Tapered Inner Ring IRT1220-2 Pack of 2, 12 mm ID x 17 mm OD x 20.5 mm, High Carbon Steel Needle Roller Race fits TA1720Z shell, linear slide and sealed housings

Tapered inner ring IRT1220-2, pack of 2, 12 mm ID
✔️ 12 mm ID, 17 mm OD, 20.5 mm width; high carbon steel inner ring

This tapered inner ring is sold as a pack of 2 and fits metric needle roller bearing assemblies. It's commonly used in linear slide units, sealed bearing housings, and TA1720Z shell type setups.

✅ Pack of 2 inner races
✅ Bore type: Tapered; ID 12 mm
✅ Outside diameter 17 mm; width 20.5 mm
✅ Material: High carbon steel; IRT metric series
✅ Fits TA1720Z shell type; for needle roller bearing assemblies
✅ Suitable for linear slide unit and sealed ball bearing housings

💡 What is an inner ring used for in needle roller bearing assemblies? An inner ring gives rollers a hardened raceway and maintains alignment so bearings share load effectively. Short intro: Handy part that sets the rollers' path and helps bearings run longer. - Provides a wear-resistant raceway for rollers and improves load distribution in bearing assemblies. - Supports alignment in linear slide unit and sealed ball bearing setups, reducing friction and heat. - Matches TA1720Z shell type fits and keeps needle roller bearings running smoothly.