...Thats Because ONLY ONE 'Needle' is Ever Taking the FULL Directed 'Centered' FORCE, at any One Moment, Theoretically!! Where-as The Bronze Takes The Full Load Spread-Over HALF of the Inner Diameter, at the Axle. Just Thinking Out-Loud, I could be Totally Wrong!
Very Interesting! I never knew of that Lifter! 350% More Load Bearing!?
Thanks for Posting This.