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467 NSK inner rings for needle roller bearings part numbers, each on its own page where you can request a quote. The key series come first, followed by the complete list.
View all NSK bearings part numbers →Inner rings for needle roller bearings, all brands →
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
An NSK FIR series inner ring is the hardened, ground raceway that mounts on a shaft inside a needle roller bearing. It is the right choice when the shaft itself is not hard or ground enough to serve as a running surface. MR Industrial Accessories LLC supplies this series and helps you confirm the code that fits your application.
Example part numbers:FIR-5812-1FIR-5816-1FIR-10158-2FIR-071010FIR-071012
The NSK IR series inner ring serves as the inner raceway in needle roller bearings. It fits onto the shaft and gives the rollers a hard, ground surface to run on, which allows compact bearing arrangements with high load capacity. This ring matters most when the shaft itself lacks the hardness or finish needed to work as a raceway. MR Industrial Accessories supplies this series and helps you match the correct part number to your application.
The manufacturer part number is all we need: we'll quote it and share dimensions and equivalents via WhatsApp or email.
