Cross roller or ball slide way Linear motion guide GRV Linear motion guide Max stroke: GRV1= 13 mm ~ 61mm Guide dimension: 8.5mm Guide length: 20 ~ 80mm :: Linear Motion System :: Slide Ways - Cross Roller type and Rolling Ball type Limited travel linear system with high rigidity and high operating speed. Type GRV/GRD are style of made up of precision rollers crossed.High rigidity 2) Medium heavy load , high precision. 3) Various applications to accuracy moving