Used Kellenberger Precision Cylindrical Grinding Machine for sale (65,623)

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 with internal grinding attachment with fixed and swivelling headstock with coolant tank * Bjdswy Ri Njpfx Akljlh

Condition: excellent (used), Year of construction: 2012, functionality: fully functional, Distance between centres: 2000 mm Blodpfx Aeynubwokljh Centre height: 230 mm Max. swing diameter: 455 mm Max. workpiece weight between centres: 800 kg Max. workpiece weight cantilever (incl. clamping device): 200 Nm X-axis traverse movement: Electromechanical drive with ball screw X-axis traverse movement: Cross feed speed 0.01 – 8,000 mm/min X-axis traverse movement: Setup via electronic handwheel or direction push button X-axis traverse movement: Measuring system with glass scale, internal resolution 0.0005 mm Z-axis table movement: Table feed speed 0.01 – 10,000 mm/min Workpiece spindle motor: 3.0 kW at 0–300 rpm Workpiece spindle taper: MK5 and KK5 Control: SIEMENS 840 D solution line Operation via dialog-guided interface Electronic handwheel available Grinding spindle motor: 11 kW Peripheral grinding wheel speed: 35 (50) m/s Standard grinding wheel: 600 x 80 x 203.2 mm Right face grinding wheel: 300 x 40 x 127 mm Internal grinding spindle by customer specification Tailstock taper: MK4 Tailstock operation: manual (hydraulic) Tailstock foot switch with quill stroke 40 mm and MK5 Card index / data management for workpiece data, up to 100 grinding wheels and 40 dressers Cylindricity error correction program-controlled for all dressable grinding wheels Dressing from the workpiece spindle headstock or from the tailstock Dressing allowances automatically compensated Optional integration of diamond form rolls or swivel dressers Various dressing strategies available in the control system Integrated CAD program (optional) Import of existing CAD data (optional) B-axis infinitely adjustable Fast and repeatable positioning Available grinding spindle configurations: External grinding wheel left External grinding wheel left + right face grinding wheel External grinding wheel left + external grinding wheel right External grinding wheel left + internal grinding spindle External grinding wheel left + right face grinding wheel + internal grinding spindle Production machine Can be equipped with loading portal and in-process measurement control Modular system / options: Manual or fully stepless automatic B-axis swiveling Number and configuration of grinding spindles (external and internal) Positionar (Z-length measuring sensor) Spark-out detection In-process measurement control Controlled C-axis (non-circular grinding) Hydrostatic guideway in X-axis (infeed axis) Swivel dresser, diamond form roll Servo-controlled tailstock with programmable holding force Network integration Data backup Remote maintenance Universal paper band filter Compact air purification unit Grinding cycles: X-plunge grinding Z-plunge grinding Z-longitudinal grinding Angular plunge grinding Multi-X-plunge grinding Contour grinding Angular oscillation Positionar cycle Non-circular machining Face grinding Z-peel grinding Auxiliary function The machine was commissioned at the end of 2012 Modernizations 2022 Repair grinding table: €255.40 Removal of tailstock: €1,174.50 Removal of tailstock, 2nd technician: €868.50 Installation of overhauled tailstock: €1,875.00 Installation + overhaul tailstock: €12,073.42 Total documented work volume: €16,246.82

Condition: excellent (used), After repair in 2022. Swing mm 400 Distance between centres mm 1000 Grinding wheel: diameter x hole x width mm 500 x 80 x 203 Taper in spindle Morse 5 Max. workpiece weight between centres kg 300 Grinding spindle revolutions r.p.m. 1720, 1980 Bedpfjyzpycjx Aklolh Cross motion of grinding spindle mm 415 Motor output kW 9,5 Total input kVA 16 Machine dimensions: length mm 4890 width mm 2320 Machine weight kg 5150

Condition: repair required (used), TSCHUDIN HTG400 sold as a parts donor. Mechanically, the machine is in good condition; electrically, it must be checked and repaired. The drive motors are functional. The same applies to the internal cylindrical grinding machine TRIPET AR 200 with internal grinding attachment and face grinding attachment. Both machines are being offered for parts. Bljdpfx Akjyt E Iroloh

Condition: used, Technical details: grinding length: 600 mm centre height: 180 mm swing dia.: 360 mm workpiece weight: 80 kg max. dia. of grinding wheel: 500 mm grinding wheel width: 80 mm grinding wheel hole diameter: 203,2 mm peripheral speed: 45 m/sec Bedporkr U Esfx Aklelh There is also a 3200 liter coolant tank including cooling unit + fire extinguishing system. *

