张紧轮轴承隔套
tension wheel shaft bearing spacer
张紧轮和轴承总成
idler and bearing assembly
牵引链张紧轴承
drag chain takeup bearing
张紧轮轴固定螺母
tension wheet shaft fixing nut
齿轮轴轴承拆卸
gear shaft bearings removal
船用齿轮轴轴承
marine gear shaft bearing
链轮轴轴承固定螺母
sprocket shaft bearing retaining nut