This is a vertical rack rolling machine designed to produce Spline, Serrations, Oil grooves, Threads and special forms, using special racks as a tool for rolling most accurate splines and threads. r In a single cycle, we can roll, splines as well as threads simultaneously or two different splines one with helical and one with straight serrations. We can roll axle shafts for modern front wheel drive passenger cars having splines on both ends, in a single cycle.