ZrO2 Si3n4 Full Ceramic Bearing With PTFE Based Grease, Model 6904-2RS, 20mm Bore, 37mm Outer Diameter, 9mm Width, High-Performance Ceramic Bearing for Industrial Machinery, Low Friction, High Durability, Corrosion Resistant

Single bearing: Ceramic 6904-2RS with Zirconia/Si3N4 PTFE
✔️ 20x37x9 mm ceramic bearing with PTFE grease, shielded seal

This 6904-2RS is a full ceramic ball bearing built with Si3N4 ceramic balls and ZrO2 ceramic races, designed for high-temperature, low-friction operation. It's ideal in precision machinery, robotics, lab equipment, and high-speed assemblies.

✅ Inner diameter 20 mm, outer diameter 37 mm, width 9 mm
✅ Ceramic balls Si3N4; races ZrO2
✅ Lubrication PTFE based grease, wide temp -50 to 150 C
✅ Sealed 2RS design guards against dust and moisture

💡 What is a full ceramic bearing used for in precision equipment?
- Handy in high-speed, low-noise applications
- Ceramic components reduce wear and heat buildup
- PTFE grease provides stable lubrication across -50 to 150 C
- Sealed design keeps out dust and moisture