The hub 8 axially extends through {TAIL ~ both the hub collars} and {HEAD ~ both the spacer collars} 15 and 16 
The hub 8 axially extends through { TAIL ~ both the hub collars } and { HEAD ~ both the spacer collars } 15 and 16
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH