Used Adsorption Dryer for sale (1,688)

Condition: like new (used), Year of construction: 2019, pressure (max.): 16 bar, Adsorption Dryer Parker Zander K-MT 35-95/D3 Generation 3 Manufacturer: Parker Hannifin Manufacturing S.r.l. / Parker Zander Model: K-MT 35 Kjdoyrunrspfx Abcjdi Version: K-MT 35-95/D3 Generation 3 Serial number: 399893960001 Year of manufacture: 2019 Voltage: 230 V Frequency: 50–60 Hz Protection class: IP65 Max. operating pressure: 16 barg Min. operating temperature: 1 °C Max. operating temperature: 50 °C Condition: new / unused Machine type: adsorption dryer for compressed air

Condition: excellent (used), Year of construction: 2010, Used adsorption dryer Kaeser DC75 Kedpfx Ajxxiufsbcedi Year of manufacture: 2010 16 bar 7.50 m³/min

Condition: excellent (used), Year of construction: 2009, The new cold-regenerating adsorption dryer from Parker Zander combines proven and reliable elements of adsorption technology and impresses with its clear design. Key features of the K-MT series adsorption dryers, such as: • one-piece adsorber profiles • separately controlled main and discharge valves in a leak-free design • compact check valve combination, guarantee continuous operational reliability and high availability. All K-MT series adsorption dryers feature: • self-cleaning screen trays on the wet side • high-quality desiccants During adsorption, the desiccant stores the moisture contained in the compressed air. Parker Zander uses exclusively highly active, high-capacity molecular sieve desiccant. This desiccant guarantees a long service life at high inlet temperatures or low pressure dew points. Regeneration takes place in the opposite direction to adsorption. A portion of the dried compressed air is depressurized to atmospheric pressure and passed through the desiccant bed to be regenerated. The moisture stored during adsorption is carried away with the partial flow of dry regeneration air. The regeneration air requirement of 14.3% for cold-regenerated adsorption dryers is based on: Kjdpfx Aoypb Dusbcodi Operating pressure 7 bar Inlet temperature 35°C Pressure dew point -40°C for a cycle with: - 5 minutes of adsorption - 4 minutes of desorption - 1 minute of pressure build-up The Parker Zander 10-minute cycle, with 5 minutes of adsorption, includes 12 load cycles per hour. The standard 6-minute cycle, with 3 minutes of adsorption, requires 20 load cycles per hour and therefore inevitably 5.6% more regeneration. The Parker Zander 10-minute cycle saves energy costs with reduced wear. Multitronic, the control system with groundbreaking new functions and a new design, is perfectly tailored to the K-MT series of cold-regenerating adsorption dryers. It allows for highly effective adaptation of the adsorption dryer to even the most diverse operating conditions. From the continuously visible status to the pressure dew point control of the adsorption dryer, the benefits for the operator are readily apparent with Multitronic. Housed in a clear and easily accessible control cabinet, the Multitronic system offers: • user-friendly microprocessor control for all Parker Zander Heatless dryer systems • flexible cycle time settings. • Front-panel LEDs for individual functions such as: - Operation - Adsorption - Desorption • Selector switch I-0-2 for fixed cycles or variable cycles as synchronization with the compressor Optional features: • Direct pressure dew point measurement including digital display • A potential-free output for the pressure dew point limit • The ability to set the desired dew point in the range of -25°C to -40°C Technical specifications: K-MT 8 Capacity m³/h: 72 Connection: G ½ Pressure bar: 16 Weight kg: 77 Electrical connection watts: 50 Year of manufacture: 2009 Manufacturer's price: €8,880 "Everything from a single source: We would be happy to offer you suitable bank financing for your project." komplett-konzept.leasingo.de You can find more items – new and used – in our shop! International shipping costs on request!

Condition: used, Year of construction: 1987, Granule dryer, compressed air dryer, granulate drying plant, adsorption dryer -Manufacturer: Zander, adsorption dryer type K1300MS -Operating pressure: 7 bar, max. 16 bar -Container capacity: 200 litres each -Individual components: see photos -Transport dimensions: 1250/750/H1960 mm -Weight: 684 kg Kdodpfotpyqxox Abcsi

Condition: excellent (used), We offer here a Beko adsorption air dryer. BEKO activated carbon adsorber CLEARPOINT 2X times DRYPOINT dust filterS075RFWMX Kondensomat Bekomat 20 FM KA20K1ZAR BEKO activated carbon adsorber CLEARPOINT 2X Type: Beko adsorption dryer Condition: used / used Kdedpfxenyh Tye Abcei Scope of delivery: (See picture) (Changes and errors in the technical data, specifications are reserved!) Further questions we can answer on the phone for you.

