DOCSLIB.ORG

Rubber Composition for Tires, Pneumatic Tire, and an Airless Tire

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Rubber Composition for Tires, Pneumatic Tire, and an Airless Tire (19) TZZ¥_Z_T (11) EP 3 196 048 A1 (12) EUROPEAN PATENT APPLICATION published in accordance with Art. 153(4) EPC (43) Date of publication: (51) Int Cl.: 26.07.2017 Bulletin 2017/30 B60C 1/00 (2006.01) B60B 9/26 (2006.01) B60C 7/00 (2006.01) B60C 15/06 (2006.01) (2006.01) (21) Application number: 15849011.0 B60C 17/00 (22) Date of filing: 30.09.2015 (86) International application number: PCT/JP2015/077765 (87) International publication number: WO 2016/056444 (14.04.2016 Gazette 2016/15) (84) Designated Contracting States: •SUGIMOTOMutsuki AL AT BE BG CH CY CZ DE DK EE ES FI FR GB Kobe-shi GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO Hyogo 651-0072 (JP) PL PT RO RS SE SI SK SM TR • IWAMURA Wako Designated Extension States: Kobe-shi BA ME Hyogo 651-0072 (JP) Designated Validation States: • SUGIYA Makoto MA Kobe-shi Hyogo 651-0072 (JP) (30) Priority: 06.10.2014 JP 2014205811 18.12.2014 JP 2014256002 (74) Representative: ManitzFinsterwald Patentanwälte PartmbB (71) Applicant: Sumitomo Rubber Industries, Ltd. Martin-Greif-Strasse 1 Kobe-shi, Hyogo 651-0072 (JP) 80336 München (DE) (72) Inventors: • YOKOYAMA Yuka Kobe-shi Hyogo 651-0072 (JP) (54) RUBBER COMPOSITION FOR TIRES, PNEUMATIC TIRE, AND AN AIRLESS TIRE (57) [ Problem ] To provide a rubber compound for tires, a pneumatic tire and an airless tire capable of improving the steering stability of the tire while exerting excellent low fuel con- sumption performance. [Solution] A rubber compound for tires characterized in that, of vulcanized rubber’s physical properties, a complex elas- tic modulus E*70 (unit: MPa) and a loss tangent tanδ70 under initial strain of 10 %, dynamic strain of 2 % and temperature of 70 degrees C, satisfy 90 < E*70 < 250, and E*70/ tanδ70 > 800. A pneumatic tire provided with a rubber member made of the above-mentioned rubber compound. An airless tire provided with a rubber member made of the above-mentioned rubber compound. An air- less tire provided in a tread ring with a shear rubber layer (107) made of the above-mentioned rubber compound. EP 3 196 048 A1 Printed by Jouve, 75001 PARIS (FR) EP 3 196 048 A1 Description Technical Field 5 [0001] The present invention relates to a rubber compound for tires, a pneumatic tire, and an airless tire capable of improving the steering stability of the tire while exerting excellent low fuel consumption performance. Background Art 10 [0002] Rubber compounds constituting rubber members for tires, for example vulcanized rubber compounds used inside a tire such as a bead apex, is required to have high rigidity in order to improve the steering stability. [0003] For the purpose of increasing rigidity of vulcanized rubber compounds, there have been proposed adding a large amount of filler, adding a thermosetting resin (patent document 1), adding fibrous fillers (patent document 2), blending butadiene rubber comprising 1, 2-syndiotactic polybutadiene crystals (SPB) (patent document 3). 15 [0004] However, the above listed methods tend to deteriorate the low fuel consumption property which is an important performance requirement. For example, a rubber compound having a complex elastic modulus higher than 90 MPa, significantly deteriorates the low fuel consumption properties, therefore, it is difficult to use it for a tire practically. [0005] In view of the above, the inventors of the present invention have conducted various researches. As a result, the inventors of the present invention have succeeded in providing a rubber compound capable of satisfying both high 20 elasticity and low fuel consumption property in a range previously not reached by improving combination of materials composing the rubber compound which have been individually known (hereafter, may be referred to as "compounding tuning"). Prior art document 25 Patent document [0006] 30 Patent document 1: Japanese Patent Application Publication No. 2009-127041 Patent document 2: Japanese Patent Application Publication No. 2013-253222 Patent document 3: Japanese Patent Application Publication No. 2012-97280 Summary of the Invention 35 Problems to be Solved by the Invention [0007] It is an object of the present invention to provide a rubber compound for tires, a pneumatic tire and an airless tire capable of improving steering stability while exerting excellent low fuel consumption property. 40 Means for Solving the Problem [0008] The present invention is a rubber compound for tires characterized in that, of vulcanized rubber’s physical properties, a complex elastic modulus E* 70 (unit: MPa) and a loss tangent tanδ70 under 45 an initial strain of 10 %, a dynamic strain of 2 %, and a temperature of 70 degrees C, satisfy the following expressions (1) and (2): 50 [0009] In another aspect of the present invention, the rubber compound is characterized in that, 55 of vulcanized rubber’s physical properties, a complex elastic modulus E* 30 (unit: MPa) under the initial strain of 10 %, the dynamic strain of 2 %, and the temperature of 30 degrees c, and 2 EP 3 196 048 A1 a complex elastic modulus E* 100 (unit: MPa) under the initial strain of 10 %, the dynamic strain of 2 %, and the temperature of 100 degrees c can satisfy a following expression (3): 5 [0010] In another aspect of the present invention, the rubber compound is characterized in that, of vulcanized rubber’s physical properties, 10 a breaking elongation EBx in an X-axis direction which is a rubber extruded direction, a breaking elongation EBY in a Y-axis direction orthogonal to the X-axis direction, and a breaking elongation EBZ in a z-axis direction orthogonal to the X-axis direction and the Y-axis direction can satisfy following expressions (4) and (5): 15 20 [0011] In another aspect of the present invention, the rubber compound is characterized in that, of vulcanized rubber’s properties, a breaking strength TBX in the X-axis direction which is the rubber extruded direction, a breaking strength TBY in the Y-axis direction perpendicular to the X-axis direction, and 25 a breaking strength TBZ in the Z-axis direction perpendicular to the X-axis direction and the Y-axis direction can satisfy following expressions (6) and (7): 30 [0012] In another aspect of the present invention, the rubber compound for tires is characterized in that, 35 of vulcanized rubber’s physical properties, a volume resistivity value may be less than 1 x 10^8 ohm cm. [0013] In another aspect of the present invention, a pneumatic tire is provided which comprises a rubber member made of the rubber compound for tires as set forth in any one of claims 1-5. [0014] In another aspect of the present invention, an airless tire is provided which comprises a rubber member made of the rubber compound for tires as set forth in any one of claims 1-5. 40 [0015] Another aspect of the present invention is an airless tire comprising a cylindrical tread ring provided with a ground contacting surface, a hub disposed radially inside the tread ring and fixed to a vehicle axle, and a spoke connecting the tread ring and the hub, characterized in that, the tread ring comprises 45 a tread rubber forming the ground contacting surface, an outer reinforcing cord layer disposed closest to the tread rubber, an inner reinforcing cord layer disposed radially inside the outer reinforcing cord layer, and a shearing rubber layer disposed between the outer reinforcing cord layer and the inner reinforcing cord layer, the shearing rubber layer has a complex elastic modulus E* (unit: MPa) and a loss tangent tanδ under an initial strain of 10 %, a dynamic strain 50 70 70 of 2 %, and a temperature of 70 degrees C which satisfy following expressions (1) and (2): 55 3 EP 3 196 048 A1 [0016] In another aspect of the present invention, the shearing rubber layer has a complex elastic modulus E* 30 (unit: MPa) under the initial strain of 10 %, the dynamic strain of 2 %, and the temperature of 30 degrees C, and a complex elastic modulus E* 100 (unit: MPa) under the initial strain of 10 %, the dynamic strain of 2 %, and the temperature 5 of 100 degrees C which can satisfy a following expression (3): 10 [0017] In another aspect of the present invention, the shearing rubber layer has a breaking elongation EBX in the tire circumferential direction and a breaking elongation EBY in the tire axial direction which satisfy a following expression (4), and a breaking strength TBX in the tire circumferential direction and 15 a breaking strength TBY in the tire axial direction which satisfy a following expression (5): 20 [0018] In another aspect of the present invention, the shearing rubber layer has a volume resistivity which may be less than 1 x 10^8 ohm cm. 25 [0019] In another aspect of the present invention, reinforcing cords of the outer reinforcing cord layer and reinforcing cords of the inner reinforcing cord layer may be steel cords. [0020] In another aspect of the present invention, it is possible that the outer reinforcing cord layer comprise a first cord ply including first reinforcing cords arranged to incline with respect to the tire circumferential direction, and 30 a second cord ply disposed radially outside the first cord ply and including second reinforcing cords arranged to incline with respect to the tire circumferential direction at the same angle as and to the opposite direction to the first reinforcing cords, and the inner reinforcing cord layer comprises a third cord ply including third reinforcing cords arranged in parallel with the tire circumferential direction or the tire axi al 35 direction. [0021] In another aspect of the present invention, the outer reinforcing cord layer can further comprise a fourth cord ply disposed radially outside the second cord ply and including fourth reinforcing cords.
Load more

Recommended publications
  • MICHELIN® X® TWEEL Warranty Overview
    MICHELIN® TWEEL® Airless radial tire Warranty Guide Contents MICHELIN® Tweel® Tire Warranty Overview ............................................................................. 3–4 Common Warranty Specifi cations ...............................................................................................5 Parts of a Tweel® Airless Radial Tire .............................................................................................5 Examination Tools .......................................................................................................................6 MICHELIN® X® TWEEL® SSL AIRLESS RADIAL TIRES Technical Specifi cations: MICHELIN® X® Tweel® SSL Tires .............................................................6 MICHELIN® X® Tweel® SSL Tire Torque Specs and Retreading .......................................................7 Tweel® SSL Tire Warranty vs. Wear Guide ..............................................................................8–12 MICHELIN® X® TWEEL® TURF AIRLESS RADIAL TIRES Technical Specifi cations: MICHELIN® X® Tweel® Turf Tires ...........................................................13 Tweel® Turf Tire Proper Installation Instructions ..........................................................................13 Tweel® Turf Tire Warranty vs. Wear Guide ........................................................................... 14–17 MICHELIN® X® TWEEL® CASTERS Technical Specifi cations: MICHELIN® X® Tweel® Casters..............................................................17 Tweel® Caster Warranty
    [Show full text]
  • RFID for TIRES an Enabler for New Services
    RFID FOR TIRES an enabler for new services Julien DESTRAVES R&D MICHELIN Page 1 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / INNOVATION is in MICHELIN DNA AIRLESS Tire CONNECTED Tire GREEN Tire RADIAL Tire TWEEL Page 2 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / AGENDA Benefits of RAIN RFID for tires and the associated challenges A Worldwide Standard for the Industry: ISO TC31 WG10 RFID Tire tags A Use Case example: Racing Tires Page 3 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / LIFE CYCLE AGAINST TIRE TAG INTEGRATION SCENARIOS Manufacturing 1st mounting After manufacturing equipment OEM Retreading Retrofitting End of Life Dealer Storage RFID embedded After retreading, embedded RFID identifies the carcass and not necessarily the tire RFID patch RFID patch possible RFID sticker RFID patch can identify the tire when not initially equipped with RFID Fair cost - Some lost on the way Page 4 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / WHY AND HOW TO USE RFID? ● Why to use RFID? 1. Guarantee of readability in all conditions • During the shelf life of the tire • During the entire tire life for a rolling tire • Leading to a far better traceability (even during tire manufacturing) • End of Life management potentially improved 2. Unfalsifiable: UII coding locked by the tire manufacturer 3. More robust against damages/ageing/robbery/counterfeiting 4. Fitting the needs of most stakeholders (OEM, Dealers, Governments, Retreaders, Tire manufacturers) 5. Better cost/benefit ratio (including the time to write and to read) 6. ISO standard for RFID Tire Tags available in 2018/19 7. Future readability of the RFID by the vehicle Page 5 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / BENEFIT FOR THE TIRE INDUSTRY Depending on the tag implementation technology 1.
    [Show full text]
  • The History of the Wheel and Bicycles
    NOW & THE FUTURE THE HISTORY OF THE WHEEL AND BICYCLES COMPILED BY HOWIE BAUM OUT OF THE 3 BEST INVENTIONS IN HISTORY, ONE OF THEM IS THE WHEEL !! Evidence indicates the wheel was created to serve as potter's wheels around 4300 – 4000 BCE in Mesopotamia. This was 300 years before they were used for chariots. (Jim Vecchi / Corbis) METHODS TO MOVE HEAVY OBJECTS BEFORE THE WHEEL WAS INVENTED Heavy objects could be moved easier if something round, like a log was placed under it and the object rolled over it. The Sledge Logs or sticks were placed under an object and used to drag the heavy object, like a sled and a wedge put together. Log Roller Later, humans thought to use the round logs and a sledge together. Humans used several logs or rollers in a row, dragging the sledge over one roller to the next. Inventing a Primitive Axle With time, the sledges started to wear grooves into the rollers and humans noticed that the grooved rollers actually worked better, carrying the object further. The log roller was becoming a wheel, humans cut away the wood between the two inner grooves to create what is called an axle. THE ANCIENT GREEKS INVENTED WESTERN PHILOSOPHY…AND THE WHEELBARROW CHINA FOLLOWED 400 YEARS AFTERWARDS The wheelbarrow first appeared in Greece, between the 6th and 4th centuries BCE. It was found in China 400 years later and then ended up in medieval Europe. Although wheelbarrows were expensive to purchase, they could pay for themselves in just 3 or 4 days in terms of labor savings.
    [Show full text]
  • 2016 Polaris Ace Polaris 2016 ™
    2016 INTERNATIONAL INTERNATIONAL VERSION ACCESSORIES, RIDING GEAR & GARAGE ACCESSORIES, 2016 POLARIS ACE™ ACCESSORIES, RIDING GEAR & GARAGE INTERNATIONAL VERSION 2016 POLARIS ACE™ ACCESSORIES, RIDING GEAR & GARAGE Polaris Engineered™ 01 Polaris Ace™ Accessory Solutions 02–05 ACCESSORIES Roofs 06 ENGINEERED TO PERFORM Windshields 06 Rear Panels 07 Doors 07 Storage & Interiors 08-09 The Polaris ACE™ is engineered to be the most capable, confident and comfortable solo riding experience. Bumpers & Guards 10 That same mentality produces our Polaris Engineered Parts and Accessories™. We understand what riders Winches 11 Plows 12-14 demand from their equipment, because we’re riders ourselves. From the very start, our accessories are Tracks 15 designed, rigorously tested and meticulously fine-tuned alongside the Polaris ACE™, making sure that they Tires & Wheels 16–19 are completely in sync with one-another to make your off-road experience as comfortable and confident Lighting 20–21 Technology & Electronics 22-24 as possible. Audio 25 RIDING GEAR 26–27 Helmets 28–29 Goggles 30 Gloves & Jerseys 31 Protection 32 Youth Protection 32 Beanies & Base Layers 33 Men’s Casual Apparel 34-35 Women’s Casual Apparel 36–37 Youth Casual Apparel 38 Sizing Charts 38 Ogio® Bags 39 Gifts 39 GARAGE 40-41 Tool Chests 42 Shop Products 43 Generators & Battery Care 44 Trailers, Ramps & Covers 45 Parts 46 Vehicle Care & Fuel Treatments 47 Oils 48 Lubricants 49 “POLARIS ENGINEERED PARTS AND ACCESSORIES™ ARE MADE BY THE SAME PEOPLE WHO DESIGN THE VEHICLES. NOBODY KNOWS THESE MACHINES BETTER THAN US.” SEE POLARIS ENGINEERED™ VIDEOS — CLINT J., POLARIS DESIGNER AT POLARIS.COM/ACEACCESSORIES PROTECTION FROM ABOVE — POLY SPORT ROOF – PG 06 DESIGNED TO BE SOLUTIONS DIFFERENT Every riders’ needs are different.
    [Show full text]
  • Download the Michelin Uptis Information Sheet
    Taking the Air Out of Tires to Improve Automotive Safety Non-pneumatic technology has tremendous potential to enhance motor vehicle safety by reducing risks associated with improper tire pressure, which may cause tire failures, skidding or loss of control, and increased stopping distance. X MichelinMichelin Uptis is an airless mobility solution A new step toward safety and sustainable for passengerpasse vehicles, which reduces the risk mobility is moving into the mainstream. of fl at tires and tire failures that result from puncturespunct or road hazards. Today, tires are condemned as scrap due to fl ats, failures Michelin has been working with non-pneumatic solutions for or irregular wear caused by improper air pressure or poor nearly 20 years. The Company introduced the fi rst commercial X TheT breakthrough airless technology maintenance. These issues can cause crashes, create congestion airless offering for light construction equipment, the MICHELIN® of the Michelin Uptis also eliminates on the roads and result in large amounts of tire waste. The TWEEL® airless radial solution. Michelin has continued its thet need for regular air-pressure majority of these tire-related problems could be eliminated innovations to expand its portfolio of airless technologies checksand reduces the need for other with the transition to non-pneumatic solutions. for non-automotive applications, while also advancing this technology for passenger vehicles. Uptis balances highway preventive maintenance. Airless wheel assemblies could become the next speed capability, rolling resistance, mass, comfort and noise. X Michelin Uptis is well-suited to transformational advancement in vehicle safety and technology. Airless solutions eliminate the risks of fl ats and rapid air loss due Continuing Uptis’ progression to market, in April 2020, the U.S.
    [Show full text]
  • LEW-TOPS-161.Pdf
    Shape Memory Alloy Tubular Structure National Aeronautics and Space Administration BENEFITS Safe, reliable, and high- strength: the airless SMA structure eliminates the possibility of puncture failure and can withstand excessive deformation (more than 30x that of traditional materials) Design flexibility: customization of structural Mechanical and Fluid Systems performance characteristics can result in optimized performance that conventional pneumatic Shape Memory Alloy tires cannot achieve Improved manufacturability: Tubular Structure the structure is more simple to build than previous Revolutionary Technology Eliminates Pneumatic Tire designs and is scalable for Risks a variety of applications Reengineering opportunities: solution the SMA structure provides Innovators at NASA's Glenn Research Center (GRC) have developed the potential to redesign a next-generation, non-pneumatic, compliant tire structure based on wheel and braking systems, shape memory alloy (SMA) elements. This new structure builds upon seals, and energy absorption components previous work related to airless tires that were designed for rovers that may offer advantages used in planetary exploration. The use of SMAs capable of over conventional systems undergoing high strain as load bearing components results in a tubular structure that can withstand excessive deformation without permanent damage. These structures are capable of performing similarly to traditional pneumatic tires but with no risk of puncture or loss of tire pressure. The new technology is an extension of previous nonpneumatic metal-mesh tire designs developed at GRC, but with a structural pattern that improves manufacturability and offers design flexibility for customization. The innovation has been prototyped for use as a bicycle tire, but this SMA structure can be used in a wide range of applications including, off-road vehicles, aircraft landing gear, military ground vehicles, agricultural machinery, seals, and technology energy absorbers.
    [Show full text]
  • The Next Wave of Air-Filled Tires
    International Journal of Recent Technology and Engineering (IJRTE) ISSN: 2277-3878, Volume-8, Issue-1S5, June 2019 The Next Wave of Air-Filled Tires B.C.Chew, H.Hafizuddin, Sivaraos, S.R.Hamid, T.J.S.Anand, K.E.Chong, I.Rajiani ABSTRACT: The air filled tires have been a domain design of Although the different inventions were initially taken off on the automobile industry for nearly a decade and they appear different types of vehicles while the development continues, until today-although they are carrying risks of tires failure which both solid tires and air-filled tires converged at the point of could lead to injuries and death in road accidences. Alternatively, fulfilling the consumer‟s comfortability where the the airless tires have a lot of potential and capable to resolve competition began.At the early stage, solid rubber tires existing tires deficiencies. However, to date, the airless tires are confined to be used on motorized golf carts or heavy equipment. werepreferable over the air filled tires because of their The objective of this study is to investigate the awareness of durability and perception of tires solidness which would Malaysian drivers on both air filled tires and airless tires. support the entire vehicles when it remains stationary or Through descriptive quantitative research with the structured mobile. Yet, the solid rubber tireswere unable to provide the interview on100 customers whom were servicing their tires at 20 same level of ride comfort as the air filled tires. When the professional tires shops located at Kuala Lumpur and Selangor, consumer satisfaction dominated the market orientation, the the strengths and weaknesses of air filled tires and airless tires popularity of solid rubber tires decreased, subsequently gave were examined respectively.As a conclusion, the existence of air a window opportunity for the air filled tires to be developed filled tires and airless tires are two completely different further.
    [Show full text]
  • Tire - Wikipedia, the Free Encyclopedia
    Tire - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Tire Tire From Wikipedia, the free encyclopedia A tire (or tyre ) is a ring-shaped covering that fits around a wheel's rim to protect it and enable better vehicle performance. Most tires, such as those for automobiles and bicycles, provide traction between the vehicle and the road while providing a flexible cushion that absorbs shock. The materials of modern pneumatic tires are synthetic rubber, natural rubber, fabric and wire, along with carbon black and other chemical compounds. They consist of a tread and a body. The tread provides traction while the body provides containment for a quantity of compressed air. Before rubber was developed, the first versions of tires were simply bands of metal that fitted around wooden wheels to prevent wear and tear. Early rubber tires were solid (not pneumatic). Today, the majority of tires are pneumatic inflatable structures, comprising a doughnut-shaped body of cords and wires encased in rubber and generally filled with compressed air to form an inflatable cushion. Pneumatic tires are used on many types of vehicles, including cars, bicycles, motorcycles, trucks, earthmovers, and aircraft. Metal tires are still used on locomotives and railcars, and solid rubber (or Stacked and standing car tires other polymer) tires are still used in various non-automotive applications, such as some casters, carts, lawnmowers, and wheelbarrows. Contents 1 Etymology and spelling 2 History 3 Manufacturing 4 Components 5 Associated components 6 Construction types 7 Specifications 8 Performance characteristics 9 Markings 10 Vehicle applications 11 Sound and vibration characteristics 12 Regulatory bodies 13 Safety 14 Asymmetric tire 15 Other uses 16 See also 17 References 18 External links Etymology and spelling Historically, the proper spelling is "tire" and is of French origin, coming from the word tirer, to pull.
    [Show full text]
  • The Pneumatic Tyre – Understanding Its Role and Modelling Its Performance in Virtual Computer Based Design
    The Pneumatic Tyre – Understanding its Role and Modelling its Performance in Virtual Computer Based Design Mike Blundell Professor of Vehicle Dynamics and Impact Centre for Mobility and Transport Coventry University, UK Presentation to the IMechE Central Canada Branch Toronto, 15th June 2016 Contents • The Role of the Tyre • History • CAE Environment • Tyre Force and Moment Generation • Tyre Models for Handling and Durability - Magic Formula Tyre Model - Harty Tyre Model - FTire (Flexible Ring Model) • Aircraft Tyre Modelling • New Developments The Role of the Tyre Issues that effect tyre performance include: – Grip - handling safety on different surfaces – Fuel Economy (20% of fuel lost due to tyre rolling resistance) – Noise (most of what you hear is from tyres) – Durability and off-road performance – Emissions (wear and rubber particles) https://dc602r66yb2n9.cloudfront.net/pub/web/ images/article_thumbnails/article-tire- construction.png Tyres are complex and subject to: – Extensive research and development in mechanical design and material chemistry – Involves Extensive Testing and Computer Modelling – Manufacturing is complex – Future Contribution as an Intelligent Tyre History of Tyres The first pneumatic tyre, 1845 by John Boyd Dunlop Robert William Thomson. reinvented the pneumatic http://www.blackcircles.com/general/history tyre in1887 http://www.lookandlearn.com/blog/2065 In 1895 the pneumatic tyre was first 4/john-dunlop-was-the-vet-who- used on automobiles, by Andre and invented-the-pneumatic-tyre/ Edouard Michelin. http://www.blackcircles.com/general/history
    [Show full text]
  • MICHELIN TWEEL FITMENT GUIDE for KUBOTA POWER EQUIPMENT UPDATED MAR 2021 What Is a Michelin ® X ® Tweel® Airless Radial Tire?
    MICHELIN TWEEL FITMENT GUIDE FOR KUBOTA POWER EQUIPMENT UPDATED MAR 2021 What is a Michelin ® X ® Tweel® Airless Radial Tire? CONTENTS No Maintenance The MICHELIN® X® TWEEL® airless radial tire is one single unit, replacing the current tire and wheel assembly. FITMENT GUIDES There is no need for complex mounting equipment and once they are bolted on, there is no air pressure to maintain. ZERO TURN MOWERS PG. 3 No Compromise UTILITY VEHICLES PG. 4 The unique energy transfer within the poly-resin spokes helps reduce the “bounce” associated with pneumatic tires, SKID STEERS PG. 5 while providing outstanding handling characteristics. No Downtime (No Flats!) The TWEEL® airless radial tire is designed to perform like a pneumatic tire, but without the inconvenience and downtime associated with flat tires. KUBOTA MOWERS MICHELIN X-TWEEL TURF AIRLESS TIRE Manufacturer: Michelin 1 1 Tread design optimized to mimimize turf damge while pro- viding excellent traction and a long service life. Zero degree belts (under the tread) and proprietary design 2 provide great lateral stiffness, while resisting damage and 2 absorbing impacts. 4 3 Excellent lateral stability on hillsides and sloped surfaces, and outstanding operator comfort, even when navigating over curbs and other bumps. 3 4 Consistent hub height helps ensure the mower deck pro- duces an even cut. FITMENT SIZE ITEM NO. ZD1211-60 26x12N12 X-Tweel Turf MC-29513 FITMENT SIZE ITEM NO. ZD1211R-60R 26x12N12 X-Tweel Turf MC-29513 Z411KW-48 22X11N12 X-Tweel Turf MC-37968 ZD1211L-72 26x12N12 X-Tweel Turf
    [Show full text]
  • Mitas Tire Mimics a Track
    Farm King’s new “Propeller series” snowblower comes with aggressive propeller blades Mitas PneuTrac tire looks like it’s fl at, but rides smoother than conventional tires in mounted on a paddle-style auger to cut through hard-packed snow. rough fi eld conditions, says the company. “Paddle” Snowblower Cuts Mitas Tire Mimics A Track Tires that look like they’re running fl at but operators who spend long hours in the fi eld Through Hard-Packed Snow aren’t really turned farmer’s heads at the 2015 in rough conditions. The smoother ride may We spotted Farm King’s new Propeller Series down larger pieces of snow as it enters the Farm Progress Show in Illinois. That’s where also reduce wear on the machines, he says. 3-pt. mounted snowblower this fall at the machine and moves toward the fan, providing the Mitas PneuTrac made its working debut Two PenuTrac sizes are undergoing Ohio Farm Science Review show. a smoother fl ow of snow into the fan. on a Case IH Maxxum tractor. PneuTrac extensive fi eld testing in Europe: 280/70 R18 What sets the snowblower apart is its Propeller Series snowblowers are available 28-in. tires were mounted on the front with and 600/65 R38. The company says when aggressive new propeller blades mounted in cutting widths from 50 to 120 in. and 38-in. PneuTracs on the rear. the product is released for sale – hopefully on a paddle-style auger. According to the cutting heights from 24 to 41 in. A driving demonstration paired the in 2016 – that it will produce the new tires company, the design maximizes performance Contact: FARM SHOW Followup, Farm PneuTrac tractor with a conventionally- in its Charles City, Iowa plant.
    [Show full text]
  • The Influence of Non-Pneumatic Tyre Structure on Its Operational Properties Z
    INTERNATIONAL JOURNAL OF AUTOMOTIVE AND MECHANICAL ENGINEERING (IJAME) ISSN: 2229-8649 e-ISSN: 2180-1606 VOL. 17, ISSUE 3, 8168 – 8178 DOI: https://doi.org/10.15282/ijame.17.3.2020.10.0614 ORIGINAL ARTICLE The Influence of Non-Pneumatic Tyre Structure on its Operational Properties Z. Hryciów, J. Jackowski and M. Żmuda* Institute of Vehicle & Transportation, Faculty of Mechanical Engineering, Military University of Technology, 2 Sylwestra Kaliskiego Street, 00-908 Warsaw, Poland Phone: +48 261 839 565; Fax: +48 261 837 366 ABSTRACT – A non-pneumatic tyre (NPT) is a novel type of safety tyre that is designed to provide ARTICLE HISTORY similar elastic properties to those offered by conventional pneumatic tyres. The main advantage of Revised: 14th Sept 2020 NPT is the lack of compressed air (like in a pneumatic tire) to ensure adequate traction forces and Accepted: 21st Sept 2020 directional control. Suitable materials and the appropriate geometry of the supporting structure allows to achieve properties provides by pneumatic tires. Flexible spokes and closed structure like KEYWORDS Non-pneumatic tyre; honeycomb are the most common solutions of supporting structure. Appropriate geometry, Airless tyre; thickness and materials of this part affect the NPT properties; radial stiffness, unit pressure in the Radial stiffness characteristics; contact patch and the parameters of an area in contact with a non-deformable surface. The paper NPT footprint; presents the FEM NPT model (NPT_0), which was validated with the results of experimental NPT pressure in the contact research of NPT. The NPT_0 model is subject to further modifications (layout and shape of the patch radial spokes) was used in the study.
    [Show full text]