LRT505540 Inner Ring, Metric Tapered Bore 50 mm ID x 55 mm OD x 40 mm Width, High Carbon Steel inner race for needle roller bearings, fits RNAFW556840, single bearing replacement

Single LRT505540 inner ring, metric 50 mm ID x 55 mm OD
✔️ Metric tapered bore 50 mm ID, 55 mm OD, 40 mm width, HCS

This is a single metric inner ring (inner race) for needle roller bearing assemblies used in linear slide units, transmissions, and industrial equipment. It provides a precise raceway where compact radial space and accurate motion are needed.

✅ Model: LRT505540 inner ring, Metric LRT series
✅ Bore type: Tapered bore for matched RNAFW556840
✅ Dimensions: 50 mm ID, 55 mm OD, 40 mm width
✅ Material: High carbon steel, machined inner race
✅ For: Needle roller bearings, linear slide unit guides, and compact drives
✅ Pack: Single bearing inner ring, sold as 1 piece

💡 What is an inner ring for a needle roller bearing used for? An inner ring gives needle rollers a hardened, precise raceway so assemblies run truer and last longer. - Improves load capacity and smooth motion in linear slide units and compact roller setups. - Enables needle roller bearings to work alongside sealed ball bearing arrangements or ceramic parts. - Helps with alignment, reduces wear, and extends service life compared with a bare shaft.