NA4904-2RS Needle Roller Bearing 20x37x18mm Machined Type with Inner Ring Double Sealed

NA4904-2RS Needle Roller Bearing 20mm x 37mm x 18mm Pack of 1 with Inner Ring
✔️ Machined Type Double Sealed Needle Bearing Assembly

This pack of 1 NA4904-2RS machined needle roller bearing comes complete with inner ring and dual rubber seals. It’s built for compact radial load setups in gearboxes, transmissions, and industrial equipment where space is tight but load demand is high.

✅ Pack size: 1 complete bearing with inner ring
✅ Model: NA4904-2RS machined needle roller bearing
✅ Bore diameter d: 20mm
✅ Outer diameter D: 37mm
✅ Inner ring width B1: 18mm
✅ Outer ring width B: 17mm
✅ Additional dimension dr: 25mm
✅ Closures: rubber seals on both sides
✅ Dynamic load rating: 1,830 KGF
✅ Static load rating: 2,090 KGF

Dimensions (mm)

d dr D B B1
20 25 37 17 18

💡 Why are machined needle roller bearings with inner rings preferred for high radial load compact shaft applications?
It’s about rigidity, load handling, and shaft protection:

• Machined outer ring increases structural strength

• High needle density boosts radial load capacity

• Hardened inner ring protects softer shafts from wear

• Double seals retain grease and block contamination

If you need serious radial strength in a tight footprint, this NA4904-2RS setup is ready to handle the pressure.