IRT4030 Inner Ring Single bearing, metric tapered race for shell-type needle roller bearing, 40 mm ID x 45 mm OD x 30.5 mm width, high carbon steel, fits TA4530Z

Single IRT4030 inner ring for shell-type needle bearings
✔️ 40 mm ID x 45 mm OD x 30.5 mm width, metric, fits TA4530Z

This single IRT4030 inner ring is a tapered metric race made from high carbon steel for shell-type needle roller bearings. Typical uses include linear slide units, compact gearboxes, and machinery where the shaft isn't hardened to bearing tolerance.

✅ Model: IRT4030 (Metric IRT Series)
✅ Bore type: Tapered inner race
✅ Dimensions: 40 mm ID x 45 mm OD x 30.5 mm width
✅ Material: High carbon steel inner ring for needle roller bearings
✅ Fits: Assembles with TA4530Z shell-type needle roller bearing
✅ Pack: Single bearing inner ring, sold individually
✅ Weight & SKU: 0.170 lb, SKU 861757

💡 What is a needle roller inner ring used for in shell-type bearings and linear slide units? A needle roller inner ring provides a hardened, precise raceway so rollers run smoothly and handle loads better. Short answer and why it matters: - Keeps rollers aligned and reduces wear when shafts are soft or not ground to bearing tolerances. - Improves load capacity and life in shell-type needle bearings and compact linear slide units. - Lets you replace the inner race easily without machining the shaft, handy for maintenance and upgrades.