Used Bobst Punch for sale (1,637)

Year of construction: 1993, condition: ready for operation (used), A Trumpf punching machine still in operation, including a Trumalift loading and unloading unit that has not been used for a longer period, is available. 1) CNC punching machine Trumpf TruMatic 500, year of manufacture: 1993, max. punching force: 220kN, max. sheet thickness: 6.4mm, max. workpiece weight: 150kg, max. punching diameter: 76.2mm, simultaneous motion: 108m/min, stroke rate: 900/min, machine dimensions X/Y/Z: approx. 6700mm/5800mm/2200mm, weight: approx. 11000kg. 2) Trumpf Trumalift SheetMaster 1250 loading and unloading system, year of manufacture: 1993, max. sheet dimensions X/Y: 2500mm/1250mm, max. sheet thickness: approx. 8mm. Documentation available. An on-site inspection is possible. Bljdpfx Ajyz Ap Rsl Iog

Condition: good (used), Manufacturer: LVD STRIPPIT Bljdpjv Ic Tqsfx Al Ijg Type: Global 20 FANUC Control: FANUC 180i-P Year of manufacture: 2006 Thick turret WILSON tool system Under power inspection possible Large package tooling WILSON Auto indexing rotation tools included Laser safety guids included Specifications Metric US standard Table load 150 Working area X axis 2500 mm Working area Y axis 1250 mm Working area X axis with takeover 5000 mm Punching force 20 T Max. sheet thickness 6 mm Turret positions 30 Auto index. positions 4 Positioning speed X and Y axis 4500 mm/min. Turret change speed 900 rpm Dimensions (estimate) Length 6400 mm Width 5600 mm Height 2445 mm Weight 16500 kg Please note: The information on this page is correct to the best of our knowledge and belief and, where possible, has been obtained from the manufacturer. The information is given in good faith but its accuracy cannot be guaranteed. Accordingly, it will not constitute a representation and terms of contract. We recommend that you check all important details.

Condition: excellent (used), Year of construction: 1990, machine/vehicle number: 1203697, Bros. punching press Make: Haulick & Roos Type: RVD 8/800 NS Press with adjacent console: Haulick & Ross RVD 80-800NS Eccentric press with double connecting rod with 4-fold bearing mounted eccentric shaft No: 1203697 YEAR OF MANUFACTURE: 1990 Press force: 800kN Speed: 30-300/min. Drive: 26kW Ram stroke: 4-60mm ram adjustment: 80mm Table: 800x640mm Fold-through hole: 780x60-160mm Table over floor: 1240mm Frame width: 780mm Lateral upright width: 350mm Installation height max. stroke bottom/ram top: 300mm Bodjudn Utopfx Al Islg Space required for press (LxWxH): 3200x1700x3000mm Control cabinet (LxWxH): 1800x400x 1900mm Weight: 12.000kg Reel: Eigl 2527-90 Driven: no Straightener with strap loop sensor: Eigl RST W37/300 (2528-90) Max. width: 300mm Max. Thickness: 3mm Number of rolls: 5 Feed rate: Haulick & Roos RS 260/120°/2727 Max. Feed length 260mm Max. Width 260mm Max. Max. thickness 3mm Feed speed 40m/min. Material cross-section up to 800mm?

Condition: ready for operation (used), Offered is a hydraulic punching machine: Punching force: 100tons (Tm), max. punching cross-section: 2350mm², punching capacity (standard): Ø50mm at 15mm material thickness, punching depth: 500-800mm, incl. special accessories: round punch: max. Ø80mm at 9mm, max. Ø100mm at 7.5mm, square punch: 50mm at 12mm, 60mm at 9.5mm, 70mm at 8mm, rectangular punch: max. 90 x 25mm at 10mm. Inspection possible by appointment. Bsdpfx Ajyzr Hlol Iolg

