A frictionless plastic bearing material is not only interposed between the metal plates with {HEAD ~ its opposite sides} engaging opposite plates for bearing and spacing {TAIL ~ purposes} but is also curved arcuately to conform to the circular curvature of the race 
for spacing
A frictionless plastic bearing material is not only interposed between the metal plates with { HEAD ~ its opposite sides } engaging opposite plates for bearing and spacing { TAIL ~ purposes } but is also curved arcuately to conform to the circular curvature of the race
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH