6909 6909CE Full Ceramic Bearing Si3N4 Material All Silicon Nitride Ceramic Ball Bearings 45 * 68 * 12 mm

<p>1 Properties of full ceramic materials</p><p>Ceramic Bearings, including components made from ceramic, have the special properties that steel bearings do not have, such as being non-magnetic or insulating. They can be used in new applications where conventional bearings have not been practical.</p><p>Ceramic Bearings are highly heat resistant, enabling a rolling bearing to be practical in a high temperature environment. The low density of ceramic decreases the centrifugal force induced by rolling elements (balls or rollers), contributing to an increased speed of the apparatus.</p><p>2 Structure of full ceramic Bearings</p><p>Full ceramic (All-ceramic) bearing of Si3N4 material</p><p>Full ceramic bearing made with Si3N4 have some better performance than ZrO2, the rings and balls made by full ceramic material:Si3N4, as a standard construction, the cage made by PTFE, Compares than the material of ZrO2 ,The SiN4 ceramics bearings could endure heavier load and could be used in higher temperature environment.</p><p>3 Dementions</p><p>Item: 6909CE</p><p>Bore Dia (d): 45 mm</p><p>Outer Dia (D): 68 mm</p><p>Width (B): 12 mm</p><p>Cage Material: PEFT</p><p>Bearing Material: Silicon Nitride</p><p>Dynamic Load Rating (Cr) (N): 9870</p><p>Static Load Rating (Cor) (N): 7581</p><p>Max Speed (X1000 RPM): 17</p><p>Ball Qty: 15</p><p>Weight (g): 102.9</p><p>Widely used in household appliances, garden machinery, outdoor vehicles, industrial production, etc. Suitable for skateboards, longboards, inline skates, scooters, robots, ship rudder axles, etc.</p><p>Features: small friction, fast speed, smooth, low noise.</p>

• Model Number: 6909 Full Ceramic Si3N4; Torque Capacity: 45x68x12mm
• Surface Roughness: Ra 0.05; Structure: PTFE Cage; Coatings: Non-magnetic
• Material: Si3N4 Ceramic; Ball Qty: 15; Weight (g): 102.9
• Bearing Material: Silicon Nitride; Dynamic Load Rating (Cr) (N): 9870
• Static Load Rating (Cor) (N): 7581; Max Speed (X1000 RPM): 17