Single needle roller inner ring IRB248-1 IRB series replacement, tapered I.D. 1-1/2 in (38.10 mm), O.D. 1-7/8 in (47.63 mm), 13.08 mm width, high carbon steel, fits BA308Z shell assemblies
✔️ High carbon steel, tapered I.D. 1-1/2 in (38.10 mm), W 13.08 mm
This single inner ring (inner race) is made for shell type needle roller bearings like BA308Z and is commonly used in linear slide units, conveyors, and compact machinery where slim radial support matters.
✅ IRB248-1 inner ring, IRB Inch Series, single bearing✅ Bore: tapered I.D. 1-1/2 in (38.10 mm)
✅ Outer diameter: 1-7/8 in (47.63 mm)
✅ Width: 13.08 mm (0.515 in)
✅ Material: high carbon steel, for shell type needle roller bearings
✅ Fits: BA308Z shell type needle roller bearing assemblies; SKU 861224; weight 0.140 lb; pack: single each
💡 What is a needle roller bearing inner ring used for in shell type assemblies? A needle roller bearing inner ring provides a hardened running surface for the rollers and helps the shell assembly take radial loads in tight spaces common to linear slide units and conveyor systems. Quick overview: - Provides a smooth hardened surface for needle rollers to reduce wear and increase load capacity, suited for shell type needle roller bearings - Keeps needle alignment in confined housings like linear slide units, transmissions, and small gearboxes - Lets shell assemblies perform like a compact radial support solution where a sealed ball bearing won't fit