Inner Ring IRT4520 Metric Needle Roller Bearing 45 mm ID x 50 mm OD x 20.5 mm Width Shell-Type High Carbon Steel Fits TA5020Z and TLA5020Z Single Unit for Precision Machinery and Linear Slide Units

Metric inner ring IRT4520 for needle roller bearings
✔️ 45 mm ID x 50 mm OD x 20.5 mm W, high carbon steel, single unit

This is a single IRT4520 inner ring for shell-type needle roller bearing assemblies, used in linear slide units, precision machinery, and sealed ball bearing replacements.

✅ Model: IRT4520, Metric IRT series
✅ Bore: tapered (tapered bore type), fits shell-type housings
✅ Dimensions: 45 mm ID, 50 mm OD, 20.5 mm width
✅ Material: high carbon steel for durable inner race performance
✅ Compatible with TA5020Z and TLA5020Z assemblies
✅ Ideal for linear slide unit and sealed ball bearing replacement tasks

💡 What is an inner ring used for in shell-type needle roller bearings and linear slide units? It provides the hardened raceway surface the rollers need to run smoothly and carry radial loads reliably. Here's why it can be handy: - Provides a hardened running surface for needle roller bearings and sealed ball bearing setups, improving wear resistance and service life - Ensures accurate fit in shell-type housings and linear slide units, including tapered bore applications for precise alignment - Offers a cost-effective inner race option when repairing or replacing components in precision machinery and linear guide systems