Used Geminis Scnc-870-Dc for sale (3,701)

Condition: used, Year of construction: 1990, turning diameter 870 mm turning length 3000 mm control Siemens type 810 mm bed width 620 mm turning diameter over slide 560 mm 3 jaw chuck Forckrath 630 mm type 3KTN 630 The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. Djdpfx Aoyutwdjptswb We look forward to your visit. Your Markus Hirsch Team

Condition: good (used), Year of construction: 1990, functionality: fully functional, Controller: Fanuc O-TF Max. Machning diameter: 1000 mm Max machining length: 2000 mm Spindle passage 104 mm Universal 3-bk – 500 mm Universal 4-bk – 900 mm Djdpfxeurf Dpo Aptewb Machine weight: 11000 kg.

Condition: excellent (used), turning diameter over cross slide: 580 mm, spindle bore: 84 mm, turning diameter: 870 mm, turning diameter over bed slide: 870 mm, Geminis lathe model GE 870 with 4000mm between centers, swing over bed 870mm, swing over cross slide 580mm, swing over gap 1100mm, gap length 340mm, speeds from 13-1000rpm, spindle bore diameter 84mm, equipped with a 3-jaw chuck diameter 315mm, independent 4-jaw chuck diameter 800mm, fixed steady rest, the lathe is generally in very good condition. Dwsdpfxoy Swmrj Aptob

Condition: excellent (used), functionality: fully functional, turning diameter over cross slide: 580 mm, spindle bore: 104 mm, turning diameter: 870 mm, turning diameter over bed slide: 1,150 mm, Geminis GE 870 S lathe, with a 4000mm center distance, featuring a complete cast iron bed, dimension display, 870mm swing over the bed, automatic feed on the carriage, rapid traverse on the slides, a quick-change tool turret, 580mm swing over the cross slide, 1100mm swing over the tailstock, 340mm tailstock length, and speeds ranging from 16-1250 rpm. The spindle bore diameter is 104mm. It is equipped with a 3-jaw chuck with a 400mm diameter and a quick-centering mechanism, as well as a 4-jaw independent chuck with an 800mm diameter. It also includes 2 fixed steady rests and an additional universal 3-jaw chuck with a 315mm diameter. The main motor has a power rating of 18.5 kW. Overall, the lathe is in very good condition. Dodpszmp Hksfx Aptowb

Condition: good (used), turning diameter over cross slide: 870 mm, spindle bore: 162 mm, turning length: 3,000 mm, turning diameter: 870 mm, center width: 3,000 mm, Distance between centres: 3000 mm Swing: 870 mm over bed, 560 mm over cross slide Weight between centers: 3.600 kg without steady 4.400 kg with 1 steady 5.600 kg with 2 steadies Spindle speeds: 0 - 900 Rpm Spindle bore: 162 mm CNC Controller: Fagor Featured with: - Additional chuck at back end of main spindle (oilcountry) - 1 fixed steady Ø420 mm - 1 moving steady - 4-jaw chuck Ø800 mm - 3-jaw chuck Ø 400 mm Dwedpfx Ajw Sm U Deptjb - 10 Toolholders - Coolingpump/chiptray at back end - Machine documentation Country of origin: Spain Motor power: 30 kW Machine weight: 9.000 kg Machine LxWxH: 5,1 x 2,4 x 2,0 mtr.

Condition: used, functionality: fully functional, turning diameter over cross slide: 580 mm, spindle bore: 82 mm, turning diameter over bed slide: 870 mm, overall weight: 4,000 kg, spindle mount: MK 5, Conventional Lathe Brand: Geminis Model: GE 870 Power: 12.5Hp Distance between centers: 4,000mm Maximum swing over bed: 870mm Maximum swing in gap: 1,100mm Maximum swing over carriage: 580mm Gap length: 340mm Spindle bore: 82mm Speeds: 18 (16-1250) Carriage width: 620mm Tailstock: Morse taper 5 Includes: - 3-jaw chuck 310mm with internal, external, and soft jaws - Faceplate 700mm - Steady rest (closed type) 360mm - DIN backplate for 330mm chuck Dwedpfxoyc Rylj Aptjb - Main faceplate / accessory 500mm - Various gears for different thread types Weight: 4,000kg

