Used Mori Seiki Mori Seiki Zv 400 Super Miller for sale (19,608)

Condition: new, Mori Seiki MV 40 E main spindle MV40SPU080ADA01 NEW GM4021244-009 from stock (traces of storage) Please refer to the pictures for further technical information Scope of delivery as shown Auction price is without 19% VAT and invoice The invoice will be enclosed with the shipment. The invoice will be enclosed with the shipment. Cj2Gdlmgos Express shipping also possible worldwide / Worldwide express-shipping possible. Rsdpfx Aeuxnwaenkjcd No guarantee / warranty Due to the new warranty law we are obliged to inform you of the following: Even if the goods are new or used, we sell the goods as spare parts without warranty as we often deal with used products from dismantling or insolvency goods, a warranty within the legal framework is not possible for us. Trading between traders is one way of excluding the statutory guarantee or warranty. If you have any questions, just write to us. Payment method Paypal bank Pick up by yourself You will receive information about bank details, payment methods, etc. by email Request more information PROVIDER Schneider Technik CNC 74423 Obersontheim, Germany +49 7973 ... show Last online: Last week Registered since: 2018 16 ads online Please call me back Show more SEND INQUIRY EN I am a dealer Receive offers for similar machines Send inquiry Privacy policy TELEPHONE & FAX +49 7973 ... show +49 7973 ... show print view Share Manage advertisement edit

Condition: excellent (used), Year of construction: 2008, functionality: fully functional, machine/vehicle number: NT315HF0043, Control MSX-711 (Fanuc 3Li) for 5axes simult. Spindel A2-5 40 pos. ATC type Capto C5 Bar-feeder LNS MoveS2 INVENTORY NR.2180207, MACHINE EQUIPPED WITH : Control MSX-711 (FANUC 3Li) for 5 axes simultaneous machining, color screen 15’’ and dialog system MAPPS III Memory capacity up to 1000 programs Options : tools correctors (milling spindle), B tools life gestion, input of tools correctors G10, 3 interpolations, variable thread step (G34), circular threading, personalised macro, high precision contouring control (control II contour AI), card ATA 1 GB, offset tool for 5 axes machining Chips conveyor (with chain) model/500 B-axis with direct motor (DDS) ATC type CAPTO C5/ 40 positions Tools to zero setting system with automatic arm for milling spindle High-pressure cooling system type KNOLL with 500L tank, pump and paper filtration, for cooling through spindle centre Cutting fluid coolant unit Type KNOLL Rcedpfod Hkucsx Ankjd Linear measuring system for Axes X1 / Y / Z1 Tool monitoring system through control of main spindle motor and feed motors Automatic workpiece measuring system with touch-test RENISHAW and macro B for use in Milling spindle Light signal Automatic machine stop Workpieces receptor vat Ø52mm, L120mm 10 additional M functions Flange for cylinder, threaded ring, traction tube, bore Ø 52 Clamping chuck HAINBUCH Spanntop Axzug Nova, with stop type 100 for pieces in chuck and for jobs in bars with passage, clamping head type 32, A2-5 direct mounting, adapter Hydraulic chuck KITAGAWA, type BB206A5, Ø170mm, A2-5 direct mounting, passage Ø52mm Bar-feeder LNS, Type Move S2 Diameter of roung bars : Ø8 – 80 mm, bars length : 700 mm – 1600 mm ; loading from the front ; longitudinal shift : 470 mm ; set of guidings Ø18-20 Ø24-26 and Ø28-30 ; pushers : 1x Ø 8 – 1x Ø 15 mm ; guiding devices for main spindle Ø 21 – 26 and 31 mm Fire extinctor through carbonic gas type Tyco KLA III with 10kg CO2 Aspiration system ELBARON RON/A 3000 D-2H with full rest

