Inner Ring for Shell-Type Needle Roller Bearing IRT1520, Metric 15 mm ID x 18 mm OD x 20.5 mm W, High Carbon Steel, Fits TA1820Z, Single Bearing Replacement

Single inner ring for shell-type needle bearing IRT1520
✔️ 15 mm ID x 18 mm OD x 20.5 mm W; high carbon steel; fits TA1820Z

This single IRT1520 inner ring is a metric replacement part for shell-type needle roller bearings, used in linear slide units, automotive gearboxes, and industrial transmissions where compact high-load support is needed.

✅ Model: IRT1520 (Metric IRT series)
✅ Inner diameter: 15 mm; Outer diameter: 18 mm; Width: 20.5 mm
✅ Material: high carbon steel for durable rolling contact performance
✅ Designed to assemble with TA1820Z shell assemblies; sold as one bearing inner ring
✅ Great for linear slide unit refurb, compatible with sealed ball bearing arrangements and ceramic upgrade paths
✅ Weight: 0.030 lb; SKU 861009; ideal for industrial and automotive repair jobs

💡 What is an inner ring for needle roller bearings used for? An inner ring provides the rolling surface and radial support inside a needle roller assembly. This quick intro explains common uses: - Offers a hardened raceway for needle rollers in shell-type bearings, improving wear life and load capacity - Keeps shaft-mounted assemblies running true in linear slide units, transmissions, and motor drives - Works with sealed ball bearing or ceramic upgrade approaches to boost longevity and reduce maintenance