LRTZ404823 Metric Inner Ring, 40 mm ID x 48 mm OD x 23 mm W, High carbon steel race for RNA4908UU assembly, machined needle roller bearing part, single unit, general use

Metric inner ring LRTZ404823 for needle roller, single unit
✔️ 40 mm ID x 48 mm OD x 23 mm W, high carbon steel, machined

This machined metric inner ring (model LRTZ404823) is the inner race for needle roller bearing assemblies commonly used in linear slide units, gearboxes, and general mechanical equipment. Sold as a single bearing inner ring.

✅ Model: LRTZ404823, machined inner ring, Metric series
✅ Dimensions: 40 mm ID x 48 mm OD x 23 mm width
✅ Material: High carbon steel, suitable for needle roller bearings
✅ Fits RNA4908UU assemblies; single unit pack
✅ Typical use: linear slide units, housings, and general machinery

💡 What is an inner ring used for in needle roller bearing assemblies and linear slide units? An inner ring provides a hardened, precision raceway that lets needle rollers run smoothly and carry radial loads efficiently. Quick summary: - Provides a precise raceway for needle rollers to improve load distribution and service life. - Keeps shaft fit and concentricity for linear slide units, guides, and compact housings. - Can be considered when upgrading systems with sealed ball bearing options or ceramic elements for higher performance.