| Design of 59/80R63 All-steel Giant Off-The-Road Radial Tire |
| Received:November 30, 2024 Revised:November 30, 2024 |
| DOI：10.12136/j.issn.1000-890X.2025.12.0936 |
| Key Words: all-steel giant off-the-road radial tire；structure design；construction design；durability |
| Author Name | Affiliation | E-mail | | ZHANG Guoying | China Shenhua Energy Co., Ltd. Halwusu Open pit Coal Mine | 10570362@ceic.com | | ZHANG Jianyu | China Shenhua Energy Co., Ltd. Halwusu Open pit Coal Mine | | | QIAO Dongqing | China Shenhua Energy Co., Ltd. Halwusu Open pit Coal Mine | | | XU Xueji* | Sailun Group Co., Ltd | xueji.xu@sailuntire.com |
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| Abstract: |
| The design of 59/80R63 all-steel giant off-the-road radial tire was described.In the structure design，the following parameters were taken：overall diameter 4 022 mm，cross sectional width 1 451 mm，width of running surface 1 304 mm，arc height of running surface 98 mm，bead diameter at rim seat
1 595.4 mm，bead width at rim seat 1 117.6 mm，maximum width position of cross–section（H1/H2） 0.97，the tread using a longitudinal and transverse pattern design，pattern depth 116 mm，number of pattern pitches 42，block/total ratio 75.1%.In the construction design，the following processes were taken：the tread forming adopting composite winding process，the belt using a six-layer belt structure，1# and 2# belt using 7×（3＋9×0.30）＋0.20HT steel cord，3# and 4# belt using 7×（3＋9＋15×0.245）＋0.245HT steel cord，5# and 6# belts using 4×6×0.25HE steel cord，the carcass using 7×（3＋9＋15×0.245）＋0.245HT steel cord，the green tire building using five drum secondary molding machine.The performance test results of the finished tire showed that，the inflated peripheral dimention，X-ray inspection results and durability of the tire met the design and national standard requirements，the road test time had accumulated over 5000 h， and the mass production conditions were met. |
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