Metric Inner Ring LRTZ172214, 17 mm ID x 22 mm OD x 14 mm Width, Single High-Carbon Steel Inner Race for Needle Roller Bearings, Fits RNA4903UU, General Purpose

Metric inner ring LRTZ172214 for needle roller slides
✔️ 17 mm ID x 22 mm OD x 14 mm W, single inner race, RNA4903UU

This machined metric inner ring is the inner race for needle roller bearing assemblies, commonly used in linear slide units, machine guides, and compact gearboxes. It also pairs well with sealed ball bearing or ceramic components in hybrid setups and is meant for general usage with RNA4903UU.

✅ Model LRTZ172214, metric LRTZ series, machined needle race
✅ Inner diameter 17 mm, outer diameter 22 mm, width 14 mm
✅ Material: high carbon steel, oil hole: none, weight ~0.040 lb each
✅ Designed to assemble with RNA4903UU needle roller bearing, single unit pack
✅ Ideal for linear slide unit repairs, machine guides, and compact transmissions

💡 What is an inner ring used for in linear slide units and machine guides? An inner ring provides the precise running surface for needle rollers, helping control radial loads and extend bearing life in compact assemblies. A short intro: Handy when rebuilding or upgrading needle roller bearing units. - Improves rolling contact for needle rollers in linear slide units and guide rails. - Centers radial loads and minimizes wear in machine guides and gearbox applications. - Matches standard sizes like 17 mm ID x 22 mm OD x 14 mm width for easy replacement and assembly.