CHAOYANG LONGMARCH TYRE BLOG

TKPH and Heat Build-Up Considerations for Mining Truck Tire Planning Mining truck tires fail for many reasons, but heat is the silent killer. Every time a haul truck rolls through a pit, the tire flexes, deforms, and generates internal friction. That friction becomes heat. If the heat outpaces the tire's ability to dissipate it, the internal temperature climbs past the safe threshold. The result? Separated belts, blown treads, and unplanned downtime that costs thousands of dollars per hour. Relevant specifications and application guidance are available through Tire Education . The tire industry quantifies this problem with a metric called TKPH — Ton Kilometer Per Hour. It measures the work a tire does under load and speed. Planning mining truck tires around TKPH and heat build-up considerations is not optional paperwork. It is the difference between a tire that runs 6,000 hours and one that fails at 1,500. This guide walks you through a practical, step-by-step framework for cal...

Star Rating and Load Capacity Differences in OTR Tyres and Mining Truck Tires Choosing the wrong OTR tyre for a mining operation is an expensive mistake. A tyre that cannot carry the load will overheat, wear unevenly, and fail prematurely. A tyre with too high a star rating for the application wastes money on capacity you will never use. The star rating system exists to help you match the tyre to the real-world demands of your haul roads, payloads, and cycle times. This guide explains how star ratings relate to load capacity, what the numbers actually mean, and how to select the right tyre for your specific mining conditions. Key Takeaways Star ratings indicate the ton-kilometer-per-hour (TMPH) capability of a tyre, not just its physical strength. Higher star ratings mean the tyre can handle more heat generation from higher speeds and heavier loads. Load capacity is also defined by the tyre's load index, ply rating, and inflation pressure—not the star rating alone. Matching...

Repair, Retread, or Replace: Decisions for Damaged Mining Truck Tires Introduction Every mining operation faces the same question when a haul truck pulls in with a damaged tire: do we repair it, retread it, or scrap it and buy new? The answer determines not just this month's budget, but the safety of your drivers and the productivity of your entire fleet. Traditional approaches treat every tire failure the same way, which leads to wasted money on repairs that don't hold or premature replacement of casings that still have life left. This guide walks through a practical decision framework for damaged mining truck tires. It covers how to assess damage severity, when a repair is structurally sound, when retreading makes economic sense, and when replacement is the only safe option. Fleet managers, maintenance supervisors, and procurement teams will find a repeatable process they can apply to every tire failure. The goal is simple: make decisions based on data, not guesswork. Ke...

OTR Tyres Classification Codes for Earthmovers, Loaders, and Graders Introduction Buying OTR tyres without understanding classification codes is like ordering spare parts blindfolded. You might get lucky, but more often you end up with a tyre that overheats, wears unevenly, or fails before its time. The OTR tyres classification codes for earthmovers, loaders, and graders determine load capacity, speed rating, and application fit — get them wrong and you are looking at downtime that costs far more than the tyre itself. This guide breaks down the alphanumeric system used across the industry, explains how to match codes to specific machines, and shows you how to avoid the costly mismatches that plague many mining and construction operations. Whether you run a fleet of 20-tonne haul trucks or a single motor grader, understanding these codes will help you spec the right rubber the first time. Key Takeaways OTR tyre codes combine width, aspect ratio, construction, rim diameter, load i...

Mining Truck Tires Built for Haul Roads, Rock Cuts, and Heavy Payloads Introduction Haul roads at surface mines are not roads. They are engineered dirt highways with 10% grades, razor-sharp rock cuts, and surfaces that shift with every rain event. The tires that run on them carry 40 to 60 tons per corner, often at speeds below 30 km/h, yet they must survive thousands of hours of brutal service. Standard highway tires fail here within weeks. Sidewall cuts, tread chunking, and heat-related separations end their life prematurely. The problem is that many mine operators still spec tires based on price per unit rather than cost per hour. That approach costs more in the long run through downtime, premature replacement, and unsafe operating conditions. This guide explains what makes mining truck tires built for haul roads, rock cuts, and heavy payloads different, and how to select, maintain, and operate them for maximum service life. It is written for mine managers, fleet supervisors, and...

Maintenance Routines That Improve Regional Truck Tyre ROI Fleet managers running regional routes face a different cost equation than their long-haul counterparts. Regional truck tyre ROI depends on frequent stops, tight delivery windows, and roads that punish tyres in ways highway miles never will. The problem is that most maintenance advice assumes one driving pattern, and that assumption costs you money. A regional operation might cover 300 to 500 kilometres per day, often on secondary roads with more debris, potholes, and curbs. Heat builds differently. Wear appears unevenly. And the tyre that performed flawlessly on a motorway run can fail prematurely when treated like a short-haul workhorse. This guide walks through a practical, step-by-step maintenance framework designed specifically for regional fleets, with quantified targets you can measure against. Key Takeaways Regional tyres need pressure checks every 7 days, not the monthly cycle common in long-haul fleets. Rotating...