6801-2RS Hybrid Ceramic Bearing 12x21x5mm Si3N4 Premium ABEC-5 Outer Diameter - 2 9/16 inch (2.5625") With a 4mm bore and

With a 4mm bore and PTFE cage

measures an inner diameter of 45mm

180mm x 320mm x 52mm

🟢 Quality: ABEC-5 precision class

6 mm) inner diameter

6801-2RS Hybrid Ceramic Bearing 12x21x5mm Si3N4 Premium ABEC-5 Outer Diameter - 2 9/16 inch (2.5625") With a 4mm bore andS6801 2RS Hybrid Ceramic Ball Bearing Premium ABEC 5 12mm x 21mm x 5mm Si3N4 Ceramic Balls Stainless Steel Double Sealed The S6801 2RS is a high performance hybrid ceramic deep groove ball bearing designed for smooth, low friction rotation in tight spaces. With a stainless steel outer structure, Si3N4 ceramic balls, and rubber seals on both sides, it's built for high speed, high precision environments like 3D printers, robotics, and race grade