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To chime in on the sealed and shielded topic-
Rubber sealed bearings are most of the time a contact seal. This does a great job at keeping lube in and dirt out. At the same time those contact seals are creating drag which is our worst enemy.
Shielded bearings have metal shields that are non contact. These will allow the bearing to spin as free as possible but at the same time its doing nothing in particular to protect the internals of the bearing. It really acts as a dust cover.
In this type of application shielded bearings should work fine with a drop or two of oil on them regularly. As stated before too much oil will attract dirt.
Keep in mind, oil is thinner and will allow a freer spinning bearing but dissipates much quicker. A grease in this application would do a great job at keeping the bearings lubed longer and keeping dirt out, just would cause to much drag.
We have a lite weight oil in a syringe which makes it really easy to apply http://www.bocabearings.com/bearing-inv ... tning-Lube
We do have a bearing cleaner as well http://www.bocabearings.com/bearing-inv ... tning-Lube
Bearings are not sexy and people don't want to think about them unless they have too. At the same time they do require some love and care.
Also a ceramic hybrid which we have available as well would be a more maintenance free alternative. Ceramic bearings can be run dry. In an effort to take care of your stuff, keeping them lightly oiled is always recommended for long life. These bearings will run smoother because of the glass like surface of ceramic. They will also help reduce motor running temps because they are virtually friction less. As asked earlier ceramic does weigh less but with a bearing this small you probably wouldn't really notice the difference. Orange seal ceramic hybrids
I also have non contact rubber sealed ceramics. Best of both worlds. No added drag but still keeps lube in and dirt out.
Rubber sealed bearings are most of the time a contact seal. This does a great job at keeping lube in and dirt out. At the same time those contact seals are creating drag which is our worst enemy.
Shielded bearings have metal shields that are non contact. These will allow the bearing to spin as free as possible but at the same time its doing nothing in particular to protect the internals of the bearing. It really acts as a dust cover.
In this type of application shielded bearings should work fine with a drop or two of oil on them regularly. As stated before too much oil will attract dirt.
Keep in mind, oil is thinner and will allow a freer spinning bearing but dissipates much quicker. A grease in this application would do a great job at keeping the bearings lubed longer and keeping dirt out, just would cause to much drag.
We have a lite weight oil in a syringe which makes it really easy to apply http://www.bocabearings.com/bearing-inv ... tning-Lube
We do have a bearing cleaner as well http://www.bocabearings.com/bearing-inv ... tning-Lube
Bearings are not sexy and people don't want to think about them unless they have too. At the same time they do require some love and care.
Also a ceramic hybrid which we have available as well would be a more maintenance free alternative. Ceramic bearings can be run dry. In an effort to take care of your stuff, keeping them lightly oiled is always recommended for long life. These bearings will run smoother because of the glass like surface of ceramic. They will also help reduce motor running temps because they are virtually friction less. As asked earlier ceramic does weigh less but with a bearing this small you probably wouldn't really notice the difference. Orange seal ceramic hybrids
I also have non contact rubber sealed ceramics. Best of both worlds. No added drag but still keeps lube in and dirt out.