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The introduction of the radial tire has had an important and serious impact on rim performance. Due to the special construction of the radial tire, it has a more flexible sidewall, causing more movement in the bead area.
This deflection and movement in the bead area, which causes flange walking and rocking, and the added stresses of higher operating pressures, are the major reasons for rim back section failures and flange failures. The radial tire transfers over 75% more stress than the bias tires to the rim base.
RIMEX has a philosophy of staying 'close to the customer', allowing us to work with our customers and develop solutions to the significant, but often overlooked, problems of early rim failure.
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In most mining operations, tires are the second biggest operating cost behind fuel. Products available to extend the life of tires, thereby lowering operating costs, are well worth examining.
The most common tire problems are air leakage, irregular tread wear, bead separation and sidewall separation. The improper seating of the radial tire's bead usually causes most of these problems.
Excellent tire life can be achieved through proper selection of a tire for a particular application and by maintaining the correct air pressure. Tire traction, tread life, cut resistance and rock impact resistance are all directly related to constant tire pressure.
A tire itself will not lose air. Air loss occurs as a result of poor manufacturing tolerances of rims and components or, through the o-ring seal, tire bead seating areas, or by any external damage done to the tire.
The movement and flexing between side rings and the rim base leads to excessive movement and damage in the tire's sidewall and sole. This causes air loss, which contributes to premature tire failure.
With the increased traction of a radial tire, movement between the bead seat band, o-ring and lock ring is very common. This movement is a major cause of air loss and premature tire failure on standard rims. This movement and air loss is eliminated on RIMEX TSR wheels and rims.
Standard rims are constructed with knurls or serrations on the bead seating areas. To be mounted correctly, a tire's bead requires a flat surface and 100% contact between the bead and that surface.
RIMEX fully machines the bead seat areas in both MES and TSR products, offering the very best support for the tire bead. Only a fully machined surface can offer this complete seal.
Let us explore the further advantages of RIMEX products:
MES
All MES rim components are manufactured to be fully compatible with standard product. We offer fully machined bead seating areas and hot formed side rings for superior strength and tire support. Our machining process allows us to add material mass in critical areas where rim cracking is common.
TSR
The design of the TSR is unique as it uses a taper concept to secure all components in place. Absolute stability of components and the tire is achieved as movement between parts is eliminated. When inflated, the rim parts lock into their tapered land areas.
The benefit of the TSR design is absolute tire support. The flanges of the wheel do not move on the base. The tire is anchored with complete stability and no air pressure is lost. As well as tire life being extended, the life of rim components is increased as there is no wearing or fatiguing of the parts from component movement.
The new sizes of scientifically designed low-profile tires designed to operate at lower air pressures and carry higher loads, exert substantially more pressure on a rim. The flexing and movement of the tire often leads to greater movement of the tires' beads along the seating areas of the rim. The RIMEX TSR Series is designed to stabilize and anchor the tire beads, allowing the radial tire to operate to its design potential. |
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