Condition: excellent (used), Year of construction: 2002, operating hours: 140 h, functionality: fully functional, travel distance X-axis: 1,250 mm, travel distance Y-axis: 2,000 mm, overall weight: 12,000 kg, Equipment: safety light barrier, CNC Punching Machine Boschert TWIN / ROTA – 2023 MANUFACTURER COMPLETE OVERHAUL – EXCELLENT CONDITION For sale is a CNC punching machine Boschert TWIN / ROTA, year 2002, which underwent a comprehensive manufacturer overhaul in 2023. The machine is in exceptional technical condition and is immediately ready for production – ideal for subcontracting or companies with short-term capacity requirements. --- 🔧 Scope of Overhaul (2023): - Complete refurbishment of all axes - New motors - New wiring - New pneumatic components - Professionally serviced hydraulic system - Control system renewed - New brush tables --- ⚙️ Equipment: - Working area: 1250 x 2000 mm - 1x punching head, 360° rotatable - 1x punching head (fixed) - 8-station Revotool, including tools - Ready for immediate use – no investment required - Only approx. 140 operating hours since overhaul --- 💡 Special Features: The machine was not just serviced but has been thoroughly modernized. All key components have been renewed or overhauled – resulting in a significantly lower failure risk compared to typical used machines. --- Bljdey A Sx Dspfx Al Isg 🎯 Ideal for: - Subcontract manufacturing - Small and medium batch production - Companies with urgent production requirements --- 📍 Inspection and test run possible by arrangement. A video of the machine in operation can be provided upon request. If you have any questions or need more information, please feel free to send us a message or give us a call. Sale is carried out under exclusion of any warranty claims. The machine is sold in its current condition (as inspected and tested). Inspection and test run are expressly encouraged.

Condition: used, Year of construction: 1994, punching force max. 50 t throat 510 mm stroke 32 mm stroke - stepless adjustable 10 - 32 mm no. of strokes 35 bei 10 mm Hub/min Working height 1070 mm daylight 350 mm table width 255 mm dimensions ca. 1080 x 650 x 1680 mm material layer 630 X 535 weight ca. 1400 kg Scraper, height-adjustable and removable, with interchangeable plate Hydraulic low-pressure finder for foot switch operation Two-stage foot switch and electrical controls Integrated hydraulic unit With punching saddle for dies no. 3 and 4, up to Ø 39.5 mm Quick-change device for punches 3 and 6 up to Ø 39.5 mm Peddinghaus blue series with material support table no. 513, dimensions 630 x 535 mm Blsdeyrhyuspfx Al Iog

Condition: used, Punching Machine MUHR & BENDER - MUBEA Model KL 350 / 203 Machine No. KL3509864 Year of manufacture: 1998 Punching force: 35 tons Throat depth: 200 mm Ram stroke: 22 mm Capacity: Ø 28 mm in 10 mm sheet (at 450 N/mm²) Ø 23 mm in 12 mm sheet (at 450 N/mm²) Ram plate: 265 x 70 mm Ram plate thickness: 25 mm outside / 50 mm in the center Table plate: 285 x 250 mm, thickness 40 mm Table cutout: 115 x 85 mm Drop-through opening in table cutout: 115 x 25 mm Installation height: 125 mm (with table and ram plate) Number of strokes: single stroke via foot switch Motor power: 1.5 kW Bsdpfoxf Utaex Al Ielg Power supply: 400 Volt, 50 Hz - Electric foot switch for stroke activation - Manual lever search device for punch movement - Special tool as punching tool Space required (L x W x H): 800 x 800 x 400 mm Weight without tool: 340 kg Weight with tool: 370 kg Good condition

Condition: excellent (used), Year of construction: 2005, Manufacturer: Helmerding Presse Press force: 5,000 kN Stroke adjustment: 97–400 mm Bodpeyz Um Uefx Al Ijlg Strokes per minute: 10–80 1/min Tool installation height: 800 mm Ram adjustment: 200 mm Ram area: 3,000 x 1,400 mm Table area: 3,000 x 1,400 mm Motor power: 90 kW Press weight: 120,000 kg Including transfer and coil line.