Condition: like new (used), Year of construction: 2017, operating hours: 64,630 h, functionality: fully functional, Used adsorption dryer CD150+. 9 m³/min. Kodpfjxyy Nvox Abcedi

Condition: new, Year of construction: 2023, functionality: fully functional, machine/vehicle number: APF271056, total width: 960 mm, total length: 1,770 mm, total height: 2,590 mm, overall weight: 1,720 kg, operating pressure: 10 bar, pressure dew point: -40 °C, warranty duration: 12 months, input voltage: 400 V, The dryers of the BD 360+ to 1260+ series are heat-regenerated adsorption dryers that remove moisture from compressed air through an adsorption process. All dryers in this series are equipped as standard with an innovative Smart Cycle control algorithm, which leads to significant energy savings during partial load operation without the need to add an expensive option. Kedpjt It N Sefx Abcjdi All components are mounted on a common base frame, fully wired and ready for installation, with generously sized vessels and piping to minimize pressure drop within the dryer. The dryer can deliver dry air with a low pressure dew point of -40°C or -70°C (optional) into the compressed air system. Pre-configured, including the following special equipment: - Pressure dew point sensor - Vessel insulation - Blower filter Brand new with 12-month warranty from date of delivery. Optional installation and commissioning at a very competitive price is available from stock in Wettenberg.

Condition: used, Compressed air adsorption dryer, activated carbon adsorber with post-filter BOGE type DAZ 5-2 Kjdpfx Asvrkhkjbcsdi For particularly dry air Manufacturer no. 38315449 Year of manufacture 2013 Volume flow max. 250 liters/min. = 15 m³/h Operating pressure max. 16 bar Connection thread G 1/4“ Mains connection 230 volts, 50 Hz - Pre- and post-filter Space requirement L x W x H 400 x 210 x 580 mm Weight 15 kg good condition

Condition: good (used), Year of construction: 2014, functionality: fully functional, volume flow: 1,000 m³/h, total width: 1,020 mm, total length: 1,680 mm, total height: 2,460 mm, overall weight: 1,540 kg, operating pressure: 10 bar, input voltage: 400 V, power: 14.2 kW (19.31 HP), 1 heat-regenerating compressed air adsorption dryer. Kdodsr A El Eepfx Abcei The dryer was in use from 2014 to 2017. The system has been out of operation since 2017. The compressed air came from an oil-free Atlas Copco ZR3 compressor with 132 kW. Manufacturer: Donaldson Filtration Deutschland GmbH Type: HRS 1000 Year of construction: 2014 Volume flow at 7 bar: 1000 m³/h (16.66 m³/min) Connection: DN 80 Installed power: 14.2 kW Dimensions length / width / height: 1680mm / 1020mm / 2460mm Weight: 1540 kg Desiccant bottom (20 cm): 3 mm activated aluminum oxide Desiccant middle (40 cm): 2 mm activated aluminum oxide Top desiccant (rest up to the top) silica gel as a ball. The desiccant is already disassembled and immediately available. The desiccant was sucked out of the container with a vacuum cleaner and packed separately in airtight bags. The desiccant is still in a usable condition. It is not oily or soiled. There is the possibility of external re-drying. The TÜV has inspected the inside of the containers and an expert opinion is currently being prepared. "Loose adhesion on the lower part of the dished end" (pictures to follow)

Condition: used, Year of construction: 2003, volume flow: 283 m³/h, total width: 1,183 mm, total length: 1,200 mm, total height: 2,073 mm, pressure: 7 bar, overall weight: 605 kg, pressure dew point: -40 °C, pressure (max.): 16 bar, Equipment: type plate available, 1 heatless adsorption dryer Manufacturer: Kaeser Type: DC47E Flow rate: 283 m³/hour (4.72 m³/minute) Kdodpfxev T Tw Ro Abcsi Pressure dew point: -40°C Inlet temperature: 35°C Outlet temperature: 35°C Operating pressure: 7 bar Max. operating pressure: 16 bar Compressed air connection: DN25 (R1") Adsorbent: activated aluminum oxide Vessel capacity: 133 liters Filling weight: 60 kg Dimensions: Height: 2073 mm Width: 1183 mm Depth: 1200 mm Weight: 605 kg

Year of construction: 2023, condition: as good as new (ex-display), Parker Zander Adsorption Dryer K-MT6 cold regenerated, with multitronic-plus control with pressure dew point control with pre- and post-filter Exhibit: Parker / Zander Adsorption System K-MT6 YOC 2023 Technical data: Compressed air supply: BSPT G 1/2" Flow: 0.93 m³/min at pressure dew point -40°C Other models and designs on request ! Max. pressure 16 bar Min. pressure 5 bar Compressed air inlet temperature: 25° to 50°C Ambient temperature 1.5°C to 50°C Kdedpfxsm Twwbj Abcsi Installation site: frost-free indoor installation in a non-aggressive atmosphere. Mains voltage: 230 V , 50-60 Hz Protection Class: IP65 Dimension: Width: 493 mm Depth: 300 mm Height: 1203 mm Weight: 48 kg Visit our shop. We always have a large selection of compressors and dryers in stock.

Year of construction: 2023, operating hours: 0 h, condition: as good as new (ex-display), machine/vehicle number: OFASHL060-40G16AE, Parker Zander adsorption dryer Compressed air preparation system OIL FREE AIR SYSTEM. The OFAS combines sophisticated OIL-X filtration technology with one Optimized drying system to deliver consistently high performance over the long term. The air quality has been externally certified according to ISO 7183 and 8573-1 and meets the requirements of class 0 for the total oil content if required. With dew point control, regeneration air volumes adjustable Exhibit: Parker / Zander adsorption system OFASHL060-40G16AE Year 2019 Technical data: Compressed air connection: BSPT G 1/2 " Flow rate: 1.65 m³ / min at pressure dew point -20 ° C 1.50 m³ / min at a pressure dew point of -40 ° C Removes dirt, oil and water up to 0.003 μm Max. Pressure 16 bar Dimension: Kdjdpfod Sninex Abcsi Width: 559 mm Depth: 490 mm Height: 1510 mm Weight: 93 kg The OFAS system is officially certified by Lloyd to ISO 8573-1 Class 0 in terms of the total oil content of the compressed air from oil-lubricated and oil-free compressors. Other models and designs on request!

Condition: ready for operation (used), Year of construction: 2006, functionality: fully functional, volume flow: 3,000 m³/h, pressure: 10 bar, power: 62 kW (84.30 HP), Good working Keaser heat regenerated adsorption dryer capacity 50.000 liters per min. Kodpelddftsfx Abcsdi connection DM 100 In good working condition complete with filters before and after also various Keaser carbon absorbers available

Condition: new, Year of construction: 2026, functionality: fully functional, power: 11 kW (14.96 HP), A triple pass rotary drum dryer is a type of industrial dryer that is used to reduce or remove moisture from a material. It gets its name from the three rotating drums through which the material passes, each with a different purpose in the drying process. This type of dryer is commonly used in the production of various bulk solids, including minerals, agricultural products, and biomass. Ksdoq Nfuzepfx Abcsdi Here are the key features and components of a triple pass rotary drum dryer: 1. Triple Pass Design: - The material being dried passes through three rotating drums or cylinders, hence the term "triple pass." Each drum serves a specific purpose in the drying process. 2. Material Flow: - The material enters the dryer and first passes through the innermost drum. After the initial drying phase, it moves to the middle drum and then to the outer drum, undergoing additional drying in each pass. 3. Heat Source: - Heat is typically provided by a combustion system, such as a burner or furnace, located at one end of the drum dryer. The hot gases generated by the combustion process flow through the rotating drums, transferring heat to the material. 4. Air Flow: - The dryer is designed to optimize air flow through the drums, ensuring efficient drying. In a triple pass design, the material and hot gases move counter-currently through the three drums, enhancing heat transfer and drying efficiency. 5. Lifting Flights or Lifters: - Lifters are internal components inside the drums designed to lift and cascade the material as it rotates. This movement promotes good heat transfer and uniform drying. 6. Retention Time: - The triple pass configuration allows for an extended retention time of the material in the drying system. This longer exposure to heat enhances the drying efficiency, making the triple pass rotary drum dryer suitable for materials with high moisture content. 7. Cooling Section: - After the material completes the three passes and reaches the end of the drum dryer, a cooling section may be included to reduce the temperature of the dried material before it is discharged. 8. Applications: - Triple pass rotary drum dryers are used in various industries, including agriculture (drying crops like grains), minerals (drying ores or concentrates), and biomass (drying wood chips or other organic materials). 9. Efficiency and Energy Consumption: - Triple pass rotary drum dryers are known for their high efficiency due to the extended drying time and effective heat transfer. However, they may have higher energy consumption compared to single or double pass dryers. When selecting a triple pass rotary drum dryer, it's essential to consider factors such as the type of material to be dried, required moisture reduction, and overall processing requirements. Proper design and operation are crucial to achieving optimal drying performance. Technical details We have different options for different requirements, please contact our team for more info.

Condition: new, Year of construction: 2026, power: 11 kW (14.96 HP), Rotary drum dryer for drying various kinds of materials like sand, biomass, sawdust, red mud, bentonite, coal Diameter: 1200mm Length: 10000mm Power: 11-13KW Gradient: 3% Capacity: 1.5-3 t/h Weight: 14Tons Besides this model, we also have the other models of rotary drum dryer 1500x12000mm, 2400x20000mm, and complete drying system for various materials, welcome to contact us for more details Our factory can design suitable solution according to your specific requirements. Rotary drum dryers are highly efficient machines used extensively in the processing of wood chips, sawdust, and biomass. They operate by utilizing a rotating drum that heats and dries the materials as they are transported through the cylinder. The design of these dryers allows them to handle a wide range of particle sizes and moisture levels, making them suitable for various types of biomass. They can also tolerate high-temperature exhaust gases, which contributes to their efficiency and versatility in industrial applications. Rotary Drum Dryer for Wood Chip, Sawdust, Biomass Kjdjq Igyvjpfx Abcsdi 🌳 Introduction to Rotary Drum Dryers In the realm of biomass processing, moisture control is key. Enter the Rotary Drum Dryer, an indispensable machine designed to efficiently reduce the moisture content of wood chips, sawdust, and biomass. This essential tool enhances productivity, improves fuel quality, and is pivotal in biomass energy production. Let’s explore its functionality and benefits! 💡 💼 Key Benefits of Using a Rotary Drum Dryer 1. Energy Efficiency: Designed to optimize energy use, Rotary Drum Dryers consume less power while delivering high drying efficiency. 🌿💡 2. High Capacity: Capable of handling large volumes of biomass, these dryers are perfect for industrial applications where large-scale drying is needed. 🏭 3. Improved Product Quality: By achieving the optimal moisture content, the dryer enhances the quality of biomass for fuel, pellets, and other applications. 🔥 4. Versatility: Suitable for a wide range of materials including wood chips, sawdust, and various types of biomass, making it a versatile tool in any biomass processing plant. 🌳 # Application Fields and Materials of Rotary Drum Dryer II. Application Fields A. Agriculture - Drying of grains, seeds, and forage. - Processing of agricultural by-products like straw and husks. B. Food Industry - Dehydration of food products such as fruits, vegetables, and spices. - Preservation of food quality during drying. C. Chemical Industry - Drying of chemical powders, granules, and crystals. - Application in the production of fertilizers and detergents. D. Mining and Minerals - Drying of ores, coal, and mineral concentrates. - Reduction of moisture content for easier handling and processing. E. Construction Materials - Drying of sand, cement, and other construction aggregates. - Preparation of materials for manufacturing processes. F. Pharmaceuticals - Drying of pharmaceutical powders and active ingredients. III. Materials Processed by Rotary Drum Dryer A. Organic Materials - Biomass, wood chips, sawdust, and animal feed. B. Inorganic Materials - Sand, clay, limestone, and gypsum. C. Waste Products - Sludge from wastewater treatment plants. - Industrial by-products for recycling or reuse.

