Pillow Bearing or C-Channel?


#1

Hello,
I have noticed a lot of different base elevated designs use either pillow bearing or a c-channel to elevate the base.
I was wondering if anybody could explain the differences or reasons to use one or the other?
Thanks


#2

Pillow bearing would be weaker than c channel.(if used correctly)


#3

pillow bearing elevates with little to any obstruction to the wheels but c channels are stronger


#4

We use pillow bearings and they haven’t given us any issues at all. We’ve gone through two competitions and haven’t needed to replace them. They also have less friction than a bearing in C-channel.


#5

We use a pillow bearing on a c Chanel for a very elevated chassis.


#6

If the screws are sufficiently tight, and there isn’t too much friction, I think either could work.
I guess if you’re worried about the pillow bearings breaking, you could double them up by putting two side-by-side to change the force distribution.


#7

also, unless your chassis is full length, you should not need them with 4" wheels


#8

I use pillow bearings on mine and it works really well. I do notice that it is much easier to keep friction down with them.


#9

We have used pillow bearings all season, they work very well


#10

My team uses pillow bearings. If you want to mount the motor at the same level as the wheel axle then you should use c-channels, otherwise you will have motor wire pointing down into the ground. If you are ok with using chain or gears than pillow bearing are good.

Pillow bearings are weaker than c-channels. We had our intake on pillow bearing and the intake was accidentally ripped out by another robot during a match and the pillow bearing broke.


#11

Our team uses pillow bearings as well. No problem so far. One thing about c- channels to remember is that you can’t run a full length, so you might have to cut the c - channels short