Condition: used, Year of construction: 2005, Technical details: grinding diameter: 20 mm grinding length: 20 mm max. workpiece diameter: 20 mm min. workpiece diameter: 1 mm grinding wheel diam. min/max.: 300-400 grinding wheel turining speeds: 2.000-7.000 U/min Weight: 950 kg Blodpfsvap S Dox Akljh dimensions: 1200 x 2100 mm

Condition: used, Year of construction: 2007, Technical details: weight of the machine ca.: 24 t dimensions of the machine ca.: 3900 x 3500 x 2500 m -the machine has no B axis -two grinding spindles with one grinding wheel each - The transport instructions can be found in the documentation (attachment). including Hoffmann KSM filter system Loading list available Operating data v. : Operating time: 21727 h / production time: 11960 h Machine documentation: 1 set of circuit diagrams, electrical plans, operating instructions Accessories: 2 replacement measuring heads Marposs S/500; prism supports Other: Hoffmann KSM filter system Machine condition: according to age, due to processing with emulsion Bljdpfex Aq Etox Akloh *

Condition: excellent (used), Year of construction: 1982, Max. grinding diameter: 400mm Max. grinding length: 2000mm Max. workpiece weight: 300kg YOM: 1982 Blsdpfxszbh Aze Akleh

Condition: used, Mechanical pull-down NC machine vice FRIBOSA type size B Precision machine vice, grinding vice, clamp Jaw width 100 mm Jaw height 34 mm Clamping width 0 to 130 mm Bedpeilx Ufjfx Aklslh guideway height 40 mm guideway length 270 mm - mechanical machine vice - Clamping range via trapezoidal spindle - Stable base body ground on all sides - Can be clamped horizontally, vertically or laterally Dimension L x W x H 310 x 100 x 77 mm weight: 10 kg good condition

Condition: as good as new (ex-display), Year of construction: 2024, functionality: fully functional, Working area Grinding length: 250 mm Centre height: 100 mm Workpiece weight: 30 kg Bedevz Snkspfx Aklslh Z-axis: 350 mm Table adjustment: 8 ° degrees X-axis: 190 mm Grinding spindle Grinding wheel diameter max.: 500 mm Grinding wheel width max.: 80 mm Grinding wheel bore: 127 (203) Grinding wheel motor power: 5.5 kW Peripheral speed: 50 m/s Grinding wheel protection cover: D500 x 80mm Workpiece spindle Speed: 1 - 2,000 rpm Workpiece spindle mount: MK4 Tailstock Tailstock quill mount: MK3 Tailstock quill stroke length: 30 mm Cylinder fine adjustment range: ± 0.04 Equipment Paper belt filter system Rinse gun Mechanical fume extraction

Condition: refurbished (used), Year of construction: 2020, Machine Type: Cylindrical Grinding Machine Manufacturer: Schaudt Maschinenbau GmbH Model: PS 4 Year of Original Manufacture: 1986 Renovation/Retrofit: 2020 Control System (Post-Retrofit): Siemens CNC SINUMERIK 840D General Specifications Application: External cylindrical grinding Grinding Method: Plunge, traverse, face grinding Control Type: CNC (Siemens retrofit in 2020) Machine Weight: Approx. 3,500 – 4,500 kg Bljdpsw Avrzofx Akloh Installation Area: Approx. 3.5 m x 2.0 m Workpiece Capacity Center Height: 180 mm Distance Between Centers: 1000 mm (varies by version) Max Workpiece Diameter: 360 mm Max Workpiece Weight: ~150 kg between centers Grinding Spindle Grinding Wheel Diameter: 400 mm Grinding Wheel Width: 50 mm Bore: 127 mm Peripheral Speed: Up to 45 m/s Spindle Drive Power: ~7.5 kW Spindle Speed Range: Up to 1,500 – 2,500 rpm (depending on wheel size) Headstock Type: Fixed or rotating spindle Speed Range (if motorized): ~30 – 500 rpm Taper: MK4 or similar Drive: AC Servo (post-retrofit) Tailstock Type: Manual or hydraulically actuated Quill Stroke: Approx. 50 mm Quill Diameter: ~75 mm Axes X-Axis (infeed): CNC-controlled Z-Axis (longitudinal): CNC-controlled Resolution: 0.001 mm Drive Type: Digital servo motors with ball screw Position Feedback: Absolute/Incremental linear encoders Coolant System Coolant Tank Capacity: Approx. 150 – 250 liters Coolant Pump: High-pressure, with filtration system Other Features (Post-Retrofit) Siemens HMI with touch interface Electronic handwheels (MPG) Updated safety system and enclosure New electrical cabinet with ventilation and cooling Optional AE sensor for gap detection or touch dressing

