Single Inner Ring IRT3540 Metric 35 mm ID x 40 mm OD x 40.5 mm Width Shell-Type High Carbon Steel for TA4040Z Needle Roller Bearing Assembly Replacement Race Precision Component

Single IRT3540 metric inner ring 35 mm ID x 40 mm OD
✔️ 40.5 mm width; high carbon steel; shell type; fits TA4040Z

This single metric inner ring is a replacement inner race for shell-type needle roller bearing assemblies, commonly used in gearboxes, transmissions, and linear slide unit guides where a compact, hardened raceway is needed.

✅ Model: IRT3540 (Metric series)
✅ Bore type: Tapered inner bore for assembly
✅ Inside diameter: 35 mm
✅ Outside diameter: 40 mm
✅ Width: 40.5 mm
✅ Material: High carbon steel, heat treated
✅ Fits: Shell-type needle roller bearing TA4040Z assembly
✅ Pack: single inner ring; replacement component

💡 What is an inner ring used for in needle roller bearings? An inner ring provides a hardened running surface for rollers and maintains alignment and load distribution in compact bearing setups. Quick overview: - Provides a wear-resistant raceway to increase service life and load capacity. - Keeps needle rollers aligned inside shell-type bearings used in linear slide units and gearboxes. - Acts as the mating surface with sealed ball bearing housings or ceramic rollers for high-speed or heavy-load applications.