@nicholas.seward,
4 bearings/joint:
With the longer arms, wider cross section of the arm (50 mm), soft materials, offset arms, warm temperatures, the narrow width of one 608 bearing in a shallow pocket,
undersized bolt or rod, and the potential for creep over time, the bearing might rotate in it's pocket, and/or the arm could translate (shift) because of a loose fit up.
So I'm adding a bearing pocket on both sides of each of the arms in hopes to address these potential combinatorial forces.
I know that the bolt is supposed to prevent this to a large degree from happening by sandwiching the assembly together, but I want to be doubly assured.
If I don't use a printed part on the end of an arm, I'll be boring a through hole (Dia 22 mm), in that case I'll use a spacer between two bearings.
I'm being cautions, I don't want sloppy joints, I haven't started on the design, so it's all subject to change.
Tks for the notes!
4 bearings/joint:
With the longer arms, wider cross section of the arm (50 mm), soft materials, offset arms, warm temperatures, the narrow width of one 608 bearing in a shallow pocket,
undersized bolt or rod, and the potential for creep over time, the bearing might rotate in it's pocket, and/or the arm could translate (shift) because of a loose fit up.
So I'm adding a bearing pocket on both sides of each of the arms in hopes to address these potential combinatorial forces.
I know that the bolt is supposed to prevent this to a large degree from happening by sandwiching the assembly together, but I want to be doubly assured.
If I don't use a printed part on the end of an arm, I'll be boring a through hole (Dia 22 mm), in that case I'll use a spacer between two bearings.
I'm being cautions, I don't want sloppy joints, I haven't started on the design, so it's all subject to change.
Tks for the notes!
