S61903-2RS1 Hybrid Ceramic ABEC-7 Bearing - Sealed Si3N4 17x30x7mm

S61903-2RS1 Hybrid Ceramic Ball Bearing✔️ ABEC-7 Stainless Steel with Si3N4 Balls, 17x30x7mm This S61903-2RS1 premium hybrid bearing combines stainless steel rings with ultra-smooth Si3N4 ceramic balls for high-speed, low-friction performance. Built to ABEC-7 standards and sealed with rubber on both sides, it's perfect for demanding setups where speed, accuracy, and cleanliness matter. Sold as a single bearing. ✅ Inner diameter (ID): 17mm✅ Outer diameter (OD): 30mm✅ Width: 7mm✅ Material: Stainless steel rings and cage✅ Balls: Silicon nitride (Si3N4) ceramic✅ Closure: Double rubber seals (2RS1)✅ Lubrication: Pre-greased (SRL grease)✅ Clearance: C0✅ Speed limit: 27,600 RPM✅ Pack size: One bearing ☑️ 6903-2RS1☑️ 6903-2RZ☑️ SS61903RS1☑️ SS61903-2RS1 P4 💡 Why choose ABEC-7 hybrid ceramic bearings for high-speed applications?They combine ultra-precise tolerances with smooth ceramic motion for serious performance. ABEC-7 rating ensures tight tolerances and consistent spin Ceramic balls re