S6004-2RS Bearing Si3N4 Ceramic Sealed 20mm ABEC-5 Bearing
UPC: 00193019052990
Type: Deep Groove Radial Ball Bearing
Cage: Nylon Cage
Balls: Ceramic Si3N4
Radial Clearance: C3
S6004-2RS Sealed Hybrid Ceramic Ball Bearing
✔️ ABEC-5 Precision - Si3N4 Balls & Stainless Steel - 20x42x12mm
This S6004-2RS is a premium hybrid ceramic deep groove bearing built for speed and durability. It features high-precision ABEC-5 tolerances, stainless steel races, Si3N4 ceramic balls, and a tough nylon cage. Perfect for electric motors, 3D printers, and performance gear that demands quiet, smooth, long-lasting rotation.
✅ ABEC-5 precision for smooth, accurate high-speed rotation
✅ Si3N4 solid ceramic balls - lightweight, tough, and heat-resistant
✅ Stainless steel races for corrosion protection
✅ C3 clearance handles thermal expansion at high RPMs
✅ Nylon cage for reduced friction and wear
✅ Double rubber seals block out dust and moisture
✅ Lubed with SRL grease - no maintenance needed
✅ Size: 20mm x 42mm x 12mm
✅ Sold as: 1 Bearing
Dimensions Table (mm):
| Inner Diameter | Outer Diameter | Width | Clearance | Cage Material |
|---|---|---|---|---|
| 20 mm | 42 mm | 12 mm | C3 | Nylon |
💡 Why use a hybrid ceramic bearing with Si3N4 balls in high-speed equipment?
Because they outperform steel bearings where it counts:
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Si3N4 balls are 60% lighter and harder than steel - less friction, more speed
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Hybrid ceramic bearings resist wear, heat, and corrosion
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Nylon cage and C3 clearance = quiet, high-RPM stability
If you're chasing smooth, low-noise, high-RPM performance - this is your bearing. Grab one now and let your machine glide like butter!