IKO (Nippon Thompson)

Bearing

RNAST40R

Needle roller bearing (IKO), 40mm bore

From ~$55.64at Zoro

Zoro·Amazon

$55.64 part + $2.78 service fee · Supplied by Zoro

Specifications

Bore (d)40.000 mm
Outer Diameter (D)420.000 mm
Width (B)80.000 mm
Seal TypeOpen
Bearing TypeNeedle Roller
Dynamic Load (C)
Static Load (C₀)
Speed — Grease12,500 RPM
Speed — Oil16,750 RPM
Temperature Range-30°C to 120°C
Rows1
ClearanceCN/Normal

Need help finding the right bearing?

Ask BearingBrain →

Need expert help with bearing selection, failure analysis, or application engineering?

Talk to a bearing engineer →

© 2026 BearingBrainMade by Adam