Inner Ring LRT400450140, Metric 400 mm ID x 450 mm OD x 140 mm Width, High Carbon Steel, Tapered Bore, For RNA4980 Needle Roller Assembly, for precision linear slide units

Inner ring LRT400450140, 400 x 450 x 140 mm metric
✔️ Single bearing, tapered bore, high carbon steel, fits RNA4980

This precision inner ring is a machined race used with needle roller bearings in industrial gearboxes, linear slide units, and automation equipment. Sold as one single bearing for replacement or assembly.

✅ Model: LRT400450140 (Metric Series)
✅ Inside diameter: 400 mm
✅ Outside diameter: 450 mm
✅ Width: 140 mm
✅ Bore type: Tapered (machined for RNA4980)
✅ Material: High carbon steel; suitable for sealed ball bearing setups
✅ Weight: 78.320 lb; SKU: 864036; Unit: each

💡 What is an inner ring used for in needle roller bearing assemblies for linear slide units? Inner rings give a hardened, precise race for rollers and help mount bearings in machines. - Provides a precision running surface for needle rollers and supports radial loads. - Makes assembly with cages and RNA-series rollers easier; helps retrofit sealed ball bearing or ceramic options. - Common in linear slide units, gearboxes, conveyors, and automation systems for maintenance and upgrades.