Rubber seals motor bearings ?

[Stevenj76]

I’m struggling to get decent quality metal shield bearings for kraton 4s motor , is it ok to use rubber shield abec 5 rated

 

[FatCatRC]

generally speaking rubber sealed are better than steel shielded bearings. Most guys replace the metal shielded bearings for rubber sealed from fast eddys etc.

 

[Yas]

You can still use them for the motor (I have for my 3s Typhon with no issues), however, metal shielded bearings are a little more efficient and so are better suited for the motor. Rubber sealed bearings are a little less so and are preferred for the drivetrain. Keep in mind when RPMs are too high and temps get too hot, the rubber seals could potentially fail

 

[FatCatRC]

You can still use them for the motor (I have for my 3s Typhon with no issues), however, metal shielded bearings are a little more efficient and so are better suited for the motor. Rubber sealed bearings are a little less so and are preferred for the drivetrain. Keep in mind when RPMs are too high and temps get too hot, the rubber seals could potentially fail

Okay I did not know that. Listen to Yas he knows his sh*t ?

 

[Yas]

Okay I did not know that. Listen to Yas he knows his sh*t ?

Still learning ? mostly from the advice from the more experienced people on here ? I don't know too much on bearing ratings, but the higher the ABEC the better

Just to add to the topic - the most efficient for motors are ceramic hybrid bearings but they're marginally more expensive. They don't (really) require maintenance, have high heat resistances and are essentially frictionless. They're more of a fit and forget solution (providing your pinion mesh is fine), although I've yet to try them myself

 

[Stevenj76]

Thanks for the replies , the ones I’ve coming are abec 5 but it didn’t say whether they are contact or contactless seals I believe contactless supposed to be ok for motors , if you’re using them in the 3200kv motor I should be fine in the 2200 Kv , mine runs a lot cooler than my typhon motor

 

[Stevenj76]

Bearing came and I fitted them but there was still a knock on the shaft when installed , when I took the rota out again the front bearing came out on the shaft again . Supposed to be abec 5 too. Back on the hunt again it looks like. Not easy here in the uk to buy some good motor bearings

 

[chrisexv6]

Not sure what size you need but I ordered a 2 pack of TRB 5x16x5 hybrid ceramics from Amazon for $14.

 

[Stevenj76]

Mine has the 5x13x4 , I’d be happy to pay good money for the original ones that were in

 

[chrisexv6]

Mine has the 5x13x4 , I’d be happy to pay good money for the original ones that were in

Note sure how shipping works, but Amazon (US) has ceramic hybrids:

https://www.amazon.com/5x13x4mm-Precision-Hybrid-Ceramic-Bearings/dp/B0172L55KE

 

[Stevenj76]

As they seem to be hit and miss I’m really only looking for uk based . But thanks

 

[chrisexv6]

As they seem to be hit and miss I’m really only looking for uk based . But thanks

NP. If I happen to come across one I will let you know.

Ceramic seem to be "the way" but for the whole truck, pretty expensive. For the motor I think its a no brainer.

 

[Soppy]

Mine has the 5x13x4 , I’d be happy to pay good money for the original ones that were in

I thought 1 bearing was 5x16x5 and the other was 5x13x4.

 

[Stevenj76]

I thought 1 bearing was 5x16x5 and the other was 5x13x4.

No only on the 3s motors and they have to be recent , this one was bought new year this year