Tire repair goes big time
Repairability: the vital and too often overlooked factor in OTR tire management
When we talk about Off-the-Road (OTR) tires, most people immediately think about the gigantic equipment with tires as tall as a single story house. But OTR tires are also part of the local sand and gravel pits as well as the municipalities and small construction companies.
No matter how you look at it, practically every segment of the construction industry is dependent upon mining. Without it, there wouldn’t be roads, utilities or the materials to provide a foundation for the structure being built. The current OTR tire shortage is proving to all segments of the mining and construction industries the importance of tire maintenance and getting the maximum efficiency and longevity from your tire investments.
Realizing the best cost-per-hour from an OTR tire is recognizing when and if a tire can be effectively retreaded and/or repaired. A typical 57” OTR tire stands about 12 feet tall and can cost $50,000 or more to replace. This same tire, if properly managed, can be retreaded for approximately 40 to 50% less than the cost of new, thereby providing mine operators with significant savings.
Repairability
The vital and too often overlooked factor in OTR tire management is their repairability.
The last shortage of all sizes of OTR tires spawned a whole new interest in quality repair methods and materials for these giant tires. This segment of tire management is an industry unto itself with only a handful of qualified manufacturers and trained technicians who can instruct tire repair personnel in the best ways to perform this difficult and extremely cost effective service.
A severely damaged tire like the one mentioned above can also be repaired for a fraction of the replacement cost before going back into service to run out its life or get another life through retreading.
Materials
For many decades basic tire repair standards and material have been available but with the advent of much larger radial tires, mega-size haul trucks, longer and more difficult haul roads, tire repair has become a hot item for mine managers and tire management firms all over the world. Tire repair manufacturers have had to change the old standards and parameters of reparability and to accomplish this we have developed new materials and components for tire repair products, new designs for these repair units and much more refined training programs to ensure best results.
For the most part, tire “patches” have traditionally been made using nylon, polyester or Kevlar cord plies embedded in rubber. Some have been totally uncured and equire a vulcanizing process to properly bond the repair unit to the tire, others are “precured”, using the same components, but require only a chemical vulcanizing process. Yet another style of repair “patch” uses a dual-cure system which has the flexibility of being able to use a heat cure system or chemical application. Each
style has found its place in the market and everyone has an opinion as to which they prefer. Cable replacement technology has also found its own niche in the OTR tire repair industry and has changed the parameters of standard tire repairs in many areas.
Giant off-the-road (OTR) tires play a vital role in all mining operations throughout the world, some with up to 400 tons of carrying capacity. The larger sizes of OTR tires can weigh up to 12,000 pounds each. With this kind of weight and highly engineered casing design, tire manufacturers as well as end users and tire service ompanies now realize more than ever the importance of proper repair techniques. This is not an area where shortcuts are even considered, the financial repercussions could be staggering, not to mention the safety and welfare of everyone at the site.
At the end of the day, the lowest cost per working hour for the tire is one of the most important factors involving tire usage at mines and worksites, second only to the safety of the personnel involved. Responsible users tend not to go the cheapest route but instead will regularly monitor their repair procedures to ensure the best results.
Outsourcing
If you don’t have the expertise, ability or trained technicians to properly maintain your tires, consider outsourcing this part of your business to a competent tire service company. This is actually an emerging trend. Through this practice more companies are focusing on their core business of moving ore and leaving the tire program to experts in the field. These service companies know how to ensure correct repair procedures, perform tire pressure checks and are aware of how to identify problems such as over-loading, speeding, poor road management and dual tire mismatching to name only a few of the issues faced. All of these issues seriously shorten the life of the tire and create a poor cost-per-hour factor for the site management to deal with.
The repair industry plays a very important part in helping those in the giant tire industry to be environmentally responsible citizens, enabling giant tire users to do their part while being more efficiently productive. Environmentally speaking, repairing and/or retreading a giant tire saves our planet an enormous amount of natural resources and enables the tire to enjoy a second – and sometimes even a third life cycle in full service.
Learn to get the best return on your OTR tire investment; it’s a much larger and more costly component of the mining and construction industry than you may think.
- Wayne Jackson, International Tire Repair Solutions Inc.
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