Detailed Information

Learn more about your hand spinner

Here’s you will find out about bearings and materials being used, and how we can customize your spinner.
NOTE: Site is under constructions. A lot doesn’t work yet!

Bearings Information
What kind bearings we use and why

Our hand spinners use 4 bearings. Functional central, and decorative outer bearings. All bearings are of 608 type which are mostly know as skate bearings.  Bearings have bearing balls riding inside and usually held up by a metal or nylon cage.
On the outside bearings have rubber seals of various colors (usually black). These seals protect bearing from debris, however in hand spinners, they serve mostly decorative purpose.
Seals can be contact or non contact. Most bearings have contact seals, which slow down rotation very slightly. From the bearings we offer only our premium hybrid ceramic bearings have non-contact seals, which means they don’t affect spin duration.

Central Bearing

Central bearings is the most important one as it’s actually what spins the fidget so let’s learn about this one first. There are total of 3 types that exist.

  • First is chrome steel bearing. It’s a good bearing with low cost. Cleaned from grease or any other lubricant it can spin on average for 30-45 seconds. Nylon cage bearings spin longer than metal cage. Base on availability we always try to install nylon cage based bearings for in the center, however these are not always in stock. If you do require nylon cage steel bearing please let us know in the notes when ordering. We will let you know if they are not in stock.
  • Second is ceramic hybrid bearings. These are more costly than steel bearings because they contain ceramic balls. Outer of the bearing is still metallic, and cage is nylon. There are two types of ceramic material used in these are either Silicone Nitride (Si3N4) or ZrO2 (zirconia). Si3N4 are grey/black in color. We used to offer these as only option for ceramic hybrids.  These can spin for about a minute in our hand spinners.
    Recently we discovered a very high performance (probably best on the market) hybrid ceramic bearings.  When tested they outperformed our regular hybrid ceramics, and shockingly offered practically same exact spin times as super expensive fully ceramic bearings.  They cost more than regular hybrid ceramics, and we call them “premium” hybrid ceramics. So if you want best bearing for your spinner, choose these!
  • Finally there are fully ceramic bearings. These made almost entirely out of ceramic material and very light and fast.  However they are very expensive. We acquired several samples of both Si3N4 and ZrO2 bearings, and tested how long they spin under normal conditions in our spinners. ZrO2 was spinning for 2 minutes, while Si3N4 span just few seconds longer. However we decided not to offer these, as we discovered that “premium” hybrid ceramics are basically identical in spin times, and cost a lot less…

Watch how long each type of bearing spins

Maintenance and Troubleshooting
Caring for your spinner
General maintanance

LD Hand spinners require very little (if any maintenance). From time to time wipe spinner with alcohol swabs or q-tips. Use compressed air to blow any debris accumulated in the bearings. Just don’t use acetone or other harsh chemicals what might dissolve plastic.

Bearing replacement

Bearings are tension fitted in the spinner body, which means they can be pushed out with enough force. However keep in mind, they will become loose if removed and reinserted several times, so please avoid doing that. In fact outer bearings are not even meant to be ever removed under normal circumstances.

In most cases you’ll only want to remove central bearing if you wish to upgrade it or installed into replacement spinner body (if you received one).

If you must remove bearing, please push it from the bottom thru the top of the spinner. Reason is, bottom hole diameter is smaller than the top.
Easiest is to push it out (from the bottom) with finger caps assembly in place. But even when it’s not, you can push it out by applying pressure with both thumbs from the bottom.
ALWAYS hold top layer of the spinners with your fingers as pushing out bearing can tear this glued layer!!!

Please watch this helpful video on how to replace bearings:

It’s easy to crack spinner while removing outer bearings if they held tightly.
Do this only at your own risk!!!

Removing bearing seals

Rubber seals can be easily removed from bearings if needed.  It’s easy to do, but you must be careful not to damage bearing cage or seals themselves.

Please watch a video on how to do this.