As shown in FIGS 2 and 3, for example, bearing assemblies in an aircraft wheel may have their axially outer sides sealed with {HEAD ~ a bearing seal} to keep out contaminants, while their axially inner sides may include a simpler baffle to retain {TAIL ~ lubricant} 
As shown in FIGS 2 and 3 , for example , bearing assemblies in an aircraft wheel may have their axially outer sides sealed with { HEAD ~ a bearing seal } to keep out contaminants , while their axially inner sides may include a simpler baffle to retain { TAIL ~ lubricant }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL