SINYUM 608 2RS Skateboard Bearing 8X22X7 Review

I don't skate so I can't confirm how well they work or don't work for skateboards. I'm a fabricator and they work really well when I need to install casters on something I've built. Great price in my opinion.

Need camp for a hobby, but I need a lot. It seemed like a good buy. Didn't know it was goodbye instead. It's like abec 0. Like motion 0 in general. I try to move it with my finger, it just won't move.

40 out of 50 were hard/uneven or very tight, hardly turning. The other 10 were barely "good" and by good I mean they spun a bit more freely than the rest. I wouldn't use these 10 anyway as the bearings should be loose with the lowest possible friction, which is nowhere near the case was. Total waste.

Got them on a whim to see if the cheap ones would last at least a few months. Literally none of the bearings in the box were good. They all had a really hard/bumpy feel when hand spun. Extreme tolerance and waste of money. Better to focus on things, messing around with cheap things like that in the slums isn't such a good idea.

Preparing Projects to Stay Busy in Retirement Made an attic shelf by building moveable trays to store trash cans and boxes. It is planned to use them as rolls on trays with containers. Got the axles, I plan to cut slots for the short axles and bearings (pulleys) and fill them with epoxy, then install the cable. Of course, the worst thing is that I have to create a table that defines every element that I might need to retrieve. A piece of cake!

It was exactly what I expected. High quality ball bearings in a nice tube pack of 10. They were clean and turned well, and with a little light oil they worked fine, just the way I wanted them to. After reading some reviews of smearing, dirt and poor handling I was a little hesitant but I don't know what people have but what I have is exactly as it is portrayed. I make crates for trucks and they work great as casters.

They all have a very noticeable wobble when you move them in your hands. On a skateboard or inline skates, that means excessive heat and wear, not to mention what I can see through "shields" meaning they're unsealed. I think it's worth buying higher quality bearings. However, I use them for my 3D printing projects and they work well for what I need. A professional tip, 8mm, is about 0.002" more than 5/16", so a 5/16" aluminum or steel rod with epoxy fits in very nicely!

I knew for the price these bearings might not last long. But what I got was almost useless. I had to clean all the bearings right out of the box because they were all very sticky. Then most of them hardly turn after cleaning. Each bearing had to be re-greased and turned by hand for a few minutes to loosen enough to almost be useable. Once installed in the assembly, they still roll extremely hard. I don't know if the grease melted from the factory in shipping or something, but it was definitely…

I need volumetric bearings for various hobby projects. These basically fit the bill. I was expecting a little better quality than what I received but they are great for my needs. There are *MANY* differences in quality among the 50 I received. They are all lubricated unevenly and require maintenance before use. Luckily the rubber shields don't fit very well so they can fall out on their own if you do then you can mix and match the gaskets until one fits and stays in place. Some spin smoothly…