Used Tube Reducing Machine for sale (66,141)

Year of construction: 2004, condition: excellent (used), Type: HRA4/80-4 Pipes: Ø 6 ÷ 24 mm, wall thickness = 1 ÷ 2,5 mm • Point: Ø3 ÷ 12 mm Itedpfx Ahohmfh Hs Njb

Year of construction: 1986, condition: like new (used), More information on request Ijdpfxohmfnho Ah Njtb

Condition: new, The KPB 81, a robust Tube and Profile Rolling Machine, excels in high-performance bending, combining modern mechanical engineering with powerful hydraulics. This advanced machine allows you to bend medium and heavy steel profiles with remarkable precision, making it ideal for various applications in metal construction, locksmithing, and mechanical engineering. Equipped with three motor-driven rollers, hardened and ground shafts, and an overload slip-clutch, the KPB 81 ensures efficiency and safety. The modular roller system provides optimum adaptability for bending a wide range of profiles, while the hydraulically adjustable bending rollers enhance versatility, allowing for both horizontal and vertical machining. Standard equipment includes a digital display, control panel, and operator manual for intuitive operation. To experience the precision and performance of the KPB 81 in the Tube and Profile Rolling Machines category, you can request a quote today. Iedpfon Upglsx Ah Notb

Condition: used, Year of construction: 1992, Manufacturer : Norden Model : Nordenmatic 700 Year : 1992 Type: Automatic tube filling and sealing machine Capacity: 70 tubes max Filling volume: 1 - 300 ml Dosing accuracy: +/- 0.1-0.5% Tube size range: Length: 50-250 mm / Diameter: Ø 10-50 mm Empty tube feeding : automatic Cleaning + Tube orientation device with a stepper motor Sealing Module: HA - Hot Air Number of buckets: 22 units Product feed hopper + dosing pump Vulcanic Vulcatherm cooling unit (year: 2004) - 3.5 kW (10°C - 35°C) / Outlet temperature: 25°C max - min 3°C Laminar flow Machine dimensions: 135 x 190 x 210 cm Weight : 2 400 kg Spare parts sold with the machine. Choose from two formats among many available formats (additional formats can be added as an option). Full documentation available Ijdpox R D Exofx Ah Netb Video in operation available

Condition: new, The RA 2 Tube End Finishing Machine is an essential tool for every workshop, designed to simplify the assembly and welding of tubes at a precise 90° angle. This robust device caters to various tube diameters while allowing for horizontal and vertical operation, making it versatile for both dual and corner unions. With its capability to handle tubes with wall thicknesses of up to 5 mm, from steel to non-ferrous metals, the RA 2 ensures quick and efficient machining. An eccentric shaft guarantees minimal effort during operation, enhancing productivity. The machine comes standard with an operator manual to facilitate setup and use. For your tube end finishing needs and additional inquiries, you can request a quote today and elevate your performance with KNUTH equipment. Iedpfxjwhkf Hj Ah Njtb

Condition: new, Year of construction: 2025, Electric pipe bending machine without mandrel. Accurate and efficient machine for bending steel, copper, aluminum and brass pipes. The possibility of selecting the optimal bending radius allows for obtaining high-quality results without deforming the material. The presented bending machine is very easy to use. Pipe benders are devices used in individual and small-series production of parts in the automotive, furniture, architecture or garden tool industries. The main bending die is driven by a reduction gear, an electric motor. The device can work in two modes: manual and semi-automatic. The simple and durable design ensures long-term, trouble-free use. Standard equipment digital reading of bending angle The BENDMASTER 40A machine is equipped with dies for pipes with a diameter of: 16; 20; 25; 32; 38 mm Technical data MAXIMUM BENDING ANGLE 180° DIY ROTATIONAL SPEED WHEN BENDING 5 rpm Iodjvugx Depfx Ah Netb MAIN MOTOR POWER 1.5 kW EXTERNAL DIMENSIONS OF THE DEVICE 720 x 500 x 1030 mm WEIGHT 330 kg For more information, please contact us by phone or email. We invite you to familiarize yourself with the offer on our website.

Condition: new, Year of construction: 2025, Electric bending machine for bending pipes and profiles, bars and flat bars depending on the rolls - bending stones used. The machine is additionally equipped with mechanical pressure on the upper roll with vernier. Ideal for bending curves, circles, spirals, etc. Complete with foot pedal for left/right drive control. Used in locksmith shops and on construction sites. Max pipe bending range up to 30 mm. The bending machine allows working both vertically and horizontally. Machine characteristics Electric bender for bending profiles and pipes. The bender allows working in both vertical and horizontal planes. The machine is equipped with mechanically adjustable pressure on the upper roll. Ideal for bending curves, circles, spirals. Bending radius adjustable by means of top pressure device with vernier scale. Application: Bending of profiles and tubes Different profiles can be bent by means of universal rollers Very high unladen weight for optimum stability Ground and hardened directional rollers on the sides, Bending rollers made of robust and hardened steel Operation via foot pedal Vertical and horizontal operation Left/right operation Standard equipment Side guide rollers foot pedal Driver's manual in Polish CE declaration Technical data Round tube [mm] 30 x 1 Rectangular profile [mm] 30 x 30 x 1 Round bar [mm] 16 Solid rectangular piece [mm] 30 x 10 Iodpeu Snlkefx Ah Netb Shaft diameter [mm] 30 Rotation [rpm] 9 Motor power [kW] 0.75 kW Power supply 3 phase, 400V Dimensions (L x W x H) [mm] 1200 x 750 x 1210 Weight [kg] 252

Condition: new, Year of construction: 2025, Electric bending machine for bending pipes and profiles, bars and flat bars depending on the rolls - bending stones used. The machine is additionally equipped with mechanical pressure on the upper roll with vernier. Ideal for bending curves, circles, spirals, etc. Very high empty weight for optimum stability during operation. Complete with foot pedal for left/right drive control. Used in locksmith shops and on construction sites. Max. pipe bending range up to 50 mm. The bending machine allows work in both vertical and horizontal planes. Machine characteristics Electric bender for bending profiles and pipes. The bender allows working in both vertical and horizontal planes. The machine is equipped with mechanically adjustable pressure on the upper roll. Ideal for bending curves, circles, spirals. Bending radius adjustable by means of top pressure device with vernier scale. Iodpou Snm Isfx Ah Netb Application: Bending of profiles and tubes Different profiles can be bent by means of universal rollers Very high unladen weight for optimum stability Ground and hardened directional rollers on the sides, Bending rollers made of robust and hardened steel Operation via foot pedal Vertical and horizontal operation Left/right operation Standard equipment Side guide rollers foot pedal various roller sets DTR in Polish CE declaration Technical data Material: round tube [mm] 50 x 2 Material: rectangular profile [mm] 50 x 50 x 2 Material: round bar [mm] 35 Material: solid rectangular piece [mm] 35 x 35 Diameter of rollers [mm] 40 Motor power [kW] S1 1.5 / S6 2.2 Power supply 3 phase, 400V Dimensions (L x W x H) [mm] 900 x 850 x 1700 Weight [kg] 485

Condition: new, Year of construction: 2025, Accurate and efficient industrial bending machine for bending steel, copper, aluminum and brass pipes. The ability to select the optimal bending radius allows for high-quality results without deforming the material. The presented bending machine is very easy to use. Pipe benders are devices used in individual and small-series production of parts in the automotive, furniture, architecture or garden tool industries. The main bending die is driven by a reduction gear, an electric motor. The device can work in two modes: manual and semi-automatic. The simple and durable design ensures long-term, trouble-free use and guarantees ease of use. Itsdpfovugv Aox Ah Nob Standard equipment digital reading of the bending angle The BENDMASTER machine is equipped with dies for pipes with a diameter of: 38.1; 48.3; 70 mm Technical data MAXIMUM DIAMETER OF BENT PIPE 70x5 mm MAXIMUM DIMENSION OF BENT SQUARE PROFILE 50x50x2 mm MAXIMUM BENDING ANGLE 270° DIE ROTATIONAL SPEED DURING BENDING 1.2 rpm DIE ROTATIONAL SPEED DURING RETURN 2.4 rpm MAIN MOTOR POWER 5 kW EXTERNAL DIMENSIONS OF THE DEVICE 1300x700x900 mm WEIGHT 680 kg For more information, please contact us by phone or email. We invite you to familiarize yourself with the offer on our website.

Condition: used, Year of construction: 2001, Technical details: tube diameter: 74 mm wall strength: 5 mm tube diameter min.: 10 mm tube diameter max.: 74 mm round material: Stahl max: 40 mm control: Trumpf-Rohrtechnik IsoBend 2.0 bending radius max.: max: 300 / min: 65 mm bending angle max.: max: 195 / min: 0,1 ° bending speed: (°/s): 90 / (°/s²): 190 °/s tube pipe draw up length: 3000 mm work pressure of hydraulic: Betriebsdruck max: 300 bar total power requirement: 43 kVA weight of the machine ca.: 8,5 t dimension machine xH: 6,5 x 1,6 x 1,6 m dimension control panel: 0,8 x 0,6 x 1,4 m It is a multi radius bending machine with bending head and swivel arm. (Cold bending machine) Possible applications: only for processing pipes, round steels and wires made of steel, stainless steel and non-ferrous metals. Itjdpfxsu Ibvhj Ah Njb Due to the cross slide of the bending head, the following advantages can be listed: -free programmable X and Y axes -level change cross slide: tical travel = 300mm (vert. position freely programmable) and max. horizontal movement 350mm -Bending forms of different sizes within a stack of bending forms can be approached as required. The bending direction is to the right. Control software Trumpf-Rohrtechnik IsoBend 2.0 Hydraulic unit with high-pressure multi-flow pump Mandrel retraction unit Slide rail (speed max. 362mm/sec. and acceleration max. 1100 mm/sec.) i.D. *

Condition: used, Year of construction: 1990, Technical details: tube diameter: 42 mm wall strength: 25 mm round bar steel: max. Ø 20 mm square material: Rohr 25 x 25 mm bending radius max.: innen max: Ø 20 und außen max: Ø 170 mm bending speed: keine Angaben °/s tube pipe draw up length: 3000 mm control: Software RC 7000 weight of the machine ca.: 2,8 t dimensions electric cabinet: 800 x 700 x 2000 mm dimension machine xH: 5,1 x 0,7 x 2,0 m Application: Machining of deformable tubes, rectangular tubes and round bars and square tubes. Description of the software RC7000, programming manual rectangular tube 42 x 20 x 2,5mm bending direction to the left Operation via control panel with monitor Iodpfxeu Ibvuj Ah Netb Accessories: -div. bending tools for tube Ø 25mm -12 div. collets -div. auxiliary and clamping devices *

Year of construction: 1994, condition: used, Technical details: plate thickness: 1,0 mm tube diameter: 60 / 80 / 90 / 100 / 110 / 120 / 130 mm Itjdpfxsu Icv Ae Ah Neb wall strength: 0,6 / 0,7 / 1,0 mm tube pipe draw up length: 150 - 1000 mm control for program: SPS Simatic S 5 air pressure - required: 5 bar voltage: 380 V control voltage: 24 V total power requirement: 3,5 kW dimensions L x W x H: 1,2 x 1,0 x 1,6 m Pipe drawing-in machine, currently equipped for Ø 130mm. - e.g. for furnace pipes -insertion and removal of the workpieces manually -operation via control panel further features: Sheet thicknesses: 0.6 / 0.7 / 1.0mm workpiece length 150 - 1000mm div. Zubehör/Werkzeuge Ø 120 und Ø 130 und weiteres, wie im Foto *

Condition: good (used), Year of construction: 2006, 1 CNC tube end forming machine Manufacturer: BLM Type: Tube Form M32x1.5 Year of manufacture: 2006 Ijdpon Sm Ddsfx Ah Njtb Technical specifications Thrust force: 3.5 tons Locking force: 5 tons Working stroke: 130 mm Tool diameter: 80 mm Dimensions: 2400 x 1400 x 2000 mm Connected load: 12 kVA Weight: 2200 kg

Condition: new, Year of construction: 2025, THE ECONOMICAL BENDING MACHINE FOR TIGHT BENDING RADII: The bending machine with free-standing bending head can be easily converted to right and left bending for difficult geometries. The plug-in bending tools allow quick conversion to other tube sizes. Fast hydraulics to shorten non-productive times is an important factor for series production. The clamping pressure for tube clamping can be optimally adjusted. The PLC control (arbitrarily expandable via USB stick) with data memory and latest X2X interface, can accommodate an almost unlimited number of programs for bending angle, linear dimension and twisting angle for max. 50 bending sequences on one tube length. A freely programmable database for up to 200 materials is available for monitoring springback values. The machine has 2 operating modes: In "Simple Bending", the length and twist of the bends relative to each other are automatically displayed. In the "Controlled bending" mode, the data is stored beforehand and a permanent target/actual comparison is performed during bending. This excludes incorrect positioning within a tolerance window and thus minimizes the user-related error rate. General error messages are displayed on the large screen with full text. The mandrel retraction is programmable and can be retracted automatically ahead of time when the bending angle is reached. The compact drive unit with the detachable mandrel carrier offers advantages for use at the assembly site as well as for special designs with a very large tube feed and is also available as a stationary variant with a tidy system for tools and mandrel bars. The low-cost alternative to the fully controlled CNC machine. POSSIBLE APPLICATIONS: Hydraulic piping Pipeline construction Plant construction, e.g. chemical industry Metal construction Sample construction Technical data: Bending capacity Ø 6 to 50 x 4 mm depending on material bending radius min/max: 10 mm/140 mm Bending radius min: 1,5 x Ø (standard 2 x Ø) Multifunctional machine control Bending angle adjustment (0.1°) Mandrel beam lengths 1500/3000/4500/6000 mm (special version also longer) Maximum 180º bending result Weight 600-700 kg (depending on version) Ergonomic operation via safety foot switch OPTIONAL ACCESSORIES: Automatic mandrel lubrication (minimum quantity) Pneumatic or hydraulic quick-action chuck Positioning of length and torsion via automatic brake function or via manual stops by foot switch Semi-automatic positioning of length and rotation via servo motors Pneumatic rotation stop Pipe calculation software Laser-supported tool monitoring for monitoring the tool tension 10 inch touch screen with integrated tube calculation Bending radius up to 250 mm Iedpfxsndn Ago Ah Njtb Data transfer via cable (LAN), wireless (WLAN) or USB OUR SERVICE: - Welcome to the test production in our house in the demo room - Consultation and information meeting at your site - Consultation and handling as leasing/financing-purchase via the company JUTEC - Service contracts, maintenance at your site

Condition: used, Automatic Tube Bending Machine Brand: B.L.M. Model: B/90/M Description: Ijdpox Swbisfx Ah Netb Automatic tube bending machine designed for industrial applications, equipped with automatic programming for producing multiple bends in sequence. The machine allows adjustment of the reference distance, ensuring high precision and repeatability in the bending process. For all technical details, please refer to the technical data sheets available in the photos.

Condition: good (used), Year of construction: 1996, control type: CNC control, Tube diameter: 4-28 mm Wall thickness: / mm Minimum bending radius: 1.5 x D - 2.0 x D mm Control: Siemens LOGO Iodpfx Aex Sqcgsh Nstb Delivery rate: 4.5 l/min Max. bending angle +/-: 190° Nominal pressure: 250 bar Operating pressure: 3095 bar Delivery rate: 4.5 l/min Total power requirement: 1.5 kW Drive: Hydraulic cylinder and roller chain

Condition: excellent (used), functionality: fully functional, Year of construction: 2009, machine/vehicle number: 6713-2023-2009, control type: PLC-controlled, degree of automation: semi-automatic, actuation type: hydraulic, pipe diameter (max.): 60 mm, pipe length (max.): 6,000 mm, total length: 6,500 mm, total width: 1,000 mm, total height: 1,400 mm, power: 5.2 kW (7.07 HP), Tube bending machine Gelber Bieger Itedpfx Aoxuii Ueh Nob Type: S03-60 Year of manufacture: 2009 Diameter: 03-60mm Length: 6m Electromechanical drive of the bending axis PLC control Bending angle resolution: 0.1° Electronic length and torsion measurement Manual stop system with overrun stops Torsion indexing: 15° increments Hydraulic tube clamping with adjustable clamping pressure Programmable mandrel retraction Three-jaw chuck Reinforced mandrel support extension up to 6m Tube bending software Including tooling for the following diameters: 50mm, 42.5mm, 40mm, 35mm, 30mm, 25mm, 20mm Collection ex works, unpacked

Condition: new, Year of construction: 2026, Mandrel-free pipe bending machine RB 54 - NC-controlled, with large program memory Article number: 4300054 NC control for setting the bending angle Up to 50 programs can be saved High-quality, robust design Fast tool change Purely motor drive Automatically returns to the starting position TECHNICAL DATA General information Bending radius max. 162mm Bending angle max. 210° Bending speed(s) 2rpm Torque 2341Nm Dimensions and weights Length (product) approx. 600mm Width/depth (product) approx. 220mm Height (product) approx. 470mm Weight (net) approx. 107kg Bending performance Bending performance of pipe material 420 N/mm² (Ø x wall thickness) 54 x 4mm Ijdpfx Aovk Scgeh Njtb Bending performance of pipe material 350 N/mm² (Ø x wall thickness) 54 x 4mm Bending performance of pipe material 650 N/mm² (Ø x wall thickness) 42 x 3mm Electrical data Drive motor power 1.1kW Connection voltage 400V Mains frequency 50Hz Location: from stock - available immediately -

Condition: new, Year of construction: 2025, Laser power: 6000 Watt Rundrohr: 15 - 350 mm Quadratrohr: 15 x 15 - 350 x 350 mm Itsdpfx Aoxgc Aroh Neb Rechteckrohr: 15 x15 - 350 x 350 mm max. Positioniergenauigkeit X,Y-Achse: 0,05/1000 mm max. Positioniergenauigkeit U-Achse: 0,05/1000 mm Max. steel: 14 mm Max. stainless steel: 10 mm Max. aluminium: 10 mm max. tube weight: 40 kg/m max. tube weight: 240 kg Length: 17296 mm Width: 4271 mm Height: 2933 mm

Condition: used, Year of construction: 2015, Working hours laser on: 32824 h Working hours beam on: 28572 Laser power: 3000 kW Max. steel: 8 mm Max. stainless steel: 5 mm Max. aluminium: 6 mm Max. copper: 4 mm Max. brass: 4 mm Length: 18000 mm Width: 9000 mm Height: 2800 mm Machine weight: 21000 kg max. tube length: 6500 mm max. length finished parts: 4500 mm max. tube diameter: 152 / 170 mm min. tube diameter: 12 mm max. tube weight: 25 kg/m Standard configuration Machine: Stable machine frame Pipe support raw material with automatically retractable pipe supports Push-through chuck with self-centering parallel clamping rollers High-precision drives LoadMaster Tube 6.5m with bundle trough exclusion station parts tray Pipe support finished part with extendable guide rollers Scrap conveyor belt with bin Closed beam guidance via fiber optic cable (LLK) PierceLine NitroLine FocusLine Programmable cutting gas pressure automatic switch-off Ergonomic control panel with color touch screen Trump TruLaser: External solid-state laser TruDisk 3001 with 1 LLK outlet, diode-pumped disk laser with a wavelength of 1.03 nm Excitation via pump diodes laser power control Logbook function LAser cutting unit: universal cutting unit One cutting head strategy ControlLine control: Sinumerik 840 D SL easy handling Online help Integrated technology data Teleservice via the Internet Data transfer: RJ45 network connector USB Security: CE marking Itodpfjuqdg Tex Ah Nsb multi-beam light barriers Monitoring system for gas pressure, temperature and cooling water Compact dedusting system Protective cabin with certified safety panes Extended machine accessories - Rapid Cut- Bevel cut technology package- Finished part length +1.5 m (to 4.5 m)- SeamLine Tube- Wireless Operation Point- Low-scratch version LoadMaster Tube 6.5 m- Tube diameter 15 mm Automation - LoadMaster Tube 6,5 m with bundle support

Condition: good (used), Year of construction: 1999, AXOMATIC OPTIMA 1000 Tube Filling and Sealing Machine (Plastic Tubes) This compact machine has a capacity of up to 70 plastic tubes per minute and is used for filling and sealing tubes. With the appropriate format and pump sets, the machine can be adjusted to handle the following specifications: Tube diameter: 10 - 60 mm Tube length: up to 280 mm Filling volume: 2 - 300 ml The machine is offered with the following format parts: Ijdpfx Asx Rqlfsh Njtb Tube holders for plastic tubes Ø 35 mm and 48 mm Manufacturer: Optima Year of manufacture: 1999 Required floor space: approx. 180 x 160 x 240 cm

Condition: good (used), functionality: fully functional, Year of construction: 1995, Tube bending machine by MARK / Ridgid Type: 2H B Iodpfxjx Ivpws Ah Njtb Without tools

Year of construction: 2014, condition: ready for operation (used), Additional Equipment Bundleloader: 6.5 meters Steploader: 6.5 meters Output with Conveyor Belt: 6.5 meters at the front, 4.5 meters at the back Iodpfsx H A Rxjx Ah Notb This BLM Adige LT8 4kW Co2 was manufactured in 2014. It features a Rofin DC035 3.5kw laser source and is equipped for tube cutting with a 3D cutting head. It handles materials up to 12mm thick and 206mm round, with lengths up to 6500mm. Consider the opportunity to buy this BLM Adige LT8 4kW Co2 tube cutting machine. Contact us for more information about this machine. Application Types Cutting

Condition: used, Year of construction: 2017, pipe diameter (max.): 80 mm, mandrel length: 4,500 mm, Mandrel bending machine S8004 ----- For the production of dimensionally accurate pipe geometries with bending radii of up to 1.5XD → maximum bending performance pipe 76 x 4 mm (400 N/mm²) → maximum bending performance pipe 60 x 60 x 3 mm (400 N/mm²) → maximum bending performance pipe 76 x 2.9 mm (stainless steel) → total connected load 7 kW → pipe length 4.5 mtr Robust and durable steel construction in a force-locking connection - no construction susceptible to torsion due to, for example, the split construction of the bending head and mandrel carrier. Maintenance-free electromechanical drive of the bending axis. The touch display of the control enables simple and intuitive programming and use of the system. After the pipe has been pushed on, it is fixed in the carriage by the chuck. This enables the pipe to be positioned precisely and thus the creation of dimensionally accurate geometries. The standard also includes checking the pipe geometry before the bending process: If the bending process is started in the wrong position, the machine does not give permission for this. This prevents incorrect operation. Optional additional features provide more convenience and increase the output and thus the efficiency of the system. Itedpfjttah Rex Ah Njb Data is exchanged from the optional pipe calculation program TBS-3D (PC version) via USB stick or via FTP access from the computer to the machine control system. USB or LAN connectors (RJ45) are available as standard. Existing pipe geometries can be converted quickly and easily, for example, using the STEP format. Standard equipment: → Electromechanical drive of the bending axis 4 kW → Speed 2.9 rpm (=17°/sec.) → Bending direction left → Bending angle resolution 0.1° → Max. bending radius 200 mm → Bending shaft diameter 50 mm → Electronic length measurement ±0.1mm → Electronic twist measurement ±0.1° → Manual stop system (overtravel stops in length) → Manual locking system (15° in twist) → Three-jaw chuck for locking the pipe in the carriage → External control panel PLC control: → Touchscreen 10.1" → ETH 10/100, X2X Link, USB → Foot switch operation → Data transfer via network (W)LAN or USB → Material database Unique graphic programming: Simple geometries can be calculated directly on the machine. The control calculates the feed values directly after entering the length and angle and the bending angles. Hydraulics: → Hydraulic power 3 kW → Hydraulic pipe clamping with adjustable clamping pressure → Programmable early mandrel retraction Options (can be ordered as additional equipment): → Variable bending speed using frequency converters or servo motors → Automatic tool retraction (manual or controlled) → Pneumatic chuck → Automatic mandrel lubrication → Pneumatic stop system (length + twist) → Mobile version (rollers) → Radius extension Pictures show new machine

Condition: new, Year of construction: 2023, Pipe drilling / slant drilling machine automatic drilling machine TDM100 2D AT - automaticwith two opposite drilling units - minimum quantity lubrication - manual material clamping - automatic feed and automatic pipe turning - max. pipe length 3.000mm - positioning accuracy +/- 0,2mm - power drilling unit 2 x 2,2 kW - manual insertion and removal of material - drilling heads +/- 50° swiveling - manual 360 degree swiveling - motor speed 295 - 2950 rpm - operation via touch panel - 100 positions programmable - illumination drilling unit - integrated tool cabinet - round tube up to 114mm Iedpfslgzytsx Ah Netb - square up to 100 x 100mm - flat material up to 100 x 15mm - T-profile up to 100 x 100 x 12mm - L-profile up to 100 x 100 x 8mm - Double post up to 100 x 15mm - Flow drilling up to M12 - Drilling up to Ø 50mm