Single inner ring IRT1216 for shell-type needle roller, metric 12 mm ID x 15 mm OD x 16.5 mm width, high carbon steel, fits TLA1516Z assemblies, ideal for linear slide unit and sealed ball bearing use

Single IRT1216 inner ring, 12 x 15 x 16.5 mm
✔️ Shell-type inner ring, high carbon steel, 12x15x16.5 mm fits TLA1516Z

This single inner ring is a replacement raceway for shell-type needle roller bearings and is used to assemble TLA1516Z shells in linear slide units, compact gearboxes, and machine tooling.

✅ Model IRT1216, Metric IRT series
✅ Bore type: Tapered bore for shell assemblies
✅ Material: High carbon steel for durability
✅ Dimensions: inside 12 mm, outside 15 mm, width 16.5 mm
✅ Pack: single piece, lightweight 0.020 lb each, fits TLA1516Z

💡 What is an inner ring used for in shell-type needle roller bearing and linear slide unit applications? An inner ring provides the precise rolling raceway and support that lets needle rollers carry radial load and keep shafts aligned. Quick intro: - Stabilizes needle rollers for accurate load distribution in tight assemblies and linear slide unit setups. - Handy in compact gearboxes, indexing heads, and when replacing sealed ball bearing components. - Works well with ceramic upgrades or sealed ball bearing systems to reduce friction and extend service life.