Condition: ready for operation (used), Year of construction: 2005, operating hours: 5,000 h, functionality: fully functional, turning length: 750 mm, turning diameter over cross slide: 250 mm, travel distance X-axis: 140 mm, travel distance Y-axis: 40 mm, travel distance Z-axis: 410 mm, TECHNICAL DETAILS Axis Travel X-axis travel: 140 mm Y-axis travel: +/- 40 mm Z-axis travel (1+2): 450 / 410 mm Turning Capacity Turning length: 750 mm Swing diameter over cross slide: 250 mm Turning diameter: 190 mm Distance between centers: 750 mm Maximum bar diameter: 52 mm Spindle Redpfx Ansxgglkekjcd Spindle speed (max.): 4,000 rpm Spindle bore: 91 mm Spindle bearing diameter: 95 mm Main spindle speed range: 60 - 6,000 rpm Main spindle drive power: 22 / 18.5 kW Maximum torque: 198 Nm Sub-spindle (B-axis) travel: 525 mm Feeds Feed rate X (1+2): 18,000 mm/min Feed rate Y: 6,000 mm/min Feed rate Z (1+2): 24,000 mm/min Feed rate B: 24,000 mm/min Turret Number of turrets: 2 Number of tool stations: 2 x 16 positions Square shank height: 20 mm Drill shank diameter: 25 mm Turret indexing time: 0.2 s Toolholder: VDI 30 Speed range - driven tool stations (max.): 6,000 rpm Drive power - driven tool stations: 5.5 / 3.7 / 2.2 kW Rapid Traverse Rapid traverse X (1+2): 18 m/min Rapid traverse Y: 6 m/min Rapid traverse Z (1+2): 24 m/min Rapid traverse B: 24 m/min Rapid traverse C: 400 rpm MACHINE DETAILS Control: MSX 501 Dimensions & Weight Dimensions: 6500 x 3000 x 2500 mm Machine weight: approx. 5.1 t Total power requirement: 73.9 kVA Operating hours: 5,000 h EQUIPMENT LNS bar feeder

Condition: excellent (used), With Sub-spindle With C-axis, with Y-axis With driven tools FANUC/MORI MSX 501 control Turning diameter max 190 mm Turning length -235 mm Spindle speeds 50-5'000 rpm Top turret tool holders 1+2 with 16 driven positions Bar loader FMB Turbo 8-80 Workpiece pick-up device Tool presetting device Misc. accessories MARCELS MASCHINEN CH Rodpfx Asx I A Awsnkjcd

Condition: excellent (used), Year of construction: 2007, functionality: fully functional, travel distance X-axis: 900 mm, travel distance Y-axis: 800 mm, travel distance Z-axis: 980 mm, rapid traverse X-axis: 50 m/min, rapid traverse Y-axis: 50 m/min, rapid traverse Z-axis: 50 m/min, rotational speed (max.): 8,000 rpm, spindle nose: ISO 50, number of spindles: 240, CNC MSX 701 III Travels (X/Y/Z axes): 900 / 800 / 980 mm Pallet working surface: 630 x 630 mm Pallet load capacity: 1,200 kg High-torque spindle max speed: 8,000 rpm Rapid traverse rate (X, Y, Z): 50 m/min Tool magazine capacity: 240 tools Spindle motor power (30 min / continuous): 37 / 30 kW Machine Configuration: 240-position RACK tool magazine Spindle taper DIN 69871 – ISO 50 Tool breakage detection in magazine Index table with 1° indexing FASTEMS interface, model MLS-MD Spindle speed 8,000 rpm – 37/30 kW TOOL IC SYSTEM BALLUFF interface No. 600 macro variables No. 1 load monitor No. 200 storable programs No. 512 tool life management No. 999 tool offsets No. 48 workpiece coordinate systems Data server + ATA card Rodeykpg Hjpfx Ankecd Mori Seiki scraper-type chip conveyor with drum filter MARPOSS application, model MIDA T25G, with E86N radio transmission system META pumping unit, model M 50/50, partial filtration system, 50 bar high pressure COMET drilled pallet Instruction manuals and CE Declaration of Conformity

