Used Lindner Two Shaft Shredder for sale (13,048)

Condition: used, Year of construction: 2015, functionality: fully functional, machine/vehicle number: 0710, power: 51 kW (69.34 HP), type of input current: three-phase, sieve perforation: 20 mm, input voltage: 380 V, Robust industrial CSB wood shredder, Woody K45 type, manufactured in 2015. Equipped with a hydraulic feed ram, discharge conveyor belt with a head pulley magnet, and discharge auger. Suitable for processing MDF, chipboard, solid wood, pallets, and various wood waste streams. ✅ Heavy-duty industrial design ✅ Hydraulic push ram for consistent feed ✅ Magnet roller for automatic removal of metal contaminants ✅ Complete line with conveyor belt and discharge auger ✅ PLC-controlled operation ✅ CE-compliant machine Hedpez Dibaofx Akrjnu

Condition: used, Year of construction: 2015, operating hours: 25,000 h, functionality: fully functional, rotor length: 2,200 mm, rotational speed (min.): 58 rpm, overall weight: 30,000 kg, power: 220 kW (299.12 HP), input voltage: 400 V, Slow-running robust single-shaft shredder Suitable for the pre-shredding of various materials without massive disruptive substances. Application: Shredding of industrial and commercial waste, films, packaging materials, textiles, paper, rubber, demolition wood, pallets, paper rolls, cable drums, mixed plastics for thermal and material recycling, loose or baled. Lindner Jupiter 2200 Drive power: 2x 110 kW (ABB) Screen basket cassette: 148 mm Control cabinet: complete with (FU-ABB) Recooler: Yes, included Hnodpfsw Tk E Ajx Akrju Working opening: 2190 x 1750 mm Filling volume: approx. 5 m³ Rotor length: 2190 mm Rotor circle diameter: 745 mm Rotor speed: 50 Hz: 58 rpm Number of rotor knives: 24 pieces Knife size, pointed knife: 145x145x47 mm Counter knife below: 6 pieces Scraper comb above: 6 pieces Hydraulic feed: 11 kW Weight: approx. 30 t Dimensions LxWxH mm: 5300 x 3260 x 3090 mm Hopper: included Delivery time: immediate

Condition: new, Year of construction: 2026, functionality: fully functional, RSS 2-shaft shredder, 800 series, 2 x 7.5 kW Rotor length: 800 Blade thickness: 20 mm The machine can be customized to your specifications, including the control panel. Delivery time upon consultation. Infeed and outfeed conveyor belts are available as an option. This shredder is ideally suited for destroying, for example, hard drives, laptops, mobile phones, rubber, wood, paper, etc. Want to know more? Call or email us. Upon consultation, we can also deliver and install the machines. Please provide your name, company name, and a valid telephone number so we can respond quickly. Hsdpfx Ajw Ry Alskrsnu

Condition: new, Year of construction: 2026, The item for sale is a single-shaft shredder equipped with a hydraulic pusher. Brand/Manufacturer: 3E Machinery Model: WT440120 Main motor power: 75 kW Hsdpfsq Sp Hajx Akrsnu Hydraulic system motor power: 5.5 kW Working rotor length: 1200 mm Rotor diameter: 400 mm Number of knives: 70 pcs Dimensions of the movable knife: 40x40x25 mm, fastened with an M12 screw Single row of fixed knives, two-piece, with the option of mounting a second row of fixed knives (upper) depending on the type of waste being processed Top-loading section widened to facilitate feeding waste into the shredder Hydraulic system equipped with an oil cooling system External bearing Inspection flap opened with the screen, assisted by two actuators The machine is available at our warehouse in Częstochowa. Our offer includes not only individual shredding devices; upon request, we can provide a quote for a complete crushing line (conveyor feeding to the crusher, crusher, receiving conveyor with possible metal separation, grinding mill, big-bag station with a transport fan and a two-fraction cyclone). Also available in our offer: Knife mills Two-shaft crushers Four-shaft crushers Washing lines Systems for cable waste Used machines

Condition: reconditioned (used), Year of construction: 2017, functionality: fully functional, power: 405.26 kW (551.00 HP), Mobile shredder on crawler chassis. Diesel engine: 551 HP Folding discharge conveyor Overbelt magnet (neodymium) Hodsu R Uaxspfx Akrenu Radio remote control Detailed description: see pdf-file

Condition: new, Year of construction: 2026, functionality: fully functional, total length: 5,150 mm, total width: 2,210 mm, total height: 2,600 mm, overall weight: 11,400 kg, warranty duration: 12 months, hopper volume: 2,000 l, rotor diameter: 515 mm, rotational speed (max.): 15 rpm, blade width: 50 mm, power: 90 kW (122.37 HP), rotor width: 1,600 mm, type of input current: three-phase, Genox X1600 Twin Shaft Shredder, suitable for shredding various types of materials including tyres, metals, plastics, wood, packaging materials, household & construction waste etc. Hnedpfx Asz Hyuiskreu Robust, heavy duty construction with easily replaceable wear parts ensures reliable operation, long service life and low maintenance operation. The machine is equipped with twin 45kW (90kW Total Power) drive motors and oversized, heavy duty reduction gearboxes as standard. Providing high torque, low speed operation. The shafts can be started and operated independently which reduces on site power requirements and improves performance. Blade width and hook configuration can be specified to suit the specific application and output size requirements. The shredding blades and spacers are manufactured from heat treated, high quality, precision ground specialist steels to ensure long life, shred quality and minimal operational costs. Segmented blades with replaceable tips are available as an option.

Condition: refurbished (used), Year of construction: 2026, overall weight: 13,000 kg, Completely overhauled pre-shredder VZ 110. - Engine 110 kW - Screen D 40 mm - Fully refurbished with new rotor shaft, cutter bars, sprockets with triplex chain. - Gearbox inspected and newly fitted with bearings - Clutch inspected and newly fitted with bearings - Engine inspected and newly fitted with bearings - Machine repaint: old paint removed, primed, and new finish applied Repair of your defective machine or new fabrication possible Hodpfxjyk Ea As Akronu

Year of construction: 2025, condition: like new (used), Replacement shafts for Lindner Urraco 75 for sale High-quality replacement shafts for a Lindner Urraco 75 shredder are for sale. Hnedpfx Aezphiijkreu – Application: Old wood, household and commercial waste – Condition: New / very good condition Design: Original Lindner shafts, not replica shafts The shafts are ready for immediate use. The price stated is net. Notes: • Sale is made excluding any warranty or guarantee. • No returns or renegotiations. • Subject to prior sale. All information is without guarantee. The seller assumes no liability for any errors, omissions, or changes to the information. The sale is made exclusively subject to prior sale.

Condition: used, Year of construction: 2012, functionality: fully functional, overall weight: 25,300 kg, power: 210 kW (285.52 HP), For sale is a single-shaft shredder from Doppstadt. It is currently still integrated in our production and can be inspected on site. The conversion is scheduled to take place around the end of July 2026. All technical specifications can be found in the images. If you have any further questions, please feel free to contact us. Hnodpfxeyrgibo Akrju

Condition: new, Year of construction: 2026, functionality: fully functional, total length: 7,000 mm, total width: 3,050 mm, total height: 4,000 mm, overall weight: 32,450 kg, warranty duration: 12 months, hopper volume: 4,000 l, rotor diameter: 750 mm, rotational speed (max.): 12 rpm, blade width: 75 mm, power: 150 kW (203.94 HP), rotor width: 1,800 mm, type of input current: three-phase, Genox X1800 Twin Shaft Shredder, suitable for shredding various types of materials including tyres, metals, plastics, wood, packaging materials, household & construction waste etc. Robust, heavy duty construction with easily replaceable wear parts ensures reliable operation, long service life and low maintenance operation. Hnedpfjz Hyupex Akreu The machine is equipped with twin 75kW (150kW Total Power) drive motors and oversized, heavy duty reduction gearboxes as standard. Providing high torque, low speed operation. The shafts can be started and operated independently which reduces on site power requirements and improves performance. Blade width and hook configuration can be specified to suit the specific application and output size requirements. The shredding blades and spacers are manufactured from heat treated, high quality, precision ground specialist steels to ensure long life, shred quality and minimal operational costs. Segmented blades with replaceable tips are available as an option.

Condition: new, We would like to offer you shafts designed for machines such as PRO.S1, MRW 2.65, MRW 2.75. - Paddle shafts - Concrete shafts - Star shafts - Trapezoidal shafts - Cassette shafts PROTECHNIKA is a company with 21 years of history that has specialized in the production of spare parts and complete recycling lines since its inception. In recent years, we have expanded our portfolio to include the manufacturing of grinding shafts for slow-speed shredders. Through the implementation of automated welding processes and proprietary production technology, we have minimized production times while ensuring consistent, high quality. Grinding shafts are a serial product, which, among other benefits, allows us to cooperate with machine manufacturers on an OEM basis. What sets PROTECHNIKA apart from the competition? It's simple! - Certified 3.1 materials - TUV SUD Rheinland quality certification - ISO 9001 - Automated welding processes / ISO 15613 / ISO 15614 - ISO 9606-1 qualified welders Hsdpfxjx Hx Ere Akronu - ISO 9001:2015 - ISO 14001 - An independent design department capable of meeting any customer requirement - Our own RESEARCH AND DEVELOPMENT CENTER Customer relations are of utmost importance to us, because their satisfaction is our success!

Condition: new, Year of construction: 2026, power: 45 kW (61.18 HP), The subject of sale is a single-shaft shredder equipped with a hydraulic pusher. Brand/Manufacturer: 3E Machinery Model: WT40100 Main motor power: 45 kW Hydraulic system motor power: 2.2 kW Working rotor length: 1000 mm Rotor diameter: 400 mm Number of movable knives on the rotor: 58 pcs Dimensions of the movable knife: 40x40x25 mm, fastened with an M12 screw Single row of fixed knives, two-piece Hydraulic system equipped with an oil cooling system External bearing The machine is available at our warehouse in Częstochowa. Our offer includes not only individual shredding devices; upon request, we can provide a quote for a complete crushing line (conveyor feeding to the crusher, crusher, conveyor receiving with possible metal separation, grinding mill, big-bag station with a transport fan and a two-fraction cyclone). Hnedpfxoq Sp Ibj Akrou Also available in our offer: Knife mills Two-shaft crushers Four-shaft crushers Washing lines Systems for cable waste Used machines

Condition: repair required (used), Year of construction: 2019, operating hours: 6,725 h, Equipment: Base version DW 3060-F "Büffel" Hnedpfx Akjy D Nicoreu Central axle trailer chassis with 3 axles, 80 km/h road approval Brake system incl. ABS and lighting in accordance with EC directive 50 mm EC towing eye incl. slip-on shoe Hydraulically adjustable support leg Splash guards (inner and side mudguards) Permissible total weight 25,000 kg Tyres: 385/65 R22.5 Mercedes-Benz/MTU diesel engine 6R1300, 320 kW at 2,000 rpm, complies with EUROMOT IV emission standard Auxiliary hydraulic connection 20 l/min Hydraulic pre-equipment for traction drive Fuel tank 2 x 300 litres Roller length 3,000 mm, diameter 600 mm Trapezoidal teeth for roller (21 pcs) and tooth bar (22 pcs) – Size L (174 mm, armored) Rear conveyor: belt length 5,500 mm, belt width 1,200 mm, hydraulically foldable, with anti-magnetic center section Discharge conveyor: belt length 3,300 mm, belt width 1,000 mm Centrally arranged lubrication strips 24V electrical control system Roller reversal via electric motor when engine is stationary Automatically reversible cooling fan Chassis with level control Acoustic start-up warning Doppstadt telematics system Paint finish: RAL 2011 deep orange Optional equipment: Hydraulic traction drive Auxiliary hydraulic connection 70 l/min Radio remote control Overband magnet for rear conveyor Frame for overband magnet Moistening system Delivery date upon agreement

Condition: new, Year of construction: 2026, functionality: fully functional, total length: 3,860 mm, total width: 1,200 mm, total height: 3,000 mm, overall weight: 5,500 kg, warranty duration: 12 months, blade width: 75 mm, power: 60 kW (81.58 HP), rotor length: 770 mm, MIZAR DSH Series - Double Shaft Shredder for Metal, E-Waste & Plastics High-Torque Performance for Demanding Industrial Applications Engineered for continuous operation, the MIZAR DSH Series delivers powerful, low-speed, high-torque shredding performance for the toughest materials. Designed for reliability, built for industrial scale. CORE ADVANTAGES • Drive System: Independent dual shafts powered by heavy-duty planetary gearboxes. High torque at low RPM ensures efficient size reduction with minimized wear. • Industrial-Grade Components: Siemens/WEG motors, SKF/FAG bearings, Schneider or ABB electrical systems. Globally trusted brands for long-term reliability. • Blade Technology: Custom-engineered, high-alloy wear-resistant steel blades [Örn: HARDOX or equivalent]. Optimized cutting geometry for aggressive intake and consistent output size. • Structural Strength: Reinforced steel frame construction for vibration resistance and extended service life. Fully CE-certified for international compliance. APPLICATION FIELDS • Scrap Metal: Aluminum profiles, radiators, light scrap, sheet metal. • E-Waste: PCBs, motherboards, hard drives, mixed WEEE materials. • Cable Recycling: Copper and aluminum cables, wiring harnesses. • Plastic Waste: HDPE pipes, industrial drums, PET, big bags. • Wood & Alternative Fuels: Pallets, MDF waste, pre-shredding for RDF and SRF production lines. MODEL RANGE & TECHNICAL HIGHLIGHTS (Please ask for the exact configuration based on your material) • DSH S1: Compact footprint. Ideal for medium-capacity operations. • DSH M1: High-performance all-round solution for diverse material streams. • DSH L1: Heavy-duty industrial powerhouse for large-scale recycling plants. Why Mizar DSH? • High torque without high energy consumption • Modular design for seamless integration into complete recycling lines • Easy maintenance access and quick blade-change system Hnodpfxegwhb Ie Akrju • Built for 24/7 industrial environments Need a tailored shredding solution? Contact us for a customized quotation, technical drawings, or send your material for a performance test. Mizar Recycling Machinery

Condition: excellent (used), functionality: fully functional, overall weight: 12,000 kg, Untha RS 100-150 kW. Engines: 2 x 75 kW. Hnsdpfx Aoz Dw Syekrsu The machine has undergone a complete overhaul. New blades, bearings, seals, and electrical controls. Fully functional. Equipment: Perforated screen. Electrical cabinet. Base frame. More technical information and price available upon request.

Condition: ready for operation (used), Weima WLK 12 Specifications Motor Power: 100 hp (75 kW) Feed Opening (Infeed): approximately 6.2′ × 5.9′ (1,920 mm × 1,800 mm) Hnedpjw U Txusfx Akrju Rotor Diameter: ~14.4″ (368 mm) Rotor Width / Length: ~47.2″ (1,200 mm)

Condition: new, Year of construction: 2026, Shafts for shredders: Arjes, Terex, Pronar, Lindner, Eggersmann, Olnova, Komplet, Doppstadt Types – 750, 800, 850, U75, TDS820, Model 75, 2000 and more! - Standard shafts Hnjdpsycxvhefx Akrou - Special shafts - Customer-designed shafts - Spare parts - Knives Concrete / Paddle / Star / Metal / Electro and many more!

Year of construction: 2011, condition: ready for operation (used), A Gross Apparatebau GmbH shredder, which was used in the wood industry, is available. Feed opening X/Y: 600mm/800mm, hopper volume: 0.6m³, rotor diameter: 252mm, rotor length: 600mm, rotor speed: 90rpm, drive power: 18.5kW, number of knives: 14, screen perforation: 10mm-40mm, suction nozzle diameter: 160mm, machine dimensions X/Y/Z: approx. 1800mm/1200mm/1650mm, weight: approx. 1300kg, operating hours: 4578h. Documentation available. On-site inspection is possible. Hnjdpfeu Nlkxex Akrju

Condition: used, Year of construction: 2013, operating hours: 4,867 h, functionality: fully functional, Equipment: Basic model DW 3060-C “Büffel” Central axle trailer chassis with 3 axles, road approval for 80 km/h Braking system incl. ABS and lighting according to EC directive Hnsdpfx Aezn Icyskrou 50 mm EC drawbar coupling incl. adapter shoe Hydraulically adjustable support legs Splash guard (fenders inside and on the side) Permissible total weight 25,000 kg Tires 385/65 R22.5 Mercedes-Benz diesel engine OM460LA, 315 kW at 2,000 rpm, meets exhaust emission standard EUROMOT IIIB Additional hydraulic connections 20 l and 70 l/min. (using a variable pump) Hydraulic preparation for comb basket system and drive mechanism Fuel tank 2 x 300 liters Roller length 3,000 mm, diameter 600 mm Trapezoidal teeth for roller (21 pieces) and comb (22 pieces) - form C (174 mm, armored) Rear belt: belt length 5,500 mm, belt width 1,200 mm, hydraulically foldable, with anti-magnetic center section Longitudinal belt: belt length 3,300 mm, belt width 1,000 mm Centrally arranged lubrication strips 24-V electrical control system Reversal of the roller by means of an electric motor when the engine is stopped Automatically reversible fan wheel Chassis with level adjustment Acoustic start-up warning Paint finish: 2-component paint RAL2011 deep orange Additional equipment: BioPower package - Engine output: 360 kW, with reinforced planetary gearbox - Multi-tooth roller, length: 3,000 mm, diameter: 600 mm - Roller teeth 174 form C armored (42 pieces) - Comb basket system with fine strip basket - Transmission oil cooler Hydraulic drive mechanism Radio remote control NEODYM over-belt magnet for rear belt Frame for over-belt magnet Humidification system Funnel attachment plates foldable on both sides Delivery date will be agreed upon.

Condition: refurbished (used), Year of construction: 2015, operating hours: 20,640 h, functionality: fully functional, overall weight: 24,500 kg, total width: 2,500 mm, Completely overhauled machine Hedpfx Aoyu Undskronu Single-shaft shredder, particularly suitable for secondary shredding and granulation of pre-shredded materials. Application: Commercial waste for thermal or material recycling, e.g., paper, cardboard, plastics and foams, rubber, leather, textiles, floor coverings, etc. Lindner Komet 2200 HP, overhauled in March 2026 Year of manufacture: 2015 Control cabinet with ABB frequency converter, dust-tight with recooler Control panel: complete Drive motors: ABB 2x200 kW Paintwork new / RAL: 5003/7001 Rotor bearings/pull-off sleeve/shaft seals: new Hydraulic unit: complete Total weight approx. 24.5 t Dimensions (LxWxH) mm: 5800 x 2500 x 3100 mm Inspection and trial run/test run possible by appointment. Delivery time: immediate

Condition: new, Year of construction: 2026, functionality: fully functional, total length: 1,600 mm, total width: 1,225 mm, total height: 1,850 mm, overall weight: 1,470 kg, warranty duration: 12 months, hopper volume: 550 l, rotor diameter: 276 mm, rotational speed (max.): 13 rpm, blade width: 20 mm, power: 7.5 kW (10.20 HP), rotor width: 400 mm, Genox M400 Twin Shaft Shredder, suitable for shredding various types of materials including plastics, wood, packaging materials, metals (copper, hard drives etc), Robust, heavy duty construction with easily replaceable wear parts ensures reliable operation, long service life and low maintenance operation. The machine is equipped with a 7.5kW drive motor and oversized, heavy duty reduction gearbox providing high torque, low speed operation. Hnsdpfx Akez Hytrorsu Blade width and hook configuration can be specified to suit the specific application and output size requirements. The shredding blades and spacers are manufactured from heat treated, high quality, precision ground specialist steels to ensure long life, shred quality and minimal operational costs.

Condition: new, Year of construction: 2026, functionality: fully functional, total length: 2,710 mm, total width: 1,270 mm, total height: 1,850 mm, overall weight: 2,300 kg, warranty duration: 12 months, hopper volume: 750 l, rotor diameter: 276 mm, rotational speed (max.): 14 rpm, blade width: 20 mm, power: 15 kW (20.39 HP), rotor width: 800 mm, Genox M800 Twin Shaft Shredder, suitable for shredding various types of materials including plastics, wood, packaging materials, metals (copper, hard drives etc), Robust, heavy duty construction with easily replaceable wear parts ensures reliable operation, long service life and low maintenance operation. Hnedoz Hyucopfx Akrou The machine is equipped with twin 7.5kW (15kW Total Power) drive motors and oversized, heavy duty reduction gearboxes providing high torque, low speed operation. The shafts can be started and operated independently which reduces on site power requirements and improves performance. Blade width and hook configuration can be specified to suit the specific application and output size requirements. The shredding blades and spacers are manufactured from heat treated, high quality, precision ground specialist steels to ensure long life, shred quality and minimal operational costs.

Condition: used, Year of construction: 2017, operating hours: 10,400 h, Equipment: Basic version DW 3060-F "Buffalo" Central axle trailer chassis with 3 axles, 80 km/h road approval Brake system incl. ABS and lighting according to EU directive 50 mm EU towing eye incl. adaptor shoe Hydraulically adjustable support leg Splash protection (mudguards inside and on the sides) Permissible total weight 25,000 kg Tyres 385/65 R22.5 Mercedes-Benz/MTU diesel engine 6R1300, 320 kW at 2,000 rpm, complies with emission standard EUROMOT IV Auxiliary hydraulic connection 20 l/min Hydraulic preparation for drive Hjdpfeyu Srmsx Akrjnu Fuel tank 2 x 300 liters Roller length 3,000 mm, diameter 600 mm Trapezoidal teeth for roller (21 pcs) and tooth bar (22 pcs) - Size L (174 mm, armoured) Rear conveyor belt: length 5,500 mm, width 1,200 mm, hydraulically foldable, with anti-magnetic central section Longitudinal conveyor belt: length 3,300 mm, width 1,000 mm Centrally positioned wear strips 24 V electric control Roller reversing via electric motor when engine is off automatically reversible fan wheel Chassis with level control Acoustic start-up warning Doppstadt telematics system Paint finish: RAL2011 deep orange Additional equipment: Hydrostatic travel drive Radio remote control Attachment for comb extension Limiter Size “L” Comb extension Size "L" Limiter Wetting system Removable hopper extension plates on both sides Delivery date by arrangement

Condition: new, Year of construction: 2026, functionality: fully functional, overall weight: 3,000 kg, rotor diameter: 400 mm, number of blades: 10, total length: 1,120 mm, total height: 1,950 mm, control cabinet length: 500 mm, control cabinet width: 300 mm, control cabinet height: 1,500 mm, total width: 1,210 mm, rotor width: 600 mm, power: 22 kW (29.91 HP), type of input current: three-phase, sieve perforation: 6 mm, warranty duration: 12 months, input voltage: 400 V, inner dimension width: 590 mm, opening width: 400 mm, Equipment: CE marking, ZERMA GS 400/600 – High-Performance Granulator | Precision. Performance. Reliability. Experience the new ZERMA GS 400/600 high-performance granulator in action. The GS series was developed for the highest demands in plastic recycling and combines maximum performance with exceptional reliability and easy maintenance. Highlights ✔️ Rotor diameter: 400 mm ✔️ Rotor width: 600 mm ✔️ Proven ZERMA V-Cut technology ✔️ 5-knife rotor ✔️ 3 stator knives ✔️ Robust steel construction ✔️ Intelligent drop-down cutting system ✔️ External knife adjustment ✔️ Robust bearing outside the cutting chamber ✔️ Optional bypass hopper for long profiles and pipes ✔️ Designed for continuous industrial operation Typical applications * Packaging tapes (at 8 mm, 600 kg/h) * Runners and injection molded parts + start-up lumps up to 1 kg * Plastic profiles * Pipes * Sheets * Films Hnodpfx Aozmhgijkrou * Blow molded parts * Engineering plastics * Production waste * Post-industrial recycling The GS 400/600 stands for precise shredding, high throughput, and long service life – the ideal solution for modern plastic processors and recycling companies.

Condition: new, Year of construction: 2026, functionality: fully functional, overall weight: 1,300 kg, rotor diameter: 252 mm, number of blades: 30, power: 18.5 kW (25.15 HP), type of input current: three-phase, rotational speed (max.): 90 rpm, input voltage: 400 V, AZR 600 18.5 kW 30 rotating knives with welded knife carriers, including 2 knife rows = 30 knives "V5" Screen: 15/20 mm Angled machine frame Slide with pressure plate Vibration-dampening machine feet Automatic star-delta starter Automatic shutdown when the hopper is empty Control cabinet with 5 m cable and PLC control Feed opening: 600 x 800 mm Hopper capacity: 0.6 m³ Rotor diameter: 252 mm Main motor: 18.5 kW - 400 V - 50 Hz - 3-phase Hydraulic motor: 0.75 kW - 400 V - 50 Hz - 3-phase Hnsdpfx Asz I R Shokrou Further information on the knife system: reinbold-entsorgungstechnik.com/files/prospekte/messer-rotor-sys teme-2021.pdf