Single inner ring for shell-type needle roller bearing, tapered bore, metric 55 mm ID x 65 mm OD x 50.5 mm width, high carbon steel inner race, fits TAW6550Z, model IRT5550, for linear slide unit

Single inner ring for shell-type tapered bore needle bearing
✔️ 55 mm ID x 65 mm OD x 50.5 mm width, high carbon steel

This single inner ring is an inner race for shell-type needle roller bearings, typically used in linear slide units, gearboxes, and compact transmissions where a tapered bore seating is required.

✅ Model: IRT5550 (Metric IRT series)
✅ Inside diameter (ID): 55 mm
✅ Outside diameter (OD): 65 mm
✅ Width: 50.5 mm
✅ Material: High carbon steel
✅ Bore type: Tapered (for tapered seating)
✅ Oil hole: No oil hole present
✅ Fits shell type: To assemble with TAW6550Z
✅ Pack size: Single inner ring, sold each
✅ SKU: 862484 - Weight: 0.800 lb

💡 What is a tapered bore inner ring used for in shell-type needle roller bearings? A tapered bore inner ring provides a precise inner race for needle rollers, helping ensure correct seating and load transfer in shell-type assemblies. - Helps align needle roller bearing inner race on tapered shafts or adapter sleeves for accurate contact and reduced slippage - Commonly used in linear slide unit setups, compact gearboxes, and transmission housings where space and radial load capacity matter - Often chosen over sealed ball bearing options when higher radial load support in a compact shell-type assembly is needed