履带支重轮缘总成
track roller rim assembly
单凸缘履带支重轮
single flange track roller
双缘履带支重轮
double flange track roller
履带支重轮提升叉
track roller lifting fork
履带支重轮螺纹表面
track roller thread surface
左履带支重轮架调整
left track roller frame adjustment
履带支重轮架总成
track roller frame assembly