Roulement S6903-2RS ABEC-3 - Boules en céramique Si3N4

S6903-2RS Hybrid Ceramic Ball Bearing
✔️ ABEC-3 Precision - 17mm x 30mm x 7mm, Si₃N₄ Ceramic Balls

The S6903-2RS is a premium hybrid ceramic bearing with stainless steel races and cage, plus ultra-smooth Si₃N₄ ceramic balls. With rubber seals on both sides and SRL grease inside, it's designed to spin fast, stay clean, and resist wear. Rated ABEC-3 for dependable accuracy in most high-speed setups. Sold as one bearing.

✅ Inner Diameter: 17mm
✅ Outer Diameter: 30mm
✅ Width: 7mm
✅ Balls: Silicon Nitride (Si₃N₄) ceramic
✅ Rings & Cage: Stainless steel
✅ Sealed both sides with rubber RS/2RS1 seals
✅ Pre-lubed with SRL low-friction grease
✅ Radial Clearance: C0
✅ Precision Rating: ABEC-3
✅ Quantity: 1 bearing

Equivalents:
☑️ 6903-2RS1
☑️ 6903-2RZ
☑️ SS61903-2RS1 P6
☑️ SS61903RS1

💡 When should you choose an ABEC-3 hybrid ceramic bearing?
It’s a smart pick for most hobby and high-speed electric motor uses.

• Offers smooth rotation with less friction than steel-only bearings

• More affordable than higher ABEC grades

• Great for bikes, e-skates, RC motors, and tools

• Handles moisture and contamination better than open types

Looking for speed, reliability, and value in one bearing? This ceramic hybrid hits the sweet spot, grab yours now and keep your gear gliding!