pic: Found these on our quadrennium robot checkup

[donkehote]

Might be a good idea to put a grease fitting in the case if you guys want to keep using them long term. Just for the sake of maintenance.

[DampRobot]

We saw a similar problem in a WCP 11T pinion this offseason. It turned out that in our gearbox, the CIM itself was flexing around because we removed one of the spacers that held it in place. The flex created enough separation in the gears for the teeth to occasionally slip past each other, wearing the teeth over time. We replaced it with a new 11T and put the spacer back in, and never had problems again.

So, if you see tooth wear like this, it isn't necessarily a grease problem.

[mman1506]

Originally Posted by DampRobot

We saw a similar problem in a WCP 11T pinion this offseason. It turned out that in our gearbox, the CIM itself was flexing around because we removed one of the spacers that held it in place. The flex created enough separation in the gears for the teeth to occasionally slip past each other, wearing the teeth over time. We replaced it with a new 11T and put the spacer back in, and never had problems again.

So, if you see tooth wear like this, it isn't necessarily a grease problem.

I think running the mecanum wheels on hard floors put a lot of vibration into the shaft and did the same thing. We are using white lithium grease now which is easier to visually inspect. We might 3D print or CNC some end caps that look good.

[Gregor]

Originally Posted by donkehote

Might be a good idea to put a grease fitting in the case if you guys want to keep using them long term. Just for the sake of maintenance.

1/16"-1/32" Lexan with velcro works well here. Weighs practically nothing and you can still visually inspect the gearboxes.