惰(duo)輪由(you)輪緣、輪輻和輪轂(gu)三(san)部分組(zu)成(cheng)。設(she)計帶(dai)輪時(shi)，應使(shi)其結構便于(yu)(yu)制造(zao)，質(zhi)量分布均勻，重量輕，并(bing)避免由(you)于(yu)(yu)鑄造(zao)產生過(guo)大的內應力。

當V>5m/s時進(jin)行靜(jing)平衡(heng)，當v > 25m/s時進(jin)行動平衡(heng)。同(tong)步帶(dai)輪材料中常用(yong)(yong)(yong)(yong)灰(hui)鑄(zhu)鐵、45#鋼(gang)、鋁(lv)合金、銅或工程塑(su)料。灰(hui)鑄(zhu)鐵應用(yong)(yong)(yong)(yong)廣泛，當V≤30m/s，V ≥ 25 ~ 45m/s時使用(yong)(yong)(yong)(yong)HT200。則宜選用(yong)(yong)(yong)(yong)創造生鐵開鑄(zhu)鋼(gang)件，也能用(yong)(yong)(yong)(yong)厚鋼(gang)板沖(chong)壓(ya)模(mo)具(ju)一電焊焊接同(tong)步帶(dai)輪。小輸出(chu)功率傳動系統(tong)能夠用(yong)(yong)(yong)(yong)鋁(lv)鑄(zhu)和(he)塑(su)膠(jiao)。