The guides define respective movement profiles conjugated and shaped so that each rolling element abuts on {HEAD ~ the respective guide} at {TAIL ~ each point} of the latter along the movement path 
The guides define respective movement profiles conjugated and shaped so that each rolling element abuts on { HEAD ~ the respective guide } at { TAIL ~ each point } of the latter along the movement path
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH