Used Dunli Ymf.a4T-630S-7Fiiis01 for sale (1,447)

Condition: good (used), Year of construction: 2000, operating hours: 1,18,400 h, functionality: fully functional, machine/vehicle number: 182854, clamping force: 2,500 kN, overall weight: 14,000 kg, heating capacity: 23.1 kW (31.41 HP), type of input current: three-phase, For sale is an Arburg 630 S 2500-130 injection moulding machine. The machine is in good condition and ready for immediate operation. Technical data: Year of manufacture: 11/2000 Place of production: Made in Germany Clamping force: 2500 kN Operating hours: 118,400 h Injection unit: 1300 (shot volume/capacity) Total machine weight: 14,000 kg Operating voltage: 400 V (3 ~ AC) Frequency: 50 Hz Heating capacity: 23.1 kW Pump motor: 45.0 kW Total connected load: 68.1 kW Transport and loading can be organised throughout Europe for an additional charge, upon request. Prices are subject to VAT. Inspection possible by appointment. Please contact us—our team will be happy to assist you. Trade-in or exchange possible! Machinery purchase & sale PURCHASE / SALE OF PRODUCTION & METALWORKING MACHINES AND MORE. Iodpfoyx Daxsx Apmsaw Are you looking for a high-quality yet affordable metalworking machine for your production? Or do you want to sell yours? For more information or contact options, please visit our website.

Condition: new, Year of construction: 2025, Dimensions (L/W/H) 1280x2120x2050 mm Iajdpfx Aov A Hfgopmjw Weight 1950 kg Total power requirement 21 kw

Condition: new, Year of construction: 2025, Dimensions (L/W/H) 1200x1200x1400 mm Iaodpfxjvz Ekfo Apmow Weight 1100 kg Total power requirement 7,5 kw

Condition: new, Year of construction: 2025, Dimensions (L/W/H) 1200x1100x1160 mm Weight 950 kg Iajdpov A E H Nsfx Apmew Total power requirement 8 kw

Condition: ready for operation (used), Year of construction: 2007, A complete machining line consisting of four Toyoda machining centers, Palltec transport and automation system, filter systems, chip conveyors and coolant supply systems is available. 1) 4x CNC horizontal machining center Toyoda FH 630 SX, year of manufacture 3/1: 2007/2008, control: Fanuc 31i, pallet dimensions X/Y: 630mm/630mm, travel X/Y/Z: approx. 1050mm/900mm/1050mm, max. workpiece diameter: 1170mm, max. workpiece height: 1250mm, max. pallet load: 1500kg, spindle taper: BT50, speed: 6000rpm, tool magazine: Fanuc FTS 330, tool positions: 330, operating hours range: approx. 65000h-76000h. All machining centers have the same tool management, but different operating hours within the above-mentioned range. 2) Rail-guided-vehicle system RGV Palltec FPA 630, year of manufacture: 2006. 3) Master computer system with Windows 7 Professional, interfaces: CNC/RGV/peripherals. The production line has all necessary peripheral equipment such as filter systems, chip conveyors and coolant supply systems from the manufacturers Knoll and Hyfra. Documentation available. An on-site inspection is possible. Isdpfxjy Ey Tuo Apmjaw

Condition: new, Year of construction: 2024, functionality: fully functional, nominal power: 90 kW (122.37 HP), rotational speed (max.): 5,760 rpm, rotational speed (min.): 1,592 rpm, total height: 3,437 mm, total length: 3,275 mm, total width: 2,500 mm, type of cooling: air, compressed air connection: 6 bar, Equipment: rotational speed infinitely variable, The impact mills of the REKORD 212-630 series in the welded housing design are robust universal mills for demanding industrial applications in continuous operation. Iaedpfx Apox Ac Rbsmew ● Size: 630 mm (nominal rotor diameter) ● Mill housing: Heavy-duty welded stainless steel housing, pressure surge resistant up to 10 bar (AISI316L), with product-contacting surface finish Ra ≤ 1.6 μm for easy cleaning, equipped with a pivoting door and safety interlock type HAAKE (key transfer system); monitoring of housing and bearing temperature, vibration monitoring ● Mill inlet: JACOB pipe; DN 150 mm ● Mill outlet: Ground material and air discharge downward into a suction hopper, optimized for connection to the conveying line to the total separator ● Mill drive: Belt drive, three-phase motor, energy efficiency class IE3 (manufacturer SIEMENS), 90 kW, 3~ 400 V, IP55; suitable for operation with frequency inverter ● Sealing materials: Silicone; PTFE, sealing material conforms to EU and FDA food hygiene standards ● Grinding elements: Pin rotor: 4 pin rows, pin Ø 7 mm (wear-reduced); Pin stator: 3 pin rows without external pin circle, pin Ø 7 mm ● Bearings: Designed for toughest operational demands in continuous industrial service, heavy-duty bearing housings with temperature and vibration monitoring (early detection of potential bearing failure and avoidance of hot surfaces) ● Inert gas supply/monitoring for shaft seal on product chamber side ● Run monitoring to detect operating faults ● Machine frame: The complete unit – mill, drive with motor, tensioning rails, belt drive, and belt guard – is installed ready for use on a sturdy machine frame with height-adjustable machine feet Main components of the offered system include: ● Product feed/transfer from customer’s upstream process and transfer to a rotary valve (certified ATEX protection system); ● Industrial pin mill type REKORD 630-SSt with welded housing and ground surfaces; ● Product separator with discharge rotary valve (certified ATEX protection system); ● Pneumatic conveying line with air inlet/outlet, including suction blower; ● WITHOUT control system, without frequency inverter

Year of construction: 2022, condition: new, functionality: fully functional, The machine is NEW. Price €240,000 gross. Isdewdtd Depfx Apmsaw

Condition: used, Rotary vane vacuum pump Manufacturer: Becker Type: U4.630 SA/K or F/K Vacuum: 3 mbar - 0.5 mbar Motor: 15 kW Condition: used, tested! Overhaul of the unit is offered separately! Iodpfx Aednu T Repmjaw Includes: oil filling, vacuum intake filter Delivery time: in stock!

Year of construction: 2001, condition: ready for operation (used), Distance between centers: 3000mm, swing over bed/cross slide/in bed gap: 630mm/350mm/880mm, spindle bore: 77mm, speed: 1600rpm, power: 7.5kW, tailstock: MT5, quill stroke: 250mm. Machine dimensions X/Y/Z: approx. 5050mm/1300mm/1450mm, weight: approx. 3500kg. Includes three-jaw chuck, fixed and travelling steadies, as well as a quick-change tool holder. An on-site inspection is possible. Ijdpfew Nq R Rex Apmjaw

Condition: refurbished (used), Year of construction: 1992, functionality: fully functional, machine/vehicle number: 305.537.1992, warranty duration: 12 months, Le Meccanica CLM630ST 630/150 die and rolls Isdpfx Aov Sq Rlepmjaw Force Feeder with a 0.9KW motor Currently undergoing full refurbishment - Seals &bearings included Colour - customers option Customer to arrange collection and freight

Condition: used, Year of construction: 1973, total height: 1,000 mm, total length: 13,900 mm, total width: 3,000 mm, Colour: Orange Empty weight: 2.500 kg - Year: 1973 - Documentation available: No Iajdpfxezmffis Apmjw - CE certificate present: No - Serial number: 371508 - Lifting capacity [kg]: 6300 - Lifting height [mm]: 8000 - Span [mm]: 13500 - Girder: Single - Crane control: Fixed cable - Transport dimensions: 13900mm x 3000mm x 1000mm (l x w x h) - Transport weight [kg]: 2500kg - 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: 2000, total length: 4,100 mm, total width: 1,900 mm, total height: 3,000 mm, Colour: Blue Weight: 20.000 kg Price: On request - Year: 2000 - Documentation available: No - CE marking present: Yes - CE certificate present: No - Serial number: 80960 - Drive system: CNC - Control system brand: HACO - Control system type: BC50 Graphics - Power [kW]: 22.5 - Number of axes [pcs]: 3: Y1+Y2+X - Press force [ton]: 300 - Max. working width [mm]: 3600 - Column gap [mm]: 3100 - Throat depth [mm]: 500 Ijdpfxozmaa Ij Apmoaw - Backgauge depth [mm]: 850 - Max. stroke [mm]: 250 - Crowning system: Mechanical - Punch holder: Standard - Tool holder type: European-style - Tools included: Yes - Transport dimensions: 4100mm x 1900mm x 3000mm (l x w x h) - Transport weight [kg]: 20000kg - 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: ready for operation (used), Year of construction: 2014, operating hours: 19,865 h, travel distance X-axis: 1,050 mm, travel distance Y-axis: 900 mm, travel distance Z-axis: 1,000 mm, controller manufacturer: FANUC, controller model: Series 31i-model B, total height: 3,422 mm, total width: 7,297 mm, table load: 1,500 kg, overall weight: 18,000 kg, spindle speed (max.): 10,000 rpm, number of slots in tool magazine: 40, tool weight: 30,000 g, product length (max.): 3,780 mm, number of axes: 4, This 4-axis DOOSAN NHP6300 was manufactured in 2014. It features an impressive X-axis travel of 1,050 mm, Y-axis travel of 900 mm, and Z-axis travel of 1,000 mm. The machine includes a maximum pallet load of 1,500 kg and a tool capacity of 40 tools. If you are looking to get high-quality machining capabilities, consider the DOOSAN NHP6300 horizontal machining centre we have for sale. Contact us for further details. • Distance from top of pallet to spindle center: 100–1,100 mm • Distance from pallet center to spindle nose: 75–975 mm • Pallet • Type: Indexing (rotary) • Indexing angle: 1° • Size: 630 × 630 mm • Maximum load: 1,500 kg • Mounting pattern: 24 × M16 × P2.0 {5–18H8} • Maximum workpiece size (Ø × H): Ø1,050 × 1,350 mm • Spindle • Speed: 10,000 rpm (options: 6,000 / 15,000 rpm) Iajdpfx Aszh Hpfjpmsw • Taper: ISO 50 (7/24 taper) • Maximum torque: 489 Nm (options: 599.8 / 350 Nm) • Feed rates • Rapid traverse (X/Y/Z): 60 / 60 / 60 m/min • Maximum cutting feed: 30,000 mm/min • Automatic Pallet Changer (APC) • Number of pallets: 2 • Type: Rotary shuttle • Change time: 12 s • Drive: Servo motor • Automatic Tool Changer (ATC) • Tool interface: BT / CT / DIN (HSK optional) • Magazine type: Chain • Standard capacity: 40 tools (options: 60 / 90 / 120 / 150) • Matrix magazine capacity: 196 / 256 / 316 / 376 tools • Maximum tool diameter: Ø130 mm (Ø125 mm per note) • Maximum tool diameter with adjacent pockets empty: Ø320 mm • Maximum tool length: 630 mm (HSK: 700 mm) • Tool-to-tool change time: 2.0 / 3.5 s • Chip-to-chip change time: 5.0 / 6.5 s • Motor power and utilities • Spindle motor: 25 / 30 kW (options: 22 / 30, 50 / 55 kW) • Compressed air supply: 0.54 MPa • Tank capacities • Coolant: 925 l • Lubrication: 7.2 l Additional equipment • Fastems automation system Technical Specification Taper Size ISO 50

Condition: used, Transformer, transformer, converter, three-phase autotransformer, three-phase transformer, three-phase transformer, single-phase transformer, control transformer, safety transformer -Manufacturer: Schad Sintec, transformer type ISK-ST 630 -Input: 400V / 1.7A / 50-60Hz -Output: 230V / 2.74A / 630VA -Technical data: see photo nameplate -Dimensions: 130/120/H155 mm Iaedpspk Iqtsfx Apmow -Weight: 10.1 kg

Condition: good (used), Year of construction: 1999, functionality: limited functionality, cutting force: 60 t, power: 294.2 kW (400.00 HP), empty load weight: 60,000 kg, mount diameter: 12,000 mm, filling weight (max.): 2,00,000 g, filling weight (min.): 10,00,000 g, total width: 5,000 mm, total length: 1,20,000 mm, total height: 6,000 mm, overall weight: 60,000 kg, cutting length (max.): 8,000 mm, feed rate X-axis: 15 m/min, feed rate Y-axis: 15 m/min, feed rate Z-axis: 15 m/min, feed length X-axis: 50,000 mm, pressure: 6.5 bar, We offer this Copex BR5325 scrap shear for sale, in good condition, manufactured in 1999. Machine reference: BR5325 Axle load (loaded): 41200 kg Inlet pressure (loaded): 6.5 bar Isdpfx Apszfqrxemjaw Outlet pressure (loaded): 5.9 bar Inlet pressure (unloaded): 6.5 bar Cushion pressure axle 1 (loaded): 3.8 bar Cushion pressure axle 2 (loaded): 3.8 bar Cushion pressure axle 3 (loaded): 3.8 bar If you have any further questions or require additional information, please do not hesitate to send us a message or call us.

Condition: excellent (used), Inkjet printers Videojet 1520/1560/1630 Iedpsvmdw Uofx Apmoaw different models available Type 1520 Type 1560 Type 1630 diverse consumables available (1 pallet) Total of 25 units!!! Sale only as a complete lot!!! Very good condition, directly from production!!!

Condition: ready for operation (used), Year of construction: 2020, operating hours: 4,726 h, spindle speed (max.): 15,000 rpm, travel distance X-axis: 900 mm, controller manufacturer: HEIDENHAIN, controller model: TNC 640, spindle motor power: 51,000 W, table load: 500 kg, number of slots in tool magazine: 90, number of axes: 5, This 5-axis Quaser UX630 was manufactured in 2020. It features a powerful HSTec HM-15A spindle with a speed of 15,000 rpm and a robust rotary/tilt table capable of handling workpieces up to Ø630 × 540 mm. The machine is equipped with a 90-position tool magazine and includes advanced options like a Renishaw 3D workpiece probe. If you are looking to get high-quality machining capabilities, consider the Quaser UX630 universal machining centre we have for sale. Contact us for further details. • 5-axis simultaneous machining; B-axis ±120°, C-axis 360° continuous • Spindle: HSTec HM-15A built-in, HSK-A63, 162 Nm • Rotary/tilt table: Peiseler (Germany), Direct Drive, Ø480 mm; max load 500 kg; max workpiece Ø630 × 540 mm • Control: Heidenhain TNC 640 with options DCM, Kinematics Opt, LAC, DNC (Opt. 18) • Tool magazine: 90 positions (HSK-A63) • Through-spindle coolant: 20 bar • Heidenhain linear scales on all axes • Spindle operating hours: 4,726 Iaodpfxjza E U Sj Apmow • Note: Dust extractor shown in images is excluded Additional equipment • Renishaw 3D workpiece probe • Blum laser tool measurement • Schunk Vero-S zero-point clamping system • NP clamping system • BMO robot interface installed and programmed (robot not included) • HSK63 tooling included

Condition: ready for operation (used), Year of construction: 2018, travel distance X-axis: 4,000 mm, travel distance Y-axis: 1,970 mm, travel distance Z-axis: 455 mm, number of axes: 5, spindle motor power: 12,000 W, spindle speed (max.): 24,000 rpm, This 5-axis FORMAT4 Profit H350 1630 was manufactured in 2018. It features a robust construction with a heavy-duty welded steel frame and dual-driven moving gantry. The machine offers an impressive X-axis travel of 4000 mm, Y-axis travel of 1970 mm, and Z-axis travel of 455 mm. If you are looking to get high-quality CNC machining capabilities, consider the FORMAT4 Profit H350 1630 CNC processing center we have for sale. Contact us for further details. • Working hours: 6,442 h • Condition: Not rebuilt – without warrantyGeneral • Construction: Heavy-duty welded steel frame, reinforced • Gantry: Dual-driven moving gantry • 5-axis simultaneous machining • Control software: WoodFlash CNC • Remote service package via internet connectionWorking area and axes • Working area: X 3000 mm / Y 1550 mm / Z clearance 250 mm • Drives: X helical rack & pinion; Y/Z precision ball screws • Guideways: Linear on all axes • Lubrication: Automatic central systemMain spindle (5-axis electrospindle) • Type: Cardan-joint 5-axis spindle, right-hand rotation • Power: 12 kW (S6), full power around 12,000 rpm • Speed: 1,000–24,000 rpm • Tool interface: HSK F63 • Cooling: Liquid cooling; ceramic bearings with air cooling • Integrated aggregate holder; electrically controlled extraction hood • Max tool weight: 6 kg • Max saw blade diameter: 350 mmTool magazines Isdpfx Apoy Uyihemsaw • Linear magazine: 12 positions, left side of frame; separate aggregate pickup; max tool Ø 250 mm; max tool length 240 mm • Rotary disc magazine: 18 positions on moving gantry; supports drills and aggregates; max tool Ø 250 mm; max tool length 280 mmDrilling unit (DH18 6H 1S) • Vertical spindles: 12 total (7 in X, 5 in Y) • Horizontal spindles: 6 total (4 in X, 2 in Y) • Drilling stroke/depth: up to 70 mm; tool holder size 10 mm; individually controlled spindles • Integrated grooving saw: Ø 120 mm; max body thickness 5 mm; up to 7,500 rpmVacuum and clamping • Console table: 6 consoles with front/rear stops; wireless dual-circuit vacuum; vacuum cup height 100 mm • Pneumatic console locking; programmable pneumatic stops; 4 movable side stops • Reinforced support arms (40 kg each) • Vacuum pump capacity: 90 m³/h @50 Hz; 108 m³/h @60 Hz • Additional vacuum connection for template work • Controlled compressed air for frame clamps • Independent vacuum/air switching per consoleCNC software and control • WoodFlash package: CNC control, tool database (Tecno Manager), program editor, 3D preview, DXF import, CAD functions (rotate/mirror/scale/copy), engraving, pocket milling, parametric and absolute/incremental programming, machining optimization • CNC control panel: Full machine operation, program creation/editing, tool/workpiece management, manual commands, vacuum/air/safety monitoring • Mobile operator terminal: 24" LED monitor, keyboard, mouse, USB • Feed speed control terminal: Manual feed override potentiometer; variable feed during machiningSafety • CE safety system; safety mats (instead of light curtain) • Emergency stop system • Safety fence on left side; door safety monitoring • Vacuum and compressed air monitoring sensors Additional equipment • External enable switch • Protected cable chain system • Additional A and C axis locking system • Tool service kit • Polish software installation package • Polish operating manual • Saw blade changing station on gantry

Condition: excellent (used), Gas burner G3/1D Weishaupt Iaedpfx Apei Dh Icsmjw 7 units available Output: 630 kW Year of manufacture: 1997 to 2004 Мы говорим по-русски! (We speak Russian!) Please arrange an inspection by phone. Preferential sale to dealers, businesses, or for export. All information is subject to change without notice, errors and prior sale excepted. The seller assumes no liability for typographical or data transmission errors. We would be happy to purchase your used boiler or burner! We will also take care of all formalities. Loading is possible.

Condition: excellent (used), Year of construction: 2013, turning diameter over cross slide: 640 mm, spindle bore: 63 mm, turning length: 2,000 mm, quill diameter: 100 mm, total length: 5,200 mm, total width: 2,100 mm, total height: 2,100 mm, overall weight: 8,200 kg, rotational speed (min.): 2,500 rpm, three-jaw chuck diameter: 315 mm, CNC Lathe VDF BOEHRINGER - DUS630Ti MACH-ID 9628 Make: VDF BOEHRINGER Type: DUS630Ti Control: Heidenhain Manuel Plus Year: 2013 Steady rest fixed 400 mm Steady rest open 120 mm ROHM 3 chuck  Ø 315 Multi Fix tool holder system with inserts Manuel Plus controller Iaodpfx Aey T Hlmopmsw Swing over bed Ø: 640mm Swing over cross slide Ø:385mm DBC Turning Length: 2000mm Spindle bore: 62mm Spindle power: 22kW Tailstock spindle Ø: 100Ø Stroke pinole: 190mm Spindle taper: 5Mk Speeds / ranges: 2500Rpm Feed rate X-Axis: 5000mm/min. Feed rate Z-Axis: 10000mm/min. Length: 5200mm Width: 2100mm Height: 2100mm Weight: 8200kg Please Note: The information on this page has been obtained to the best of our ability and belief, and from the manufacturers where possible. It is given in good faith, but its accuracy can not be guaranteed. Accordingly, it will not form a representation or constitute contractual terms. We advise you to check any vital details!

Condition: used, Year of construction: 2012, fuel type: electric, Used scissor lift for sale: Year: 2012. Working height: 10 meter Weight: 2430 kilo. Dimensions: 2,50 x 0.80 meter. Platform is 90 cm extenable. Power: elektric. Iasdeu Iyh Nspfx Apmew Capacity: 227 kg. Price: € 5.000,-. ex VAT We have more in stock!

Condition: excellent (used), Year of construction: 2008, control type: CNC control, controller manufacturer: ESA TOUCH PANEL, pipe length (max.): 4,000 mm, bending radius (max.): 180 mm, bending radius (min.): 10 mm, overall weight: 3,700 kg, total length: 6,000 mm, total width: 1,800 mm, total height: 1,800 mm, Tube bending machine Transfluid - DB630 A3 CNC MACH-ID 9616 Make: Transfluid Type: DB630 A3 CNC Control: ESA TOUCH PANEL Year: 2008 Max.Tube Ø: 30mm Min. Tube Ø: 4mm Max. Wall thickness:4mm Max. Bending radius:180mm Min. Bending radius:10mm Max. bending length:4000mm Ijdey N Rv Ijpfx Apmjaw 3e dimsion bending:Yesmm/min. Number of tools: 10,12,15,16,18,20,22,28 Length: 6000mm Width: 1800mm Height: 1800mm Weight: 3700kg Please Note: The information on this page has been obtained to the best of our ability and belief, and from the manufacturers where possible. It is given in good faith, but its accuracy can not be guaranteed. Accordingly, it will not form a representation or constitute contractual terms. We advise you to check any vital details!

Condition: new, - Dimensions: 770x630x430 mm - Removable cast iron cooking grates, dimensions (660x470 mm). - Heating provided by stainless steel burners with stabilized flame, located below stainless steel 'special' caps. - Lower stainless steel water tray (dual function): 1. Collects cooking juices and reduces smoke during cooking. 2. Releases steam for exceptional cooking results. - Stainless steel construction. Iodpfx Aoy Tpchjpmeaw

Condition: used, This listing is for schott duran 56301218 Chromatography Column. Iajdpjzb N E Refx Apmsw The unit is in full working condition and ready for immediate use. This glass chromatography column from Schott Duran offers durability, visibility, and precise separation capabilities for routine laboratory applications.

Condition: ready for operation (used), Year of construction: 2016, travel distance X-axis: 925 mm, travel distance Y-axis: 1,050 mm, travel distance Z-axis: 600 mm, table load: 600 kg, spindle speed (max.): 12,000 rpm, spindle motor power: 26,000 W, number of axes: 5, This 5-axis Okuma MU 6300 V was manufactured in 2016. It features impressive X-axis travel of 925 mm, Y-axis travel of 1,050 mm, and Z-axis travel of 600 mm. The machine has a maximum load capacity of 600 kg and a C-axis table diameter of 630 mm. If you are looking to get high-quality machining capabilities, consider the Okuma MU 6300 V vertical machining centre we have for sale. Contact us for further details. • Table/C-axis diameter: 630 mm Ijdpfx Aoy Dc Nispmsaw • Max machinable dimensions: Ø 830 x 550 mm • C-axis rotation: 360,000 positions / 360° continuous • A-axis rotation: +90° to -120° • Table–spindle distance: 60 – 660 mm • Rapid feed (X/Y/Z): 50 m/min • Max working feed: 50,000 mm/min • Positioning accuracy (X/Y/Z): 0.004 mm (Std JIS) • Repeatability (X/Y/Z): mm (Std JIS) • Spindle taper: BT50 Big Plus • Tool magazine: Matrix, 98 positions (expandable to 166) • Axis feedback: X–Y–Z optical scales • Operational hours: Power on 25,683 h; Operating 10,364 h; Cutting 9,209 h • Included control/software options: 5-axis continuous Super-NURBS kit, Center tool programming, Tool length compensation, DNC-DT connection, Tool orientation command Additional equipment • Mayfran MT10 chip conveyor • Renishaw TS27R tool setter • Renishaw RMP60 workpiece probe • 5-axis calibration kit • Shower wash • Pallet changer ready (preparation) • Industry 4.0 kit (registered 2026) Technical Specification Taper Size BT 50