Needle roller bearing inner ring IRT series single piece, tapered 12 mm bore, 16 mm outer diameter, 22.5 mm width, high carbon steel race, metric IRT1222-1 fits TLA1622Z shell

Single needle roller bearing inner ring, IRT series metric
✔️ Tapered 12 mm bore, 16 mm OD, 22.5 mm width, high carbon

This single-piece inner ring (inner race) is a hardened high-carbon steel component made for needle roller bearings, used in compact radial assemblies like automotive parts, power tools, and industrial gearboxes.

✅ Part: IRT1222-1, single piece, pack of 1
✅ Bore type: tapered I.D. 12 mm (metric)
✅ Outer diameter: 16 mm, overall width: 22.5 mm
✅ Material: high carbon steel inner race for durability
✅ Fits shell type TLA1622Z and many compact assemblies
✅ Ideal for precision needle roller inner ring replacement and linear slide unit setups

💡 What is an inner ring used for in needle roller bearing applications? An inner ring provides the precise running surface and axial location for rollers to spin smoothly under load. - Best for needle roller bearing inner ring replacement and ensuring roller alignment. - Helps improve performance in linear slide unit and compact gearbox installations. - Compatible with sealed ball bearing housings or open shells like TLA1622Z for reliable operation.