1multi-faced installation,hollow output shaft structure 2all kinds of input and output ways 3easy to link with other machinery Rv series worm gear speed reducers: 1.Center to center spacing:025,030,040,050,063,075,090,110,130,1502.large speed ratio range:such as 7.5,10,15,20,25,30,40,50,60,80,100,150 and so no.3.small volume,low weight can save space for mounting.4.high efficiency,high mechanical ...