SR188-2RS ABEC-7 Si3N4 高精度Stainless Steel 1/4インチx x inch

SR188-2RS ABEC-7 Ceramic Free Spin Fidget Ball Bearing
✔️ High precision stainless steel bearing with Si3N4 ceramic balls

This is a single SR188-2RS free spin ball bearing built for ultra-smooth rotation in fidget spinners, precision tools, and high-speed hobby or performance setups. It uses stainless steel races with silicon nitride ceramic balls and a high internal clearance feel that helps it spin fast and clean. Pack size is one bearing.

✅ Bearing type deep groove ball bearing
✅ Bearing number SR188-2RS
✅ Inner diameter 1/4 inch
✅ Outer diameter 1/2 inch
✅ Width 3/16 inch
✅ Precision grade ABEC-7
✅ Ceramic balls made from silicon nitride Si3N4
✅ Stainless steel rings for corrosion resistance
✅ Rubber seals to keep dust out
✅ Free spin setup for low drag rotation
✅ Dynamic load rating 108.2 KGF
✅ Static load rating 44.2 KGF
✅ Quantity one bearing

Dimensions
Inner Diameter 1/4 inch
Outer Diameter 1/2 inch
Width 3/16 inch

💡 Why are ABEC-7 ceramic ball bearings used for free spin and high speed applications?
ABEC-7 bearings are chosen when smoothness accuracy and speed matter more than anything else.

• Tighter ABEC-7 tolerances reduce vibration and rolling resistance

• Silicon nitride ceramic balls spin lighter and faster than steel

• Stainless steel races improve durability and corrosion resistance

• Free spin setup delivers longer spin time and cleaner rotation

This bearing is a handy pick when you want ultra-smooth spin, fast response, and premium precision that you can feel the moment it starts rolling.