IRT1720 Inner Ring for Shell-Type Needle Roller Bearing, Metric 17 mm ID x 20 mm OD x 20.5 mm Width, High Carbon Steel Inner Race to Assemble with TA2020Z, TLA2020Z and YT202820, Single Unit

IRT1720 metric inner ring, 17 mm ID x 20 mm OD
✔️ 20.5 mm width, shell-type needle bearing inner race, single unit

This inner ring is a metric inner race for shell-type needle roller bearings, made from high carbon steel for dependable radial support in compact assemblies. Ideal as a single replacement part for linear slide units, gearboxes, and industrial housings.

✅ Model: IRT1720, Metric series
✅ Dimensions: 17 mm ID, 20 mm OD, 20.5 mm width
✅ Material: High carbon steel inner race for shell-type needle roller bearing
✅ Compatible with TA2020Z, TLA2020Z, YT202820 shell housings (needle roller application)
✅ Pack: single inner ring, approx. 0.03 lb each, fits tight assemblies and slide units

💡 What is an inner ring for a needle roller bearing used for in a linear slide unit? Short answer: It provides a hardened raceway so needle rollers carry radial loads reliably in tight spaces. - Provides a precise running surface for needle rollers in shell-type bearings and linear slide units. - Acts as an easy-to-replace part when sealed ball bearing or ceramic options are not suitable for the application. - Helps simplify assembly with housings like TA2020Z, TLA2020Z and YT202820 while improving wear resistance.