Condition: used, Year of construction: 2010, functionality: fully functional, travel distance X-axis: 730 mm, travel distance Y-axis: 730 mm, travel distance Z-axis: 850 mm, rapid traverse X-axis: 50,000 m/min, rapid traverse Y-axis: 50,000 m/min, rapid traverse Z-axis: 50,000 m/min, nominal power (apparent): 22 kVA, controller manufacturer: MORI SEIKI, controller model: MSX-711 IV, table load: 500 kg, number of slots in tool magazine: 60, tool length: 500 mm, tool diameter: 140 mm, tool weight: 12 g, MORI SEIKI NH-5000 DCG/40 Horizontal Machining Center The MORI SEIKI NH-5000 DCG/40 is a high-performance horizontal machining center, designed to ensure exceptional precision, reliability, and continuous productivity, even for the most complex machining operations. Main features: Year of manufacture: 2010 Redowxygzopfx Ankecd CNC Control: Mori Seiki MSX-711 IV Machine weight: 12,700 kg Machine footprint (LxWxH): 4,628 x 4,952 x 3,012 mm Spindle: Spindle taper: ISO-40 Maximum speed: 14,000 rpm Spindle motor power: 18.5 / 22 kW (S1/S6) Working Capacity (axis travels): X axis: 730 mm Y axis: 730 mm Z axis: 850 mm Distance spindle center – pallet surface: 100 – 830 mm Distance spindle nose – pallet center: 100 – 950 mm Max. workpiece dimensions: Ø800 x 1,000 mm Rotary table: Dimensions: 500 x 500 mm Number of stations: 2 (with automatic pallet changer) Pallet load capacity: 500 kg Continuous table rotation: 360,000 positions Feed rates: Rapid traverse (X/Y/Z): 50,000 mm/min Working feed rates (X/Y/Z): 1 – 50,000 mm/min Tool changer: Tool taper: MAS BT-40 Shank: 90° Mori Seiki type Tool magazine capacity: 60 positions Max. tool diameter: Ø140 mm (without adjacent tools: Ø70 mm) Max. tool length: 500 mm Max. tool weight: 12 kg Equipment and accessories: Chip conveyor Coolant collection tank with wash pumps + external tank with paper filter High-pressure coolant pump through the spindle line Spindle head air conditioner and transformer Retractable tool presetting sensor Full technical documentation (manuals, electrical diagrams, CE declaration) Ideal for advanced machine shops and intensive production, the NH-5000 DCG/40 combines structural rigidity with advanced CNC technology, ensuring high-speed, high-precision machining of complex parts.

Condition: ready for operation (used), Year of construction: 2003, travel distance X-axis: 730 mm, travel distance Y-axis: 730 mm, travel distance Z-axis: 880 mm, overall weight: 13,000 kg, spindle speed (max.): 12,000 rpm, spindle motor power: 30,000 W, number of axes: 4, General Data Machine weight 13000 kg Main Drive Number of axis 4 Spindle Speed 12000 RPM Redpfx Aex Imt Tsnkscd Spindle motor power 30 kW Tool taper BT 40 Movement X-Axis Movement 730 mm Z-Axis Movement 880 mm Y-Axis Movement 730 mm This 4-axis MORI SEIKI NH-5000 40 was manufactured in 2003, featuring a robust horizontal machining centre with a spindle speed up to 20,000 rpm and a power range of 22-30 kW. It includes a versatile tool magazine with a capacity up to 180 tools and a dual-pallet automatic changer to enhance productivity. Pallet size is 500 × 500 mm, supporting a maximum workpiece height of 1,000 mm. Consider the opportunity to buy this MORI SEIKI NH-5000 40 horizontal machining centre. Contact us for more information. Application Types Milling

