绳轮 meaning in Chinese

cable pulley
rope pulley
rope sheave
sheave

Cranes ; rope pulleys ; dimensions of hubs and bearings
起重机.绳轮.轴承和轮毂尺寸
Lifting appliances ; sheaves , technical conditions
提升设备.绳轮.技术条件
Cranes ; rope pulleys ; selected ranges and correlation of diameters and overall widths
起重机.绳轮.选择范围和直径与宽度的配合
Cranes ; bottom blocks ; type c rope pulleys with deep groove ball bearing , without internal sleeve
起重机.下滑车.无内套带深槽滚珠轴承的c型绳轮