Inner Ring for Needle Roller Bearing, Metric 40 mm ID x 45 mm OD x 30.5 mm Width, High-Carbon Steel Race to Assemble with GTR455930, Single Unit, General Purpose

Metric inner ring 40 mm ID x 45 mm OD, single unit
✔️ 40 mm ID, 45 mm OD, 30.5 mm width, high carbon steel

This single metric inner ring is an inner race for needle roller bearing assemblies and linear slide unit applications, used in general machinery and equipment where a machined inner race is required. It pairs with GTR455930 to form a complete needle roller bearing set.

✅ Model: LRTZ404530 (LRTZ Metric series)
✅ Bore type: chamfered bore, machined inner race
✅ Dimensions: 40 mm ID, 45 mm OD, 30.5 mm width
✅ Material: high carbon steel; suitable to assemble with GTR455930
✅ Pack: single bearing; weight 0.170 lb; SKU 861877

💡 What is an inner ring used for in needle roller bearing assemblies? A short answer: the inner ring gives rollers a hardened, precise running surface to keep motion smooth and accurate. - Provides a hardened raceway for needle rollers to reduce wear and extend service life. - Keeps roller alignment in linear slide unit and high-load needle configurations for reliable performance. - Works as the matched inner race for assemblies that may pair with sealed ball bearing or ceramic options when systems call for hybrid solutions.