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 resist heat and reduce rotational drag

• Rubber seals keep out moisture, dirt, and dust

• Ideal for electric motors, precision machines, and aerospace tools

Looking for ultra-smooth, high-accuracy rotation? This bearing's got your back, grab it now and keep things running clean and fast!