The improvement of a track roller of an agricultural machine is a plurality of rollers which are mounted on the chassis of the agricultural machine and are freely rotatable against the inner side of the crawler belt. The rollers are arranged on the axle of the wheel, and the axle is locked on the chassis of the agricultural machine, and The roller is divided into two halves to form a symmetrical rim, and a groove is formed between the two rims, and the rims of each half are respectively disposed on the axle through the bearing shaft and can be freely rotated. When the agricultural machinery is driving on uneven ground, or turning and turning, the rims on the two sides of each roller are freely rotated on the axle by the bearings, so that the friction and stress are from the respective sides at the first time. The rim and its bearings are individually subjected to interference without interference, so that the rims and bearings that are most prone to wear and tear can be extended in service life, and the rims and bearings on each side can be replaced and repaired separately, thus making maintenance and repair more Easy and reduce the cost of repairs.一種農機履帶滾輪的改良，是裝設在農機底盤上的數個抵住履帶內側而可自由轉動的滾輪，各滾輪是軸設在一輪軸上，再令該輪軸鎖固於農機底盤上，且令該滾輪分開成兩半而呈相對稱的輪緣，並令兩輪緣之間形成一凹槽，同時令各半的輪緣各透過軸承軸設在輪軸上而可各自自由轉動，故當農機在不平的地面上行駛、或轉彎、迴轉時，各滾輪之二側的輪緣，因係透過軸承而在輪軸上各別自由的轉動，讓摩擦力與應力在第一時間由各側的輪緣及其軸承各別承受而不干涉，故令最容易磨損消耗的輪緣及軸承得以延長使用壽命，且各側的輪緣及其軸承都可以各別更換維修，因此讓保養維修更為容易、並可降低維修的成本。
