Used External Grinding Machine for sale (86,570)

Condition: used, Year of construction: 1997, Technical details: max. module: 7 weight of the machine ca.: 5 t worm grinding diameter: 280-350 mm width of grinding worm: 84-104 mm min. number of teeth: 6 max. number of teeth: 600 max. top circle diameter: 360 mm max. workpiece weight: 60 kg Kjdpfjx Aq Egox Aansfa without filter *

Condition: ready for operation (used), Year of construction: 2013, functionality: fully functional, Cylindrical grinding machine – external / Manufacturer: WMW / Type: SA 6U x 3000 / YOM/Completely overhauled: 2013 (machine overhauler/carried out by SerWeMa/Germany) Range of parts: Straightening rollers, grinding spindles, general shaft machining. Special feature: Machining with up to 6 steady rests. The machine can be inspected under power by appointment. TECHNICAL DATA: Working range: - Centre height: 260 mm - Max. swing diameter: 515 mm - Max. grinding length: 3.000 mm - Max. grinding diameter: 515 mm - Max. workpiece weight: 500 kg Workpiece headstock: - Speed continuously variable: 12.5 - 355 rpm - Centring tip: Morse K5 Tailstock: - Max. quill stroke: 40 mm - Centring tip: Morse K5 Grinding headstock: - Grinding wheel: * Max. outer diameter: 630 mm * Width max.: 125 mm EQUIPMENT: - Extraction system - Documentation - CE marking Kfedpfxjxymdae Aanoa No guarantee is given for the completeness and accuracy of the technical data and equipment. - Subject to prior sale -

Condition: reconditioned (used), functionality: fully functional, center height: 180 mm, workpiece weight (max.): 100 kg, grinding length: 500 mm, grinding wheel diameter: 400 mm, total width: 14,150 mm, total length: 18,000 mm, total height: 14,750 mm, grinding diameter: 320 mm, workpiece length between centers: 350 mm, grinding wheel width: 50 mm, spindle speed (min.): 3,000 rpm, feed length X-axis: 500 mm, feed length Z-axis: 150 mm, feed rate X-axis: 10 m/min, feed rate Z-axis: 1 m/min, overall weight: 2,100 kg, workpiece spindle speed (max.): 400 rpm, Retrofit Upgraded Cylindrical Grinding Machines , NORTHERN NORTHERN MACHINE TOOLS Online production equipment Test run available Roundness within 0.001 Modified and upgraded cylindrical grinder, Bei Er Machine Tool Kodpfx Aajttfq Hjnsfa Online production equipment Test girding available Roundness within 0.001 beier machine tool works co ltd

Year of construction: 1996, condition: ready for operation (used), Center height: 150mm, max. grinding diameter: 300mm, distance between centers: 620mm, max. workpiece weight: 120kg, grinding head spindle swivel range: +45°/-15°, table adjustment: +/-8.5°, travel X/Z: 160mm/756mm, grinding wheel dimensions X/Y/Z: 400mm/63mm/127mm, grinding wheel speed: 45m/s, workpiece spindle speed: 700rpm. Machine dimensions X/Y/Z: approx. 3000mm/1850mm/1850mm, weight: approx. 3000kg. Including LTA extraction system and SBS wheel balancing device. The workpiece drive is disassembled and its completeness is unknown. Documentation available. An on-site inspection is possible. Kfodpfx Aaoxvdd Aenea

Condition: excellent (used), Center height 300 mm Distance between centers 3500 mm Grinding wheel 760 x 305 x 100 mm With DRO Kjdpfx Aaotpgnhenjfa With measuring control MARPOSS Misc.accessories MARCELS MASCHINEN AG

Condition: refurbished (used), Year of construction: 2025, Schaudt PS51 S600 - Premium overhauled - Sanding length: 600 mm - Center height: 180 mm - Grinding wheel width: 220 mm (optionally more possible) - Workpiece weight: 200 kg Further freely selectable options: - Completely new control cabinet with Siemens Sinumerik One or Fanuc 0iTF-Plus - Quick set-up via GSN user interface - In process measuring control DMK / LMK - Dressing spindle for diamond form roll Kjdpfxsfg Utde Aanofa - Balancing and grinding sensors - Hydraulic clamping/unclamping of tailstock - Autom. Siemens door drive - Remote maintenance - Conversion to needle nozzles - Suitable coolant / extraction system - Automation preparation - and much more. We can also overhaul your existing storage machine! Schaudt / Studer / Kellenberger / Bahmüller / Voumard / Overbeck / Fortuna / Tacchella and much more.

Condition: used, Year of construction: 2003, functionality: unexamined, machine/vehicle number: 2205, grinding wheel diameter: 350 mm, grinding wheel width: 5 mm, mount diameter: 75 mm, Power Supply: 400 V / 50 Hz Power Rating: 70 kVA Fusing: 3 x 125 A Conductor Cross-Section: 5 x 25 mm² Cu Workpiece Diameter: ⌀ 5 – ⌀ 50 mm Workpiece Length: 50 – 300 mm Manual loading and unloading External fully automatic loading device Workpiece headstock fixed on grinding table Workpiece Spindle Unit: Dimensions: ⌀ 135 x 400 mm Lubrication: Permanent grease lubrication Bearing Seal: With air purge Drive: With HF motor Special Mount: Junker standard flange ⌀ 75 mm Max. Speed: 6000 rpm Tailstock: Longitudinal Adjustment: Manual Rotating Center: Junker standard flange ⌀ 48 mm (⌀ 75 mm) Grinding Table: Feed: Z-axis Grinding Spindle Headstock: Infeed: X-axis Horizontal Swivel: B-axis HF Grinding Spindle Units I, II, III: Dimensions: ⌀ 165 x 350 mm Flange: ⌀ 190 mm Kjdpfx Aaowfg Rgjnjfa Standard Flange: ⌀ 127 mm Lubrication: Permanent grease lubrication Bearing Seal: With air purge Drive: 8 kW Balancing: Electronic Max. Speed: 8800 rpm Grinding Wheels I, II, III: Type: Borazon (CBN), ceramic bond Diameter: ⌀ 350 mm Bore: ⌀ 127 mm Coating Width: Max. 5 mm (standard) Peripheral Speed: Max. 140 m/s

Condition: excellent (used), Year of construction: 1983, Model: Fortuna F23 S1000 ASW 45 Manufacturer: Fortuna-Werke Maschinenfabrik GmbH Origin: Stuttgart-Bad Cannstatt, Germany Year of Manufacture: 1983 Machine Type: Universal external cylindrical grinding machine Control Type: Not CNC – semi-automatic with digital position indicators Workholding: Grinding between centers with headstock and tailstock Max. Grinding Length: 1000 mm Main Motor Power: 26 kW Voltage: 380 V Frequency: 50 Hz Connected Load: 50 A Machine Weight: Approx. 4900 kg Grinding Wheel & Spindle: Wheel Diameter Options: 400 mm, 450 mm, 500 mm, 600 mm, 750 mm, 900 mm Wheel Bore Diameter: 127 mm / 203 mm / 305 mm Spindle Speeds (depending on wheel size): From 930 rpm to 1870 rpm Surface Speed Compatibility: 35 m/s and 45 m/s Spindle Design: Combined axial-radial bearing system for high rigidity Oscillating Grinding Support: Yes – for improved surface finish and cooling Grinding Functions: External cylindrical grinding only (not centerless) Longitudinal feed (table movement) Plunge feed (cross movement) Oscillation grinding (with adjustable stroke) Digital input system (non-CNC but programmable logic based) Manual fine adjustment via micrometer and scale plate Notes: Machine is designed for roughing and finishing of steel, cast iron, and aluminum Built-in charts and formulas provided in the manual for infeed rates, stock removal, overspark passes, and optimal feed per material Extremely rigid German construction, ideal for toolrooms or production environments seeking repeatable precision without CNC control Equipped with electronic displays and control panel (not G-code programmable) Power panel and internal logic controlled through Fortuna's relay/PLC interface Kfsdpfx Aajw Avhpjnsa

Condition: good (used), Year of construction: 2005, functionality: fully functional, feed length X-axis: 200 mm, feed length Y-axis: 200 mm, feed length Z-axis: 100 mm, workpiece spindle speed (max.): 90,000 rpm, controller model: Bosch Rexroth MTX, No reserve price - guaranteed sale at the highest bid! TECHNICAL DETAILS Area of application: Hard machining Control: Bosch Rexroth MTX Working area Axes: 6 axes X1,Z1, X2 & Z2: Hydrostatic axes B1: Workpiece spindle P01: Internal loader Dimensions working area: 200 x 200 x 100 mm Spindle & tools Number of work spindles: 1 (1x internal grinding, 1x external grinding) Number of tools: 2 Kfsdpfxjwi N Ngj Aanea Tool holder: External wheel max. Ø500 mm, internal wheel for high frequency spindle Speeds Workpiece: max. 1,375 rpm External grinding wheel: max. 1,375 rpm Internal grinding wheel: max. 90,000 rpm (high frequency spindle) MACHINE DETAILS Machine dimensions (LxWxH): 3.9 x 2.7 x 2.62 m Machine weight: 6,050 kg EQUIPMENT - Part handling: Manual or with Baumann loader - Exhaust air: Extraction system from LOSMA - Units: Hydraulic and hydrostatic oil supply - Cooling unit for hydrostatics and high-frequency spindle

Condition: used, Year of construction: 1965, There are two WMW SU 315x3000 available, connected load machine 1/ 2: 12.6/ 12kW, weight machine 1/ 2: 8.2/ 9t, machines need overhauling. Kfjdpfoxg Ihgsx Aanea

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 Kfsdperntirjfx Aansa 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 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: refurbished (used), Year of construction: 2025, Studer S30 Center height: 125 mm center width: 650 mm Workpiece weight: 80 kg Other freely selectable options: - Completely new control cabinet with SPS-Basic and panel - Conversion to ball screw incl. SPS-Pro (cycle controlled) Kfedpfx Aaod Hdxwonja - "Workpiece memory"-SPS-PRO for 10/15/30/50 workpieces - Glass scale in X- and Z-axis - Swiveling internal grinding device - Motor spindle for internal grinding device - Frequency converter external grinding spindle - Frequency converter for internal grinding spindle - Grinding sensor system - Contact protection on external grinding spindle - Safety door - manually operated - Grinding wheel flange - LED spot with flex arm - suitable coolant system

Condition: ready for operation (used), Centre height: 175mm, centre width: 1000mm, max. external grinding diameter: 350mm, max. grinding length: 1000mm, max. workpiece weight: 130kg, grinding wheel dimensions X/Y/Z: 400mm/80mm/127mm. Machine dimensions X/Y/Z: approx. 2700mm/1700mm/1700mm, weight: approx. 3300kg, operating hours: approx. 21315h. An on-site inspection is possible. Kfjdpfx Aaew Dfhbonja

Year of construction: 2016, condition: ready for operation (used), Grinding wheel diameter: 220mm, grinding wheel width: 5mm, base body width: 20mm, bore diameter: 52mm. Test piece: diameter: 100mm, width: 300mm, profile height: 35mm. Small workpiece: Outer diameter: 400mm, bore diameter: 205mm, wheel width: 100mm, torque: 20Nm, weight including mandrel: 200kg. Large workpieces: Outer diameter: 700mm, bore diameter: 350mm, disk width: 300mm, torque: 800Nm, weight: 250kg. Accuracy: Repeat accuracy: less than 2µm, axial and radial run-out accuracy (large spindle): less than 2µm at 400mm diameter, axial and radial run-out accuracy (small spindle): less than 2µm at 200mm diameter, parallelism over 300mm between test piece and workpiece axis: less than 2µm. Tool spindle speed: 10000rpm, small workpiece spindle: 23000rpm, large workpiece spindle: 6000rpm, test piece spindle: 1000rpm. Kfsdpfsv T Aqgex Aanoa

Year of construction: 1999, condition: ready for operation (used), Center height: 175mm, grinding length: 650mm, B-axis: -15°/195°, workpiece speed: 1750rpm, grinding wheels T1/T2: 500mm/400mm, bore: 203mm, max. workpiece weight: 80kg, workhead: MK4, tailstock: MK3. Machine dimensions X/Y/Z: approx. 3000mm/3000mm/2100mm, weight: approx. 4000kg, operating hours: 56300h, control: GE Fanuc Series 16i-T. Documentation available. On-site inspection is possible. Expected to be available from February/March 2025. Kfjdpfx Aasuku Syjnja

Condition: good (used), Year of construction: 2015, operating hours: 250 h, functionality: fully functional, For Sale: Guideway Grinding Machine (Retrofitted from Metal Planing Machine) We offer a robust guideway grinding machine, which has been professionally converted from an original metal planing machine. The main advantage lies in its relatively compact footprint in relation to the workpiece capacity. Technical Specifications: • External dimensions (LxWxH): 4,800 x 2,500 x 2,000 mm • Required floor space: 4,800 x 3,500 x 2,700 mm (+ control cabinet, coolant tank, access) • Table size: 2,000 x 800 mm • Distance between columns: 1,000 mm • Travel paths (X/Y/Z): 2,000 / 1,000 / 600 mm Upgrades & Features: • New ball screw spindles and bearings • 2 new motors + 2 overhauled motors • 3 new frequency inverters • New Siemens SINUMERIK 802C baseline CNC system • Large grinding spindle: 2,840 rpm – refurbished + new motor Kfodpjxx Uudefx Aanoa • Small grinding spindle: 18,000 rpm – refurbished • Including control cabinet, coolant tank with pump, and separate, wall-mounted inverter for small spindle Inspection and trial run possible by appointment. Please contact us for more information.

