Used Lathe Grinder for sale (6,761)

Condition: used, MORI SEIKI TL-5 CNC LATHE MAKE MORI SEIKI, MADE IN JAPAN MODEL TL-5 YEAR 1980 RETROFITTED 2016 CONTROL FAGOR 8055 I SWING OVER BED 520.0 mm SWING OVER CARRIAGE 380.0 mm MAX MACHINING DIA 280.0 mm MAX WORK LENGTH 2000.0 mm CHUCK DIA 300.0 mm SPINDLE RANGE 17 – 2000 RPM SPINDLE NOSE A2 - 8 Dedpfx Aeyuxvlog Rjur SPINDLE BORE 75.0 mm TURRET 8 STATIONS TAILSTOCK YES PLUS RETROFITTED WITH MODERN FAGOR 8055i CONTROL. 3 SPEED GEARBOX HYDRAULIC STEADY SWARF CONVEYOR COMPLETE SET OF MANUALS FULLY WORKING ORDER

Condition: used, Lumsden 92 ML Vertical Spindle Rotary Surface Grinder , 48 Inch dia chuck, autosizing, table jog facility, Filtermist unit fitted with (2) extraction vents to rear of table guards, fitted with segmented wheel, serial number 92ML/109/11821. Machine tools manuals. Coolant filtration tank. Also with unused grinding stones segmented. Dodpfx Agsyabc Ee Reur Table Diameter 48″ / 1219mm, Segmental Wheel Dia. 28” / 711mm, Max. Height Capacity 22.5″ / 572mm, Spindle Speed 550rpm, Table Speed 6 & 18rpm, Auto Feed 0.004-0.04 ins/min – 0.1-1.0 mm/min, Spindle Motor 50HP / 35Kw, Floor Space 14′ x 11′ / 4394 x 3353mm, Approx. Net Weight 12T/12200Kg, Approx. Gross Weight 13.5T /13700Kg

Condition: excellent (used), Year of construction: 2009, functionality: fully functional, turning diameter over cross slide: 755 mm, turning length: 510 mm, turning diameter: 366 mm, spindle bore: 73 mm, spindle speed (max.): 5,000 rpm, travel distance X-axis: 260 mm, travel distance Y-axis: 100 mm, travel distance Z-axis: 590 mm, spindle motor power: 15,000 W, rapid traverse X-axis: 30 m/min, rapid traverse Y-axis: 10 m/min, rapid traverse Z-axis: 30 m/min, rotational speed (max.): 6,000 rpm, total height: 2,120 mm, total length: 5,705 mm, total width: 1,922 mm, feed length X-axis: 260 mm, feed length Y-axis: 100 mm, feed length Z-axis: 590 mm, quill travel distance: 564 mm, quill diameter: 80 mm, swing diameter over cross slide: 755 mm, turning diameter over bed slide: 923 mm, type of input current: three-phase, overall weight: 5,700 kg, swing diameter over bed slide: 923 mm, bar passage: 65 mm, bar diameter (max.): 65 mm, Equipment: documentation/manual, rotational speed infinitely variable, 2009 Mori Seiki NL2000Y/500 CNC Lathe in very good condition. Dsdpfxeyhqkzo Ag Rsur Plastics-only medical device use. Y-Axis, live tooling, tailstock, workpiece unloader. Available now in Ireland. Machine Type: CNC Turning Centre with Y-Axis & Live Tooling Manufacturer: Mori Seiki (DMG MORI) Model: NL2000Y/500 Year: 2009 Location: Ireland Availability: Immediate Machine Overview We are pleased to offer this 2009 Mori Seiki NL2000Y/500 CNC Lathe in very good condition, available through Used Machine Tools Ireland. This machine was used only for dry machining of plastics by a medical device manufacturer, meaning: No heavy metal cutting No coolant contamination Exceptionally low mechanical wear The Mori Seiki NL Series is globally recognised as a benchmark for high-precision CNC turning, and the NL2000Y/500 is especially sought after due to its Y-axis capability, live tooling, and BMT (Built-in Motor Turret) design. Key Features & Benefits Y-Axis CNC Lathe – complex milling and turning in one setup BMT Turret Technology – superior rigidity, accuracy, and thermal stability Live Tooling up to 6,000 RPM – ideal for milling, drilling, and tapping Medical / Plastics-Only Use – extremely clean operating history Tailstock & Workpiece Unloader – ideal for automated production MSX-850 III Control – powerful, reliable Mori Seiki control system Technical Specifications – Mori Seiki NL2000Y/500 Capacity Distance Between Centres: 500 mm Chuck : Collet Chuck Max Turning Diameter: 366 mm Standard Turning Diameter: 275 mm Max Turning Length: 510 mm Bar Capacity: 65 mm Swing Over Bed: 923.8 mm Swing Over Cross Slide: 755 mm Axis Travel X-Axis: 260 mm Z-Axis: 590 mm Y-Axis: ±50 mm (100 mm total) Spindle Max Spindle Speed: 5,000 RPM Spindle Nose: JIS A2-6 Through-Spindle Bore: 73 mm Spindle Motor: 15 / 15 / 11 kW Turret & Tooling Turret Type: BMT (Built-in Motor Turret) Tool Stations: 16 Max Live Tool Speed: 6,000 RPM Live Tool Torque: 29 Nm Turret Index Time: 0.2 seconds Feed Rates Rapid Traverse (X / Z): 30,000 mm/min Rapid Traverse (Y): 10,000 mm/min Tailstock Tailstock Travel: 564 mm Spindle Diameter: 80 mm Taper: MT4 Live Centre Automation Workpiece Unloader: Yes Max Workpiece Diameter: 80 mm Max Workpiece Length: 200 mm Max Workpiece Weight: 3 kg Electrical & Dimensions Power Requirement: 31.5 kVA Machine Dimensions (L × W × H): 2705 × 1922 × 2120 mm Machine Weight: 5,700 kg Included with Machine ✔ Selection of axial & radial driven toolholders ✔ Selection of static toolholders ✔ Extraction unit for plastic machining Additional Notes Used exclusively for dry plastic machining No coolant system fitted, however the machine is prepared for coolant installation and can be added at cost Specifications provided in good faith but not guaranteed Ideal Applications Medical device manufacturing Plastic & polymer machining Precision CNC turning & milling Aerospace, electronics & high-tolerance components This Mori Seiki NL2000Y/500 CNC Lathe represents a rare opportunity to acquire a premium Japanese turning centre with an exceptionally clean usage history.

