Used Worm Grinding Machine for sale (64,136)

Condition: new, Year of construction: 2026, The CORMAK SM75DC belt grinding machine is a high-efficiency industrial metal belt grinder designed for professional metal surface processing where precision and effective dust removal are equally important. Thanks to the integrated extraction system, solid steel construction, and large working surface, the SM75DC model performs excellently in production plants and metal workshops, ensuring a clean and safe working environment. Main advantages of the machine Extraction system with 860 m³/h capacity – effectively removes dust and metal particles during grinding. Two belt speeds (14.5 / 29 m/s) – enable optimal adjustment of grinding speed to the material being processed. Bedpfx Abjycqitocjwh Stable steel base – provides rigidity and vibration damping, improving both working comfort and surface quality. Adjustable grinding angle with lock – allows precise positioning of the belt to the workpiece. Quick abrasive belt change system – minimises downtime during retooling. Spring-loaded belt tensioning system – ensures automatic and stable belt tension throughout the operation. Design and technology The CORMAK SM75DC belt grinding machine is designed for continuous operation under demanding industrial conditions. The rigid frame made of thick-walled steel, solid base, and precision belt-tensioning mechanism ensure both stability and long service life. The built-in dust extraction unit with two Ø100 mm nozzles significantly reduces workplace contamination and protects the operator. Precision and performance Equipped with a 75 mm wide and 2000 mm long abrasive belt, the machine provides a large contact area for fast material removal and high-quality surface finishing. Two operating speeds (14.5 and 29 m/s) allow the operator to match the speed to the work material – from rough grinding of structural steel to fine finishing of aluminium or stainless steel components. Applications The stationary CORMAK SM75DC belt grinding machine is ideal for: production and industrial facilities, locksmith and welding workshops, surface preparation and finishing operations, deburring, weld grinding, and surface preparation before painting or galvanising. Standard equipment Stable steel base with adjustable tilt Abrasive belt 75 × 2000 mm Built-in dust extraction system with 0.55 kW motor Anti-spark and dust shields Tilting protective guard Technical data Abrasive belt dimensions (L × W) 2000 × 75 mm Belt speed 14.5 / 29 m/s Motor speed 1420 / 2840 rpm Main motor power 2.2 kW Extraction motor power 0.55 kW Extraction capacity 860 m³/h Extraction nozzle diameter 2 × Ø100 mm Power supply 400 V / 50 Hz

Condition: ready for operation (used), Year of construction: 1988, Horizontal surface grinding machine Okamoto Model PSG 63 – UAN Year of manufacture 1988 Grinding length 600 mm Grinding width 320 mm Maximum workpiece height 500 mm Table longitudinal travel 750 mm Table cross travel 340 mm Grinding wheel diameter 350 mm Grinding wheel width 40 mm Spindle speed 1,500 rpm Rapid vertical traverse 400 mm/min Bwedoyg Ei Njpfx Abcoh Power 3.7 kW Automatic feed Magnetic chuck Coolant system Weight 2,500 kg Price: €2,500 plus VAT, ex-site

Condition: ready for operation (used), Year of construction: 2000, Immediately available ex location: Horizontal Surface Grinding Machine ABA Type ECOLINE L 1006 Year of manufacture: 2000 Control: Abamatic – 1 Operator Table: 1000 x 600 mm Table load capacity: 1000 kg Bjdpfx Asyg Ei Aebcswh Grinding length: 1000 mm Grinding width: 700 mm Installation height: 700 mm Grinding wheel: 400 x 100 x 127 mm Grinding wheel speed steplessly adjustable up to 2600 rpm Drive power: 11 kW Grinding wheel speed steplessly adjustable up to 2600 rpm Feed rates, X axis: steplessly adjustable up to 10,000 mm/min Feed rates, Z axis: steplessly adjustable up to 10,000 mm/min Feed rates, Y axis: steplessly adjustable up to 10,000 mm/min Magnetic chuck Belt filter system Weight: 6 t Price: EUR 9,500 – plus VAT, ex foundation

Condition: ready for operation (used), An old Knopp glass grinding machine for edge processing is available. Grinding belt dimensions X/Y: 1830mm/100mm, glass types: float glass/mirror glass/furniture glass/table tops, grinding wheel diameter: 200mm, table dimensions X/Y: 900mm/1400mm, machine dimensions X/Y/Z: approx. 1300mm/1500mm/1700mm, weight: approx. 500kg. On site inspection is possible. Bwedpsygw Spofx Abcoh

Condition: new, Year of construction: 2026, functionality: fully functional, CORMAK SG460S 400V Metal Drum Grinder – Advanced Through-Feed Grinding Machine The CORMAK SG460S 400V metal drum grinder is an advanced through-feed machine designed for precise grinding of metal components. With a grinding drum and a working width of 460 mm, this model is ideal for serial production and facilities that require high-quality surface finishing. It is especially effective for processing small parts after welding or laser cutting. Key Advantages of the Machine 120 mm grinding drum ensures even grinding without risk of burning or scratching Bwjdpfxjycfzkj Abceh Conveyor belt provides smooth transport of the workpiece and stable guidance under the grinding unit Adjustable feed speed from 0 to 4.0 m/min allows adapting the working pace to the material type Dust extraction system with a Ø100 mm outlet ensures efficient dust removal, improving working conditions and component longevity Robust industrial construction (148 kg) guarantees machine stability even during intensive use Design and Technology The SG460S model is designed for stability, precision, and durability. The main frame is made of steel, providing resistance to vibration and deformation. The main 3.0 kW motor drives the grinding drum at 2800 rpm, enabling effective removal of excess material and burrs even in hard steel grades. The 60 W feed motor works with a speed controller, allowing the operator to precisely control the grinding process. The large conveyor belt width of 465 mm enables processing wide elements in a single pass, minimizing operating time. Precision and Work Efficiency The machine provides precise control over the thickness of the processed workpiece in the range of 5 to 80 mm. The grinding belt speed of 14 m/s ensures high surface quality without burning effects. The drum diameter and working length (465 mm) translate into even contact pressure and a uniform final result. Standard Equipment 120 mm grinding drum Conveyor belt width 465 mm Main motor 3.0 kW Feed motor 60 W Dust outlet Ø100 mm Worktable height adjustment Optional Equipment Metal dust and chip extraction system Grinding belts of various grit sizes Automatic material feeding system Technical Specifications Main motor power: 3.0 kW Voltage: 400 V Grinding drum speed: 2800 rpm Grinding drum belt size: 2760 × 75 mm Conveyor belt size: 1120 × 450 mm Worktable size: 460 × 465 mm Dust outlet diameter: 100 mm Conveyor feed speed (variable): 0–4 m/min Max. workpiece height: 80 mm Min. workpiece height: 5 mm Max. workpiece width: 460 mm Grinding drum dimensions (Ø × length): 120 × 465 mm Feed motor power: 60 W Machine dimensions: 880 × 720 × 1230 mm Net weight: 148 kg

Condition: good (used), Stock number: 3071 Manufacturer: WMW Mikromat Machine number: 3402-1/21.29 Type / Model: SFW 200 x 600 Table size: 200 x 600 mm Grinding area: 600 x 200 mm Maximum grinding height: 400 mm Magnet: 600 x 200 mm Bwodpfeygl Tnsx Abcoh Grinding wheels: 200 x 20 x 51 mm Table speed: 2 to 18 m/min Automatic cross feed of table: 0.1 to 2 mm Max. distance table to spindle center: 500 mm Grinding wheel speed: 2,800 rpm Power connection: 3.5 kW Accessories/Equipment: Electromagnet Condition: Good Weight: 1.1 t Machine dimensions: 1,600 x 1,000 x 1,800 mm Dimensions incl. control panel: 2,400 x 1,000 x 1,800 mm

Condition: used, Technical data: Speed: 3000 1/min Connection: 400 V Motor power: 0,37 kW Dimensions, approx.: 680 x 380 x 380 mm Bjdpfx Aopz Ibwobcswh

Condition: used, Year of construction: 2012, functionality: fully functional, NEPTUN ROCK 11 – Year 2012 Straight line edge grinder with 11 wheels for flat edges, Thickness 3-40 mm Bedpfx Aex Tif Nobcjwh Speed 0.5-5 m/min. Power 25 kW Overall dimensions 8089 x 2340 x 1450 mm Weight 3500 kg

Condition: like new (used), Year of construction: 2022, functionality: limited functionality, grinding length: 450 mm, grinding width: 150 mm, table length: 450 mm, table load: 120 kg, table width: 150 mm, grinding spindle speed: 3,000 rpm, Surface Grinding Machine from Showroom (new) Manufacturer: Okamoto Model: ACC-450 AV (open design) Year of manufacture: 2022 Control: Okamoto FX Operating hours: 0 S/N: XXXX Technical specifications: ----- • Table size: 450x150 mm Bwodpfx Ajx U Dawjbcoh • Table travel longitudinal/cross: 530x165 mm • Max. table load: 120 kg • Max. grinding height table / new wheel: 397.5 mm • Standard magnetic chuck: 450x150 mm (P=13mm) • Automatic infeed: 0.0001–0.030 mm • Manual micro feed: 0.0001 / 0.001 / 0.01 mm • Spark-out strokes: 0–5 • Rapid traverse: 600 mm/min • Grinding wheel: 205 x 6–19 x 31.75 mm • Speed: 3,000 rpm • Grinding spindle motor: 1.5 kW • Connected load: 7 kVA • Dimensions: 2,000 x 1,430 x 2,265 mm • Machine weight: 1,250 kg Accessories: ----- • Grinding wheel on flange (new) • Paper band filter with 160 l tank • Table dresser + diamond • Work light • Tool kit • Operating manuals

Condition: new, Year of construction: 2025, functionality: fully functional, grinding length: 1,600 mm, grinding width: 600 mm, New High-Precision Surface Grinding Machine, Kraft brand, Type FS 16060 SD Grinding area: 1600 x 600 mm Main Technical Data - Grinding length: 1,600 mm - Grinding width: 600 mm - Distance from table surface to spindle center: 820 mm - Table drive: Hydraulic - Table load (incl. magnetic chuck): 1,230 kg - Table speed, infinitely adjustable: 5–25 m/min - Max. table travel: 1,700 mm - Max. cross feed speed: 2,000 mm/min - Maximum cross travel: 610 mm - Max. vertical feed speed: 2,000 mm/min - Grinding spindle motor: 22 kW - Grinding wheel dimensions: 500 x 75 x 304.2 mm - Grinding spindle speed: infinitely variable - Machine weight (net): 8,500 kg - Machine width: 7,500 mm - Machine depth: 3,400 mm - Machine height: 2,700 mm - Electrical connection: 400 V / 50 Hz Features: see attachment. Standard Accessories: - 1 Standard grinding wheel 500x75x302.4 mm - 1 Standard wheel flange - 1 Wheel dresser incl. diamond dresser Bodpfsyak H Hjx Abcjwh - 1 Balancing arbor - 1 Balancing stand - 1 Machine lamp - 1 Set of machine tools - 1 Documentation package incl. spare parts list - Machine in CE version (Metric version) Equipment features: - Surface grinding machine with automatic vertical feed - Grinding cycle: roughing – finishing – spark-out - Siemens S700 touchscreen panel and electronic handwheel for Y-axis - Digital readout for vertical axis Y and cross axis Z - Grinding spindle drive 22 kW (including stepless speed regulation) - Electro-magnetic chuck combination (L 1600 x W 600 mm) - Magnetic plate supply unit - Coolant filtration system (incl. coolant tank, paper band filter, and pressure pump) Installed special accessories: - 1 Additional wheel flange for 500 x 75 x 302.4 mm grinding wheel - 1 Full enclosure. Completely closed machine cover with manually operated sliding doors incl. safety interlock - 1 Wheel dressing unit mounted on the spindle head (for straight dressing of the grinding wheel) - 1 Coolant mist extraction unit incl. base frame Precision and surface quality at an optimal price. Fully equipped and ready for grinding, suitable for universal use in a wide range of industrial and application sectors.

Condition: new, Year of construction: 2025, functionality: fully functional, grinding length: 500 mm, grinding width: 250 mm, New High-Precision Surface Grinding Machine of the “Optimal” Series Grinding area: 500 x 250 mm Features: Bedpfx Aeyak Dlebcswh ● Surface grinding machine with automatic vertical feed ● Grinding process: roughing – finishing – spark-out ● Siemens S700 touchscreen panel and electronic handwheel for Y-axis ● Digital readout on vertical axis Y and cross axis Z ● Table cover and splash guards made of stainless steel ● Electrical control cabinet mainly equipped with Siemens components ● Including handwheel dressing device, electro-magnetic chuck, and coolant filtration system Main technical data: Grinding length mm 500 Grinding width mm 250 Distance table surface to spindle center mm 450 Table drive Hydraulic Table load capacity kg 180 Longitudinal movement X Table speed, infinitely variable m/min 7 – 23 Max. longitudinal travel mm 560 Cross movement Z Max. traversing speed mm/min 990 Max. cross travel mm 275 Vertical movement Y Max. traversing speed mm/min 460 Grinding spindle/grinding wheel Grinding spindle drive power kW 2.2 Grinding wheel dimensions mm 200x20x31.75 Grinding spindle speed (speed control optional) rpm 2850 Dimensions Net machine weight kg 1800 Machine dimensions (incl. table movement) Width mm 2300 Depth mm 1650 Height mm 1680 Power connection kW 3.7 All models include standard accessories: ● 1 standard grinding wheel ● 1 wheel arbor ● 1 dressing block incl. diamond ● 1 balancing arbor ● 1 balancing stand ● 1 machine lamp ● 1 set of machine tools ● 1 set of documentation including spare parts list ● CE-compliant machine (metric version) Precision and surface quality at an optimal price. Fully equipped for universal use in a wide range of industrial and application sectors.

Condition: good (used), Year of construction: 1960, Surface grinding machine with magnetic table Working length approx. 500 mm Working width approx. 200 mm Bwsdpoygq Svsfx Abcjh

Condition: used, grinding length / mm Bwjdpfx Aoxxb Nbjbcoh grinding width / mm workpiece height / mm total power requirement / kW weight of the machine ca. / t required space / m

Condition: new, Year of construction: 2025, weight 540 kg diameter 1200 mm height 1100 mm 0 382 l total power requirement 1,9 kW voltage 350/50 V length in total 1820 mm Bwsdpfx Aeuddbvjbceh Vibratory Surface Finishing Machines With Separator VKUE series machines can be used for surface finishing of metal and nonmetal work pieces. This type of machine has a large sieve surface and allows easy separation of the workpieces from the grinding stones. Optional Accesories - Pneumatic Sound Lid - Pneumatic Flap Control - Frequency Control - Dossage Pump - Magnetic Valve - Control Panel Base - Rinsing Pipe (Different Types) The pictures are for orientation only. The optional accessories can be purchased for an additional charge.

Condition: new, Year of construction: 2025, weight 340 kg diameter 960 mm height 980 mm 0 219 l Vibratory Surface Finishing Machines With Separator VKUE series machines can be used for surface finishing of metal and nonmetal work pieces. These type of machines have large screen area and allow easy separation of work pieces from the grindstones. Bjdpjt U Sffofx Abcewh Optional Accesories - Pneumatic Sound Lid - Pneumatic Flap Control - Frequency Control - Dossage Pump - Magnetic Valve - Control Panel Base - Rinsing Pipe (Different Types) The pictures are for orientation only. The optional accessories can be purchased for an additional charge.

Condition: new, Year of construction: 2025, weight 1350 kg diameter 1760 mm height 1240 mm 0 1210 l Vibratory Surface Finishing Machines With Separator VKUE series machines can be used for surface finishing of metal and nonmetal work pieces. Bwedpeuddctofx Abcoh These type of machines have large screen area and allow easy separation of work pieces from the grindstones. Optional Accesories - Pneumatic Sound Lid - Pneumatic Flap Control - Frequency Control - Dossage Pump - Magnetic Valve - Control Panel Base - Rinsing Pipe (Different Types) The pictures are for orientation only. The optional accessories can be purchased for an additional charge.

Condition: new, Year of construction: 2025, weight 800 kg height 1180 mm 0 502 l length 1800 mm revolutions per minute 1500 U/min voltage 380/50 V/Hz engine output 2,5 kW The VKT-500 is a linear vibratory finishing machine and is used for the surface treatment of parts made of all types of metallic and non-metallic materials. The machines in this series are generally used for long and large-volume parts. With the help of movable partitions in the machine, sensitive parts can be processed without being damaged by friction from other parts. Optional accessories - Pneumatic sound insulation hood - Speed control - Dosing pump - Magnetic valve - Electrical control panel stand Bwedpfxsuddmfs Abceh - Rinsing water pipe system The pictures are for orientation only. The optional accessories can be surcharge. Gerd Wolff reserves the right to change the colour and technical data of the machines. The VKT 500 is manufactured for our sales brand "GERD WOLLF Maschinenfabrik", by a renowned manufacturer from Türkiye.

Condition: new, Year of construction: 2025, weight 2600 kg height 1550 mm 0 2197 l length 3800 mm revolutions per minute 1500 U/min voltage 380/50 V/Hz engine output 2 x 7 kW The VKT 2200 is a linear vibratory finishing machine and is used for the Bjdpfx Ajuddi Tsbcowh surface treatment of parts made of all types of metallic and non-metallic materials. The machines in this series are generally used for long and large-volume parts. With the help of movable partitions in the machine, sensitive parts can be processed without being damaged by friction from other parts. Optional accessories - Pneumatic sound insulation hood - Speed control - Dosing pump - Magnetic valve - Electrical control panel stand - Rinsing water pipe system The pictures are for orientation only. The optional accessories can be surcharge. Gerd Wolff reserves the right to change the colour and technical data of the machines. The VKT 500 is manufactured for our sales brand "GERD WOLLF Maschinenfabrik", by a renowned manufacturer from Türkiye.

Condition: new, Year of construction: 2025, cutting speed 35 m/s grinding height 210 mm workpiece length / mm weight of the machine ca. 210-260 kg required space 1100 x 760 x 860 mm The G115 Surface Grinder is a compact grinding machine designed for processing the circumference or face of the grinding wheel on the horizontal or vertical surfaces of a workpiece. Using fixtures or shaped grinding wheels, inclined or shaped surfaces can also be processed. The machine is ideal for small businesses, maintenance industries, home workshops, laboratories, teaching demonstrations, and more. TECHNICAL DATA Maximum cutting amount: not greater than 0.03 mm Maximum linear speed of the grinding wheel: 35 m/s Table size: 152×304 mm Maximum grinding height: 210 mm Longitudinal stroke of the worktable: 340 mm Transverse travel of the worktable: 170 mm T-slot of the worktable: 1-12 mm Outer diameter × inner diameter × thickness of the grinding wheel: 180×32×13 mm Grinding head motor: 550 W/220 V Vertical feed handwheel interval: 0.025 mm Lateral feed handwheel interval: 0.02 mm Net weight / Gross weight: 210/260 kg Machine dimensions: 930×780×730 mm Package size: 1100×760×860 mm FEATURES The worktable can be moved back and forth as well as left and right. The grinding head can be raised and lowered vertically. High rigidity of the entire machine. The grinding head runs smoothly. Compact design with low noise. The machine is lubricated by a manual oil pump. To lubricate, simply pull out the handle. Work cabin is available separately. If you need any other special accessories to improve work efficiency, please Bodovuuvkepfx Abcowh contact customer service. (Special accessories must be purchased separately.) PRODUCT INFORMATION: From the proximal end of the main spindle to 100 mm, the radial runout of the tapered hole axis is 0.01~0.02 mm.

Condition: used, Year of construction: 1979, grinding diameter 630 mm grinding length 4000 mm centre height / mm weight of the machine ca. 32000 kg Discover precision machining with the STANKO 3M194, equipped with a spacious grinding area of 630 x 4000 mm. Weighing at 32,000 KG, this robust machine ensures stability and reliability in your machining processes. Classified under HS-Code 84602910, it meets international standards for quality and performance. Grinding Dimensions: 630 x 4000 mm Weight: 32,000 KG HS-Code: 84602910 Bedpfx Absvm Dzascewh Discover precision machining with the STANKO 3M194, equipped with a spacious grinding area of 630 x 4000 mm. Weighing at 32,000 KG, this robust machine ensures stability and reliability in your machining processes. Classified under HS-Code 84602910, it meets international standards for quality and performance. The 3M194 not only offers impressive dimensions but also incorporates innovative technology, ensuring top-notch results. With its reliable design and precise performance, this cylindrical grinding machine is ideal for processing a variety of workpieces. The precise control and versatility of the STANKO 3M194 make it the perfect choice for companies striving for the highest quality standards in metal machining. Trust in the proven technology of STANKO to optimize your manufacturing processes and achieve superior results. Invest in the future of your production with the STANKO Cylindrical Grinding Machine 3M194 - the perfect combination of performance, precision, and reliability. Contact us today to learn more about this outstanding grinding machine and how it can meet your manufacturing requirements.

Condition: used, width of the strips / mm band length / mm Bwjdpfxjwgi Tao Abcoh band speed / m/min

Year of construction: 2023, condition: new, IMMEDIATELY AVAILABLE ! Vibratory finishing machines with separator Bwedpfx Aben Smbrjceh The machines of the series VKUE can be used for the surface treatment of metallic and non-metallic workpieces. These machines have a large sieving surface and allow easy separation of the workpieces from the abrasive bodies. Optional accessories - Pneumatic sound flap - Pneumatic damper control - Frequency control - Metering pump - Magnetic valve - Control panel base - Flushing tube (different types) The pictures are for orientation only. The optional accessories are available additional charge.

Condition: new, Year of construction: 2025, functionality: fully functional, grinding length: 340 mm, grinding width: 170 mm, total height: 730 mm, total length: 930 mm, total width: 780 mm, The G115 flat grinder is a compact grinding machine designed for processing the circumference or end face of the grinding wheel on horizontal or vertical surfaces of a workpiece. Using fixtures or shaped grinding wheels, it is also possible to machine inclined or contoured surfaces. The machine is ideally suited for small businesses, maintenance operations, home workshops, laboratories, instructional demonstrations, and more. TECHNICAL DATA Maximum removal rate: not greater than 0.03 mm Maximum linear speed of the grinding wheel: 35 m/s Table size: 152×304 mm Maximum grinding height: 210 mm Longitudinal travel of worktable: 340 mm Cross travel of worktable: 170 mm T-slot of worktable: 1–12 mm Grinding wheel outer diameter × bore × width: 180×32×13 mm Grinding head motor: 550 W / 220 V Vertical feed handwheel increment: 0.025 mm Lateral feed handwheel increment: 0.02 mm Net weight / gross weight: 210 / 260 kg Machine dimensions: 930×780×730 mm Packing dimensions: 1100×760×860 mm The worktable can be moved forwards and backwards as well as left and right. The grinding head can be raised and lowered vertically. High rigidity throughout the entire machine structure. Bsdpfoxb Uq Dsx Abcewh The grinding head operates smoothly. Compact design and low noise emissions. A working enclosure is available separately. The machine is lubricated via a manual oil pump. To lubricate, simply pull out the handle. If you require special accessories to increase work efficiency, please contact customer service. Special accessories must be purchased separately. PRODUCT INFORMATION: From the proximal end of the main spindle, the radial run-out of the tapered bore axis is 0.01–0.02 mm at a distance of 100 mm.

Year of construction: 2023, condition: new, IMMEDIATELY AVAILABLE ! Vibratory finishing machines with separator The machines of the series VKUE can be used for the surface treatment of metallic and non-metallic workpieces. These machines have a large sieving surface and allow easy separation of the workpieces from the abrasive bodies. Optional accessories - Pneumatic sound flap - Pneumatic damper control - Frequency control - Metering pump - Magnetic valve - Stand for control panel - Flushing tube (different types) The pictures are for orientation only. The optional accessories are available additional charge. Bwsden Smclepfx Abceh

Condition: good (used), Stock number: 3064 Manufacturer: TOS Year of construction: Machine number: 179875 Type / Model: BU 16 Control: conventional Maximum grinding diameter: 160 mm Grinding length: 320 mm Centre height: 125 mm Clamping range between centres: 250 mm Grinding wheel diameter x width x bore: 300 x 32 x 76 mm Table speed: 0.05 to 7 m/min Table swivel angle: +/- 10° Rotation of grinding spindle headstock: +/- 60° Grinding spindle speed: 2,420 / 3,290 rpm Workpiece spindle speed: 250 to 710 rpm Grinding spindle headstock speed: 2,079 / 2,818 rpm Spindle bore for internal grinding attachment: Bwodpfx Abeygclzjcoh Cross travel of grinding spindle headstock: 80 mm Connection: 5 kW Accessories/Equipment: Internal grinding attachment Condition: good Weight: 1.5 t Machine dimensions: 1,900 x 1,100 x 1,500 mm Dimensions hydraulic unit: 600 x 800 x 800 mm Dimensions electrical unit: 800 x 600 x 1,400 mm