Year of construction: 1998, condition: good (used), CHEVALIER FSG 1640 AD SURFACE GRINDING MACHINE MAKE CHEVALIER, MADE IN TAIWAN Kfodpfx Ajirfpgsanea MODEL FSG-1640 AD YEAR 1998 TABLE SIZE 1000 x 400 mm GRINDING WHEEL SIZE 445 mm TRAVERSES 400 x 1000 mm MAX HEIGHT FROM TABLE TO SPINDLE CENTRE 445.0 mm TOTAL POWER REQUIRMENT 7.4 kW PLUS AUTOMATIC DOWN FEED WHEEL-MOUNTED WHEEL DRESSER SYSTEM HYDRAULIC MOVEMENT COOLANT SYSTEM 400.0 x 1000.0 mm ELECTRO MAGNETIC CHUCK MACHINE MANUALS

Condition: as good as new (ex-display), functionality: fully functional, Table size 540 x 250 mm Max table travel 560 x 260 mm Max distance from table to spindle center 450 mm Table slide-way Double-V rail Feed of cross handwheel, per revolution 5 mm Feed of cross handwheel, pe graduation 0,02 mm Feed of vertical handwheel per revolution 1,25 mm Feed of vertical handwheel per graduation 0,01 mm Wheel speed (50 Hz) 2850 rpm Wheel speed (60 Hz) 3440 rpm Wheel size 200x31,75x20 mm Power of spindle motor 1500 W Hydraulic station motor 1500 W Working pressure 3 Mpa Max runoff 18 L/min Fuel tank capacity 80 L Coolant pump 40 W Machine's net weight 900 kg Kfjdpfju Hzg Rjx Aanea Size 1,80x1,40x1,80 m Robust and reliable construction. Zero working hours Price should remain the same till end of December.

Condition: new, Year of construction: 2025, A superfine ball mill is a type of milling machine that is used to grind materials into very fine particles. This type of ball mill has some distinctive features that make it especially suitable for processing even the hardest materials with low contamination and minimal wear. It is commonly used in various industries, including pharmaceuticals, minerals, pigments, and chemicals, for producing micro powder or nanoparticles. Here are some key features and considerations for a superfine ball mill for micro powder: 1. High Grinding Efficiency: Superfine ball mills are designed to achieve high grinding efficiency by utilizing grinding media with a relatively small size, leading to a large surface area for grinding. 2. Precision Control: These mills often come with advanced control systems to regulate parameters like rotation speed, temperature, and grinding time, allowing precise control over the particle size distribution. 3. Specialized Design: The mill is typically designed with features to minimize contamination, such as using materials resistant to wear and corrosion. Some mills also have cooling systems to prevent overheating during the milling process. 4. Variety of Materials: Superfine ball mills can handle a wide range of materials, including both brittle and fibrous substances. They are often used for milling hard materials that require fine grinding, such as ceramics, minerals, or pigments. 5. Size Reduction to Micro or Nano Level: The primary goal of a superfine ball mill is to reduce particle size to the micro or even nano level. This is achieved by the intense grinding action that occurs within the mill. 6. Classifier System: Some superfine ball mills incorporate a classifier system to control the particle size distribution more precisely. This allows for the separation of fine particles from coarser ones during the milling process. 7. Batch or Continuous Operation: Depending on the specific design, these mills can operate in either batch or continuous mode, offering flexibility based on the production requirements. 8. Safety Measures: Safety features may be included, such as monitoring and control systems to prevent overloading, overheating, or other potential issues during operation. Kedpoq Nf Uwsfx Aanjfa When selecting a superfine ball mill for micro powder production, it's important to consider the specific requirements of your application, the characteristics of the materials you're working with, and the desired final particle size distribution. Always follow the manufacturer's guidelines for operation, maintenance, and safety to ensure optimal performance and longevity of the equipment.

Condition: excellent (used), Year of construction: 1988, operating hours: 1,000 h, functionality: limited functionality, machine/vehicle number: 99223, overall weight: 2,800 kg, Grinding Dia: min=0.8 to max 250 mm; Vertical stoke : 90 mm; Max. travel of the grinding head :300 mm Table size :320x600 mm; Max stroke of the table Tranversal 250 mm, Longitudinal 400 mm; Electric motor speed 80000 rpm, Pneumatic 180000 rpm. Dimensions 1585x1260x2665 mm, Weight: 2800 kg Kfodpfx Asxvccdeansa

Condition: excellent (used), Year of construction: 2010, functionality: fully functional, machine/vehicle number: MGB1320E, center height: 180 mm, workpiece weight (max.): 100 kg, grinding length: 500 mm, grinding wheel diameter: 400 mm, total width: 14,150 mm, total length: 18,000 mm, total height: 14,750 mm, grinding diameter: 320 mm, workpiece length between centers: 350 mm, grinding wheel width: 50 mm, spindle speed (max.): 3,000 rpm, feed length X-axis: 500 mm, feed length Z-axis: 150 mm, feed rate X-axis: 10 m/min, feed rate Z-axis: 1 m/min, overall weight: 2,100 kg, workpiece spindle speed (max.): 400 rpm, Equipment: rotational speed infinitely variable, Beijing Second Machine Tool Beijing Second Semi-automatic High Speed Cylindrical Grinding Machine MBS1320E On-line production equipment; test machine available; roundness within 0.001 beier machine tool works co ltd Online production equipment machine testing available The roundness within 0.001 Ksdpfstr Azkjx Aanofa

Condition: new, Year of construction: 2024, functionality: fully functional, This powerful machine to meet the requirements of larger woodworking companies, ensuring exceptional sharpening results. Equipped with an electronic tooth counter and an autonomous cooling system. The ZM150 offers precise sharpening while maintainingoptimal operating conditions. With two electric motors, including a 150mm CBNdisk for sharpening and a motor reduction group for precise blade movement,this sharpener delivers outstanding performance. Power supply voltage - 380-400V Frequency - 50Hz Power - 0.20kVa Capacity - 65 teeth per min Blade width - 20 to 100 mm Tooth pitch - 6 -25mm Kjdpfx Ajxiv Ugeanefa Sharpening disc - Profiled 150mm CBN disc Weight - 115kg

Condition: ready for operation (used), Year of construction: 1998, functionality: fully functional, machine/vehicle number: 199851086/1098, table width: 1,600 mm, overall weight: 6,700 kg, travel distance X-axis: 1,200 mm, travel distance Y-axis: 680 mm, travel distance Z-axis: 400 mm, TECHNICAL DETAILS X-axis travel: 1,200 mm Y-axis travel: 680 mm Z-axis travel: 400 mm Table width: 1,600 mm Table depth: 670 mm Magnet width: 1,200 mm Magnet depth: 600 mm Kfedsx Hzuvopfx Aansa MACHINE DETAILS Dimensions & Weight Dimensions (L x W x H): 5,900 x 3,000 x 2,500 mm Net weight: 6,700 kg Control: Conventional Power: 11.0 kW EQUIPMENT Documentation CE marking

Year of construction: 1991, condition: ready for operation (used), General Data Measurements width 6610 mm Measurements depth 11500 mm Measurements height 5170 mm Machine weight 45800 kg Workpiece Workpiece weight 11000 kg Kedex D Hi Depfx Aansfa This 3-axis WALDRICH COBURG 30-15 S 2525 grinding machine was manufactured in 1991. It features a robust structure with dimensions of 11,500 x 6,610 x 5,170 mm and a weight of approximately 45,800 kg. Capable of handling workpieces up to 11,000 kg, it offers a grinding length of 3,500 mm and a grinding width of 1,450 mm. If you are looking to get high quality grinding capabilities consider the WALDRICH COBURG 30-15 S 2525 machine we have for sale. Contact us for more information. Application Types Grinding

Condition: ready for operation (used), Year of construction: 1998, functionality: fully functional, machine/vehicle number: 430290898, table width: 2,000 mm, spindle speed (max.): 3,000 rpm, travel distance X-axis: 1,500 mm, travel distance Y-axis: 900 mm, travel distance Z-axis: 550 mm, TECHNICAL DETAILS X-axis travel: 1,500 mm Kfsdpfx Aaex Hztljnsa Y-axis travel: 900 mm Z-axis travel: 550 mm Table width: 2,000 mm Table depth: 900 mm Magnet width: 1,500 mm Magnet depth: 800 mm Power: 60.0 kW Max. spindle speed: 3,000 rpm MACHINE DETAILS Weight: 21,000 kg Control manufacturer: Unicon EQUIPMENT CE marking Documentation