• Bearing cups are made from formed bar stock or precision forgings. • Bearing surfaces are case hardened to a uniform depth for strength and durability. • Mounting key and bolt holes are machined for aprecise fit to mating parts. • Needle bearings are made from the highestquality bearing steel and are sized formaximum life and load carrying capabilities. • Seals are made of nitrile rubber or cork foroptimal grease retention and contaminantexclusion. • Lubrication channels and grooves are providedto allow positive greasing of each bearing cupfor extended joint life. • Trunnions are put through a deep carburizationprocess and ground to precision tolerances toinsure maximum life expectancy and smoothrunning surfaces. • Journal trunnion ends are ground to length toinsure proper fit of mating parts.