Used Vertical Jig Boring Machine for sale (67,018)

Condition: refurbished (used), Year of construction: 1985, functionality: fully functional, travel distance X-axis: 1,200 mm, travel distance Y-axis: 2,000 mm, travel distance Z-axis: 700 mm, spindle speed (max.): 1,500 rpm, spindle speed (min.): 5 rpm, feed length X-axis: 1,200 mm, feed length Y-axis: 2,000 mm, feed length Z-axis: 700 mm, feed rate X-axis: 1,000 m/min, feed rate Y-axis: 1,000 m/min, feed rate Z-axis: 1,000 m/min, total width: 4,000 mm, San Rocco Horizontal Boring Machine Fully overhauled San Rocco horizontal boring machine, originating from a high-end aerospace manufacturing facility. The machine is equipped with a Siemens SINUMERIK 840D CNC control system with SIMODRIVE 611 drive technology. The machine is fitted with modern digital drive systems and is designed for high-precision multi-axis machining in continuous operation. It was fully overhauled in 2024, including brand-new telescopic covers on all axes, as well as numerous additional essential refurbishments to the hydraulic system, CNC components, hoses, seals, and related assemblies. Travels X-axis (longitudinal): 1,200 mm Y-axis (cross): 2,000 mm Z-axis (vertical / spindle axis): 700 mm Spindle Data Boring spindle diameter: 100 mm Tool interface: ISO 50 Milling spindle diameter: 185 mm Spindle axial travel: 700 mm Feeds and Rapid Traverses Automatic feeds (spindle and vertical axis): 2 × 1,000 mm/min Rapid traverse (spindle and vertical axis): 5,500 mm/min Distances Minimum spindle height above table: 0 mm Maximum spindle height above table: 1,500 mm Maximum distance from spindle nose to table center: 1,850 mm Spindle Speeds Torque range: 5 to 14 rpm Continuous power range: 15 to 1,450 rpm Number of gearbox ranges: 4 Speed ranges: 6–51 / 49–160 / 140–460 / 440–1,450 rpm Table Data Rotary table size: 1,100 × 1,300 mm Longitudinal travel: 1,200 mm Cross travel: 2,000 mm Table Feeds Automatic feeds X and Y: 1,000 mm/min Rapid traverse X and Y: 5,500 mm/min Table Rotation Continuous rotation: 30 to 100 degrees per minute Rapid rotation: 5,000 degrees per minute Drive System Siemens SIMODRIVE 611 E/R module 36/47 kW Fgjdpjx Rhlcefx Apwjg LT modules 108 A and 2 × 25 A Lifting and Transport Data Group 1 Steel bar Ø 70 mm, length 1,600 mm Steel bar Ø 70 mm, length 2,400 mm Four spacer rings for lifting slings Four steel slings Ø 22 mm Weight approx. 12,500 kg Group 2 Two steel slings, minimum Ø 18 mm Weight approx. 3,500 kg Group 3 Manual lifting Weight approx. 1,300 kg Condition The machine is in very good technical condition and can be inspected and tested under power by appointment.

Condition: used, Year of construction: 2000, x-travel 500 mm y-travel 400 mm Fsdpfozy Sibox Apwjgg z-travel 400 mm Control Heidenhain spindle tunring speed 9.000 U/min tool taper SK 40 number of tool places 16 Pos. In our assessment, the machine is in good used condition and can be inspected under power by appointment. Accessories, tools, and clamping devices shown are included in the scope of delivery only if specified in the additional information. Subject to change, errors in technical data and specifications, and prior sale.

Condition: excellent (used), Year of construction: 2017, Traverses X Y Z: 710 x 450 x 510mm, Table size 760mm x 430mm, spindle speed 8000rpm, spindle motor power 20Hp, Siemens 828D Control with Shopmill, Fodpsw U Sf Tofx Apwegg rapid feed XYZ axis 20m/min, Spindle taper BT40, 24 station ATC

Condition: good (used), Year of construction: 2008, Traverses X Y Z: 1020 x 550 x 560mm, Table 1250 x 660mm, workpiece load 1,000kgs Spindle speed 8,000 rpm, Spindle taper BT40, Fgodeu Hyuajpfx Apwog Spindle Motor 11kw, FANUC Oi-MC Control, 24 Station ATC, through spindle coolant.

Condition: good (used), Year of construction: 2010, Heidenhain 530 Control, Traverses X Y Z: 1050 X 510 X 510mm, Table 1300 X 550mm, Distance From Spindle Nose To Table 150 ~ 660mm, Maximum Workpiece Weight 1200kg, Spindle Speed 0 – 12000rpm, Spindle Taper DIN40, Spindle Motor 11kW, 30 Station ATC, Swarf Conveyor, Coolant, Low Volt Light , Fgodpfeucdvqjx Apwsg

Condition: good (used), Year of construction: 2014, operating hours: 23,500 h, functionality: fully functional, machine/vehicle number: P14ZYG488, Year 2014 with Fanuc series 31i Model B5 X/Y/Z: 500 x 400 x 330 mm 21-tool magazine with 4th axis TECHNICAL SPECIFICATIONS Table dimensions: 650 x 400 mm Maximum table load: 300 kg T-slots (3 slots, distance 125 mm): 14 mm X/Y/Z travels: 500 / 400 / 330 mm Table – spindle nose distance: 250 – 580 mm (with 100mm riser) Spindle axis – Z-axis guide distance: 380 mm Table height: 735 mm SPINDLE Spindle nose: 55 mm ISO 30 Spindle speed (standard): 100 to 10000 min-1 (opt. 24000 min-1) Acceleration time from 0 to 15000 min-1: 0.46 sec Time for reversal at 4000 min-1: 0.40 sec Maximum spindle torque (-1700 min-1): 78 Nm Continuous power: 3.7 kW (2800 – 8000 min-1) Power for 1 minute ED: 13 kW (1700-3500 min-1) Drilling capacity in steel: Ø 20 mm Milling capacity in steel: 70 cm3/min Tapping capacity in steel: M 12 Z-AXIS Ball bearing guide Fgsdpezzxk Usfx Apwjg Cutting feed (AC servomotor 1.0 kW / Nm): 1 to 30000 mm/min Rapid traverse in X, Y, and Z: 54 m/min Rapid traverse: more than 1.5G TOOL MAGAZINE Tool type: ISO 30 according to DIN 69871A or BT30 Number of tools: 21 Tool change time: 0.8 sec. 2kg / 1.2 sec. 3 kg Chip-to-chip tool change time: 1.4 sec. Maximum tool diameter: 80 mm for maximum tool length 250mm Maximum tool weight: 2kg / 3kg at reduced speed Maximum weight of the 21 tools: 22 kg or 33 kg MACHINE TABLE / X-Y AXES Ball bearing guides New high-speed Fanuc alpha i motors AC servomotor 8i 2.5kW, 8Nm Rapid traverse in X and Y: 54 m/min on 30 mm Cutting feed: 1 – 30'000 mm/min Minimum input/output increment: 0.001 mm Positioning accuracy in X/Y/Z axis: ±0.002 mm FANUC 31i-B5 NUMERICAL CONTROL: 3 axes (option for 4th and 5th axis) Simultaneous linear interpolation up to 5 axes Work time per block: 15 sec. Memory capacity: 200 programs (512 KB) RS 232C and USB interface, Ethernet interface Flashrom card reader with editing functions Manual Guide i with assistance CONNECTION Voltage: (3 phases) 400V ±5% Frequency: 50Hz ±1 Hz Nominal power: 20 kVA Compressed air: 5 bar minimum, 0.13 m3/min Fuse: 34 A min The technical details provided are given without guarantee, subject to error or omission.

Condition: good (used), Year of construction: 1999, Manufacturer: Hitachi Seiki Model: VK45 II Year of manufacture: 1999 Machine type: Vertical CNC machining center Control system: SEICOS Σ10M / A10M X-axis travel: approx. 760 mm Y-axis travel: approx. 500 mm Fjdozy Rbpspfx Apwsgg Z-axis travel: approx. 500 mm Table: approx. 1,120 × 485 mm Max. table load: approx. 750 kg Tool changer: 30 positions Spindle speed: typically up to 8,000 rpm Tool holder: SK40 Weight: approximately 6,000–6,500 kg

Year of construction: 2015, condition: used, Used TRIULZI vertical glass washing machine, TYPE VT2IS.SPA35.2600, 6 brushes, working height 2600mm, year 2015 (with tilting discharge conveyor). Fgedszycd Aepfx Apwsg

Condition: used, Year of construction: 2004, travel distance X-axis: 1,600 mm, travel distance Y-axis: 600 mm, travel distance Z-axis: 500 mm, controller manufacturer: Fanuc, overall weight: 9,000 kg, table length: 825 mm, table width: 625 mm, controller model: 21i MB, Travelling Bridge CNC Vertical Machining Centre Table size (2) 1100x600 + 850x600 mm. Number of pallets: 2 Movement x-Axis 1600 mm. Movement y-Axis 600 mm. Fgedpfx Aszavluspweg Movement z-Axis 500 mm. 4th Axis (Rotary table) NC Max table load 1200 kg Number of tools in magazine 51 pieces. Maximum spindle speed 12.000 R/pm. Tool taper DIN 69871A CNC control Fanuc 21i MB If you have any questions concerning the machine, please do not hesitate to contact us by phone or e-mail. Feel free to view our other advertisements for a complete overview of our stock.

Condition: not inspected (used), Year of construction: 1994, travel distance X-axis: 630 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 426 mm, overall weight: 6,500 kg, number of slots in tool magazine: 20, FZ18W magnum rotary indexing table, Fanuc OM control Fgsdpfezbal Iex Apwjg BT40 spindle, maximum spindle speed 8,000 RPM 20-tool changer 2 tables Nikken dividing head

Condition: used, Year of construction: 2005, functionality: fully functional, machine/vehicle number: 310B069, travel distance X-axis: 760 mm, travel distance Y-axis: 610 mm, travel distance Z-axis: 610 mm, controller model: Fanuc Series 18i-MB, overall weight: 6,500 kg, spindle speed (max.): 12,000 rpm, number of slots in tool magazine: 32, Equipment: chip conveyor, BRIDGEPORT XP3-760 Fedpfxozvf Sue Apwogg - Manufacturer: Bridgeport - Model: XP3-760 / VMC 760 XP3 - Serial Number: 310B069 - Year: 2005 - Machine Type: CNC Vertical Machining Center - CNC Control: Fanuc Series 18i-MB - Number of Axes: 3 - X-Axis Travel: 760 mm - Y-Axis Travel: 610 mm - Z-Axis Travel: 610 mm - Table Size: Approx. 890 × 600 mm - Maximum Table Load: Approx. 907 kg - Spindle Speed: 12,000 rpm - Spindle Motor Power: 25 HP / approx. 18.6 kW - Spindle Taper: BT-40 - Automatic Tool Changer: 30 tools - Tool Change Time: Approx. 4 sec chip-to-chip - Rapid Traverse X/Y: Approx. 43 m/min - Rapid Traverse Z: Approx. 36 m/min - Spindle Nose to Table: Approx. 100–709 mm - Machine Dimensions: Approx. 3,940 × 2,340 × 2,340 mm - Machine Weight: Approx. 6,580 kg

Condition: good (used), Year of construction: 2006, functionality: fully functional, CNC machining center Hedelius BC 100 P-3500 Magnum Control system: Siemens Sinumerik 840D Year of manufacture: 2006 Internal machine number: 4 Location: Netherlands Travel ranges: X-axis: 3,500 mm Y-axis: 1,000 mm Z-axis: 770 mm Clamping area: 4,150 x 1,000 mm T-slots: 5 pieces Distance between T-slots: 200 mm Table height above floor: 730 mm Table load: approx. 4,000 kg Tool holder: DIN 69871 SK 50 Tool magazine: 50 stations Spindle speed: 20 - 4,500 rpm Accessories: - Automatic door - Operating panel - Machine hood Fedpfx Aszw Dcnepwjgg - Chip conveyor

Condition: used, Year of construction: 2012, travel -x axis 1.630 mm travel -y axis 762 mm travel -z axis 650 mm control FANUC - 0I-MD Spindle speed 12.000 min -1 weight of the machine ca. 13 t Milling machining centers - vertical | DOOSAN - DNM 750 equipped with 30-way tool changer, ITC (20 bar) and chip conveyor. Fgjdpfozw N E Iex Apweg The machine only has 13.686 spindle hours. The machine video from the production plant will be shared on request. Please refer to further technical details in the attachement of the offer. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #Tags: DNM750 | DNM-750

Condition: used, Year of construction: 2004, HURCO VMX 64 X-axis travel: 1625 mm Y-axis travel: 865 mm Z-axis travel: 760 mm CNC control: Ultimax 4 table size: 1680 x 890 mm max. table load: 2000 kg Fgodpfxjwyna Se Apwsg spindle taper: SK 40 rapid traverse x/y/z: 18 / 18 / 13 m/min drive capacity – spindle motor: 15 kW tool magazine: 40 positions max. spindle speed: 10,000 rpm machine fully operational

Condition: excellent (used), Year of construction: 2003, functionality: fully functional, Equipment: documentation/manual, Deckel Maho DMC 103V Vertical Machining Center The machine is in good condition and can be inspected while powered on at any time. Technical data: Year of manufacture: 2003 Fjdpfezw U Rcex Apwegg Control system: Heidenhain TNC 426 / 43 Travel ranges: X: 1000 mm Y: 600 mm Z: 600 mm Spindle: 10,000 rpm Tool holder: SK40 ATC with 24 positions Table: 1200 x 600 mm Weight: approx. 6,750 kg Dimensions: 410 x 242 x 275 cm Accessories and options: Coolant tank Electronic handwheel with 3D path control Cooling system with compressed air Operating mode 4 Documentation

Condition: used, Mori Seiki MV45/45 machining center with Kitagawa 4th axis and 820 × 555 × 550 mm travels, equipped with a professional through-spindle coolant retrofit by Deuschle Spindelservice—rotary union through the pull stud, hydraulic tool clamping with pressure intensifier, and a dedicated 15 bar pump switched directly via M50. The entire TSC system is integrated inside the machine with no external unit. CNC CONTROL Controller: Fanuc 11M AXES X-axis travel mm: 820 Y-axis travel mm: 555 Z-axis travel mm: 550 4th axis / rotary table: Kitagawa SPINDLE Max. spindle speed rpm: 4.500 Spindle power kW (S1/S6): 7,5 / 5,5 Fjdpfxezy Svuj Apwegg Spindle torque Nm: 200 Spindle taper / interface: BT 45 COOLING Coolant through spindle bar: 15 • Through-spindle coolant (IKZ) retrofitted by Deuschle: rotary union through the pull stud, hydraulic clamping/release with pressure intensifier, own 15 bar pump switched via M50 • Approx. 75 BT 45 tool holders included, all with through-coolant passage, plus about 20 pull studs • 4th axis (rotary table)

Condition: excellent (used), Year of construction: 2016, functionality: fully functional, travel distance X-axis: 1,450 mm, travel distance Y-axis: 750 mm, travel distance Z-axis: 750 mm, DAHLIH VERTICAL MACHINING CENTRE MODEL MCV 1450 CONTROL FANUC 50 TAPER SPINDLE THROUGH SPINDLE COOLANT TABLE SIZE 1600 X 800 TRAVELS - 1450 X 750 X 750 MM Fgjdpjznm Uusfx Apwjg TABLE LOAD 2000 KGS GEARED HEAD SPINDLE MOTOR 15 KW ATC MACHINE WEIGHT 14.5 TON

Condition: excellent (used), Year of construction: 2017, functionality: fully functional, CNC machining center Hedelius T7 – 2600 1 R including standby magazine Control system: iTNC 640 Year of manufacture: 2017 Internal machine number: 68 Travel distances: X-axis vertical/horizontal 2,600 / 2,030 mm Y-axis 750 mm Z-axis vertical/horizontal 695 / 800 mm Swivel range: -98° to +98° Swivel operation: 760 / 1,300 mm Total clamping area 3,080 x 750 mm Table load: approx. 2,500 kg Integrated rotary table Ø 750 mm Interference circle diameter 1,100 mm Tool holder: SK 40 Tool magazine: 33-position Standby magazine: 180 pieces Celox motor spindle: 50 - 12,000 rpm Power: 29 kW Equipment: - KinematicsOpt TNC640 - Handheld control unit HR 510 - Compressed air nozzle on the spindle head - Internal compressed air supply - Inclined bed coolant system 900 l - Internal coolant supply (IKZ) 25 bar - Infrared receiver M & H Fgedpfszwut Dsx Apweg - 3D infrared measuring probe M & H 25.50 - Exhaust filter - Blow-off guns - Flushing guns

Condition: like new (used), Year of construction: 2012, operating hours: 4,541 h, functionality: fully functional, machine/vehicle number: SN:79004, travel distance X-axis: 1,035 mm, travel distance Y-axis: 540 mm, travel distance Z-axis: 620 mm, feed rate X-axis: 35 m/min, feed rate Y-axis: 35 m/min, feed rate Z-axis: 35 m/min, nominal power (apparent): 14 kVA, torque: 96 Nm, controller manufacturer: Heidenhain, controller model: TNC 620, workpiece weight (max.): 1,000 kg, total height: 2,850 mm, total length: 2,500 mm, total width: 2,910 mm, table width: 540 mm, table length: 1,200 mm, table load: 1,000 kg, rotational speed (min.): 10 rpm, rotational speed (max.): 10,000 rpm, overall weight: 5,100 kg, spindle speed (min.): 10 rpm, spindle speed (max.): 10,000 rpm, operating hours of spindle: 4,541 h, coolant supply: 3 bar, distance table to spindle center: 150 mm, spindle motor power: 1,400 W, number of spindles: 1, number of slots in tool magazine: 24, input voltage: 400 V, type of input current: AC, Equipment: documentation/manual, rotational speed infinitely variable, The machine is in excellent condition and is almost like new. It has been used almost exclusively for aluminum prototype construction. Disassembly upon request. Here are all the details from the technical description. SN: 79004, Year: 2012 Commissioned: February 2014 Fedpfx Apjzzrmpewsgg UVA 1035 PLUS Heidenhain Vertical machining center with HEIDENHAIN TNC 620 control, new price, after discount, net 79,900.00 Standard equipment of the UVA 1035 PLUS as ex works: - Computer-optimized, vibration-damping machine base made of gray cast iron - Large linear guides with 45 mm width in all axes Description Overall price - CNC control Heidenhain TNC 620 - Ergonomically arranged control panel with electronic handwheel - Digital Heidenhain drives in all axes - Ball screws (supported on both sides and preloaded) diameter 40 mm - Pitch 12 mm in all axes - Rapid traverse rate 35 m/min in all axes - Guide covers (telescopic) in all axes - Spindle taper SK 40 DIN 69871 A - Tool pull stud DIN 69872 - Main drive with 13 kW, 96 Nm - Main spindle speed range 10 - 10,000 1/min - Preparation for internal cooling 20 bar - Tool changer (dual-arm gripper) with 24 storage locations - Work area full protection with large viewing doors and 2 work area lights - Large coolant tank with 380 l capacity - 2 chip drawers for easy and quick manual chip disposal - Flood coolant 3 bar / 60 l/min - Chip flushing in the work area - Spray gun for cleaning the inside of the machine - Signal light 2-color - Festo pneumatic system - Automatic central lubrication in all axes - All axes: Positioning accuracy +/- 0.005 mm - Repeat accuracy +/- 0.003 mm (ISO 230-3) - Painting in light gray (RAL 7035) and blue gray (RAL 7031) - Documentation - UVA Unverzagt machining centers comply with the CE standard UVA 1035 PLUS Heidenhain Technical details of the machine Travel ranges Travel X-axis [mm] 1,035 Travel Y-axis [mm] 540 Travel Z-axis [mm] 620 Distance spindle bottom edge to table [mm] 150 - 770 Work table Table length [mm] 1,200 Table width [mm] 540 Number of T-slots 5 Slot width [mm] 18 Table load max. [kg] 1,000 Feed Rapid traverse X and Y axis [m/min] 35 Rapid traverse Z axis [m/min] 35 Diameter ball screw X and Y axis [mm] 40 Diameter ball screw Z axis [mm] 40 Main spindle Main spindle speed max. [1/min] 10,000 Main spindle power [S6-40% ED kW] 14 Main spindle torque max. [Nm] [S6-25%] 96 Tool holder SK 40 Tool magazine Number of tool magazine positions 24 Tool change time [sec] 2.8 max. tool diameter [mm] 80 max. tool length [mm] 300 max. tool weight [kg] 7 Coolant system Volume coolant tank [l] 380 Through coolant pressure [bar] 3 Through coolant [l/min] 60 Internal coolant supply pressure [bar] 20 (optional) Air blow external yes Basic machine data Installation area width [mm] 2,910 Installation area depth [mm] 2,500 Machine height [mm] 2,850 Weight of the basic machine [kg] 5,100 Electrical connection power [kVA] 30 Required pneumatic connection [bar] 6 Required compressed air [l/min] 260 Control Manufacturer Heidenhain Control type TNC 620

Condition: used, Year of construction: 2015, x-travel 1140 mm y-travel 710 mm z-travel 610 mm CNC-control Heidenhain TNC640 table-size 1300 x 700 mm max. table load 1000 kg spindle taper SK 40 spindle turning speed range 8.000 U/min feed stepless max. 10.000 mm/min rapid traverse 24/24/24 m/min tool change unit 30 Pos. coolant IKZ 40 bar drive capacity - spindle motor 7,5 / 11 kW Fgsdsxx A Ewspfx Apwog voltage 400 V total power requirement 25 kVA weight of the machine ca. 9,0 t dimensions of the machine ca. 3,25 x 3,08 x 3,00 m chip conveyor 4,30 x 0,80 x 1,60 m band filter unit 2,00 x 1,00 x 1,30 m coolant tank 1,30 x 1,00 x 0,60 m - Serial No.: 4P11152J1 - Machine ON: 23,320 h - Spindle ON: 5,042 h - Control: HEIDENHAIN TNC 640 - TSC 40 bar incl. 600 liter coolant tank with paper band filter unit - Y-Axis with 4 liear guide rails! - Chip conveyor - X- and Z-Axis with 6 roller supports for each axis!

Condition: used, Used machine Fsdpfjzyy Dgox Apwogg Equipment and technical data:

Condition: repair required (used), Year of construction: 2005, functionality: not functional, machine/vehicle number: 15125250184, travel distance X-axis: 2,500 mm, travel distance Y-axis: 920 mm, travel distance Z-axis: 820 mm, controller model: Heidenhain iTNC 530, spindle speed (max.): 18,000 rpm, Note: Error in the magnetic linear measuring system of the X-axis TECHNICAL DETAILS Number of axes: 3 Travel range of X-axis: 2,500 mm Travel range of Y-axis: 920 mm Travel range of Z-axis: 820 mm Fedpfx Apozu Nyaewogg B-axis rotation: 105° Table length: 3,100 mm Table width: 900 mm Table length: 3,100 mm Table width: 900 mm Tool holder: SK40 Max. spindle speed: 18,000 rpm MACHINE DETAILS Control system: Heidenhain iTNC 530 Dimensions & Weight Dimensions (L x W x H): 7,500 x 4,500 x 300 mm Net weight: 22,000 kg Transport packages: 3 EQUIPMENT External cooling Chip conveyor Tool magazine (30 pieces)

Condition: used, Year of construction: 1997, Mazak VTC-20B M+ Vertical CNC Machining Centre with Mazatrol M Plus CNC Control, Table Size 1460mm x 510mm, 20 Tool ATC, CAT 40 Spindle Taper, Spindle Speed Max 10,000rpm, Travels X = 1040mm, Y = 510mm, Z = 640mm, Table Load 500kg, Machine Weight 5850kg. S/No. 125075 (1997) Location: These lots are located in Burton-on-Trent, UK. Unfortunately, there are no loading facilities on-site, dismantling and loading will be at the cost of the purchaser. Fedpfx Apszr Iymjwegg

Condition: used, Year of construction: 2024, Bavelloni VE350-8 Straight-Line Vertical Edging Machine. Serial No. 110000297 (2024). Country of Origin: Italy Fsdpfozr Iwrjx Apwegg Pre-Auction Offers Considered Location: This lot is located in Burton-on-Trent, UK. A charge of £450 for dismantling and loading onto suitable transport will be automatically added to your invoice should you be successful in purchasing this item. Blocking and securing will be at the cost of the purchaser.

Condition: used, Year of construction: 2006, turning diameter 1000 mm swing dia. 1000 mm Z-axis stroke 900 mm control Siemens 840 D tool taper SK 50, VDI 60 tool piece magazine with 44 Plätzen workpiece weight max. 35 kg Fgsdpfxezwg N Ro Apwjg tool length - max. 500 mm