Tapered inner ring 12 mm I.D. needle roller bearing IRT Metric Series single unit for TA1620Z compatible shell, high carbon steel, 16 mm O.D., 20.5 mm width

Tapered inner ring 12 mm I.D. IRT metric single unit
✔️ High carbon steel, 16 mm O.D., 20.5 mm width, fits TA1620Z shell

This single tapered inner ring is the hardened race for needle roller bearings, commonly used in gearboxes, pumps, motor shafts, and compact linear slide units where tight radial clearance is needed.

✅ Series: IRT Metric Series
✅ Bore (I.D.): 12 mm
✅ Outer diameter (O.D.): 16 mm
✅ Overall width: 20.5 mm
✅ Material:
✅ Fits shell type: TA1620Z compatible
✅ Pack: single inner ring, sold each

💡 What is an inner ring used for in needle roller bearing assemblies? An inner ring provides the hardened raceway that lets needle rollers carry radial loads reliably and reduce wear. - It supports rollers and maintains precise rolling contact in compact designs like linear slide units and gearboxes. - Use a matched shell (for example TA1620Z) for correct fit and longer service life; handy for retrofits and repairs. - For contamination control or higher speed needs, consider sealed ball bearing or ceramic options for improved performance.