Inner Ring LRTZ556326 for Needle Roller Bearing, Metric 55 mm ID x 63 mm OD x 26 mm Width, High Carbon Steel, General Use for linear slide unit and machinery, Compatible with RNA4911UU, Single Unit
✔️ ID 55 mm, OD 63 mm, Width 26 mm, High carbon steel, fits RNA4911UU
This single inner ring is a machined component for needle roller bearings used in linear slide units, gearboxes, and compact machinery applications where a precise running surface matters.
✅ Inner ring model LRTZ556326, machined fit and finish✅ Inside diameter 55 mm, outer diameter 63 mm, width 26 mm
✅ Material: high carbon steel for wear resistance and load support
✅ Compatible assembly: fits RNA4911UU needle roller bearing series
✅ Single unit pack, ideal for repair jobs and replacements
💡 What is an inner ring used for in needle roller bearings? An inner ring provides the hardened raceway and accurate shaft fit that needle rollers run on, helping bearings handle radial loads and maintain alignment. - Acts as the running surface for needle rollers, improving load capacity and service life. - Keeps precise shaft fit for linear slide unit assemblies, sealed ball bearing swaps, and transmission components. - Handy for maintenance and rebuilds: replace the ring without changing the whole bearing, or pair with ceramic rollers for specialty builds.