Condition: refurbished (used), Year of construction: 2003, functionality: fully functional, turning diameter over cross slide: 510 mm, turning length: 752 mm, turning diameter: 390 mm, spindle speed (max.): 4,000 rpm, rapid traverse X-axis: 18,000 m/min, rapid traverse Y-axis: 24,000 m/min, rapid traverse Z-axis: 24,000 m/min, feed rate X-axis: 18,000 m/min, feed rate Z-axis: 24,000 m/min, CNC Lathe MORI SEIKI ZL-2035MC – Technical Data Sheet The MORI SEIKI ZL-2035MC is a high-precision CNC lathe, ideal for advanced multi-axis turning operations, featuring dual spindles and live tool turrets. Manufactured in December 2002, it is engineered to deliver productivity and accuracy in complex machining processes. Rcedpjxd Td Usfx Anksd General Specifications Brand: MORI SEIKI Model: ZL-2035MC Category: CNC Lathe Year of construction: 12/2002 CNC Control: MORI SEIKI MSG-501 Machine weight: 5,900 kg Machine Dimensions: Length: 4,350 mm Width: 2,400 mm Height: 2,200 mm Machining Capacities Max swing over bed: Ø 680 mm Max swing over carriage: Ø 510 mm Distance between centers: 752 mm Max turning diameter: Spindle No. 1: Ø 390 mm Spindle No. 2: Ø 294 mm Max turning length: 520 mm Bar capacity: Ø 65 mm (Ø 51 mm on No. 2) Axis Travels X Axis: No. 1: 235 mm No. 2: 175 mm Z Axis: No. 1: 520 mm No. 2: 490 mm B Axis: 505 mm Main Spindle Speed: 40 – 4,000 rpm Spindle nose: JIS A2-6 Chuck diameter: Ø 210 mm Minimum programmable C axis angle: 0.001° Spindle motor power (continuous/30 min): 11 / 7.5 kW Sub-Spindle Speed: 40 – 4,000 rpm Spindle nose: JIS A2-5 Chuck diameter: Ø 160 mm Minimum programmable C axis angle: 0.001° Spindle motor power (continuous/30 min): 7.5 / 5.5 kW Tool Turrets Turret No. 1 Number of stations: 12 Driven stations: Yes Driven tool speed: 4,000 rpm Turning/boring tool dimensions: 25x25 mm / Ø 32 mm Turret No. 2 Number of stations: 8 Driven stations: Yes Driven tool speed: 3,000 rpm Turning/boring tool dimensions: 25x25 mm / Ø 32 mm Rapid Feeds X axis rapid traverse: 18,000 mm/min Z axis rapid traverse: 24,000 mm/min B axis rapid traverse: 24,000 mm/min Manual feed for X / Z / B axes: 0 – 1,260 mm/min Included Accessories 5 live tool holders and various fixed toolholders Chip conveyor Transformer Part unloading arm Coolant tank with pumps Manuals, electrical diagrams, and CE Declaration

Condition: used, Year of construction: 2001, functionality: fully functional, machine/vehicle number: 124, Price upon request Used CNC Vertical Lathe Manufacturer MORI SEIKI Model VL 55 Year of manufacture 2001 Rcodpfxewl An Ie Ankjd With MSC 518 CNC control, 12-tool turret, and chip conveyor Turning length = 653 mm Turning diameter = 550 mm X-axis = 350 mm Z-axis = 660 mm Speed up to = 2000 rpm Spindle power = 30 kW Approx. weight = 12.5 t Price upon request Specifications: Used CNC Vertical Lathe Manufacturer MORI SEIKI Model VL 55 YOM 2001 With MSC 518 CNC control, 12-tool turret, and chip conveyor Turning dia. = 550mm Turning length = 653 mm X-Axis = 350mm Z – Axis = 660 mm Speed = 2000 rpm Spindle power = 30 kW Weight approx.. = 12.5 t

Condition: good (used), functionality: fully functional, Equipment: chip conveyor, documentation/manual, For sale used Mori Seiki NHX5000 horizontal machining centre in excellent condition. Model: NHX-5000/40 Year: 2012 The machine is available on site by prior arrangement. Rcedpfx Anouf S Rzjksd Delivery parity: EXW Székesfehérvár. We can assist in disassembling and assembling the machine on request.

Condition: excellent (used), Year of construction: 2008, functionality: fully functional, MAIN SPINDLE: Spindle nose: A2-8 Main spindle drive power: 18.5 kW Max. main spindle speed: 4,000 rpm Max. spindle bore: 80 mm Max. machinable diameter: 366 mm C-axis 0.001 degree TURRET: Rcodpfx Anjx Rvgzeksd Number of positions: 12 pcs. Number of driven tools: 12 pcs. Travel X/Z axis: 280 / 785 mm Travel Y axis: +/- 50 mm Max. speed driven tools: 6,000 rpm Power driven tools: 5.5 kW TAILSTOCK: Taper: MT5 Distance between centers: 705 mm ELECTRICAL SUPPLY: Total drive: 39 kVA WEIGHT AND DIMENSIONS: Space requirements: 3,800 x 2,143 mm Machine height: 2,232 mm Machine weight: 6,100 kg ACCESSORIES: Control: MORI MSX-850 II Tool measuring device Parts removal Chip conveyor Coolant tank Tool holders and driven tools

Condition: good (used), Year of construction: 2005, B axis is with 0.001 indexing degree CTS system Fanuc based control system Please feel free to contact us for your further questions Rcodpfxenyh R Eo Anksd

Condition: excellent (used), Year of construction: 2013, operating hours: 4,300 h, functionality: fully functional, machine/vehicle number: NL 254131163, CNC controller M730BM with MAPS IV Capacity X-axis travel mm: 250 Y-axis travel mm: +/- 50 Z-axis travel: mm 795 Turning length mm: 705 Max. turning diameter mm: ø 366 Swing over bad mm: ø 920 Swing over cross-side mm: 742 Bar work capacity mm: 80 Upper turret Number of tool slots St: 12 Speed driven tools RPM: 10.000 Drive power driven tools kW: 5,5 / 3,7 (3 mm / cont) Rsdpfxjt Akire Ankjcd Main spindle Speed spindle rpm: 4,000 Drive power spindle kW: 18.5 / 15 (50% ed / cont) Chuck type: BB210 Manufacturer: KITAGAWA Spindle nose: JIS A2-8 Tailstock Tailstocktravel mm: 734 Holder: MT5 equipment Chip conveyor Tool measuring arm Foot switch for chuck or collet system Interface for bar feeder

Condition: good (used), Year of construction: 2006, spindle speed (min.): 4,000 rpm, travel distance Z-axis: 700 mm, throat depth: 300 mm, Year of Manufacture: 2006 Chuck Diameter: 8" Number of Axes: 3 Length: 500 Swing Over Bed: 300 mm Spindle Speed (RPM): 4000 Rcodpfx Aox Npv Tenked Processable Materials: Steel, Aluminum, Titanium, Graphite, Copper, Invar, Composite, Derlin, Peek

Condition: good (used), Year of construction: 1995, spindle speed (min.): 4,000 rpm, travel distance Z-axis: 250 mm, throat depth: 300 mm, Year of manufacture: 1995 Chuck diameter: 8" Number of axes: 3 Length: 250 Swing diameter: 300 mm Rjdpox Nuxgjfx Ankecd Spindle speed (RPM): 4000 Machinable materials: Steel, Aluminum, Titanium, Graphite, Copper, Invar, Composite, Delrin, Peek

Condition: used, Year of construction: 2012, Milling machines Travel distance X: 700 mm Travel distance Y :420 mm Travel distance Z: 380 mm Rodpfxsy Nxc Ne Ankjcd HSC-machines Number of axis: 3 milling machine / machining center spindle revolutions: 24000 rpm Speed range to: 24000 U/min tool changer: 38 - time input Power : 20 kW Integrated 4th axis (TSUDAKOMA)

Condition: reconditioned (used), Year of construction: 2013, functionality: fully functional, machine/vehicle number: MD060381G, type of input current: three-phase, input voltage: 380 V, ground cable length: 4,000 mm, warranty duration: 3 months, type of cooling: water, hose package length: 4,000 mm, welding current at 60% duty cycle: 500 A, welding current at 100% duty cycle: 400 A, welding current (min.): 15 A, welding current (max.): 565 A, Equipment: type plate available, For sale: Miller PipeWorx 400 565 AMP (60% 500A, 100% 400A) 380 Volt 2013 Water-cooled Pulse RMD Programma memory Elektrode option Steel + Stainless Steel weldable Refurbished, tested, and serviced. Rcedszhvukjpfx Ankod Test welding possible Including 1,0-1,2mm feed rolls, 2x PRO5000 MIG welding torches, earth work lead with clamp, gas cable, transport cart, and 3 months warranty. Test welding is possible. A video of the machine in welding condition is possible. We also deliver to countries like Spain, Germany, Austria, Lithuania, Greece and all other countries inside and outside Europe with Euro pallets per freight. All our machines have been serviced and are 100% ready to use unless otherwise indicated. The pictures above show the real machine. We can also offer you other types of machines such as: Used, New, Mig, Mag, Co2, Tig, Pulse, AC/DC, Plasma, Water-cooled, Electrode, Brands we offer: OTC, Migatronic, Lincoln, Miller, Fronius, Kemppi, Parweld, Tico, Lorch, Rehm, Selco, Carl Cloos, Cebora, Esab, Saf, EWM, Ess, Kemper. You always do business with Cjays Lastechniek itself and never with third parties.

