They have stainless steel races outer case and inner ring and ball bearings made from silicon nitride noted as si3n4 or zirconium dioxide noted as zro2.
Best r188 hybrid ceramic bearing.
Coogam r188 hybrid ceramic 10 ball bearing for high end fidget spinner toy diy replacement high speed smooth quiet durable si3n4 silicon nitride black ceramic pack of 2 size r188 3 6 out of 5 stars 50.
Replacement bearings for your r188 fidget spinners and toys.
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Stainless steel or chrome races to prevent rust available with si3n4 ceramic stainless steel or chrome balls uses 10 balls inside the bearing which is the preferred configuration in bearings for high end spinners in the industry 1 4 x 1 2 x 3 16 high.
It gives you a long spin time and more balance.
Generally speaking the r188 bearing is the best choice for fidget spinners if you are looking for the best spin time.
I like them a lot better than the replacement ceramic hybrid bearings that fidget hq sells and both are much smoother and quieter.
The same spinner with a full ceramic 608 bearing has equal results but a little noisy.
Hybrid ceramic bearings best most desirable hybrid ceramic bearings are the best choice for fidget spinners.
A quality hybrid ceramic r188 averages around 3 minutes 15 seconds.
The blackish gray balls are si3n4 and the white balls are zro2.
A 608 bearing is 22mm in diameter whereas the r188 bearing is just 12 7 mm.
The flat ceramic terrapin x is probably my smoothest and longest spinning bearing with the one drop 10 ball bearings being a very close second.
When i remove the 608 bearing from the same spinner and replace it with an r188 bearing using a 608 to r188 adapter i get an improvement.
The r188 hybrid ceramic ball bearings are the perfect high speed replacement bearing for your do it yourself fidget spinner.
For those that enjoy making their own unique fidget spinner the hybrid ceramic ball bearings have steel rings that give you the high quality precision that is matched with.
New batch of rotobow spinners come with r188 hybrid ceramic bearings it features thin profile and longer spin times.
A lot of this has to do with the actual dimensions of the bearings.