL 2000 machining center from 2006. The machine is in good condition and ideally suited for the machining of large and long workpieces. Manufacturer: Chiron Model: Mill 2000 Year of manufacture: 2006 Technical specifications: • Travel: X 2000 mm / Y 500 mm / Z 550 mm • Spindle: 12,000 rpm HSK 63 • NC swivel head • Tool magazine: 40 positions (chain magazine) Codpfx Adsxcpy Ns Norb • Control: Siemens • Machine weight: approx. 9,600 kg Equipment: • 40-position tool magazine • Chip conveyor and coolant system • NC swivel head • High-pressure system Condition & Service: The machine is fully operational and available immediately. Loading and transport can be arranged. Location: Germany (Stuttgart area) Price: negotiable

Condition: excellent (used), Year of construction: 2013, Heidenheim TNC 530, SK 40, 12,000 rpm, 40 tool positions, through-spindle coolant, direct measuring system on all axes, central lubrication system, automatic loading doors, measuring probe, Cedpfx Asxfqyvod Nerb

Condition: used, functionality: fully functional, Miller Subarc DC 1250 Digital Welding Power Source Crodpfjy Azh Isx Ad Nob 1250A, 44V, 3-Phasefeatures digital controls

Condition: used, Year of construction: 1995, travel distance X-axis: 1,270 mm, travel distance Y-axis: 660 mm, travel distance Z-axis: 660 mm, controller manufacturer: Acramatic, controller model: 850SX, table width: 660 mm, table length: 1,370 mm, rotational speed (min.): 60 rpm, rotational speed (max.): 8,000 rpm, overall weight: 8,000 kg, spindle speed (min.): 60 rpm, spindle speed (max.): 8,000 rpm, Equipment: documentation/manual, rotational speed infinitely variable, X-axis travel 1.270 mm Y-axis travel 660 mm Z-axis travel 660 mm CNC Control Acramatic 850SX Credpjyg Et Uefx Ad Nob Table size 1.370 x 660 mm Table load 910 kg Rapid traverse X/Y/Z-axis 15.000 mm/min Spindle speeds 60 - 8.000 Rpm Spindle nose ISO 40 Distance Spindle - Table min/max 150/880 mm Toolchanger 21 positions Featured with: - Coolunit - Handwheel control - Full documentation Country of origin UK Spindle motor 9 kW Machine weight 8.000 kg Machine WxDxH 3.600 x 2.900 x 3.000 mm

Condition: new, Chiron 1122242 / 562 006 HSK-A63 coupling gripper SN: H308, unused, 100% functional, scope of delivery as per photos. Crsdpfxoy Np Ipe Ad Nsb

Condition: new, Chiron 1122242 / 562 006 HSK-A63 clamping gripper SN: 9F08 with 5721028100 / 95281 tool arm 1088539/00 CW49/15, unused, 100% functional, scope of delivery as per photos. Csdpfxsy Np Ivs Ad Nsrb

Condition: defective spare-parts repository (used), functionality: not functional, controller manufacturer: Siemens, table width: 470 mm, table length: 990 mm, overall weight: 5,500 kg, spindle speed (max.): 10,500 rpm, No reserve price – guaranteed sale to the highest bidder! Note: The machine is defective. The control system does not power up, so it requires repair or can be used as a source of spare parts. Otherwise, the machine is in good mechanical condition. TECHNICAL DETAILS Spindle speed: 10,500 rpm Table length: 990 mm Table width: 470 mm Credjy Ni Agepfx Ad Nsb MACHINE DETAILS Control manufacturer: Siemens Machine weight: 5,500 kg

Condition: used, Year of construction: 2010, Supper mini mill specs X 406mm Y 305mm Z 254mm . Max speed 10000 RPM . Power 15 HP (11.2 KW) . Taper CAT 40 / BT40 Crjdpoy D A S Dofx Ad Neb