Condition: good (used), Year of construction: 2008, Vertical CNC-Lathe Machine type: Gildemeister CTV 400 V3 Control: Sinumerik 840D powerline (XP) Rcsdpfx Anezing Uoked Year: 2008 SPECIFICATIONS X-Axis: 700 mm Z-Axis: 340 mm C-Axis Max. revolution: 3.500 rpm Spindle power: 47 kW Torque: 1.100 Nm Direktantrieb Amount of turrets: 1 Tool capacity: 12 Driven Tools: 12 Tool: VDI 50 Amount of paletts: 15 Accessories

Condition: excellent (used), Various accessories for DMG Mori NLX. 1- AWG EWS 50.60V5NLIK (Axial boring and milling head, offset axis, EWS - Varia) 2- EWS63.6032NL (Rotating, continuously adjustable swivel head) 3- 2 pcs. 17.BMT40NL (Combination holder for internal and external cooling, diameter 40 mm) 4- 2 pcs. 17.BMT50NL Rcodpfxozfh T Te Anked (Combination holder for internal and external cooling, diameter 50 mm) 5- 2 pcs. 8.BMT25NL (Cross mount, steel height 25) 6- 2 pcs. 4.BMT25NLIKX95 (Longitudinal mount, steel height 25) 7- 2 pcs. 4.BMT25NLX70 (Longitudinal mount, steel height 25)

Condition: used, Year of construction: 2001, Technical details: x-travel: 600 mm y-travel: 580 mm z-travel: 580 mm numbers of pallets: 2 pallet size:: 400 x 400 mm max. workpiece weight: 400 kg spindle taper ISO: 40 spindle speeds:: 35 - 12000 Rodpfx Anewv Tmvskjcd feed speeds: 1 - 50000 mm/min rapid speed: 50 m/min total power requirement: 25 kW weight of the machine ca.: 12 t dimensions of the machine ca.: 3,6 x 3,6 x 2,9 m with CNC SEICOS 16 M ( FANUC base ) autom. toolchanger 61-pockets pallet indexing 1° chip conveyor and coolant attachment exhauster clamping cube and diverse toolholders *

Condition: ready for operation (used), functionality: fully functional, turning diameter over cross slide: 550 mm, spindle bore: 72 mm, turning diameter: 820 mm, turning length: 2,000 mm, GURUTZPE lathe, Super AT 400/2000 model, with a 2,000 mm distance between centers, 820 mm swing over the bed, 550 mm swing over the cross slide, 1,150 mm swing over the tailstock, 140 mm spindle bore, and 24 speeds ranging from 9-500 rpm. It is equipped with a fixed steady rest and has a 3-jaw chuck with a 00 mm diameter mounted on it. Rjdpfxezbz Ans Ankscd

Condition: used, functionality: fully functional, spindle bore: 82 mm, turning diameter: 820 mm, turning length: 6,000 mm, GURUTZPE lathe model Super A, 6,000 mm between centers, swing on bed 820 mm, on carriage 550 mm, in the neckline 1150 mm, diameter of the shank 82 mm, motorized carriage, 16 speeds of 9-500 rpm, has 3 steadys . Rcsdpfx Ajv Rm Iwjnkod

Condition: ready for operation (used), functionality: fully functional, turning diameter over cross slide: 550 mm, spindle bore: 77 mm, turning diameter over bed slide: 800 mm, GURUTZPE lathe model Super AT 400/6000, 6,000 mm between points, turning on bed 820 mm, on carriage 550 mm, shaft diameter 76,5 mm, 16 speeds from 9-500rpm, has fixed rear Steady , , has 4 independent claws chuck diameter 800mm, , very good condition in general Rcedpswd D Itsfx Anked

Condition: good (used), Tool changer chain, chain magazine, tool changing system, tool magazine -The tool changer comes from CNC machining center make: Hitachi Seiki type: HC400 -Tool changer for: Hitachi Seiki type HC400, other spare parts available. -complete with: gripper arm and drive Redpodtcrqjfx Ankocd -Tool changing positions: 80 -Intake: SK40 -Dimensions: 2270/630/H1725 mm -Weight: 860 kg

Condition: used, Axis control, electronic handwheel, control unit -The electronic handwheel was removed from a CNC machining center make: Hitachi Seiki type: HC400. Other spare parts available. Rcedpfjdwc I Sox Ankjd -electronic handwheel for Hitachi Seiki type: HC400 -Dimensions: 170/120/H80 mm -Weight: 0.6 kg