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Technical Data - Earthmover Tyres

Technical Data - Earthmover Tyres
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Technical Data - Earthmover Tyres

Product catalog summary
Technical Data Overview: The document provides comprehensive technical data on Michelin Earthmover Tyres, focusing on specifications, procedures, and recommendations for their use. It includes detailed information on tyre identification, load indices, speed symbols, and classification codes.
Specifications: Earthmover tyres are categorized into three major families based on the aspect ratio (H/S): 100 series (standard), 80 series (wide base), and low profile tyres (H/S < 80). Different tread compounds and depths are detailed, indicating their suitability for various terrains and conditions.
Procedures and Recommendations: Emphasis is placed on adhering to specified load and pressure tables, which extend beyond standardized values for guidance. Instructions are provided to avoid tyre forfeiture, with advice on tyre use for different machinery and conditions.
Norms and Standards: Standardized identification codes for tyre classification are included, detailing use codes and Michelin tread patterns. Conversion tables for units of measure ensure accurate application of technical data.
Key Data and Tables: Tables on approximate loose material densities, units of measure and conversion factors, and tyre load and pressure specifications are crucial for determining the appropriate tyre for specific applications and conditions.
Critical Information: The document stresses the importance of not exceeding the maximum speed and load limits of tyres, as indicated by the load index and speed symbol. Checking tyre markings to ensure suitability for the intended use is advised.
Tyre Specifications: Various tyre sizes and their corresponding Michelin identification codes are listed, indicating the tyre's intended use, such as traction, rock, speed, flotation, and multi-purpose.
Tyre Construction: Two main construction types are discussed: Bias or Diagonal Ply Construction and Michelin X Radial Technique. Bias construction involves criss-crossed plies leading to accelerated wear and less grip, while the X Radial Technique uses a single radial ply with stabilized crown plies, offering longer life, better traction, and lower fuel consumption.
Tyre Characteristics: Measurements such as section width, external diameter, and tread depth are explained. Guidelines on reading load/pressure tables emphasize the importance of correct pressure based on working conditions to optimize tyre performance.
Usage Guidelines: Detailed tables are provided for different machine types, including loaders, compactors, underground mining machines, skid steers, backhoes, excavators, graders, and transport vehicles. Each table outlines load capacities and pressure recommendations based on speed and operational conditions.
Performance Recommendations: Maintaining optimal tyre pressure and load limits is advised to ensure economic use and prevent premature wear. The impact of speed variations on load capacity is highlighted, with specific tables for different speed ranges and conditions such as desert and road use.
Dimensional Characteristics: Each tyre model is described with its dimensions in both metric and imperial units, including tread depth and rim compatibility. Maximum distance per hour and the corresponding TKPH (Ton Kilometers Per Hour) and TMPH (Ton Miles Per Hour) ratings are specified.
Load and Pressure Guidelines: Detailed tables show load capacities in kilograms and pounds at various inflation pressures (measured in bar and psi). These tables are segmented by tyre type and usage scenario, such as cranes or loaders, and speed ranges from 0 km/h to 100 km/h.
Usage Recommendations: Guidelines are provided for selecting the appropriate tyre and determining the correct inflation pressures based on the specific application and operating conditions, including considerations for different terrains such as road, track, and sand.
Key Observations: The importance of matching tyre specifications to the vehicle's operational requirements to ensure safety and performance is emphasized. Variability in load capacity and inflation pressure requirements depending on the speed and type of terrain is highlighted.
Conclusion: This technical document serves as a comprehensive guide for selecting and maintaining Michelin earthmover tyres, ensuring optimal performance and safety in various industrial applications.
General Specifications: For various types of heavy machinery such as articulated dump trucks, motor-scrapers, and site dumpers, the document outlines the need to establish the Gross Vehicle Weight (GVW) and the percentage load distribution by axle. The load per axle is calculated and then divided by the number of tyres per axle to determine the tyre weight.
Inflation Pressure Determination: The procedure involves determining the total machine weight using manufacturer data or by weighing each axle. The load per tyre is calculated, considering any axle overload. Tyre pressures are then determined using specific tables for different machinery types like cranes and loaders.
Tyres for Special Applications: These tyres are designed for use in challenging conditions such as sand and desert regions. The tread is broad to improve grip and minimize digging in. The radial casing is designed to withstand heavy loads at low pressures, minimizing vibration and damage on rough surfaces.
Tyre Loads and Inflation Pressures: Different pressures are recommended based on road, track, and sand conditions. For road use, pressures are calculated for speeds up to 80 km/h, while for track and sand, lower speeds and pressures are specified. Adjustments are necessary after using sand pressures.
Determining Inflation Pressures for Loaders: Two methods are outlined: weighing the machine axles or using manufacturer data. Detailed calculations for determining maximum loads on front and rear axles, with specific examples and base pressures provided.
Tyres for Compact Loaders, Backhoe Loaders, and Telescopic Handlers: Accurate tyre pressures are set by weighing the machine axles. Different tables are used for front and rear axles based on the machine type and speed. Special considerations are given for different types of backhoe loaders and telescopic handlers.
Determining Pressures for Graders and Other Machinery: Inflation pressures should not be lower than 2 bar, with adjustments made for overloads or special needs. Specific guidelines are provided for compactors and roadbuilding machinery, with tyre choices based on speed capabilities and load capacity.
Specifications and Procedures: Detailed guidelines for determining the appropriate load and pressure for earthmover tyres based on the type of machine and its operation are provided. Specific instructions for calculating the load per tyre for various machines such as loaders, cranes, and transport machines are included. The importance of using the correct load/pressure tables for different applications and speeds is emphasized.
Calculating Load Per Tyre: For machines where the load per axle is unknown, formulas are provided to estimate the load based on the machine's weight and payload. For example, for cold planers and stabiliser mixers, the load per axle is 50% of the machine weight, while for pavers, it is 80% of the machine weight divided by the number of axles.
Determining Pressure for Underground Machines: Methods for determining tyre pressures for loaders, either by weighing the axles or using manufacturer data, are outlined. Differences in load distribution between underground and surface loaders are highlighted, with specific tables for tyre loads and pressures provided.
Factors in Tyre Selection: Key factors to consider when selecting tyres include machine specifications, site conditions, and operational parameters. The importance of understanding the machine's load, speed, and cycle length, as well as potential problems like traction and tyre wear, is discussed.
TKPH (TMPH) Method: The TKPH (Ton Kilometre Per Hour) or TMPH (Ton Mile Per Hour) method, which measures a tyre's working capacity based on load and speed, is explained. Formulas for calculating basic and real site TKPH/TMPH, considering factors like cycle length and ambient temperature, are provided.
Example Calculation: An example calculation is provided to illustrate the process of determining the real site TKPH/TMPH, including adjustments for cycle length and temperature. Tables for K1 and K2 coefficients used in these calculations are included.
Tyre Selection for Transport Machines: Guidelines for selecting the ideal tyre for transport machines are provided, emphasizing the importance of matching tyre specifications with machine and site conditions. Consulting with Michelin for specific recommendations when using earthmover or truck tyres in mechanical handling conditions is advised.
General Precautions: Safety precautions for fitting and removing tyres are highlighted, stressing the importance of following recommended procedures to minimize the risk of accidents.
Procedures for Pneumatic Tyres:
  • Only trained and authorized personnel should fit or remove earthmover tyres.
  • Deflate both inner and outer tyres of a twin fitment before removing any rim fixture.
  • Do not repair a damaged wheel by brazing, soldering, or welding with the tyre still fitted.
  • Avoid applying heat to the wheel or rim when the tyre is fitted.
  • Maintain a safe distance from overhead electric lines.
  • Never exceed the wheel's inflation pressure, which may be lower than the tyre's.
  • Ensure the tyre is well positioned and seated on the rim before inflation.
  • Consult Michelin technical documentation for inflation pressures and safety guidelines.
  • Maintain recommended inflation pressure to avoid damage and ensure safety.
  • Operate tyres within design parameters to prevent performance issues.
  • Avoid dual mounting of Michelin radial tyres with diagonal ply tyres, tyres with different tread depths, or tyres with different wear levels.
Handling:
  • Avoid lifting tyres directly on the bead with a crane hook.
  • Use flat straps instead of steel slings or chains.
  • Lift tyres under the tread when using a forklift.
  • Keep bead protectors in place until fitting.
Storage:
  • Store tyres in a cool, dry place away from sunlight.
  • Protect tyres from ozone sources, UV rays, and weather.
  • Store tyres vertically and avoid stacking.
  • Store tubes, flaps, and sealing rings on smooth surfaces free from damaging chemicals.
Fitting of Earthmover Tyres:
  • TG tyres should be fitted on drop-centre, semi drop-centre, or single piece wheels, not flat base rims.
  • L2 and L3 tyres can be fitted to multi-piece SDC or flat base rims and single piece rims.
  • L3**, L4, and L5 tyres should only be fitted to multi-piece rims.
Inflation Pressure:
  • Ensure correct tyre inflation pressure for optimal tyre/vehicle performance and maximum tyre life.
  • Consult Michelin Earthmover Department for specific pressure recommendations.
Recommendations:
  • Use semi drop centre rims for TG tyres.
  • Consult the Earthmover Tyre Maintenance Guide by Michelin for more information.
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Catalog excerpts

Technical Data - Earthmover Tyres-3

TECHNICAL DATA EARTHMOVER TYRES IDENTIFICATION OF MICHELIN EARTHMOVER TYRES 4LOAD INDEX - SPEED SYMBOL 6STAR MARKING AND CORRESPONDING PLY RATING 7CLASSIFICATION OF EARTHMOVER TYRES (standardised identifi cation code) MICHELIN EARTHMOVER RANGE (pictures) 8 & 9 TYRE CONSTRUCTION 10USE OF "TYRE CHARACTERISTICS" TABLES 11EXPLANATIONS 12 to 15MICHELIN TYRE CHARACTERISTICS - TYRE LOADS (kg/lb) AND PRESSURES (bar/psi) 16 to 67COMPONENTS USED WITH EARTHMOVER TYRES AND RIMS 69 APPROVED RIMS FOR MICHELIN EARTHMOVER TYRES 70 to 75TUBES AND FLAPS FOR MICHELIN EARTHMOVER TYRES 76 & 77SEALS FOR MICHELIN EARTHMOVER...

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Technical Data - Earthmover Tyres-4

TECHNICAL DATA EARTHMOVER TYRES There are 3 major earthmover tyre families categorised by the aspect ratio H/S :(The ratio between the sidewall height and the tyre width). 100 series or standard tyre (narrow base) The e.g.: H/S 18.00 R 337.50 R 1580 series or wide base aspect ratio is approximately equal to 1 The section width, given in inches, is to 2 decimal places. e.g.: 20.5 R 25 The H/S aspect ratio is approximately equal to 0.80 The section width, given in inches, is a whole number followed by a fraction. or the section width is given in inches followed by the number 80 e.g.: 59/80 R 63Low...

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Technical Data - Earthmover Tyres-5

TECHNICAL DATA EARTHMOVER TYRES There are 4 earthmover tyre families characterized by their different tread depths (or tread heights) and which are chosen as a function of their use and the surface conditions. > D N SUPERD2 D1 External External (E2 - E3 - L2 -L3 - G2 - G3) (SUPER E3, SUPER L3) (E4 - L4 - G4) Traction, rockMichelin designation: Rock,deep treadMichelin designation: Rock,extra deep treadMichelin designation: Traction, rockMichelin designation: SUPER (N < SUPER < D1) N (Normal)e.g.: XRDN D1 = N x 1,5(L5) D2 = N x 2,5 > 750: Nominal section width in mm (or in inches)65: Aspect ratio...

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Technical Data - Earthmover Tyres-7

TECHNICAL DATA EARTHMOVER TYRES MICHELIN complementary identifi cation: T = Traction, R = Rock, V = speed, F = Flotation, P = Multi purpose, S/R = Smooth/Rocke.g.: L3T ғRock tyre (L3; Standardized identifi cation code) where traction is needed (T; Michelin code) size="-1">

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Technical Data - Earthmover Tyres-8

TECHNICAL DATA EARTHMOVER TYRES A VARIETY OF TREAD PATTERNS > For the conditions of use of each tyre according to the machine type, consult the Earthmover tyre range brochure. XMCLXM37XFXGLA2XTLA XZSL et StabilX XZSL XMPSXSNOPLUSXHA > 2 XHA - XHF L3FXLD L3TXLD SUPER L3TXLDD1 - XLDD2 XRDN - XRD1 - XRD2 XKA-XKBX MINE D2XSMDNXSMD2+ XLCX RIBXZLXLBXS >

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Technical Data - Earthmover Tyres-9

TECHNICAL DATA EARTHMOVER TYRES UNE VARITɉ DE SCULPTURES > Pour une utilisation par famille dengins et conditions dҒutilisation, consulter la Brochure gamme Gөnie Civil XMPXMH - XMH SX-CRANE ATXGCXVC XHAD - XHD1 XAD 65-1 SUPER E3T XADN E3T /E3V X-SUPER TERRAIN AD E4T XADT E4T XRA - XRBXTS E3TXMS E3RXRS E4R XZHX - QUARRY E4R X-TRACTION RD E4T X - QUARRY S E4 X HAUL E4PXDT E4T X-TRACTION RD S E3T XDM E3V - E4TXDC E3VXK - XKD1XDR E4R >

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Technical Data - Earthmover Tyres-10

TECHNICAL DATA EARTHMOVER TYRES The casing is made up of several The crown criss-crossed plies. is not stabilized. > The crown and sidewalls are formed by the same ply structure. The tread is affected by fl exing of the sidewalls, resulting in,- deformation of the tyre contact area on the ground- movement in the tread contact area.The casing plies tend to scissorӔ in relation to each other. Disadvantages:- accelerated wear. - less grip. - increased fuel consumption. The casing has only one radial several plies. ply.The crown is stabilized by > The sidewall and tread function sepa-rately. The...

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Technical Data - Earthmover Tyres-11

TECHNICAL DATA EARTHMOVER TYRES Explanation of the use of 12 to 15 "TYRE CHARACTERISTICS" tablesMichelin 15 to 63 inch tyres 16 to 67 characteristics, loads (kg/lb) and pressures (bar/psi) >

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Technical Data - Earthmover Tyres-12

TECHNICAL DATA EARTHMOVER TYRES e = maximum overall section width D = external tyre diameter (R x 2) = nominal bead seat diameter or rim diameter S = section width on measuring rim (this rim is indicated in bold) E = minimum dual spacing (on measuring rim) H = section height R = free radius (2R = D) Rؒ = static laden radius* CdR = rolling circumference* Tread depth. = tyre tread depth in mm (rubber depth that is possible to use without risk). Cap = Interior capacity of the tyre (to calculate the nitrogen quantity when infl ated with nitrogen, or the liquid quantity when fi lled)* The values of...

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Technical Data - Earthmover Tyres-13

TECHNICAL DATA EARTHMOVER TYRES How to read the load / pressure table Remember: the correct pressure of the machine (on a site and for a job) depends on the working conditions and use. In order to obtain the optimal performance from tyres, it is advised that:- the machine be weighed under working loads - the maximum distance allowed per hour for the tyre is not exceeded Maximum distance limit This is the result of the combination load /pressure which allows an economic use of the tyre. There is: - a limit on the load to obtain the best wear performance - a limit on the pressure to obtain the...

 Open the catalog to page 13
Technical Data - Earthmover Tyres-14

TECHNICAL DATA EARTHMOVER TYRES Loaders: Front Tipping This table is used when the only information available is that of the operating weight and tipping load of the loader.Front Laden This table is used in priority. The loads come from the weighing of the loader or the axle weight given by the manufacturer. The load/pressure table, using 10 km/h loaders" as a reference, is given in international standards Rear Unladen This table is used when the weight of the rear axle of the unladen loader is known or when the rear axle weight is given by the manufacturer. Compactor: 10 and 15 km/h These tables...

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Technical Data - Earthmover Tyres-15

TECHNICAL DATA EARTHMOVER TYRES Transport (rigid dump trucks, trucks, ), Articulated dump trucks, Scrapers: Standard For different speeds, the load capacity will be adapted by applying the coeffi cients defi ned by the international standards. (see table ETRTO 2008 E.7 below). The greyed box indicates the nominal load of the tire.Use speed Transport of reference 50 km/h: This table is used when the work is carried out at load speeds up to 50 km/h. This is standardised under the name œTransport 50 km/h. > Maximum speed of the machine (km/h)Variation in load capacity (%) < 15#15+ 1220+ 1025+ 830+...

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