S6903-2RS Ceramic Bearing Si3N4 Premium ABEC-7 17x30x7mm

S6903-2RS Hybrid Ceramic Ball Bearing✔️ ABEC-7 Precision - 17mm x 30mm x 7mm, Si₃N₄ Ceramic Balls The S6903-2RS is a high-performance hybrid ceramic bearing built for smooth, high-speed performance. Featuring stainless steel rings and cage with Si₃N₄ ceramic balls, this bearing runs cooler and faster with less friction. Double rubber seals keep contaminants out and grease in. Premium ABEC-7 quality, sold as one bearing. ✅ Inner Diameter: 17mm✅ Outer Diameter: 30mm✅ Width: 7mm✅ Material: Stainless steel rings and cage✅ Balls: Silicon Nitride (Si₃N₄) ceramic✅ Radial clearance: C0✅ Double rubber sealed (RS/2RS1 type)✅ Pre-lubricated with SRL grease✅ Precision rating: ABEC-7 EMQ standard✅ Quantity: 1 bearing Equivalents:☑️ 6903-2RS1☑️ SS61903-2RS1 P4☑️ SS61903RS1☑️ 6903-2RZ 💡 What are the advantages of Si₃N₄ ceramic hybrid ball bearings?They’re designed for top-end performance and efficiency. Ceramic balls are lighter and harder than steel Lower friction for higher RPM and less heat bu