Condition: used, functionality: fully functional, Herbert 9C-30 Turret Lathe Type of chuck: 4 jaw Diameter over bed (Max): 762mm Diameter over cross slide (Max): 535mm Dedpeyudgvofx Ag Reur Diameter in front of cross slide (max) : 737mm Length between chuck face & turret face (Max): 1505mm Travel of turret: 1066mm Diameter of hole through spindle: 125mm

Condition: excellent (used), Year of construction: 2009, functionality: fully functional, Technical details faceplate diameter 1800 mm swing diameter 2000 mm turning height 1270 / 1120 mm Control SIEMENS 840 D workpiece weight max. 5000 kg ram head dimension 250 x 250 mm table turning speeds 1 - 320 U/min cross rail - adjustment 400 mm ram head - cross travel (X) -2770 / +2275 mm ram head - vertical travel (Z) 1250 mm c-axis 360° (0,001°) deg milling drive 37 kW turning speed range - milling 10 - 3000 U/min power capacity - table 100 kW Torque 31784 Nm feed range (X/Z) 0,1 - 15000 mm/min weight of the machine ca. 55 t Additional information Used CNC vertical lathe for turning, drilling and milling First machine installation in the year 2011. Max. workpiece diameter: 2040 mm Max. workpiece height: 1270 mm Ram stroke: 1250 mm Max. workpiece weight: 5000 kg (per pallet/chuck) Table speed range: 1.0 - 320 rpm Table drive motor: 100 kW Drilling and milling spindle: 37 kW Crossbar travel: 2 steps of 200 mm each Total electrical connection value: 218 kVA CNC control: Siemens 840 D Number of NC axes: 4 (X, Z, C, crossbar adjustment) Travels: X-axis: -1650 to + 2165 mm Z-axis: 1250 mm Rapid traverse X- Z-axis: 15 m/min Number of tool magazine spaces: 80 spaces in the chain magazine, of which 60 x HSK 100 and 20 x Capto C6 Disc magazine 12-pos. for rotary holders and attachment heads Coolant system with filter and circulation unit Chip conveyor Oil-mist-extractor 1 pallet with jaws, diameter 1800 mm 1 hydraulic chuck with base jaws, diameter 1800 mm Various drilling and milling heads 2 measuring probes Several turning tool holders Special feature: Pallet changer with two stations, equipped with a face plate Ø1800 mm and a six-jaw lever compensation chuck with mechanical centrifugal force compensation Ø1800 mm. Note: The machine is in a pit. Condition description: The cross roller bearing on the Carnaghi was replaced about half a year ago. The Siemens components in the control cabinet were also completely replaced at the end of 2023. The machine also has a measuring probe for tool measurement and an external Renishaw measuring probe for workpiece measurement. As a special feature, the machine also has a measuring probe installed on the Z-axis (Z1-axis). This brings an advantage in terms of accuracy and time, as the tool does not have to be put down for measuring. However, it is currently shut down and should be overhauled when it is put back into operation. The machine also Dujdpfsyzy Tysx Ag Rjr has a Rotomors six-jaw lever compensating chuck with centrifugal force compensation, which was completely overhauled in 2020/21.

Condition: used, Year of construction: 2003, Mazak Integrex E-410H Multi-Tasking Lathe with Mazatrol 640M Pro Control, Serial No. 164385 (2003). Country of Origin: Japan Dodex T Df Dspfx Ag Rsur Please note: Toolholders/Tooling photographed in the toolchanger will not be supplied with this machine. Any available tooling will be a specifically described. Please Note: This lot is located in Birmingham, UK. A charge of £4,500 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. All/Any tooling is being offered as specifically described.

Condition: good (used), functionality: fully functional, grinding depth: 210 mm, center height: 510 mm, spindle speed (min.): 9,000 rpm, spindle speed (max.): 15,000 rpm, grinding length: 1,800 mm, rotational speed (max.): 15,000 rpm, rotational speed (min.): 9,000 rpm, Spindle Speed Min: 9.000 Rpm / Max: 15.000 Rpm Centre height Min: 230 mm / Max: 510 mm Spindle stroke 210 mm Horiz. Table size 700 x 1.000 mm Table stroke 1.800 mm Featured with : - Feed on table - Feed on hor. Movement - Cooling unit Dujdeyg Hduepfx Ag Rer - Safety doors

Condition: good (used), Year of construction: 2008, functionality: fully functional, turning diameter over cross slide: 648 mm, turning length: 1,300 mm, turning diameter: 1,016 mm, spindle bore: 102 mm, spindle speed (max.): 2,400 rpm, travel distance X-axis: 432 mm, travel distance Z-axis: 1,118 mm, spindle motor power: 30 W, rotational speed (max.): 2,400 rpm, Equipment: rotational speed infinitely variable, Centre distance: 1.300 mm Swing over bed: Ø 1.016 mm Swing over cross-slide: Ø 648 mm Spindle speed: 2,400 rpm Bar capacity: ø102 mm Turret: 10 stations live tooling Control: Haas CNC control Dusdpfxsyut Dwo Ag Rsr C-axis: 0–360° X-axis travel: 432 mm Z-axis travel: 1,118 mm Supplied with: Live tools Chip Conveyor Hydraulic chuck Toolpresetter Machine user manuals Country of origin: United States Motor power: 30 kW Machine (L×W×H): 380 × 233 × 220 cm Machine weight: 11.500 kg

Condition: good (used), functionality: fully functional, grinding length: 500 mm, grinding wheel diameter: 400 mm, total width: 1,700 mm, total length: 2,300 mm, total height: 1,700 mm, grinding diameter: 300 mm, distance between centers: 500 mm, Grinding length: 500 mm Grinding diameter: 300 mm Grinding wheel diameter: 400 mm Featured with: - Steady - Grinding wheels Country of origin: Germany Dsdpfxeyg E Ths Ag Rour Machine LxWxH: 2300 x 1700 x 1700 mm Machine weight: 3500 kg

Condition: good (used), Machining diameter max: 36 mm Maximum spindle speed: 6300 rpm Dusdpfxstrvzxj Ag Ror No. of Spindles: 2 Controller: Traub TX8i Toolchanger 1: No. of tools: 12 positions X-axis travel: 50 mm Z-axis travel: 50 mm Toolchanger fronside: No. of tools: 7 positions Speeds: 150 - 3000 Rpm 300 - 6000 Rpm Max. diameter: 40 mm X-axis travel: 370 mm Z-axis travel: 250 mm Toolchanger backside: No. of tools: 5 Speeds: 150 - 3000 Rpm 300 - 6000 Rpm Max. diameter: 40 mm X-axis travel: 73 mm Barfeeder: FMB Turbo 5-42 Barlength: 3200 mm Bardiameter: 5 - 42 mm Country of origin: Germany Machine LxWxH: 3400 x 1300 x 1700 mm Machine weight: 4000 kg

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 Dsdjw Sm U Dspfx Ag Rjur 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 - 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: good (used), Year of construction: 2008, functionality: fully functional, turning length: 750 mm, turning diameter: 590 mm, spindle bore: 78 mm, spindle speed (max.): 3,000 rpm, Equipment: documentation/manual, Centre distance: 750 mm Swing: 590 mm over bed / 375 mm over slides Spindle speeds: 25 - 3.000 rpm Spindle bore: 78 mm Revolver: 10 Platze Controller: Siemens 810D Shopmill Featured with: - Double footpedals - Chipconveyor - Machine manuals Djdpfx Aoxmvzujg Rjur Country of origin: Z. Korea Motor power: 25 kW Machine weight: 6.000 kg Machine LxWxH: 300 x 180 x 190 cm

Condition: used, Year of construction: 1965, total length: 7,750 mm, total width: 1,400 mm, total height: 1,600 mm, Empty weight: 5.000 kg - Year: 1965 Duodpfxoyy Ntmj Ag Ror - Documentation available: No - CE certificate present: No - Serial number: 16628 - Drive system: Conventional - Power [kW]: 13.7 - Centre height [mm]: 300 - Swing over bed [mm]: 600 - Carriage turning diameter [mm]: 300 - Distance between centres [mm]: 6000 - Bed width [mm]: 400 - Spindle bore [mm]: 65 - Min. spindle speed [rpm]: 22.4 - Max. spindle speed [rpm]: 1000 - Options: Fixed steady, Quick-change tool post, Removable bed, Travelling steady, Three-jaw chuck - Swing over removable bed [mm]: 900 - Transport dimensions: 7750mm x 1400mm x 1600mm (l x w x h) - Transport weight [kg]: 5000kg Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, Technical details: faceplate diameter: 1000 mm swing diameter: 1600 mm turning height: 1200 mm main drive: 75 kW faceplate speeds from - to: 7 - 800 U/min milling motor: 25 kW milling head speed: 7 - 3000 U/min milling spindle - taper: ISO 50 cross rail adjustment - vertical: 800 mm ram head dimension: 240 x 240 mm weight of the machine ca.: 40 to dimensions of the machine ca.: 9 x 7,8 x 6,0 m Machine general overhould in 2004 and equiped with Siemens 840 D control - tool changer rack magazine Djdpsvb Dcasfx Ag Rsur - C-axis, live tooling, - Transmit function electronical Y-axis - angular milling head - complete splash housing - coolant device, chip conveyor *

Condition: used, Technical details: faceplate diameter: 1800 mm swing diameter: 2000 mm turning height: 1170 mm z-axis: 1000 mm cross rail adjustment - vertical: 800 mm Dujdpfxovb Db No Ag Rer faceplate speeds:: 2,5 - 280 workpiece weight: 12 t feeds: 1 - 6000 mm/min max. torque on the faceplate: 50000 Nm total power requirement: 85 kW weight of the machine ca.: 41 t dimensions of the machine ca.: 5,6 x 4,8 x 4,6 m Machine retrofit and overhould in 2005 with SIEMENS 840 D powerline control - 6 jaw hydraulic power chuck - tool changer for 12 tools - chip conveyor, coolant attachment, splash housing - various tool holders *

Condition: good (used), Year of construction: 2014, Swing over bed 660mm, maximum machining diameter 380mm, maximum machining length 510mm, bar capacity 80mm, spindle speed 4,000rpm, Duedpjyt H Ruofx Ag Rsr 12 station turret, Mazatrol Smart control, swarf conveyor, & 3 jaw chuck

Condition: good (used), For sale: BERTHIEZ vertical lathe type BMF 200, a heavy-duty industrial machine designed for machining large-diameter components. 🔧 Technical specifications: • Brand: BERTHIEZ (France) • Model: BMF 200 • Serial number: A 34004 • Table diameter: approx. 2000 mm • Machinable diameter: Ø 2200 to 2450 mm • Machinable height: approx. 1600 to 2000 mm • Admissible table load: approx. 10 to 20 tonnes • Configuration: double-column (gantry-style) • Feeds: automatic Djdpsyzl Szsfx Ag Reur • Origin: made in France