Condition: ready for operation (used), Year of construction: 1983, functionality: fully functional, machine/vehicle number: 8151, rotary table diameter: 800 mm, grinding height: 750 mm, workpiece weight (max.): 800 kg, total height: 4,100 mm, total width: 26,650 mm, total length: 44,000 mm, feed length Y-axis: 750 mm, feed length Z-axis: 550 mm, overall weight: 13,000 kg, grinding wheel diameter: 400 mm, disc diameter: 400 mm, grinding spindle speed: 1,460 rpm, grinding diameter: 800 mm, control cabinet width: 650 mm, type of input current: DC, control cabinet height: 1,900 mm, control cabinet length: 1,800 mm, spindle speed (max.): 1,800 rpm, spindle speed (min.): 1,460 rpm, table load: 900 kg, workpiece diameter (max.): 850 mm, grinding wheel width: 60 mm, table width: 1,240 mm, power: 35 kW (47.59 HP), rapid traverse X-axis: 2 m/min, rapid traverse Y-axis: 100 m/min, rapid traverse Z-axis: 2 m/min, space requirement height: 4,100 mm, space requirement length: 5,100 mm, space requirement width: 2,655 mm, Good day, For sale is a well-preserved and completely functional Sielemann cylindrical grinding machine for the following applications: surface grinding, internal grinding and external grinding. The machine has a swivel stand with 3 different sanding heads for the respective area of application. Complete machine documentation is available and can be presented upon inspection. The Sielemann offered here has always been serviced and maintained, most recently the components listed below were replaced: - 3x New weight compensation cylinders - 1x new hydraulic unit (complete) - New guideway covers - Revised rotary table group Technical data Machine length: 4.400mm Machine width: 2,655mm Machine height: 4.100mm Machine weight: 13.000Kg Control cabinet width: 650mm Control cabinet height: 1.900mm Control cabinet length: 1.800mm Grinding table diameter: 800mm Grinding table load capacity: 800kg Grinding table drive power: 0.21 - 14.5KW Grinding table speed: 100 1/min (both directions) Grinding table workpiece clamping: Magnetic clamping plate incl. T-slots Z-axis travel (grinding table): 550mm Maximum grinding height (Y): 750mm Lubrication pump Masch. Bed: 0,18KW Lubrication pump Masch. Column: 0,1KW Leak oil pump: 0,065KW Hydraulic pump: 1.5KW 1) External round grinding head Spindle drive power: 11KW Spindle speed: 1,450 1/min Grinding wheel: 400x50mm Cone grinding spindle mount: D=65mm Taper pitch: 1:5 Feed speed (Y): 100 mm/min 2) Internal round grinding head Spindle drive power: 5.5KW Grinding wheel: Variable Feed speed (Y): 100 mm/min 3) Flat-round sanding head Bsdpfx Akjrntirolslh Spindle drive power: 11KW Spindle speed: 1,800 1/min Grinding wheel: 400x50mm Cone grinding spindle mount: D=65mm Taper pitch: 1:5 Feed speed (Y): 100 mm/min Viewing appointments possible at short notice by arrangement !!! With kind regards R.Suckow / Managing Director UNITTOOL Werkzeugmaschinen GmbH 33758 Schloß Holte Stukenbrock Görlitzerstraße 9

Condition: like new (used), Year of construction: 2006, operating hours: 4 h, functionality: fully functional, machine/vehicle number: GB010168, workpiece weight (max.): 80 kg, type of input current: three-phase, workpiece diameter between centers: 200 mm, workpiece length between centers: 500 mm, grinding wheel width: 355 mm, spindle speed (max.): 2,000 rpm, overall weight: 2,800 kg, input frequency: 50 Hz, input voltage: 400 V, Brandnew (showroommodel) cilindrical grinder Brand: Supertec Bodpfx Akew Edwdolslh TYPE: G20P-50C Servicenumber: 10144 Machine weighs: 2800 kgs Dimensions: 2280 + 2280 + 1940 mm Please find the detailed specs in the pictures. If there are any questions please do not hesitate to contact AMTC and ask for Joost. Preferably during office hours from 8 AM to 16:00 PM We can can arrange transport with and external company.

Condition: used, Year of construction: 1994, grinding diameter 300 mm grinding length 600 mm Bjdpfx Aksyqv A Uolslh workpiece weight 80 kg grinding wheel diameter 508 mm Control Siemens type 840 C grinding spindle speed 45 m/s power capacity - grinding motor 7,5 kW z-axis 865 mm x-axis 250 mm centre distance 1000 mm number of turns of spindle head 1-800 U/min weight of the machine ca. 4,85 t The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1964, 200 mm mechanical ja weight 1,5 t ja Blodpfjyacnvex Akljh

Condition: defective spare-parts repository (used), We offer you: Cylindrical grinding machine Bsdpsxxxrtefx Aklelh Manufacturer: Karstens For spare parts The main spindle grinding head is missing Accessories, illustrated tools, and clamping devices are only included if stated in the additional information. Subject to changes and errors in technical data and details, as well as prior sale!

Condition: used, Year of construction: 2007, grinding diameter ----- mm Bljdpfx Aswgi Rfjkleh grinding length --- mm centre height --- mm oil mist extraction ja serial number 2342-11

Condition: used, Year of construction: 1990, grinding diameter 360 mm grinding length 1000 mm Blodpsxbh Ebsfx Akloh centre height 180 mm max. workpiece weight between centres 250 kg Maschine mit sehr wenigen Betriebsstunden nach Überholung beim Karstens Fachbetrieb. Zustellsteuerung Jetter Digitalanzeige Innenschleifvorrichtung Reitstock mit Zylindrizitätsfeinverstellung Hydraulische Reitstockpinole Etc... Luftkissenschnellverstellung Schleifspindelstock

Condition: used, Year of construction: 1995, grinding diameter 350 mm grinding length 1000 mm centre height 175 mm Completely overhauled in 2013 Heavy duty workpiece headstock tailstock Without chuck and without bezel in the photo Kelco 90 control Blodpfx Akjxyadaslsh The machine can be viewed in operation at the customer's premises from 2025 up to and including January 2026.

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: Bledpfxsuxft Es Akloh -Semi-automatic dressing cycles for external and internal grinding -automatic dressing compensation. -Measuring control

Condition: used, Year of construction: 1987, grinding diameter 200 mm grinding length 400 mm centre height 100 mm Geometrically overhauled and repainted With internal grinding device Accessories on request Bljdpfx Akovw Duusljh The machine can be viewed in operation at the customer's premises from 2025 through January 2026.

Condition: used, Year of construction: 2000, grinding diameter 450 mm grinding length 1000 mm centre height 225 mm Photo of machine already delivered in similar scope: -major maintenance -New table geometry -partial painting of the interior grinding wheel equipment LEFT 400x63x127mm (standard) grinding wheel equipment RIGHT 300x40x127mm Internal grinding unit Ø120mm for HF spindles CNC control KELCO 120 C-axis for non-circular grinding. Kel-Poly B-AXIS: CNC-controlled B-axis KELCO 120: v constant 35m/s or 45m/s High-frequency internal grinding spindle Operating unit for MFV and MFZ spindles Bledpfjxzk Nijx Akleh Hydraulic quill retraction for the tailstock NO micro-adjustment on the tailstock Spring-loaded quill insert Top table cooling Standard workpiece headstock MK 5 DIN 55026 size 5" Micro-adjustment for the standard workhead Dressing device on the lower table Active longitudinal positioning KELPOS, MARPOSS, mounted on the grinding head Tool measuring system KELSET, MARPOSS MARPOSS gate sensor Measuring control MARPOSS Minialsar prepared Paper belt filter

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 + - ° 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 Compete overhauled machine according to Kellenberger new machine protocoll -Digitalanzeige in 2 Achsen. Auflösung x-Achse 0,5my Optionen: Bodpfx Aod Ih D Rsklelh -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 -Drehzahlregelung für die Schleifspindel Inklusive: -Bedienwerkzeug -Spannrohr für Futter -Spitze MK3 -Spitze MK5 -Futterflansch 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 350 mm grinding length 1000 mm centre height 175 mm dimensions of the machine ca. 3,6/3,5 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 is: Kellenberger Kel-Varia Baureihe mit Kelco 90 Steuerung. Mechanische Überholung: -komplette Maschine nach Kellenberger Messprotokoll überholt -Neue servicefreundliche Kabine -Neulackierung Elektrische Überholung: -Neue moderne CNC-RUNDSCHLEIFMASCHINEN-Steuerung -Neu aufgebauter Schaltschrank Blsdsuwv H Tjpfx Aklsh -Neue Antriebstechnik -Austausch sämtlicher elektrischer Leitungen Berus Druckschalter etc. -Neue Absolut-Glasmaßstäbe in x- und z -Neuer Absolut Drehgeber (Bei-B-Achse) Standardausstattung: -WSS mit Konus MK5, optional mit Adapter MK5/Kurzkegel -RST mit MK4 Konus. Optional mit Feinverstellung -Schleifspindelstock T1/T2/T3 -T1 Schleifscheibendurchmesser 400mm -T2 Schleifscheibendurchmesser 300mm -T3 Innenschleifeinrichtung riemengetrieben. -Schleifspindelmotor 4,4kW -B-Achse hochauflösend -Marposs Messsystem zur Schleifscheibenvermessung. -Längspositionierung Marposs -GAP Control (Sensor am Schleifspindelstock) Optionen gegen Aufpreis: -HF Innenschleifspindel -Hochgenauer, höchst kippsteifer Werkstückspindelstock -Messteuerung 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 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 Bedpfxjd Ih Dve Akljlh 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.