Condition: used, Year of construction: 2017, functionality: fully functional, For sale: Fully operational and lightly used belt dryer from New eco-tec. Optionally available with air scrubber and 180m³ silo for dried goods. The plant was in operation until recently and is ready for immediate use. The system spans 2 containers and has a belt length of 24m, rated for 1.5MW thermal output. The belt dryer is entirely made of stainless steel inside the containers. Viewing by appointment. Kedpfsyr Aiqox Abcodi

Condition: excellent (used), Year of construction: 2004, operating hours: 1,14,000 h, overall weight: 4,400 kg, power: 250 kW (339.91 HP), volume flow: 2.802 m³/h, operating pressure: 10 bar, Regularly serviced, in excellent condition. Atlas Copco ZR250 Screw compressor, 10bar 46m3/min Oil-free, water-cooled. MD600 with adsorption dryer Compressor: Manufacturer: Atlas Copco Type: ZR 250 year of manufacture. 2004 loaded operating hours 114,000 Max. operating pressure: 10bar single-stage drive Cooling water consumption 3.7 liters/s Air delivery: 43.6m3/min Water cooled Oil free Kdsdpferp D Uxex Abcsi Power: 250 kW Mains voltage: 400v 50Hz 445A Last service: September 2023 Adsorption dryer, water-cooled Manufacturer: Atlas Copco Type: MD 600 W Year of construction: 2004 Max. operating pressure: 10.5 bar Empty volume: 350 liters machine dimensions: length: 3000mm width: 1600mm height: 2000mm weight: 4400 kg

Year of construction: 2013, condition: used, functionality: fully functional, B+B Anlagenbau TR 100/200-P-V – Mechanical Dryer – Good Condition – Dismantled in Working Order For sale: B+B Anlagenbau type TR 100/200-P-V. The machine is in good condition and was dismantled while fully operational. Technically sound; only normal wear parts show wear. Ksdpfsym Ag Esx Abcedi Worn wear parts: - Screens - Screen support edges (mounting frames) - Sealing rubbers The paddles inside the machine are still in good condition. A large number of spare paddles are included in the sale. Main drive motor: 55 kW Additional loose parts included: - Spare drive motor - Main bearing (2x) - Fan housing - Pulley - Gearbox for screen scraper drive Please note: No spare screens are included. However, contact details of the supplier for the screens and screen support edges will be provided. Machine is available immediately.

Condition: ready for operation (used), Year of construction: 2013, operating hours: 5,000 h, functionality: fully functional, machine/vehicle number: DR047-13 / 10015861, Complete resin dryer system for injection moulding production. The system has been used sparingly and is in good condition. The system consists of multiple components that can also be sold separately, as follows: 1 resin dryer Moretto VTH 31 V, SN 1906041 / 2019 2 resin dryers Plastic Systems, SN DR047-13 / 10015861 / 2013, capacity 370 kg each Dwjbk Rkjwx E Nbjm Eceb 23 resin silos with the following capacities: - 54 kg * 4 pcs - 105 kg * 6 pcs - 113 kg * 2 pcs - 75 kg * 2 pcs - 56 kg * 4 pcs Ksdpowx E Nbjfx Abcodi - 22 kg * 2 pcs - 140 kg * 1 pc - 210 kg * 1 pc - 420 kg * 1 pc Distribution pipelines. Stainless steel pipes and fittings available. Do not hesitate to contact us for a personalised price quote.

Condition: like new (used), Chanber size: 280x180x500mm upper 280x130x450mm lower Kedpfxjd Sm Die Abcjdi Max temperature: 700 C °

Condition: excellent (used), Year of construction: 2022, IES screw compressed air units supply a continuous, reliable flow of compressed air directly to the point of use without requiring a dedicated room. The ECB – SCB range, made according to high quality standards, uses components by leading companies on the market, ensuring reliability and traceability. 7.5 KW 8 Bar 1000 lts/min Very low running hours - 1351 run hours Kdsdpfxoxaxr Ns Abcsi Complete with three filter set

Year of construction: 2025, operating hours: 150 h, condition: refurbished (used), functionality: fully functional, machine/vehicle number: 103, This is prototype of the 570 series model, it has been completely refurbished. It has 96 trays at 60x40 cm and full temperature control on each tray. It has an extraction capacity of 25kg/hr. The machine will be delivered and mounted on location including one week of introduction by out technician. Ksdpfx Asyut Hxjbcedi

Condition: refurbished (used), Year of construction: 2024, operating hours: 250 h, functionality: fully functional, machine/vehicle number: 325, type of input current: three-phase, total length: 1,300 mm, year of last overhaul: 2026, working width: 900 mm, tank capacity: 60 l, total width: 400 mm, total height: 1,200 mm, overall weight: 550 kg, This is an older version of the FD440 with a tray height of 33 mm (new machines are 50 mm). The machine is fully overhauled. The new model's price is 36,900 EUR. The machine comes with a 28m3 oil rotary vacuum pump from Edwards. Extraction capacity: 60 kg The new model can be found here. Kdsdpsyut Hrefx Abcji

Condition: used, Year of construction: 2002, machine/vehicle number: LA14, Used bottel washer dryer GAI - 3500 BPHTechnical Specifications & Performance DataThe Bottle Washer Dryer 5008 is a rotary carousel drying unit engineered for reliable bottle handling within a used bottling line or standalone drying station. Manufactured by Cimec, this second hand machine delivers consistent performance for beverage production and industrial packaging applications where efficient moisture removal is required before downstream labeling, capsule application, or case packing.Model: 5008Year of manufacture: 2002Production speed: up to 3,500 bottles per hourBottle formats (volumetric): Compatible with 0.5L and 0.75L bottle formatsBottle geometry: Cylindrical containersBottle diameter range: 60 mm to 115 mmDrying technology: Rotary carousel (hot air) with anti-condensation featuresPLC installed: NoDocumentation: Paper manuals and electrical schematics availableAdvanced Automation & Control SystemsThe 5008 emphasizes robust mechanical design with straightforward operator control, ideal for facilities prioritizing simplicity and ease of maintenance. While no PLC is installed, the machine’s hot-air drying system integrates anti-condensation management to improve drying effectiveness and reduce residual moisture on the bottle surface. Safety guarding and interlocks are typically part of this class of equipment, supporting safe operation within production environments. Quick mechanical adjustments facilitate format changes across the stated diameter range, helping minimize downtime between production runs.Production Line Integration CapabilitiesThis rotary bottle dryer can operate as a dedicated station or be integrated inline with rinsing, filling, capsuling, and labeling equipment. It is well suited for beverage production lines processing both PET and glass bottles in cylindrical formats. Its compact, carousel-based layout supports smooth infeed and discharge with standard conveyor systems. Format changes within 60–115 mm diameter allow flexibility across common bottle sizes, making it a practical fit for lines handling 0.5L and 0.75L formats.Machine Condition & Maintenance HistoryThe machine has undergone a partial refurbishment in 2025 and has been stopped for approximately one month. It is currently packed and covered, available for inspection. The presence of paper manuals and electrical documentation supports easier recommissioning and setup. Overall, the unit presents as a well-kept second hand component suitable for integration into a used bottling line or as a targeted retrofit in an existing beverage production facility.Operational Performance & VersatilityThe hot-air drying concept with anti-condensation control improves surface dryness prior to downstream operations such as label application or capsule fitting, thereby enhancing label adhesion and presentation. The rotary carousel design ensures consistent residence time and uniform air exposure around the container. Suitable for a broad range of cylindrical bottles, the 5008 supports both PET and glass handling and can complement production of win... Kdjdpfxjyhbdlj Abcoi

Condition: new, Year of construction: 2025, functionality: fully functional, sheet thickness (max.): 5 mm, total length: 950 mm, total width: 850 mm, total height: 1,175 mm, overall weight: 80 kg, input voltage: 380 V, warranty duration: 24 months, nominal power: 1.1 kW (1.50 HP), power: 1.1 kW (1.50 HP), Equipment: documentation/manual, CENTRIFUGAL DRYER MACHINE METAL CENTRIFUGAL DRYER Technical Specifications: Dryer Body Material: 5 mm iron thickness, painted with acid-resistant paint. Diameter: 58 cm Height: 80 cm Drying Basket Material: 1.5 mm stainless steel thickness, electropolished. Diameter: 44 cm Height: 32 cm Basket Volume: 50 liters Speed: 3000 rpm Centrifugal Motor: Kodpfxjrkl Unj Abcjdi Power: 1.1 kW 3000 rpm Drying Fan Material: Aluminum Cast Motor Power: 0.25 kW Speed: 3000 rpm Heater Power: 2 kW heating tube External Dimensions: L: 850 mm W: 850 mm H: 1175 mm