Condition: like new (used), Year of construction: 2022, functionality: fully functional, punching force: 18 t, working range: 2,500 mm, travel distance X-axis: 2,500 mm, travel distance Y-axis: 1,250 mm, Used Trumpf TruPunch 3000 S20 with Sheet Master Compact sheet load and unload for sale Technical data TruPunch 3000 medium format (S20) Dimensions, weights Width 6282 mm Depth 6548 mm Height 2195 mm Weight with all units 10700 kg Control, hardware, electrics Hard disk type SSD Number and size of the hard disc 2 GB x 120 GB Hard disk memory for customer programmes 10 GB Screen Touch screen Screen size 21.5 in Interface USB Network connection RJ45 Control type Bosch CML75 Operating system Windows 10 IoT Axis data X/Y/C axis drive NC-controlled, maintenance-free three-phase current servo motors Punching head drive Electric drive Maximum axis speeds - X axis 90 m/min Maximum axis speeds - Y axis 60 m/min Maximum axis speeds - Simultaneous 108 m/min Maximum axis speeds - C axis (punching) 350 rpm Maximum axis speeds - C axis (tapping) 350 rpm Maximum punching stroke rate (E = 1 mm) 800 1/min Maximum marking stroke rate 1000 1/min Precision - Positioning deviation Pa +/- 0.1 mm Precision - Position range Ps +/- 0.03 mm Precision - Smallest programmable increment 0.001 mm Working range and workpiece size Maximum sheet thickness 6.4 mm Maximum workpiece weight 150 kg Working range - X axis 2500 mm Working range - Y axis 1250 mm Bodpfxoykt N Se Al Ijlg Punch-specific data Maximum punching force 180 kN Maximum presser foot force 20 kN Maximum tool size, punching (outer circle) 76.2 mm Maximum tool size, forming (outer circle) 101.6 mm Single tool changing time 2.8 s MultiTool changing time 0.5 s Number of linear magazine stations 20 pieces Number of tools when using MultiTool / clamps 18 pieces - 180 pieces Loading / part removal Maximum part size, part removal flap, punching 400 mm x 600 mm Flap size (X x Y) 400 mm x 1250 mm Maximum part size, fixed chute, punching 180 mm x 180 mm Connected loads, ambient temperature Pressure range, compressed air connection minimum (same direction) / maximum (static) 7 bar / 14 bar Painting Main colour white, NCS S 0505-R80B Secondary colour blue, RAL DESIGN 250 20 20 Switch cabinet/periphery grey, RAL 7040 SheetMaster Compact 2500 x 1250 mm (AK05) General Maximum Y1 axis traverse speed (suction frame) 27 m/min Maximum Y2 axis traverse speed (unloading cart) 18 m/min Maximum Z axis traverse speed 20 m/min Y/Z axis drive Asynchronous motors controlled by frequency converter Loading Maximum sheet size 2500 mm x 1250 mm Minimum sheet size 1000 mm x 1000 mm Minimum sheet thickness 1 mm Maximum sheet thickness 6.4 mm Maximum sheet weight 160 kg Unloading Minimum sheet thickness 1 mm Maximum sheet thickness 6.4 mm Maximum sheet weight 160 kg Maximum stack height 190 mm Painting Main colour white, NCS S 0505-R80B Secondary colour blue, RAL DESIGN 250 20 20

Condition: excellent (used), Year of construction: 1999, Manufacturer: Müller Weingarten Press Type: HUQ 630.40 Pressing force: 6,300 kN Table area: 4,000 x 1,600 mm Ram area: 4,000 x 1,600 mm Ram stroke: 124-400 mm Ram adjustment: 200 mm Blodpfx Aleyz Shvj Isg Strokes per minute: 10-60 1/min Tool change system: tool change cart Including transfer and ARKU strip feeding line

Condition: excellent (used), Year of construction: 1993, Müller Weingarten blanking line Pressing force 5,000 kN Stroke rate 15-60. rpm Stroke 255 mm Stroke adjustment 140 mm Installation height 930 mm Table surface 4,000 x 2,500 mm Plunger area 4,000 x 2,500 mm Belt conveyor Blodpfxsyz Sg Se Al Isg Belt width 500-2000 mm Belt thickness 0.5-2.0 mm Reel load capacity 30,000 kg

Condition: excellent (used), Year of construction: 2009, functionality: fully functional, punching force: 30 t, travel distance X-axis: 2,000 mm, travel distance Y-axis: 1,250 mm, overall weight: 6,950 kg, EUROMAC PUNCHING MACHINE MOD. 1250/30 – 2000 AUTOINDEX YEAR 2009 – CE – FULLY REFURBISHED, AS NEW. Maximum punching force: 300 kN Y-axis travel with multitool: 1300 mm Y-axis travel with single punch: 1250 mm X-axis travel: 1250 x 2000 mm Automatic repositioning: Up to 10,000 mm Punch stroke adjustment: from 0.1 to 31 mm Autoindex multitool stations: 5 Rotational speed: Programmable Bljdpfxjy Dgrns Al Ijg Y + X 1250 speed: 50 m/min Y + X 2000 speed: 60 m/min Positioning accuracy: +/- 0.1 mm Clamp opening: 11 mm Maximum strokes: 300 (1/min) Maximum sheet thickness: 10 mm Maximum punching diameter: 81 mm Installed power during operation: 7.5 kW Year: 2009 CE marked machine Overall dimensions: 2000 x 4000 x h 3350 mm Weight: 6950 kg

Condition: excellent (used), Year of construction: 2002, Manufacturer: ARISA Type: S-2-630-350-FS Pressing force: 6,300 kN Table size: 3,500 x 1,450 mm Ram size: 3,500 x 1,400 mm Stroke adjustment: 25–300 mm Installation height: 700 mm Ram adjustment: 300 mm Strokes per minute: 20–70 Control system: SIEMENS S7 Including DIMECO coil line Bjdpfeyx S Iwjx Al Islg

Condition: excellent (used), Year of construction: 2001, Kaiser Punching Press Model: KSTU 4000-25-6P Press force: 4,000 kN Table size: 2,500 x 1,250 mm Ram surface: 2,500 x 1,100 mm Shut height: 700 mm Ram stroke: 40-250 mm Blodpfx Aljyx Eu Ro Ieg Ram adjustment: 200 mm Strokes per minute: 20-100 1/min Control: Siemens S7 Required space: 4.8 x 3.2 x 4.8 m (LxWxH) Weight: 78,000 kg PBK Straightening Machine Strip width: 120 - 800 mm Strip thickness: up to 6.0 mm ARKU Decoiler Load capacity: 8,000 kg

Year of construction: 2025, condition: new, Dimensions (L/W/H) 0x0x0 mm Bsdpfx Alovz Hyho Iolg Weight 100 kg Total power requirement 0 kw

Condition: refurbished (used), Year of construction: 1985, functionality: fully functional, Completely overhauled BRUDERER high-speed stamping press BSTA125 incl. new press control system Technical data: Tonnage: 1250 kN Tooling opening: 1170 mm Strokes per minute: 100–850 SPM (depending on selected stroke) Adjustable stroke: 16, 19, 26, 35, 43, 51, 58, 64, 70, 75 mm Ram adjustment range: 89 mm Tool installation height: 268–386.5 mm (depending on selected stroke) Bolster plate: 1150 x 1070 mm Ram area: 1040 x 600 mm Strip pass width: 440 mm Base plate opening: 1120 x 350 mm Strip entry height: 80–180 mm Strip feed direction: left to right Blsdpfsy D H H Ejx Al Ieg Feeder: servo feed

Condition: used, Year of construction: 1987, Mechanical high-performance stamping press for industrial serial production of stamped and formed parts. Manufacturer: Müller Weingarten AG Blodpfxsyyccbo Al Isg Type: HU2-315.25 Year of manufacture: 1987 Press force: 3150 kN Stroke: 300 mm Slide adjustment: 250 mm Strokes per minute: 15–90 min⁻¹ Machine weight: 100,000 kg Total weight: 107.8 t Individual weight G1: 91 t Individual weight G2: 5.4 t Individual weight G3: 2.4 t Individual weight G4 without coil: 7.5 t Individual weight G5 without coil: 1.5 t Machine motor power: approx. 92 kW Static foundation load: approx. 98.8 t Dynamic load on slide: 240 kN Dynamic load at cutting impact: 160 kN

Condition: used, pressing force: 250 t, Mechanical high-performance stamping press for series production of stamped and formed parts. Manufacturer: Müller Weingarten AG Pressing force: 2500 kN Drive type: mechanical Stroke: 160 mm Strokes per minute: 20–80 min⁻¹ Table size: 1000 x 1600 mm Strip width: 30–500 mm Max. coil diameter: 1800 mm Parts produced per day: 43,000 Number of parts: 50 Number of progressive dies: 50 Tool change time: 30 min Shift occupancy: 4 Total weight: 64 t Single weight G1: 48.5 t Single weight G2: 5.2 t Single weight G3: 2.3 t Single weight G4 without coil: 6.5 t Single weight G5 without coil: 1.5 t Machine motor power: approx. 77 kW Total connected load of system: approx. 183 kW Static foundation load: approx. 62 t Bodpfx Aljyyb U Ae Islg Dynamic ram load: 85 kN Dynamic cutting impact: 125 kN

Condition: used, Year of construction: 2004, sheet width 1000 mm plate length 2000 mm plate thickness 6 mm Punching capacity 280 kN Control Boschert connected load 18 kVA fuse 3 x 20 A total power requirement 15 kW weight of the machine ca. 11 t dimensions of the machine ca. 4,5 x 2,8 x 2,0 m Bljdpfx Aoyi Hpcsl Isg Multi-tool various stamps / dies Software / Dongle Metalix cncKad V10

Condition: excellent (used), Year of construction: 2006, punching force: 28 t, sheet thickness (max.): 10 mm, sheet thickness steel (max.): 6 mm, punching diameter: 105 mm, throat depth: 1,500 mm, Boschert TWIN 1500x3000 Rota-Index Quick-change tool system TRUMPF Station 1: Rotating with indexing option for Boschert Multitool Max. punching diameter 105 mm, infinitely rotatable tool Station 2: Max. punching diameter 105 mm, with option for Boschert Multitool Revotool adapter incl. 8-position tool holder Punching force: 280 kN (28 tons) Travel range: x-axis 2050 mm (repositioning up to 9999 mm) y-axis 1580 mm Throat depth: 1750 mm Tool system: Trumpf Gr1-3 (105 mm) and Boschert Revotool Labod 32060 graphic control / workshop programmable Max. sheet thickness: 6 mm (clamp opening) Max. stroke height: 90 mm, infinitely programmable upwards and downwards Table width left + right: 2250 mm each Table depth: 3250 mm Table height: 900 mm Overall width: 4900 mm Overall depth: 4800 mm Overall height: 2080 mm Drive power: 20 kVA Machine weight: 15,000 kg Hydraulic oil capacity: 160 l Color: Blue RAL5017 / Light Grey RAL7035 Year of manufacture: 2006 Bljdpfx Ajx Tp Rfol Iog Ball transfer table Slug extraction system Fast hydraulic system Very well maintained condition Comes with accessories

Condition: used, functionality: fully functional, Year of construction: 2000, sheet thickness steel (max.): 4 mm, cutting length (max.): 225 mm, Boschert Notching Machine Type LB14 Station 1 Fixed angle 90° Cutting length 225x225 mm Adjustable cutting length Cutting capacity 4 mm St40/ 3 mm V2A Bjdpfx Alowfymnj Islg Station 2 Indentation cutting 100x25 mm Adjustable cutting length Used machine in very good condition Refurbished Built in 2000

Condition: reconditioned (used), Heidelberg cutting pair for Suprasetter Bjdpfx Alsd Ay Ice Islg

Condition: good (used), functionality: fully functional, Year of construction: 2019, controller model: Rexroth IndraMotion MTX, laser type: CO₂ laser, laser hours: 980 h, laser power: 4,000 W, punching force: 22 t, Equipment: CE marking, nozzle changer, safety light barrier, Machine - C-frame - Coordinate guide - Linear magazine with 25 stations for clamps and tools - 4 x hydraulic clamps - Drives with maintenance-free three-phase motors - Repositioning system with programmable hold-down - Flap for punched parts 500x500mm incl. sensor - Foot pedal for closing clamps - FocusLine - NitroLine - FastLine - FlyLine - Additional XP and Yp axes - Ejector cylinder for laser parts - Fast flap for laser parts 500x500mm incl. sensor - Liftable laser cutting support TRUMPF Laser - TruFlow 4000 laser incl. LensLine and optimized standby - High-frequency excitation - Fine filtration of compressed air for beam tube ventilation - Closed beam guidance Cutting Head - Lens cutting head with 170mm focal length - Universal quick-change device for cutting head - LensLine - ControlLine Punching Head - Electro-hydraulic punching head - Rotatable mono-tool holder - Programmable hold-down position - Tool length compensation - Punch slug extraction - Calculation of fill level in the punching console - Stroke counter for punches - Spray lubrication for punches - Fill level monitoring for tool lubrication - Stripper position measuring system with sheet thickness measurement function Control System - TRUMPF control based on Rexroth IndraMotion - Touch panel with 19" TFT color display - Integrated technology data - Programmable cutting gas pressure - Remote Support interface - Automatic shut-off with wake-up function - Production planner Functions - PlasmaLine Data Transmission - USB interface - RJ-45 network interface - Wireless Operation Point Safety - CE marking - Two-beam safety light barrier - Monitoring system for gas pressure, temperature and cooling water - Emergency stop for drives - Warp detection - Protection against stray radiation Extended Standard Equipment: - Network installation via Remote Support - Chiller (water-air) - Compact extraction system - 1st locating pin (inside right) - 2 finished parts containers - Chip container - 40 used RTC cassettes + die plate Punch Quality Package - MultiShear - Deburring and rolling technology - Adaptive stroke calibration - StripLine Forming Package - Thread forming incl. thread former breakage control - Marking/fast beading - MultiBend - Height-adjustable clamps Bledpeyu S D Aefx Al Isg - Automatic nozzle changer - MultiTool - Engraving - Smart Punch Monitoring with sheet format detection - 4 individually openable clamps - Automatic clamp closing with mechanical sensor zero stop - Repositioning cylinder - Vibration-damped installation - Chip conveyor with tilting container - Foot pedal start incl. rear-view mirror - Brush tables with loading and unloading support - Ejector unit for small parts - CO2 extinguishing system for compact extractor - Connection piece for exhaust air duct of compact extractor MobileControl App SheetMaster (AK08) UF - Loading station with spreader magnet - Simultaneous loading and unloading during main time - Peeling system incl. positioning aid for oversize formats - Additional positioning aids for medium format - Additional positioning aids for large format - First add-on package with 9 suction cups (incl. vacuum ejector) - Unloading monitoring for laser parts - Loading of blanks GripMaster 4000 x 1500 mm SortMaster Pallet 4 pallets longitudinal ToolMaster Linear 54 stations with simultaneous tool setup during main time - Safety devices for warehouse connection incl. 2nd light barrier circuit - Warehouse interface

Condition: good (used), functionality: fully functional, Year of construction: 2008, operating hours: 41,804 h, Used TRUMPF TruMatic 6000 (K01) – Medium format Technical data: Year of manufacture: 2008 Last maintenance: 18.03.2025 Laser TrueFlow 2000 with laser power: 100-2,000 watts NC operating hours: 41,804 Resonator hours: 14,466 Beam-on hours: 2,054 Y-axis: 1,300 mm Additional equipment: various tools Recently installed new parts: Conversion to TASC5 laser control (01/2025) Control panel with display (01/2025) Bodpfx Ajwkd Efjl Iolg Box PC (01/2025) Hydraulic punching head/multilayer (10/2021)

Year of construction: 2001, condition: ready for operation (used), functionality: fully functional, punching force: 1,000 t, operating speed: 93 mm/s, stroke length: 55 mm, table length: 1,100 mm, table width: 800 mm, machine/vehicle number: 100597, TECHNICAL DETAILS Press force: 10,000 kN Table surface (W x D): 1,100 x 800 mm Stroke range: 15 - 55 mm Clearance at max. stroke: 28 - 98 mm Puzzle thickness: up to 3 mm Format width (max.): 1,100 mm Punching speeds Upwards: 47.8 mm/s Downwards: 93.7 mm/s Punching: 0.28 mm/s Hydraulic unit Type: 250 Dimensions (L x W): 1,310 x 910 mm Oil capacity: 670 l Unit weight: 1,000 kg Oil weight: approx. 550 kg Weight with oil fill: approx. 1,550 kg Automatic punching table Type: 355 Table top size (W x D x thickness): 1,000 x 700 x 10 mm Hardness: 62 HRC Surface finish: 7 MACHINE DETAILS Electrics Operating voltage: 400 V Frequency: 50 Hz Rated machine current: 50 A Incoming line protection: 63 A Control voltage: 230/24 V Rated power: approx. 30 kW Protection class: IP 54 Power requirement: approx. 8 kW Pneumatics Operating pressure: 6 bar Dimensions & Weight Puzzle disassembler dimensions (L x W x H): 3,150 x 1,620 x 2,900 mm Working height: approx. 1,700 mm Total weight: 33,000 kg Weight of puzzle disassembler: approx. 1.8 t Noise level: < 70 dB(A) Bljdey Ampdjpfx Al Ijg