Inner Ring for Shell-Type Needle Roller Bearing, Metric IRT1517, 15 mm ID x 18 mm OD x 17.5 mm Width, High Carbon Steel, Fits TA1817Z, Precision Replacement Part

Single inner ring for shell-type needle roller bearing
✔️ 15 mm ID x 18 mm OD x 17.5 mm W, high carbon steel, fits TA1817Z

This is a single replacement inner ring used with shell-type needle roller bearings, ideal for machines, gearboxes, and linear slide units where a hardened running surface is needed.

✅ Model: IRT1517, Metric IRT series
✅ Dimensions: 15 mm ID x 18 mm OD x 17.5 mm width
✅ Material: high carbon steel, tapered bore, no oil hole
✅ Fits shell-type needle roller TA1817Z; single piece replacement
✅ Use cases: machinery repair, transmission assemblies, linear slide unit maintenance

💡 What is an inner ring for a shell-type needle roller bearing used for? An inner ring provides the hardened raceway and correct geometry for rollers to run smoothly. - Supports radial loads in needle roller bearings and keeps alignment in shafts and gearboxes. - Commonly used in linear slide unit repairs, sealed ball bearing conversions, and compact transmission work. - Select matching inner ring size (15 mm ID x 18 mm OD x 17.5 mm) to pair with shells like TA1817Z for proper assembly.