履带支重轮架总成
track roller frame assembly
履带支重轮架钻具
track roller frame boring tool
左履带支重轮架调整
left track roller frame adjustment
叶轮轴支承轴承
impeller shaft support bearing
单凸缘履带支重轮
single flange track roller
履带支重轮
track roller
Roller GP-track-single flange
履带支重轮固定螺栓
track roller retainer bolt
履带支重轮和托链轮配置总成
Roller AR-track & carrier