#robotics Logs

Jun 06 2020

12:27 AM mun: hi
12:33 AM mun: how do you determine if a bearing is strong enough for a load? I'm looking at a 30206 tapered roller and it has a static radial rating of 51800N
12:33 AM mun: Does that mean if I were to have it at a joint and the arm weighs less than 5180kg, then I'll still be fine? That's a lot of weight for such a tiny bearing...
12:35 AM Jak_o_Shadows: Ultimately it ends u just matching. But there's like correction factors, dependent on ow you're actually going to use it
12:37 AM mun: something like this? https://www.amroll.com/bearing-selection-load-life.html
12:37 AM Jak_o_Shadows: Yeah, I think so.
12:38 AM Jak_o_Shadows: But if your thing is small enough, does it matter? ALso if it is really intermittent use
12:39 AM mun: Jak_o_Shadows well, i just wanted to make sure. i'm planning to have one in J3 and the load is about 4kg. i'm not sure if i should have one or two of these bearings
12:41 AM mun: but if this bearing can indeed sustain 50kN, then my load would barely cause any stress
12:41 AM Jak_o_Shadows: ¯\_(ツ)_/¯
12:42 AM Jak_o_Shadows: Two might be nice, in that you could arrange them such that the weak bit of each bearign is cancelled out
12:42 AM Jak_o_Shadows: the weak direction
12:42 AM Jak_o_Shadows: Might make the whole thing heavier/more expensive
12:42 AM mun: yeah
12:49 PM logicmoo is now known as dmiles
01:09 PM SpeedEvil is now known as Guest80116