Condition: ready for operation (used), Year of construction: 2014, spindle speed (max.): 1,400 rpm, travel distance X-axis: 500 mm, travel distance Z-axis: 2,000 mm, number of axes: 2, Horizontal turning machine manufactured in 2014. This Geminis GT5 G2-1000x2000 features a maximum swing over bed of 1000 mm and a spindle speed of up to 1400 rpm. It also has a distance between centers of 2000 mm and a main spindle hole diameter of 104 mm. If you are looking to get high-quality turning capabilities, consider the Geminis GT5 G2-1000x2000 machine we have for sale. Contact us for further details. • Distance between centers: 2000 mm Dwodpfx Apjzzdwgjteb • Height centers: 500 mm • Max swing over bed: 1000 mm • Max swing over slide: 680 mm • Main spindle hole diam: 104 mm Technical Specification Counter Spindle No Driven Tools No

Condition: new, functionality: fully functional, Year of construction: 2026, control type: CNC control, actuation type: hydraulic, controller manufacturer: Siemens, controller model: Smart Line, number of rollers: 4, roller (bottom) diameter: 190 mm, roller (top) diameter: 210 mm, side roll diameter: 180 mm, sheet thickness (max.): 8 mm, sheet thickness steel (max.): 8 mm, power: 11 kW (14.96 HP), input voltage: 400 V, number of digital displays: 1, warranty duration: 12 months, Equipment: documentation/manual, emergency stop, DIGIMA W12-8x3200 Hydraulic Four-Roll CNC Plate Rolling Machine The DIGIMA W12-8x3200 is a hydraulic four-roll CNC plate rolling machine designed for accurate, repeatable and efficient sheet-metal forming. With a working width of 3200 mm, it is suitable for producing large cylindrical parts, sleeves, pipes, curved sections, housings, tanks and other technical components used in metalworking, steel construction, ventilation, machinery manufacturing and industrial production. The four-roll system provides a major advantage over conventional three-roll machines. The sheet is held securely between the upper and lower rolls, while the two side rolls perform the pre-bending and rolling operations. This arrangement allows both edges of the sheet to be pre-bent without removing and turning the workpiece, reducing handling time and limiting the length of straight sections left at the ends. The result is improved repeatability, higher productivity and more consistent part geometry. The W12-8x3200 can roll sheet metal up to 8 mm thick and perform pre-bending up to 6 mm. Its 3200 mm working length enables the processing of wide sheets for both one-off jobs and series production. The upper roll has a diameter of 210 mm, the lower roll 190 mm, and the side rolls 180 mm. The minimum rolling diameter is 400 mm, allowing the machine to produce a wide range of cylindrical and curved components. The hydraulic drive ensures smooth, stable movement and reliable clamping force throughout the forming process. The 11 kW motor provides the power required for regular industrial operation, while the rolling speed of 4 m/min supports efficient production without compromising process control. The rigid machine body and carefully arranged roll system help guide the material accurately and reduce unwanted deformation. Computerised CNC control makes the machine convenient to set up and operate. The operator can control roll movements, monitor the forming process and reproduce previously established settings for recurring jobs. This is especially useful in batch production, where the same diameter, radius and dimensions must be achieved repeatedly. The control panel also helps reduce setup time and simplifies everyday machine operation. Dwjdpoznw T Uofx Aptsb The operating sequence is straightforward. First, the sheet is inserted and stabilised between the rolls. The side rolls then pre-bend the sheet edges, minimising flat ends. Finally, the material is passed through the roll system until the required tube, sleeve, arc or cylindrical shape is obtained. The machine can also be used for forming conical components by applying a controlled inclination of the rolls. Thanks to its wide working capacity and computer-controlled operation, the machine can be used in flexible workshop production as well as organised manufacturing processes. It is suitable for companies producing ventilation ducts, structural elements, machine covers, tanks, steel sleeves and custom-made components. Repeatable CNC settings are particularly valuable when several identical parts must be formed with the same diameter and curvature.

Condition: excellent (used), Year of construction: 2015, functionality: fully functional, spindle bore: 162 mm, travel distance X-axis: 450 mm, travel distance Y-axis: 4,200 mm, total height: 2,900 mm, total length: 8,200 mm, total width: 3,200 mm, workpiece weight (max.): 2,500 kg, overall weight: 24,000 kg, distance table center to spindle nose: 4,200 mm, CNC Lathe with c-axis GEMINIS - GHT-4 MACH-ID 9802 Make: GEMINIS Type: GHT-4 Control: FAGOR 8065T Year: 2015 Full C-Axis 360.000 Driven tools Axiaal & Radial  Driven tailstock  Steady rest C-Type Front chuck with 180 bore Rear chuck with 180 bore 3 guide way bed width 750 mm Max. turning Ø: 800mm Dedpfx Apjzx Swcjtewb X-Axis: 450mm Z-Axis: 4200mm Spindle bore: 162mm Speedrange: 900Rpm ATC / revolver: 8 Speed live tools:3000Rpm Power live tools:7.5kW Control: FAGOR 8055 Chip conveyor: Yes Pinole taper: 5Mk Stroke pinole: 250mm Workpiece load: 2500 Length: 8200mm Width: 3200mm Height: 2900mm Weight: 24000kg 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: good (used), Machinery from honey processing factory. DC Norris hotrooms, DC Norris settling tanks, DC Norris holding tanks, crystallised tanks, super seed tanks, pump, filter sets, various filling lines to fill squeezy bottles, glass jars and plastic buckets. Dwodpfx Apepcibmjtjb

Condition: excellent (used), Year of construction: 2007, Manufacturer: GEMINIS Model: GHT5 G2 1000 x 3000 Djdpfx Ajwgmz Ueptewb Cnc : SIEMENS 810 D Year : 2007 Distance between points : 3000 mm Max. Swing over bed : 1000 mm Max. Swing over saddle : 680 mm Main shaft hole diameter : 104 mm Turning speed : 1400 rpm Main motor : 37,5 kw Cross slide travel : 8m/min Tailstock quill diameter : 140 mm Quill traverse : 300 mm Bed width : 550 mm Machine equipped with : a 4-jaw chuck, 800 mm diameter

Condition: good (used), Technical data for the pallet racking upright: Racking system: Hovuma Dwedpfxskwdd Eo Aptjb Included in delivery: 01x Pallet racking upright, used Material color: cream white Profile dimensions: 85 x 50 x 17 x 3.0 mm Profile type: C 808 S275 Includes cross and diagonal braces, Base plates The uprights are pre-assembled (welded frame) 6,640 mm high 870 mm deep

Condition: new, Year of construction: 2026, functionality: fully functional, input voltage: 400 V, input current: 380 A, type of input current: three-phase, pressing force: 40 t, stroke length: 100 mm, operating speed: 9 mm/s, reverse speed: 80 mm/s, table length: 1,320 mm, table height: 290 mm, throat depth: 180 mm, ram plate length: 500 mm, clearance between the columns: 900 mm, retraction force: 40 t, total length: 1,500 mm, total width: 1,300 mm, total height: 1,800 mm, overall weight: 1,500 kg, controller model: Estun NC E21, motor manufacturer: Siemens, Equipment: CE marking, documentation/manual, hydraulics, safety light barrier, The Digima WCY-40T/1320 hydraulic press brake is a compact and robust machine designed for the precise bending of sheet metal and smaller metal components. Its space-saving dimensions make it an excellent choice for metalworking workshops, manufacturing plants and companies producing enclosures, guards, panels, profiles and various technical components. Dedpfjzlqkuex Aptowb The machine provides a nominal pressing force of 400 kN, equivalent to 40 tonnes, and a working-table length of 1,320 mm. The distance between the columns is 900 mm, the throat depth is 180 mm, the ram stroke is 100 mm, and the maximum open height is 290 mm. The back gauge offers an adjustment range of up to 500 mm, enabling the sheet to be positioned accurately before bending. The Digima WCY-40T/1320 is equipped with an Estun E21 NC control system, which controls the position of the back gauge on the X axis and the working position of the Y axis. The controller includes an operation counter, intelligent positioning, screw-backlash compensation and a function that retains the programmed position after the power supply has been switched off. A positioning resolution of 0.1 mm or 0.01 mm supports accurate and repeatable production. The press brake is powered by a 3 kW Siemens main motor. Its hydraulic system uses Bosch-Rexroth components and a Sunny hydraulic pump, while the electrical system includes Schneider Electric components. PARKER seals and guide rings increase the durability of the working mechanisms and support reliable operation during intensive daily use. The ram approach and return speeds are 80 mm/s, while the working pressing speed is 9 mm/s. These parameters enable efficient machine positioning and smooth bending operations. The rigid monoblock steel frame is welded and heat-treated to provide high structural stability and resistance to deformation under load. The machine is equipped with side guards, a front safety curtain, protection against excessive hydraulic pressure and high oil temperature, motor overload protection, electrical leakage protection and a safety relay. The electrical cabinet has an IP65 protection rating, and the press brake is CE-certified. The standard equipment includes bending tools, two front material-support arms, a foot-control pedal, foundation bolts, spare sealing rings and mechanical and electrical documentation. The upper punch features an 86° working angle and an R0.5 tip radius, while the multi-V lower die allows the operator to select a suitable bending position according to the type and thickness of the material. The Digima WCY-40T/1320 is a practical, user-friendly and economical press brake for companies requiring a reliable machine for the everyday processing of small and medium-sized components. Its combination of a 40-tonne pressing force, a 1,320 mm working length, NC control and high-quality branded components makes it suitable for both one-off projects and small batches of repeatable parts.

Condition: new, Year of construction: 2015, functionality: fully functional, machine/vehicle number: 4021234A15516315, input voltage: 400 V, input current: 350 A, input frequency: 50 Hz, ABB DCS402.0350 REV.B.3 DC Drive / DC Converter – 350A Original ABB DC Converter Module in original ABB packaging. Manufacturer: ABB Automation Products GmbH Type: DCS402.0350 REV.B.3 Product ID: 3ADT218333R0108 Current: 350 A DC Input voltage: 400–500 V AC Configuration: 4-quadrant regenerative converter Serial number: 4021234A15516315 Made in Germany The unit comes in its original ABB packaging with the original ABB documentation. Dwsdpfx Aozx Htreptjb An original ABB Routine Test Report – DC Converter Module dated 18.12.2015 is included. The report documents visual inspection, insulation tests and functional tests, with all listed test points marked OK. Condition: New / unused stock, original packaging. Please refer to the photos for the exact condition and scope of delivery. Delivery includes: 1 × ABB DCS402.0350 REV.B.3 Original ABB packaging ABB Routine Test Report / documentation Professional industrial equipment. Suitable for industrial drive applications and as a replacement unit for existing ABB DCS400 systems.

Condition: excellent (used), For sale: SEW-EURODRIVE WA20/T DT71D6/BMG/TH geared motor with a built-in 24 V DC electromagnetic brake. The unit is fully functional, tested, and ready for use. The technical condition is very good. The housing has normal signs of use in the form of minor scratches and abrasions, which do not affect the operation of the device. Technical data: Manufacturer: SEW-EURODRIVE Gearbox model: WA20/T Motor type: DT71D6/BMG/TH Power: 0.25 kW Supply: 3×230/400 V Δ/Y Frequency: 50 Hz Rated current: 1.48 / 0.85 A Motor speed: 880 rpm Output speed: 45 rpm Torque: 37 Nm Gear ratio: i = 19.50 Dwodpfxozn Npzo Aptjb Protection class: IP54 Insulation class: F Brake: 24 V DC Braking torque: 5 Nm Weight: 11.66 kg

Condition: excellent (used), For sale: SEW-EURODRIVE WA20/T DR63M6/BR/TH geared motor with a three-phase motor and a 24 V DC electromagnetic brake. The unit is fully functional, tested, and ready for operation. The technical condition is very good, with normal signs of use and minor scratches on the housing. Technical specifications: Manufacturer: SEW-EURODRIVE Gearbox model: WA20/T Motor type: DR63M6/BR/TH Power: 0.12 kW Supply voltage: 3×230/400 V Δ/Y Frequency: 50 Hz Current: 1.00 / 0.57 A Motor speed: 900 rpm Output speed: 15 rpm Dwsdpfjzn Ngasx Aptjb Torque: 32 Nm Gear ratio: i = 60.00 Ingress protection: IP54 Insulation class: F Brake: 24 V DC Weight: 9.46 kg

Condition: excellent (used), For sale: SEW-Eurodrive WA20/T geared motor with a three-phase DR63M6/BR/TH motor and an integrated 24 V DC electromagnetic brake. The unit is 100% functional, tested, and ready for operation. Before sale, the geared motor was thoroughly inspected and operates flawlessly. The motor housing has some broken cooling fins, which are clearly shown in the pictures. This damage is purely mechanical and does not affect the proper operation, performance, or reliability of the unit. Apart from that, the geared motor shows normal signs of wear and tear resulting from use. Technical specifications: Manufacturer: SEW-Eurodrive Gearbox model: WA20/T Motor type: DR63M6/BR/TH Power: 0.12 kW Supply: 3×230/400 V AC, 50 Hz Motor speed: 900 rpm Output speed: 15 rpm Gear ratio: i = 60 Torque: 32 Nm Electromagnetic brake: 24 V DC Protection class: IP54 Insulation class: F Rated current: 1.00 A (230 V Δ) / 0.57 A (400 V Y) Power factor (cos φ): 0.65 Duty cycle: S1 Weight: 9.46 kg Dedpfjznaq Njx Aptswb

Condition: excellent (used), Miyachi Unitek HF25 DC Resistance Welding System controller. The unit is fully functional, starts up correctly, the display works, and all functions respond as expected. The screen displays the message “EMERGENCY STOP – OPERATOR ACTIVATED,” which indicates that the emergency stop circuit has been activated – this is not a malfunction of the device. This model is designed for precise control of the DC resistance welding process. It features a clear display, numeric keypad, the ability to program welding parameters, and RS-232 and RS-485 communication interfaces. Power supply: 380–400 V AC, 50/60 Hz. Technical specifications: Manufacturer: Miyachi Unitek Model: HF25 Type: DC Resistance Welding System Power supply: 380–400 V AC, 50/60 Hz Max. output current: 2400 A RMS Max. open-circuit voltage: 10 V Interfaces: RS-232, RS-485 Inputs include: FOOT SWITCH, AIR VALVE DRIVER, VOLTAGE SENSE, WELD HEAD Dsdjzma Sdepfx Aptswb Condition: Fully functional. Visual condition matches the photos – normal signs of use. The power cord has been repaired (insulated area visible in the photos). The repair does not affect the operation of the device, but this information has been included for full transparency of the sale.

Year of construction: 1985, condition: refurbished (used), LATHE GEMINIS GE 650 -LENGHT 4200mm -HOLE 85mm -DIAMETER ON SLIDES 650mm Dodpsggly Sjfx Aptowb -DIAMETER ON SUPPORT 400mm

Condition: excellent (used), DCN JetCook vessel500 litre 650 litres, direct from closed Babyfoods facility. Dwodpfxjy I Di Sj Aptjb

Condition: excellent (used), Boring bar Bar diameter: 180 mm Overall length: 2500 mm Weight: 920 kg Siegfried Volz Machine Tools Rüschebrinkstr. 151-153 Dodpfx Apjum Uzgjtswb DE - 44143 Dortmund - Wambel

Condition: new, Year of construction: 2026, functionality: fully functional, workpiece weight (max.): 300 kg, travel distance X-axis: 320 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 260 mm, total height: 1,800 mm, total length: 1,650 mm, total width: 1,150 mm, wire diameter (max.): 18 mm, workpiece height (max.): 400 mm, workpiece width (max.): 580 mm, workpiece length (max.): 580 mm, type of input current: three-phase, table width: 600 mm, overall weight: 1,700 kg, table length: 600 mm, table height: 380 mm, empty load weight: 1,400 kg, warranty duration: 12 months, table load: 300 kg, input voltage: 400 V, quill travel distance: 80 mm, quill diameter: 6 mm, quill stroke: 80 mm, stroke length: 80 mm, tank capacity: 110 l, cutting speed: 600 mm/min, input current: 6 A, positioning accuracy: 2 mm, Equipment: documentation/manual, Digima DK7732 CNC EDM Wire Cut Machine – 320 × 400 mm Product Description The Digima DK7732 is a compact CNC EDM wire cutting machine designed for precise machining of small and medium-sized metal components. It is suitable for tool rooms, mould and die production, maintenance workshops, precision engineering companies, as well as single-piece and batch production. The machine provides an X/Y working travel of 320 × 400 mm, a 380 × 600 mm worktable, a maximum workpiece height of 400 mm, and a maximum permitted workpiece weight of 300 kg. Its rigid construction and machine weight of 1,400 kg help reduce vibration and support stable, repeatable machining. EDM wire cutting technology allows the machine to produce accurate contours, narrow slots, holes and complex shapes in electrically conductive materials, including hardened metals that may be difficult to process using conventional cutting tools. Main Advantages CNC-controlled EDM wire cutting machine Compact design suitable for smaller production areas X/Y worktable travel of 320 × 400 mm Large 380 × 600 mm worktable Maximum workpiece height of 400 mm Maximum workpiece weight of 300 kg Stable 1,400 kg machine construction Suitable for complex contours and precision components Designed for mould, die and tool production Suitable for single-piece and serial production Low operating energy requirements Reduced molybdenum wire consumption Suitable for long, continuous machining cycles Technical Specification Parameter Specification Brand Digima Model DK7732 Machine type CNC EDM wire cut machine Condition New Worktable dimensions 380 × 600 mm X/Y worktable travel 320 × 400 mm Maximum workpiece height 400 mm Taper capability 6° / 80 mm Maximum workpiece weight 300 kg Machine net weight 1,400 kg Machine dimensions 1,650 × 1,150 × 1,800 mm Control system CNC/MNC Movement method Linear control Control method Open-loop control Processing accuracy 0.01–0.02 mm Molybdenum wire diameter Ø0.13–Ø0.18 mm Maximum wire speed 600 m/min Maximum cutting speed 200 mm²/min Best surface roughness ≤ Ra 0.8 µm Maximum working current 6 A Rated power 2 kVA Water tank capacity 110 litres Water filtration accuracy 0.005 mm Application Electrically conductive metal materials With a stated processing accuracy of 0.01–0.02 mm, cutting speeds of up to 200 mm²/min, and a best surface finish of up to Ra 0.8 µm, the DK7732 is suitable for applications where dimensional accuracy and surface quality are important. Stable and Economical Operation The DK7732 is designed for stable processing, relatively fine surface quality, low energy consumption and reduced molybdenum wire wear. It is particularly suitable for users who prioritise economical operation and long continuous machining cycles rather than exceptionally high cutting productivity. Delivery and Availability Availability: available Estimated delivery time: approximately 90 working days Transport and installation conditions: to be agreed individually Availability and delivery information should be confirmed before placing the final order. Why Choose the Digima DK7732? Dwedpoznttdsfx Aptjb The Digima DK7732 combines a practical working range, rigid construction, high workpiece capacity and economical EDM technology. It is a suitable solution for companies looking for a compact wire cutting machine for accurate machining of moulds, dies, tools and specialised metal components.

Condition: good (used), Year of construction: 2022, Tool grinding machine, GEMINI Clottu AB-175, serial number 1949, manufactured in 2022. Dwedpfsztc Nlsx Aptsb

Condition: excellent (used), I sell in very good condition TIG welder, L-TEC 200 DC. Price given for 1pc. Dwsdpfeud R T Sjx Aptsb

Condition: used, Year of construction: 2013, Brand : GEMINIS Model : GT5 G2 1200x1000 Manufacture year : 2013 Cnc : SIEMENS 840D-SL Center height: 615 mm Swing over cross slide: 850 mm Swing over bed : 1200 mm Main spindle bore diameter: 104 mm Main spindle nose: DIN 55026-11 mm Spindle diameter on front bearing:150 mm Turning Speeds : 0-1400 rpm Spindle Ranges: 4 Dsdpfx Apszn Axiotjwb Headstock power: (S1/S6-60%) 30/37kw – (37/46kw Optional) Headstock torque: (S1/S6-60%) 4000/4850 Nm (4800/5950Nm) Guide width: 655 mm Height up to the plane guide: 800 mm