Single inner ring IRB168-1 needle roller bearing tapered 1 in (25.4 mm) I.D., 1-5/16 in (33.34 mm) O.D., 13.08 mm (0.515 in) width, high carbon steel, fits BA218Z shell, inch series replacement for linear slide units

Single inner ring needle bearing IRB168-1, inch series
✔️ Tapered 1 in (25.4 mm) I.D.; 1-5/16 in (33.34 mm) O.D.; 13.08 mm width

This single inner ring is a tapered I.D. race for needle roller bearings that mates with BA218Z shell type, used in linear slide units, gearboxes, and industrial machinery.

✅ Bore: 1 in (25.4 mm)
✅ Outer diameter: 1-5/16 in (33.34 mm)
✅ Width: 13.08 mm (0.515 in)
✅ Material: High carbon steel (heat-treated)
✅ Series: IRB inch series, fits BA218Z shell type
✅ Pack: single bearing, each; weight approx 0.08 lb (36 g)
✅ Ideal for needle roller assemblies, linear slide unit repairs, sealed ball bearing alternatives

💡 What is an inner ring for a needle roller bearing used for in linear slide units and general machinery? It provides a hardened raceway and precise fit for rollers to maintain alignment under load. - Provides a hardened raceway for needle rollers and reduces wear in bearings used on shafts and housings. - Ensures proper fit and alignment in linear slide units, transmissions, and gearboxes for smooth motion. - Handy for replacing worn inner races when servicing sealed ball bearing setups or upgrading to ceramic options.