Inner Ring IRT1512 for Shell-Type Needle Roller Bearings, Metric 15 mm ID x 18 mm OD x 12.5 mm Width, High-Carbon Steel Precision Race Fits TLA1812Z, Single Unit, ideal for linear slide unit and sealed ball bearing applications

Single Metric Inner Ring IRT1512, 15x18x12.5 mm
✔️ High carbon steel; fits TLA1812Z; 15 mm ID, 18 mm OD, 12.5 mm W

This single metric inner ring (IRT1512) is an inner race for shell-type needle roller bearing assemblies, commonly used in linear slide units, small gearboxes, and sealed ball bearing setups.

✅ Model: IRT1512 (Metric Series)
✅ Bore type: tapered bore for precision fit
✅ Dimensions: 15 mm ID × 18 mm OD × 12.5 mm width
✅ Material: high carbon steel for durability and wear resistance
✅ Application: shell-type needle roller bearings; pairs with TLA1812Z
✅ Pack: single bearing inner ring; weight approx 0.020 lb

💡 What is an inner ring used for in shell-type needle roller bearing assemblies? An inner ring provides the raceway and support for needle rollers in a bearing setup. - It defines the rolling surface so needle rollers run smoothly and maintain alignment. - It helps the bearing handle radial loads in compact assemblies like linear slide units. - It pairs with shells or cages in sealed ball bearing or needle roller systems for reliable performance.