pic: Hex Bearings

[T^2]

loading photo ...

[Travis Schuh]

Where were these bearings used? Any details on the situations that caused them to fail?

[Bryce2471]

Originally Posted by Travis Schuh

Where were these bearings used? Any details on the situations that caused them to fail?

+1

It would also be interesting to here how VEX plans on fixing this problem.

[wilsonmw04]

since the suppliers of these items are limited, I am not sure what Vex can do about these. However, AM has already put these out for sale.

[T^2]

Originally Posted by Travis Schuh

Where were these bearings used? Any details on the situations that caused them to fail?

Both bearings failed as part of the polycarb intake arms. The second one, in particular, was fresh, and failed in its first match. 1678 didn't have any problems with these bearings throughout the 2014 season.

[Travis Schuh]

Originally Posted by T^2

Both bearings failed as part of the polycarb intake arms. The second one, in particular, was fresh, and failed in its first match. 1678 didn't have any problems with these bearings throughout the 2014 season.

Where in the polycarb arms were they? Do you know what particularly in the match caused these? It sounds like it was a particular impact or something, rather than a life issue.

I guess I am surprised that after all you put that robot through this season, that you just had 2 failures in close succession.

I am curious as to the details so that we can learn from them for next year.

[T^2]

Originally Posted by Travis Schuh

Where in the polycarb arms were they? Do you know what particularly in the match caused these? It sounds like it was a particular impact or something, rather than a life issue.

I guess I am surprised that after all you put that robot through this season, that you just had 2 failures in close succession.

I am curious as to the details so that we can learn from them for next year.

They were both in the rear arm, on the end opposite the gearbox. (The second replaced the first.) From what I saw from the stands, neither failure was immediately preceded by any sort of contact with another robot.

[Aren_Hill]

You guys have such fun timing,

These guys will be in stock soon (bigger inner race).

-Aren

[Richard Wallace]

Originally Posted by Aren_Hill

These guys will be in stock soon (bigger inner race).

Looks like the weight went down very slightly. What else is different? Smaller balls and more of 'em?

[FrankJ]

The bearings get used on drive trains without that kind of failure. It seem the drive train would have a higher loading. I am a little hesitant to blame this on bearing quality. Maybe the shaft is bending or severely misaligned which is torquing the bearing rather than a axial load?

[Nathan Streeter]

Originally Posted by FrankJ

The bearings get used on drive trains without that kind of failure. It seem the drive train would have a higher loading. I am a little hesitant to blame this on bearing quality. Maybe the shaft is bending or severely misaligned which is torquing the bearing rather than a axial load?

I actually disagree... seems like the intake would actually likely have significantly higher impact loads (but probably smaller steady, radial loads).

[JackFisher]

Originally Posted by FrankJ

The bearings get used on drive trains without that kind of failure. It seem the drive train would have a higher loading. I am a little hesitant to blame this on bearing quality. Maybe the shaft is bending or severely misaligned which is torquing the bearing rather than a axial load?

On our drive trains, we have shattered these hex bearings two seasons in a row. Its great that vex has a redesigned option now. The part of the bearing that failed on our drives was the corner where the steel was a bit thin due to the hex.

[AdamHeard]

Originally Posted by JackFisher

On our drive trains, we have shattered these hex bearings two seasons in a row. Its great that vex has a redesigned option now. The part of the bearing that failed on our drives was the corner where the steel was a bit thin due to the hex.

We didn't break any in 2013, we just broke so many this year it seemed like both years!

[RonnieS]

Are the Vexpro V2 hex bearings the same as andymarks HD hex one? There is a fairly significant price difference.
-Ronnie

[Aren_Hill]

Originally Posted by Richard Wallace

Looks like the weight went down very slightly. What else is different? Smaller balls and more of 'em?

Well, larger inner race, so yes, that does mean smaller balls and more of them.

-Aren