Condition: used, Year of construction: 1999, Price: On request Dsdpfx Agownhyhe Rsur - Year: 1999 - Documentation available: Yes - CE marking present: Yes - CE certificate present: No - X-axis travel [mm]: 900 - Y-axis travel [mm]: 550 - Z-axis travel [mm]: 360 - Table width [mm]: 790 - Table depth [mm]: 380 - Max. grinding wheel diameter [mm]: 400 - Max. spindle speed [rpm]: 3400 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, total height: 1,550 mm, total length: 1,600 mm, total width: 1,200 mm, Empty weight: 2.100 kg - Documentation available: No - CE marking present: Yes - CE certificate present: No - Drive system: Conventional - Power [kW]: 4.5 Dusdpfx Ajwnh Tzeg Rjr - Distance between centres [mm]: 480 - Centre height [mm]: 100 - Transport dimensions: 1600mm x 1200mm x 1550mm (l x w x h) - Transport weight [kg]: 2100kg - Transport packages [pcs.]: 2 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, operating hours: 11,562 h, total height: 1,900 mm, total length: 5,600 mm, total width: 2,000 mm, Empty weight: 8.500 kg Price: On request - Documentation available: No - CE certificate present: No - Operating hours: 11562 - Drive system: Conventional - Power [kW]: 30.0 - Centre height [mm]: 500 - Swing over bed [mm]: 1000 - Distance between centres [mm]: 3000 - Spindle bore [mm]: 105 - Min. spindle speed [rpm]: 2.24 - Max. spindle speed [rpm]: 450 - Transport dimensions: 5600mm x 2000mm x 1900mm (l x w x h) - Transport weight [kg]: 8500kg Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Duedpfowp H Efox Ag Ror Lukas van Rossum

Condition: used, Year of construction: 2004, total height: 1,500 mm, total length: 1,100 mm, total width: 1,100 mm, Empty weight: 750 kg Price: On request - Year: 2004 Dujdpfx Ageyplvne Rer - Documentation available: No - CE certificate present: No - Serial number: 9010522 - Transport dimensions: 1100mm x 1100mm x 1500mm (l x w x h) - Transport weight [kg]: 750kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, Year of construction: 1998, total length: 2,600 mm, total width: 1,500 mm, total height: 2,100 mm, Empty weight: 1.500 kg - Year: 1998 Duedpfx Ajx Ad Uzjg Rjr - Documentation available: Yes - CE marking present: Yes - CE certificate present: No - Serial number: P30162 - Drive system: Teach-in - Control system brand: Fanuc - Power [kW]: 7.5 - Centre height [mm]: 200 - Swing over bed [mm]: 400 - Carriage turning diameter [mm]: 245 - Distance between centres [mm]: 1250 - Bed width [mm]: 320 - Spindle bore [mm]: 55 - Min. spindle speed [rpm]: 15 - Max. spindle speed [rpm]: 2500 - Options: Three-jaw chuck, Removable bed - Swing over removable bed [mm]: 585 - Transport dimensions: 2600mm x 1500mm x 2100mm (l x w x h) - Transport weight [kg]: 1500kg - Transport packages [pcs.]: 2 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, Year of construction: 1970, total height: 1,700 mm, total length: 1,400 mm, total width: 900 mm, Empty weight: 500 kg - Year: 1970 - Documentation available: No - CE certificate present: No - Serial number: CH - Control: Conventional - Motor power: 1.4kW - Transport dimensions: 1400mm x 900mm x 1700mm (l x w x h) - Transport weight [kg]: 500kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Duedoyxqzcjpfx Ag Rsr Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, Year of construction: 1976, Cylindrical cylinder grinding machine Model: Int+Ext Conventional Manufacturer: PONAR  Type: RUP 28x1000 Center distance: 1000mm Center height: 155mm Grinding diameter: 310mm Travel x: 1000 Table dimension length: 1650 Table dimension width: 150 Transport dimensions Dimensions part 1: 2900x1600 Weight: 1800kg Dimensions part 2: 1200x800x600 Weight: 100kg Dimensions part 3: 1250x1210x1440 Weight: 150kg Dimensions part 4: 1200x800x11001 Weight: 200kg - Year: 1976 - Documentation available: No - CE certificate present: No Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Dujdpfx Agswnhfdo Rjr Lukas van Rossum

Condition: used, total height: 1,700 mm, total length: 6,000 mm, total width: 1,700 mm, Empty weight: 6.500 kg Price: On request Lathe metal lathe Model: Conventional Dodpfxewnhy Ij Ag Reur Manufacturer: TOS Type: SUI 63 Serial number: 407620860 Center distance: 4000mm Center height: 325mm Turning diameter: 630mm Spindle passage: 80mm Spindle speed: 11,2-1800 rpm Machine-afmeting: 6000x1700x1700mm Machine weight: 6500kg - Documentation available: No - CE certificate present: No - Drive system: Conventional - Centre height [mm]: 325 - Swing over bed [mm]: 630 - Distance between centres [mm]: 4000 - Spindle bore [mm]: 80 - Min. spindle speed [rpm]: 11.2 - Max. spindle speed [rpm]: 1800 - Transport dimensions: 6000mm x 1700mm x 1700mm (l x w x h) - Transport weight [kg]: 6500kg Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum