Why does only one of my skateboard bearings spin for a long time, and the others dont?

Question

On my board, the front bearings spin faster then the back ones. but, one of the front wheels spins for 47 secs. and the other spins for 28 secs.

The back ones only spin like 20 secs. Why are the wheels spinning at different speeds?? I have Lucky's ABEC 7 bearings from zumiez. please help, thanks ;D

Answer 1

some of them are probably full of dust/dirt etc.

just put some WD-40 on them and spin them around till they dry.

it's what i do and they work just like new.

I also recommend Bones red and Bones swiss bearings.

Answer 2

looseen them and oil them

Answer 3

Try loosing them or use oil.

Answer 4

Well, the ones that spin longer are probabaly better lubricated or are in better condition.

It could also be because you might have the bolts that keep the wheels on too tight on some of them.