Used Dormac Cycle-Controlled Lathe for sale (51,653)

Condition: excellent (used), Year of construction: 1996, turning diameter 380 mm turning length 750 mm control HEIDENHAIN ManualPlus total power requirement 9 kW Knodpfsx U Encox Afdsb weight of the machine ca. 2 t dimensions of the machine ca. 2,4 x 1,7 x 1,7 m

Condition: ready for operation (used), Year of construction: 1997, functionality: fully functional, center width: 1,000 mm, turning diameter over bed slide: 570 mm, swing diameter over cross slide: 340 mm, center height: 280 mm, spindle speed (max.): 2,500 rpm, No minimum price – guaranteed sale to the highest bidder! TECHNICAL DETAILS Spindle speed range: 0 – 2,500 rpm Kodpfxozpxglo Afdenb Swinging diameter: 500 mm Diameter of rotation over bed: 570 mm Diameter of rotation over carriage: 340 mm Center height: 280 mm Distance between centers: 1,000 mm EQUIPMENT Accessories (see pictures)

Year of construction: 2004, condition: good (used), machine/vehicle number: 041115166, Offer 26312 Technical data: - Maximum swing over bed: 550 mm - Maximum swing over cross slide: 310 mm Ksdpfx Afjzvna Uodenb - Turning length: approx. 1500 mm - Travel distances: - Z-axis: 1600 mm - X-axis: 300 mm - Spindle mounting according to DIN - Spindle bore: 82 mm - Taper of tailstock spindle: MK 5 - Travel of tailstock spindle: 150 mm - Spindle speeds: 80 - 3500 rpm - Rapid traverse rates X / Y - Drive power: 17 kW - Including: - CNC control: FAGOR - Hydraulic chuck - Electric handwheels - 8-position tool turret - Manual tailstock - Coolant system - Footprint: approx. W 4400 x H 2100 x D 2300 mm - Weight: approx. 4400 kg

Condition: good (used), Year of construction: 1996, functionality: fully functional, turning diameter over cross slide: 200 mm, spindle bore: 54 mm, turning diameter: 410 mm, center width: 950 mm, center height: 200 mm, spindle speed (max.): 3,000 rpm, overall weight: 2,100 kg, Equipment: documentation/manual, Dear Sir or Madam, We offer for sale a WEILER E35 CNC cycle lathe. The Siemens 805 cycle control and electronic handwheels make operation very simple and extremely convenient. The machine has been thoroughly inspected in our workshop, is in fully functional condition, and is available for a power-on test at any time. We look forward to your inquiry! Our service promise to you: - We are a certified master workshop specializing in mechanical engineering - All machines are thoroughly checked - All lubricants and, where necessary, worn components are replaced in advance - On request, we can completely or partially overhaul the selected machine for you - You can freely choose the paint color of your selected machine - Additional accessories such as tools can be ordered directly if required - On request, we can install further accessories such as safety devices - We are happy to take care of shipping and/or installation for you Ksdpfx Aeyalulofdenb

Condition: used, Year of construction: 2002, Lathe Gildemeister Gildemeister NEF 320K, year of manufacture 2002. Kodpjzu Aqlsfx Afdsnb

Condition: excellent (used), Year of construction: 1997, CNC Lathe Weiler E 50/1, 1997 Technical specifications: Manufacturer: WEILER Model: E 50/1 Year of manufacture: 1997 Centre height: 280 mm Centre distance: 1000 mm Knsdpfx Ajymdw Ssfdsb Max. turning diameter: 500 mm Swing diameter over bed: 570 mm Swing diameter over cross slide: 340 mm Spindle speeds: 0 - 2500 rpm Chuck

Condition: used, Year of construction: 2000, machine/vehicle number: 990101, total length: 6,400 mm, total width: 2,200 mm, total height: 2,300 mm, overall weight: 18,500 kg, Heavy Duty Lathe Seiger SLZ 1200 x 3000 with Siemens Sinumerik 810D Cycle Control (Teach-In) The heavy duty lathe Seiger SLZ 1200 x 3000 is equipped with a Siemens Sinumerik 810D cycle control (Teach-In). The machine was most recently used as a faceplate and frontal lathe and therefore operated without a tailstock and without steady rests. However, the machine can still be structurally equipped with appropriate steady rests or a tailstock and used for classic center work. Configuration with AC main drive, large faceplate, hydraulic unit, separate control cabinet, and 2 chip conveyors. Working Area Distance between centers: 3,000 mm Swing diameter over bed: 1,200 mm Swing diameter over cross slide: 850 mm Cross slide travel: 620 mm Bed width: 750 mm Spindle Spindle nose: DIN 55027 size 11 Spindle diameter front bearing: 190 mm Spindle bore: 104 mm Speed range: 5 – 900 min⁻¹ Max. torque: 6,000 Nm Main Drive Drive power: 37 / 52 kW (100% / 60% duty cycle) Feed X-axis feed force: 24,000 N Z-axis feed force: 16,000 N Rapid traverse X: 7 m/min Rapid traverse Z: 4 m/min Tool Holder Turning tool cross-section: 40 × 40 mm Electrical Data Supply voltage: 400 V Frequency: 50 Hz Max. current consumption: 200 A Workpiece Weights (Manufacturer specifications for standard configuration) Between centers without steady rest: 5,000 kg Between centers with 1 steady rest: 6,000 kg Between centers with 2 steady rests: 7,000 kg Flying in faceplate: 1,800 kg Chip Conveyor 2 x AME Chip Conveyors Manufacturer: AME GmbH, Emsdetten Type: S8 300 Tlg. 63 Kjdpfezdd E Rox Afdenb Year of manufacture: 05/2016 Not Included: Tailstock Steady rests Note The machine was most recently used as a faceplate or frontal lathe. Therefore, neither a tailstock nor steady rests are currently available. The machine is particularly suitable for machining large disc, ring, and flange workpieces. A later retrofit for use between centers is fundamentally possible. Serial number: 990101 Tip width: 3000 - mm Turning diameter max.: 850 mm Control: • Siemens Sinumerik 810D Weight approx.: 18,500 kg Dimensions (LxWxH) approx.: 6400 x 2200 x 2300 mm Year of construction: 2,000 Condition: in working order Terms of payment: 100% prepayment before pick-up Terms of delivery: From foundation under power: No

Condition: used, Year of construction: 2008, centre height 400 mm centre distance 2.000 mm turning diameter over bed 810 mm control WEILER D3 turning diameter over slide rest 510 mm turning length 2.000 mm spindle head DIN55027 Gr.11 spindle diameter 150 mm spindle bore 106 mm Turning Speed - Range 1 1 - 450 U/min. power capacity at 60% / 100 % load 37,00 / 30,00 KW Knjdpezugf Hofx Afdob max. torque at 60% / 100% load 3.205 / 2.599 Nm Turning Speed - Range 2 4 - 1.800 U/min. power capacity at 60% / 100 % load 37,00 / 30,00 KW max. torque at 60% / 100% load 813 / 659 Nm face slide travel 410 mm upper slide-support travel 140 mm longitudinal feed 0 - 5 mm/U face feed range 0 - 5 mm/U. power feed longitudinal 20.000 N feeding force facing 10.000 N rapid travel - longitudinal/face 10 / 5 m/min tool taper Capto C6 tailstock quill diameter 115 mm tailstock quill stroke 225 mm tailstock quill taper MT 6 thread - mm pitch 0,1 - 250 mm thread - inch 1/4 - 56 inch. thread - module total power requirement 36,00 kW weight of the machine ca. 6,00 t dimensions of the machine ca. 6,00 x 2,50 x H2,20 m Control WEILER D3 Three-jaw chuck ROEHM DURO 630 powered tools (Capto C6) chip-conveyor

Condition: used, Year of construction: 1998, turning diameter 570 mm turning length 2000 mm control Kedjugawfspfx Afdenb total power requirement 15 kW weight of the machine ca. 3,5 t dimensions of the machine ca. m

Condition: used, Year of construction: 1999, turning diameter 150 mm Ksdpfx Aevm Dv Dsfdenb turning length 500 mm total power requirement 4 kW weight of the machine ca. 0,8 t

Condition: used, Year of construction: 1996, turning diameter 400 mm turning length 915 mm Kodpfxet Hw Szo Afdjnb control NUM Type 1062 T total power requirement 12,5 kW weight of the machine ca. 5500 kg dimensions of the machine ca. m

Condition: good (used), Year of construction: 1994, cycle controlled lathe Machine type: Weiler E 35 Control: Siemens 805 Year: 1994 Available after: sofort / now SPECIFICATIONS Center height: 200 mm Max. turning length: 950 mm Turningdiameter: 410 mm Max. swing over slide: 200 mm Knsdpfx Asziy A Iefdjb Spindle bore: 54 mm Spindle speeds: 20 - 3.000 rpm Tailstock: MK 4 Travel X-Axis: 230 mm Power consumption: 10 KW Machine weight: 2100 kg Equipment 46 Spannzangen 173 E nach DIN 6343 / 46 collets 173 E DIN 6343

Condition: new, Year of construction: 2025, functionality: fully functional, turning diameter over cross slide: 650 mm, spindle bore: 106 mm, turning length: 2,130 mm, turning diameter: 650 mm, quill stroke: 150 mm, quill diameter: 100 mm, rapid traverse X-axis: 13 m/min, rapid traverse Z-axis: 13 m/min, spindle speed (min.): 30 rpm, spindle speed (max.): 1,600 rpm, center height over cross slide: 410 mm, feed rate X-axis: 2 m/min, feed rate Z-axis: 13 m/min, total length: 4,290 mm, total width: 2,553 mm, total height: 2,375 mm, type of input current: three-phase, spindle motor power: 11,000 W, overall weight: 5,200 kg, rotational speed (min.): 30 rpm, rotational speed (max.): 1,600 rpm, torque: 1,050 Nm, controller manufacturer: Milltronics, controller model: 9000 DGI, input voltage: 400 V, drill spindle diameter: 106 mm, nominal power (apparent): 20 kVA, number of spindles: 1, spindle nose: A1-11, tailstock quill diameter: 100 mm, tailstock quill mount: MK 5, tailstock quill stroke: 150 mm, number of slots in tool magazine: 8, Equipment: rotational speed infinitely variable, LIST PRICE of the machine: EUR 119,500.00!!!!! The machine is immediately available and NEW. Delivery of the machine in overseas packaging from our warehouse. (Transport of the machine at the buyer’s expense) Operating materials to be provided by the buyer. Commissioning and training by Milltronics: EUR 5,000.00 Leasing possible (subject to creditworthiness) Machine Details: • CNC control Milltronics 9000-DGI • 15" LCD color touchscreen • Ethernet interface • USB interface • Productivity software, DSA, MSV, bidirectional turning cycle, 9000-DGI Desktop • Connection for external keyboard • Electronic handwheels for manual operation, teaching, or automatic sequences • Custom macros available • Override potentiometers for axes and spindle • Spindle load monitoring • Key switch to lock EDIT function • Lights to indicate operating status • Additional “M” function with CNC wait channel • Constant cutting speed • Rigid tapping • Spindle speed 30 – 1,600 rpm • Spindle motor 18 / 11 kW, 2-stage electronic gearbox • Spindle nose type A1-11 • Tool turret with 8 positions 25 mm • One axial tool holder for standard tools 25 mm x 25 mm • One tool holder for boring bars 38 mm • Automatic lubrication system • Full enclosure with sliding doors • Coolant system with pump Knjdpfsztrkljx Afdeb • CE certification • Instruction manual, spare parts list and circuit diagrams in digital format • Operating manual and maintenance manual in digital format • Transformer for standard industrial power supply 400 volts, 3 phase • Lifting brackets for crane transport Optional accessories: Manual 3-jaw chuck 300 mm Hydraulic tailstock quill (only in combination with hydraulic chuck) Hydraulic 3-jaw chuck with hydraulic unit (diameter 300 mm – bore 70 mm) Fixed steady rest with rollers, range 20 – 200 mm Fixed steady rest with rollers, range 180 – 410 mm Travelling steady rest with brass pads, range 20 mm - 200 mm 38 mm boring bar holder for turret 25 mm axial tool holder Hinged belt chip conveyor instead of drawers Programming manual in paper format Machine manual in paper format Foot mat with Milltronics logo

Condition: as good as new (ex-display), Year of construction: 2025, functionality: fully functional, spindle speed (max.): 4,000 rpm, Control system: Siemens 828 D Drive spindle Speed: 4,000 rpm Power: 9 kW Maximum torque: 110 Nm Chuck diameter: 210 mm Spindle bore: 53 mm Spindle nose: A2-5'' Working area Distance between centers: 1,000 mm Center height: 240 mm Swing over bed: 470 mm Swing over compound slide: 200 mm Swing over cross slide: 430 mm Z-axis travel: 1,065 mm X-axis travel: 220 mm Tool system Turret: PARAT 4-position turret head RD 2 Tailstock Technology: Follow-type Centering point: MK-4 (rotating) Steady rest Technology: Traveling Diameter range: 12 mm - 50 mm Equipment Chip management: Chip tray Coolant supply: Coolant pump, 7 bar Knsdpfxezrghvs Afdsb Additional feature: Adapter plate PARAT RD-2 with internal cooling Chuck: SMW wedge-type chuck (D = 210 mm) Jaw set: 1 set of hardened jaws Footprint (L x W): 2.91 m x 1.24 m

Condition: new, neu ca. 4 Monate ab Auftragse Bulgarien 79430 € 1501.23 € 600 mm 1500 mm 300 mm 80 mm 400 mm 400 mm 8 90 MK 3 20 - 100, 80 - 400, 400 - U/Min max. 8 m/min max. 8 m/min 290 mm 90 mm 5 MK 225 mm 11 kW 3,5 / 22 kW/Nm 1,75 / 11 kW/Nm 120 Nm 1250 daN 1050 daN Fast and simple communication between the operator and the lathe. Simple workpieces are machined in the same way as on the universal lathe, but more efficient. Complicated workpieces are machined in the same way as on the universal lathe, but faster. Complicated workpieces are machined in the same way as on the CNC lathe, but easier. Based on the controller Schneider Magelis the intelligent, self-developed ZMM Sliven software leads the operator also without programming skills simple and fast to the finished workpiece. The interface is simple and with large icons, which is convenient in a specific work environment. The intuitive menu facilitates the transition to next screens and operations. Well visualized and structured cyclic operations,threads and steps. Possibility to set up the feeds, threads, etc. both mechanically and digitally (via the display). Knedpfx Afjwirn Sjdsb The manual, automatic and combined mode allows more precise operation compared to universal lathe. Easy transition from manual to automatic operation mode. ACCESSORIES: Siemens motor with Siemens Inverter (3 gear steps) CNC control Schneider Magelis Quick change tool post Amestra Multifix Typ C inkl. 4 Halter (3x Rechteck, 1 Rund) 3-jaw chuck Bison 3204/DIN6350, Ø 250 mm, max. 2500 r/min Spindle dead center Ball screw spindles for longitudinal and cross axes Coolant equipment Full length rear splash guard Spindle protection Splash guard for the chuck Levelling bols and shims Quick release tailstock Machine lamp Operating manual Machine according to "CE“ FURTHER TURNING LENGTHS: 1000 mm € 78 030,00 mm € 81030,00 mm € 84130,00 mm € 87330,00 mm € 90630,00

Condition: excellent (used), Year of construction: 1986, Heavy-duty lathe, cycle-controlled lathe, lathe, center- and feed-screw lathe, center- and feed-screw lathe, CNC lathe -Control: Monforts Control System MTC K -Machine bed: hardened -Turning length: 1100 mm -Turning Ø over bed: 560 mm -Turning Ø over support: 300 mm Ksdpfsw E Nkijx Afdjnb -Spindle bore: Ø 60 mm -Spindle speeds: 2 - 2800 rpm -Key bar chuck: Schunk Ø 250 mm -Tailstock mount: MK5 -Drive: 16 kW -Accessories: Multifix tool holder, tools see photos -Dimensions: 1600/2860/H1830 mm -Weight: 3300 kg

Condition: used, Year of construction: 1996, Technical details: turning diameter: 500 mm turning length: 1500 mm turning diameter over bed slide: 290 spindle bore: 71 mm turning speed range: 3 - 2800 U/min rapid speed: 10 / 5 m/min feed speeds: 1 - 2000 mm/min total power requirement: 22 kW weight of the machine ca.: 3,2 t dimensions of the machine ca.: 3,0 x 1,6 x 2 m with Teach In controll R&D MTC-K Knedjwwlvlspfx Afdob PARAT toolpost 1 fixed steday dia. 100 mm 4 jaw face plate dia. 500 mm coolant attachment *

Condition: used, Year of construction: 2000, Technical details: turning diameter: 800 mm turning length: 2965 mm max. turning dia. over saddle: 520 mm Knedjxxig Uepfx Afdsb spindle bore: 92 mm turning speed range: 3 - 1800 U/min spindle head: Größe 11 total power requirement: 37 kW weight of the machine ca.: 6,5 t dimensions of the machine ca.: 5,2 x 2,2 x 1,9 m Teach In Control MTC-K 3-jaw chuck ROTAS Dia. 400 mm face plate RÖHM Dia. 630 mm 4-station toolholder system PARAT 1 fixed steady coolant attachment and chip conveyor *

Condition: used, Year of construction: 1998, Technical details: turning diameter: 830 mm turning length: 4000 mm turning diameter over bed slide: 540 mm spindle bore: 130 mm turning speed range: 2 - 1600 U/min rapid speed: 4 / 5 m/min feed speeds: 1 - 2000 mm/min total power requirement: 55 kW weight of the machine ca.: 7,5 t dimensions of the machine ca.: 7 x 2,2 x 2 m Knedpjwwlt Refx Afdsb with Teach In controll R&D MTC-K MULTIFIX toolpost size D coolant attachment *

Condition: excellent (used), Year of construction: 2004, Control system: Heidenhain Working area Swinging diameter over bed: 320 mm Swinging diameter over carriage: 150 mm Distance between centers: 800 mm Working spindle Spindle mount according to DIN 55027: B6 Spindle bore: 50 mm Spindle taper, metric: 60 Main drive Motor power at speed 1500 min-1: 7 kW Spindle speed range, 1st gear: 0 - 1000 min-1 Spindle speed range, 2nd gear: 20 - 4000 min-1 Max. spindle torque 1st gear: 360 Nm 2nd gear: 90 Nm X-axis Max. travel: 190 mm Rapid traverse: 5000 mm/min Max. feed force: 3000 N Z-axis Max. travel of bed carriage: 750 mm Rapid traverse: 8000 mm/min Max. feed force: 5000 N Quick-change tool holder MULTIFIX B Max. steel diameter: 25 x 25 mm Tailstock Diameter of quill: 65 mm Ksdjzdp Txepfx Afdjnb Quill travel: 120 mm Internal taper of quill – Morse: 4 Machine dimensions Length: 2180 mm Width: 1341 mm Height: 1775 mm Machine weight: 2150 kg Power requirement: 21 kVA

Condition: used, Year of construction: 2014, Technical details: turning diameter over bed: 660 mm turning dia. over face-slide: 460 mm turning length: 1650 mm centre distance: ca. 2200 mm swing over bed: 660 mm swing diameter over slide rest: 460 mm swing diameter: in Kröpfung: 960 mm centre height: 320 mm control: Siemens 828 D ShopTurn x-axis: ca. 350 (plan) mm spindle bore: Ø 105 mm range of revolution per miute: 26-224 / 225-670 / 671-2.000 stufenlos U/min feed continuous: X: 0,5 - 3.000 mm/min feed continuous: Z: 1 - 3.000 rapid traverse x + z axis: 6 m/min tailstock taper MT: MK 6 quill stroke: 300 mm total power requirement: ca. 23 kW dimension machine xH: 4,2 x 2,3 x 2,3 m dimension swarf conveyor LxWxH: 2,3 x 1,7 x 1,3 m Chip conveyor includes cooling water tank with pump 3-speed manual gearbox with electronic gear shifting Tool holder according to/with Silent Tool Technology equipped (Capto C6) Manual control unit Foot switch Control panel Hydraulics Knedpfeu Ix Nrox Afdsb automatic door closing (pneumatic) Accessories see comparable in the photo. *

Condition: used, Year of construction: 1998, Technical details: turning diameter over bed: 600 mm turning diameter over support: 400 mm turning length: 2000 mm center height over support: 300 mm centre distance: 1600 mm revolution per minute: 3 - 2.500 U/min tailstock taper MT: MK 5 spindle bore of work spindle: 62 mm quill stroke: 190 mm longitudinal feeds:: ca.0,001-10 einstellbar mm/U cross feed: ca. 0,001-5 einstellbar mm/U Rapid feed X axis: bis zu 5000 m/min. total power requirement: 40 KVA weight of the machine ca.: 5,6 t dimension machine xH: 4,0 x 2,0 x 1,9 m Knsdpfx Aow Rkt Ijfdjb incl. accessories see picture *

Condition: good (used), functionality: fully functional, spindle bore: 70 mm, turning length: 1,500 mm, turning diameter: 500 mm, overall weight: 3,300 kg, Monforts KNC5-1500 Lathe in good condition for sale. The machine operates perfectly. Included accessories comprise all documentation, a quick-change toolholder, and a chip conveyor as shown in the photos. Inspection under power is gladly possible. Loading can be arranged by forklift or crane. Working area: Distance between centers: 1,580 mm Swing over bed: 500 mm Swing over cross slide: 290 mm Cross slide travel: 265 mm Top slide travel: 140 mm Bed width: 360 mm Cross slide width: 220 mm Bed slide guide length: 615 mm Turning tool shank size: 32x25 mm Spindle diameter at front bearing: 100 mm Spindle nose as per DIN 55027, Size 8 Bar capacity: 70 mm Spindle taper (metric): 80 Main drive: steplessly variable, three-phase AC motor Drive power (50/100% duty cycle): 15/11 kW Ksdoypbcdepfx Afdsnb Total speed range: 2-2,800 rpm Gear stage I: 2-280 rpm Gear stage II: 7-1,120 rpm Gear stage III: 28-2,800 rpm Three-phase servo drive with mechanical safety clutch Rapid traverse speed longitudinal/cross: 10/5 m/min Thread cutting range: longitudinal and taper threads, pitch 0.001-500 mm Tailstock: quill diameter 80 mm Quill stroke 160 mm Internal taper MK5 Tool system: Multifix quick-change toolholder, size C Coolant system: pressure/delivery rate 0.4 bar / 10 l/min Machine dimensions (LxWxH): 3,330 x 1,550 x 1,790 mm Weight (transport unit): approx. 3,300 kg Bed: – Torsion-resistant bed, guideways hardened and ground Gearbox: 3-stage with limit switch monitoring Spindle: – Front spindle bearing: double-row cylindrical roller bearing with tapered bore combined with double-row angular contact bearing – Electric holding brake in main drive motor – Full-length cross slide with adjustable gib Longitudinal and cross feed driven by variable-speed three-phase AC motor via precision ball screw Feed and rapid traverse operated via cross selector lever Longitudinal and cross movements via electronic handwheels Increment selector switch in combination with electronic handwheel Additional contour handwheel Automatic central lubrication for guideways and ball screws Clampable top slide – Quick-change toolholder – Bedway clamping by excenter lever – Additional clamping via tension bolts for heavy workpieces – Quill adjustment by handwheel – Quill tip holder MK5 Connection voltage: 3 x 400 Volt +/-10%, 50 Hz for TN-S or TN-C networks without RCD Total connected load: 16 kVA Transistor-controlled three-phase main drive with speed monitoring If you have any questions, please feel free to contact us at any time.

Condition: good (used), Year of construction: 1996, functionality: unexamined, turning diameter over cross slide: 700 mm, turning length: 2,000 mm, turning diameter: 700 mm, spindle bore: 106 mm, spindle speed (max.): 1,800 rpm, For sale: 1 used rotary lathe Manufacturer: Weiler Werkzeugmaschinen Type: E70 Year of manufacture: 1996 Technical data: Center height: approx. 355 mm Swinging diameter over bed: approx. 700 mm Swinging diameter over cross slide: approx. 420–450 mm Distance between centers: 2000 mm Kodpfxey R Dyvj Afdenb Spindle bore: 106 mm Includes the documentation shown in the pictures, chip conveyor, and Sauter tool holder. The machine can be viewed at our warehouse in 09599 Freiberg.

Condition: excellent (used), Year of construction: 1998, turning diameter 410/ 440 mm turning length 950 mm control Siemens / Weiler D2 workpiece weight max 900 kg spindle head Gr 6 MK 6 Ksdpoyrh Apjfx Afdonb spindle bore 54 mm face stroke 230 dia. of quill MK 4 mm quill stroke 120 mm centre height 200 mm thread pitch max. in mm 0,1 - 250 mm spindle turning speed - stepless 1 - 3000 U/min total power requirement 12 kW weight of the machine ca. 2,1 t dimensions of the machine ca. 2,3 x 1,5 x 1,8 m