Used Giustina Cylindrical Grinding Machine - Universal for sale (65,699)

Condition: used, Year of construction: 1999, grinding diameter 350 mm grinding length 1000 mm centre height 175 mm Control FANUC 18i-TA GENERALÜBERHOLT Foto von ähnlicher bereits gelieferter Maschine - Schleifscheibenausrüstung LINKS 500mm - Schleifscheibenausrüstung RECHTS 400mm - Innenschleifeinrichtung 120mm für riemengetriebene Innenschleifspindeln (standard) - CNC-Steuerung FANUC 18i-TA - vorbereitet für Messsteuerung Marposs kombiniert (Minialsar, Positionar)mit E5N - B-Achse - Kel-Set - hydraulischer Pinolenrückzug - Mikroverstellung am Reitstock - Werkstückspindelstock mit schwenkbarem Unterteil - Schleifscheibenausrüstung LINKS 500mm - Schleifscheibenausrüstung RECHTS 400mm - Innenschleifeinrichtung 120mm für riemengetriebene Innenschleifspindeln (standard) - CNC-Steuerung FANUC 18i-TA - vorbereitet für Messsteuerung Marposs kombiniert (Minialsar, Positionar)mit E5N - B-Achse Duodpfx Amoy U N Hpo Tsw - Kel-Set - hydraulischer Pinolenrückzug - Mikroverstellung am Reitstock - Werkstückspindelstock mit schwenkbarem Unterteil

Condition: used, Year of construction: 2010, grinding diameter 350 mm grinding length 1000 mm centre height 175 mm Control Fanuc 310is CNC control GE Fanuc 310is Hand panel for CNC control GE Fanuc Wenger loader optional Turned part with automatic indexing 1° Grinding head UR 1-2-3 Grinding wheel equipment left 500 x 80 mm Grinding wheel equipment right 400 x 63 mm Operating unit for one high-speed internal grinding spindle MFV / MFZ High-frequency internal grinding spindle MFN 1090 Coolant supply through the workpiece spindle Dressing unit on the upper table Swivelling holder for PCD diamond plates Basic module for KEL-TOUCH gate sensor and KEL-BALANCE balancing devices KEL-TOUCH lead sensor for universal grinding head variants R / RS / UR / URS KEL-TOUCH on the workpiece headstock for internal and external grinding Preparations for Movomatic ESZ 400 or Marposs P7 ME measuring controls Preparation for external filters Cooling lubricant switch-off for table devices Full casing emulsion Emulsion sanding mist extraction system Maintenance unit for additional pneumatic functions Preparation for KEL-VITA gantry loader Dujdpjy U N Hijfx Am Tsw KEL-POS, MOVOMATIC: C25 measuring probe Hydraulic preparation for arobo bezel

Condition: excellent (used), with internal grinding attachment Center height 125 mm Dsdjy H Dq Hjpfx Am Tjuw Distance between centers 1000 mm Table size 1650 x 145 mm Grinding wheel 400 x 50 x 127 mm Grinding wheel speeds 1'500 - 2'200 rpm Grinding head turnable 270° Grinding wheel 225 x 20 x 76.2 mm Misc. accessories MARCELS MASCHINEN AG

Condition: excellent (used), with internal grinding attachment Duodpsiu E Trsfx Am Tjw Center height 125 mm Distance between centers 600 mm Grinding wheel 400 x 40 x 127 mm Misc.accessories MARCELS MASCHINEN AG

Condition: refurbished (used), Machine totaly reconditioned With DRO Center height 175 mm Distance between centers 1000 mm Grinding wheel 400 x 50 x 127 mm + 225 x 20 x 76.2 mm Duedpfx Amewhk Uuj Tew Grinding wheel speeds 1'500-2'200 rpm With internal grinding attachement Misc. accessories MARCELS MASCHINEN AG

Condition: used, MYFORD MG 12 HM UNIVERSAL CYLINDRICAL GRINDING MACHINE MAKE MYFORD, MADE IN ENGLAND MODEL MG 12 HM YEAR MID 90s SWING 127.0 mm LENGTH 305.0 mm PLUS HYDRAULIC MOVEMENT DROP DOWN INTERNAL Duedjy Nmg Ajpfx Am Tjw INFINITELY VARIABLE SPEED CONTROL ON THE WORK HEAD SPARE SWIVELLING WORK HEAD RANGE OF TOOLING

Year of construction: 1979, condition: refurbished (used), functionality: fully functional, TECHNICAL DETAILS Maximum height: 125 mm + 50 mm height adjustment Distance between centers: 1,000 mm Grinding wheel › Diameter: 400 mm › Width: 50 mm › Bore: 127.0 mm Angle adjustment: 270° Workpiece spindle head: 20 - 400 rpm Spindle taper: 5 MT Tailstock taper: 3 MT Table angle adjustment: 8° Table speed: continuously variable up to 6.0 m/min Internal grinding spindle with 60,000 rpm External grinding wheel motor: 4.0 kW Workpiece spindle motor: 1.5 kW Machine weight: 3,100 kg Overall machine dimensions: 2,860 × 1,680 × 1,670 mm (L × W × H) EQUIPMENT & SCOPE OF DELIVERY • Machine completely refurbished • New control cabinet & new wiring diagram • New motor & frequency inverter for the working head • 2-axis DRO • Coolant tank with paper filter • Geometry manufactured according to the Kellenberger protocol • Internal grinding spindle • Numerous accessories Duedpfx Ask H Hp Nom Tew Please refer to the test report for the machine in the appendix below.

Condition: used, Year of construction: 1997, grinding diameter 350 mm grinding length 1000 mm centre height 175 mm weight of the machine ca. 6 t Verkauf erfolgt mit Funktionsprüfung Auf Wunsch mit neuer Tischgeometrie gegen Aufpreis C-Achse zum Polygonschleifen B-Achse mit Handschwenkung Schleifscheibendurchmesser links 400mm Schleifscheibendurchmesser rechts auf Anfrage Duedpfxey R Ed No Am Tsw Innenschleifeinrichtung Reitstock mit Feinverstellung

Condition: used, Year of construction: 1995, grinding diameter 350 mm grinding length 1000 mm centre height 175 mm Control Kelco 90 weight of the machine ca. 6 t Verkauf erfolgt mit Funktionsprüfung Auf Wunsch mit neuer Tischgeometrie gegen Aufpreis B-Achse stufenlos Schleifscheibendurchmesser links und rechts 400mm Innenschleifeinrichtung Reitstock mit Feinverstellung Sinuslineal am WSS Kel-Set Dujdpsy R Ed Asfx Am Tjw Passive Lämgspositionierung Movomatic TMP91

Condition: used, Year of construction: 2026, grinding diameter 350 mm grinding length 1500 mm centre height 175 mm grinding wheel diameter 400 mm grinding wheel width 50 mm bore 127 mm MK5 work piece spindle speed 20-400 U/min grinding head swivelling 360 ° grinding spindle head - swivable 180 + - ° grinding spindle speed 1500,1700,2200 U/min 0,001-0,030 mm/Ø 0-0,95 mm/Ø ± 6 ° longitudinal feed of the table 1750 mm table speeds 0,02-6 m/min Dodpfx Amoy R Edvs Touw 130 kg 130 inkl. Spannugkg kg 80 mm total power requirement 6,5 kW weight of the machine ca. 2,9 t dimensions of the machine ca. 5,6 x 2,0 m Komplett überholt mit Umbau auf Technik der modernsten Ausführung. -Neuer Schaltschrank -Modernes Hydraulikaggregat -Moderner Werkstückspindelstock -Moderner Reitstock mit Feinverstellung -Moderner Steuerblock,Zustellung,Getriebekasten -Innenschleifvorrichtung für Spindeln mit 80mm Durchmesser -Schwenkwinkelanzeige Schleifspindelstock -Schleifwinkelanzeige Obertisch -Luftabhebung Obertisch -Reitstock mit Feinverstellung -Sinuslineal -stufenlos regelbare Schleifspindeldrehzahl 70-100% -stufenlos regelbare Innenschleifspindeldrehzahl 70-100% -Auf Wunsch Umbau auf separaten Innenschleifspindelantrieb mit Kühlung und regelbarer Innenschleifspindeldrehzahl 0-100% -Spritzschutztüren z-Achse Optionen: Schwenkwinkelanzeige Werkstückspindelstock Schwenkwinkelanzeige Schleifspindelstock Schwenkwinkelanzeige Obertisch Teilraumverkleidung in X sowie Sonderwünsche

Condition: excellent (used), Year of construction: 2001, grinding diameter 350 mm grinding length 1000 mm centre height 180 mm Control Fanuc 180-T grinding wheel width 80 (100) mm grinding wheel diameter 450 mm power capacity - grinding motor 7,5 kW table speed -stepless- 10 m/min grinding spindle head - swivable ° turning speed range - workpiece spindle 10 - 800 U/min grinding head swivelling 0 - 15 ° workpiece weight max. 120 kg taper in tailstock-quill MK 4 tailstock quill stroke 35 mm voltage 400 V total power requirement 18 kW weight of the machine ca. 6,5 t dimensions of the machine ca. 3,75 x 2,25 x 1,80 m band filter unit 1,75 x 1,20 x 0,80 m - Serial No.6769 - Universal Cylindrical Grinding Machine Dujdpfx Ashkunxsm Tew with internal grinding spindle - CNC-controlled B-Axis for automatic. swivel of spindle head

Condition: good (used), Year of construction: 2013, grinding diameter 390 mm grinding length 650 mm centre height 200 mm total power requirement 46 kW Djdow Inr Nspfx Am Tsuw weight of the machine ca. 6 t dimensions of the machine ca. 3x3x2,4 m Universal cylindrical grinding – Type WUG21 (W27) Grinding length 650 mm EMAG Weiss stands for high-end technology in universal cylindrical grinding between centres. With its CNC-controlled WUG 21 machines, EMAG Weiss offers the right solution for virtually every user. --> Technical data Max. grinding length: 650 mm --> Centre height: 200 mm --> External grinding diameter: 1 – 390 mm --> Max. weight flying MK4: 100 kg --> Max. workpiece weight between centres: 250 kg --> Feed: --> X-axis travel: 480 mm --> Z-axis travel: 1.150 mm --> Workpiece headstock --> Tailstock --> Grinding spindle headstock --> Coolant device, manufacturer HYFRA, --> Belt filter, manufacturer Knoll, type KF 200 - year of manufacture 2012, --> Oil mist filter, manufacturer Cobaron

Condition: ready for operation (used), cCenter height: 130 mm center width: 500 mm Djdjvf Dmtopfx Am Tjuw grinding wheel dimensions: 127/300 x 40 mm grinding wheel speeds: 2 rpm electrical connection: 380 V, approx. 4 kW space required: 1730 x 1100 x 1550 mm weight: approx. 1750 kg

Condition: used, Year of construction: 2000, grinding length 800 mm centre height 150 mm Control FANUC grinding wheel size max. 400 x 63 x 127 mm workpiece weight 120 kg engine output 7,5 kW turning speed range - grinding wheel 45 m/s m/s swivelling range +45/-15° Grad work piece spindle speed 22-313 / 51-750 U/min workpiece spindle swivable +/- 90 ° tailstock quill taper MT MK 4 x-travel 355 mm z-travel 4,0 mm Working speed 0 + 7,5 m/min weight of the machine ca. 4,0 t dimensions of the machine ca. BTH 3,7 x 2,2 x 1,9 m -incl. Coolant system -incl. Lynette -incl. Sharpening diamond -incl. open Lynette -incl. 3 pieces of grinding discs Djdpou Hag Nsfx Am Teuw -incl. 3 pieces of flanges -incl. Internal grinding spindle attachments

Condition: used, Year of construction: 1998, centre height 125 mm centre distance 400 mm Control FANUC 21i Capstan diameter max. 406 mm Dusdpfx Aexwdwfjm Tjw wheel dimensions 406 x 127 x 40 mm workpiece weight 30 kg longitudinal slide -travel 483 mm cross slide - travel 254 mm total power requirement max. 20 kVA weight of the machine ca. 4,0 t dimensions of the machine ca. 3,0 x 2,0 x 2,1 m including 2 Pcs. internal grinding spindle incl. B axis 1° Hirt, controlled incl. C-axis incl. Quick-Set Probe including Sensitron including Magnetic Jaw including hydraulically foldable dresser including other small accessories including documentation without a coolant system, as it was previously connected to a central unit Power On hours approx. 71,000 h Spindle hours approx. 25,900 h

Condition: good (used), Year of construction: 1984, Used TOS KAMENICEK model BUC63A x 3000 Universal cylindrical grinding machine. YEAR OF MANUFACTURE: 1984. MACHINE FORMERLY INSTALLED AT ROLLS ROYCE PLC IN DERBY UK. IMMEDIATELY FOR SALE AND NOW LOCATED IN BELGUIM WHERE IT CAN BE INSPECTED. SPECIFICATION Max Swing 630 mm Distance between centres 3000 mm Workhead swivel – towards wheelhead only 90 deg. mm Work spindle bored taper No. 6 M.T. Length of stroke of tailstock barrel 70 mm Tailstock barrel taper No. 6 M.T. Spindle nose clamping Din 55021 Swivelling of wheelhead + 30 deg – 10 deg Length of adjustment by re-circulating ball screw 290 mm Additional length of adjustment 250 mm Length of rapid feed 90 mm Length of infeed setting per each rev. of handwheel, measured on work diameter Dusdpjh U Rznofx Am Tsw 0.5 mm Grinding wheel dia. X width X bore 750 x 80 x 305 mm Min. dia. of worn grinding wheel 570 mm Max. face width of grinding wheel 125 mm Rate of table traverse – steplessly variable 0.5-0.6 m/min Table traverse per 1 rev of handwheel 8 mm Swivelling of table +/- 5 deg. Max. permissible weight of work between centres 2500 kg Max. permissible weight of workpiece in chuck with overhang. (including weight of chuck) 150 kg Wheel spindle speeds (2) 840,970 rpm Grinding wheel surface speed 33 m/sec Work spindle speeds – int. var. in 2 ranges 8-50, 50-315 rpm Drive – total power required rated 31 kva Output of workhead motor 3 kw Output of wheelhead motor Electrics 15 kw 415V ,3Ph,50Hz Equipped with:- Additional wheel flanges, coolant system with clarifier and splash guards. FEATURES AND EQUIPMENT – Swivel Round Internal Grinding Attachment

Condition: as good as new (ex-display), Year of construction: 2025, Offered is a external cylindrical grinding machine EMAG WPG 7 - external cylindrical grinding at the highest level and on the smallest footprint. Footprint of the WPG 7 is only 1,800 x 2,400 mm. The machine is perfect for machining small shafts or pinions. The WPG 7 can be loaded manually as well as by automated solutions (such as chain conveyors and linear gantry). CONTROL Fanuc 0i Dodpfx Amotlrkbs Teuw TECHNICAL DATA Workpiece length: max. 250 mm grinding Ø: max. 80 mm Center height: 100 mm Center length: 380 mm Workpiece weight: max. 30kg Grinding wheel Ø: max. 500x 80 mm Price, delivery time and equipment of the machine according to agreement.

Condition: new, Year of construction: 2024, functionality: fully functional, Universal CNC cylindrical grinding machine for high-precision internal & external cylindrical grinding MBF 453U from the MaiBase platform The machine is a completely new development with strong dimensions in a small space! Technical data: Center width: 430 mm Standard center height: 200 mm Grinding length: 400 mm Grinding wheel diameter: 500 mm Z-axis adjustment path: 550 mm X-axis travel: 385 mm Dimensions and weight: 2200 x 2500 x 2400 mm // 6500 kg Equipment of the machine: - FANUC Oi-F Plus control system - Grinding headstock (swiveling) with 15kW motor spindle Duedstrf Smjpfx Am Tsw - Workpiece headstock MK5 - Tailstock MK3 with 20 mm stroke (optional 60 mm / 120 mm) - Handwheel for manual axis movement - Z-axis - X-axis - C-axis - B-axis - Glass scales for X- and Z-axis - Internal grinding spindle FISCHER UJ80 - Internal grinding spindle (GMN motor spindle) optional - Dressing spindle attached to the workpiece headstock for rotary dressing - Automatic door drive

Condition: excellent (used), FANUC 21i-T Control Center Height 175 mm Distance between centers 1000 mm Grinding head B-axis 1° Grinding wheel 500 x 63 x 203 mm Grinding wheel speeds -1'500 rpm Internal grinding attachement 60'000 rpm Work piece spindle head C-axis 0.001 ° Dsdpfx Amsyabt De Touw Measuring probe Automatic balancing attachement Wheel dresser Misc. accessories MARCELS MASCHINEN AG

Condition: used, Year of construction: 1980, Technical details: grinding diameter: 380 mm grinding length: 1000 mm centre height: 180 mm grinding wheel diameter: 400 mm max. workpiece weight between centres: 250 kg total power requirement: 10 kW weight of the machine ca.: 4,1 t dimensions of the machine ca.: 3 x 2 x 1,6 m Dedpfx Aowy Ri Nem Touw with internal grinding attachment with fixed and swivelling headstock with coolant tank *

Condition: used, Year of construction: 1977, grinding diameter 350 mm grinding length 1000 mm centre height 175 mm grinding wheel diameter 400 mm grinding wheel width 50 mm bore 127 mm MK5 work piece spindle speed 20-400 U/min grinding head swivelling 360 ° grinding spindle head - swivable 180 + - ° grinding spindle speed 1500,1700,2200 U/min 0,001-0,030 mm/Ø 0-0,95 mm/Ø ±8 ° longitudinal feed of the table 1300 mm table speeds 0,02-6 m/min 130 kg 130 inkl. Spannugkg kg 70 mm total power requirement 6,5 kW weight of the machine ca. 2,5 t dimensions of the machine ca. 4,2 x 2,0 m Neu geliefert an Universität. 2018 übernommen. Dann komplett bei BEMA gewartet und an an Einmannbetrieb geliefert. Nun wird die Maschine nochmal gewartet und Tischgeometrie neu hergestellt. 2-Achsen-Digitalanzeige Fagor nachgerüstet. -Reitstock mit Feinverstellung -Innenschleifeinrichtung -Kühlmittelanlage Dsdpfsynmpgex Am Tsuw Zubehör auf Anfrage

Condition: used, grinding diameter 350 mm grinding length 600 mm centre height 175 mm grinding wheel diameter 400 mm grinding wheel width 50 mm bore 127 mm MK5 work piece spindle speed 20-400 U/min grinding head swivelling 360 ° grinding spindle head - swivable 180 + - ° grinding spindle speed 1500,1700,2200 U/min 0-9,99 mm/Ø 0-9,99 mm/Ø ±10 ° longitudinal feed of the table 1100 mm table speeds 0,02-6 m/min 130 kg 130 inkl. Spannung kg cross travel max. 270 mm 80 mm tailstock quill taper MT 3 quill travel 30 mm total power requirement 6,5 kW weight of the machine ca. 3,05 t dimensions of the machine ca. 4 x 2 m Overhauled according to Kellenberger guidelines including new, modern and future-proof control system. Photo of already delivered machine in centre distance 1000mm. -Operation via the touch panel is extremely simple. -The symbols on the control panel are practically identical to the original original control system, so there is no need for familiarisation. -Diagnostic function with display of PLC messages and digital I/O -Dressing function can be extended or changed at the customer's request. -Orientated spindle stop of the workpiece spindle possible on request. -New maximum infeed of 40 mm can be extended on request. -Digital display in 2 axes. Resolution x-axis 0.5my Options: -Encoder with digital display in the workpiece headstock -Rotary encoder with digital display in the grinding headstock (no height adjustment with spindle possible) with spindle possible) -New stable internal grinding device diameter 80mm or 100mm with height adjustment. -Increase of the centre height to max. 225mm -Speed control for the grinding spindle Included: -Operating tool -Clamping tube for chuck Further accessories on request. The x-axis of the machine has an electronically controlled infeed system with stepper motor drive. Hydraulic longitudinal and rapid traverse table movement. Versatile application in production for external cylindrical and internal internal grinding or for external, face and internal grinding in one clamping clamping of individual parts. Possible options: -Semi-automatic dressing cycles for external and internal grinding -automatic dressing compensation. -Measuring control Dodpfx Ajuxft Eom Tsuw

Condition: used, grinding diameter 250,350,450 mm grinding length 1500 mm centre height 125,175,225 mm grinding wheel diameter 400 mm grinding wheel width 50 mm bore 127 mm MK5 work piece spindle speed 20-400 U/min grinding head swivelling 360 ° grinding spindle head - swivable 180 + - ° grinding spindle speed 1500,1700,2200 U/min 0,001-0,030 mm/Ø 0-0,95 mm/Ø Dedpfx Asd Ih Dvom Teuw ± 6 ° longitudinal feed of the table 1750 mm table speeds 0,02-6 m/min 130 kg 130 inkl. Spannugkg kg 80 mm total power requirement 6,5 kW weight of the machine ca. 2,9 t dimensions of the machine ca. 5,6 x 2,0 m As the world’s leading company in Kellenberger overhaul and retrofit we are not only able to deliver machines in a quality similar to a new machine and with warranty, but we can also offer you the service for your machines. Geometrisch überholt und neu lackiert mit original Elektrik jedoch neuer WSS Antrieb und Regler in Drehstromtechnik. Optional mit Spritzschutztüren und bedienpult vorne siehe Foto 1000U. -Digitalanzeige in 2 Achsen. Auflösung x-Achse 0,5my Optionen: -Schwenkwinkelanzeige Obertisch -Drehgeber mit digitaler Anzeige im Werkstückspindelstock -Drehgeber mit digitaler Anzeige im Schleifspindelstock (keine Höhenverstellung mit Spindel möglich) -Neue stabile Innenschleifvorrichtung Durchmesser 80mm oder 100mm mit Höhenjustierung. -Erhöhung der Spitzenhöhe auf max. 225mm Inklusive: -Bedienwerkzeug -Spannrohr für Futter weiteres Zubehör auf Anfrage. Die Werkzeugmaschine entspricht zum derzeitigen Zeitpunkt nicht den grundlegenden Sicherheits- und Schutzanforderungen wie in der BetrSichV 2015 genannt. Eine Anhebung des erforderlichen Mindest-Schutzzieles ist mittels einer Gefährdungsbeurteilung nach BetrSichV zu ermitteln.

Condition: used, grinding diameter 250,350,450 mm grinding length 1500 mm centre height 125,175,225 mm grinding wheel diameter 400 mm Dusdpjd Ih Dwsfx Am Tow grinding wheel width 50 mm bore 127 mm MK5 work piece spindle speed 20-400 U/min grinding head swivelling 360 ° grinding spindle head - swivable 180 + - ° grinding spindle speed 1500,1700,2200 U/min 0,001-0,030 mm/Ø 0-0,95 mm/Ø ± 6 ° longitudinal feed of the table 1750 mm table speeds 0,02-6 m/min 130 kg 130 inkl. Spannugkg kg 80 mm total power requirement 6,5 kW weight of the machine ca. 2,9 t dimensions of the machine ca. 5,6 x 2,0 m Overhauled with geometric KELLENBERGER protocoll. Pictures of a similar 1000mm machine. -New electrical cabinet -Modern workhead -Modern tailstock -Modern hydraulic power unit -air lift for grindingwheeel head -modern internal grinding device Extension of the upper table swivel to 10° Optional: -Swivel angle digital read out upper table -Swivel angle digital read out workhead -Swivel angle digital read out grindingwhell head -Splash protection door z-axis -Splash protection housing x-axis etc. ADDITIONAL: -we can offer service for the machines -we can offer technical advice -we can offer training -we have spare parts -we have accessories

Condition: used, grinding diameter 250,350,450 mm grinding length 600 mm centre height 125,175,225 mm grinding wheel diameter 400 mm grinding wheel width 50 mm bore 127 mm MK5 work piece spindle speed 20-400 U/min grinding head swivelling 360 ° grinding spindle head - swivable 180 + - ° Dsdpjd Ih D Nefx Am Tsuw grinding spindle speed 1500,1700,2200 U/min 0,001-0,030 mm/Ø 0-0,95 mm/Ø ±10 ° longitudinal feed of the table 900 mm table speeds 0,02-6 m/min 130 kg 130 inkl. Spannugkg kg 70 mm total power requirement 6,5 kW weight of the machine ca. 2,2 t dimensions of the machine ca. 3,1 x 2,0 m As the world’s leading company in Kellenberger overhaul and retrofit we are not only able to deliver machines in a quality similar to a new machine and with warranty, but we can also offer you the service for your rhauled with geometric KELLENBERGER protocoll -2-axis DRO -Paper filtration Die Werkzeugmaschine entspricht zum derzeitigen Zeitpunkt nicht den grundlegenden Sicherheits- und Schutzanforderungen wie in der BetrSichV 2015 genannt. Eine Anhebung des erforderlichen Mindest-Schutzzieles ist mittels einer Gefährdungsbeurteilung nach BetrSichV zu ermitteln.