Single NA4908 Machined Needle Roller Bearing, Inner Ring & Oil Hole, 40 mm ID x 62 mm OD x 22 mm Width, High Carbon Steel Caged Type for Linear Slide Unit, ceramic-ready

Single NA4908 machined needle roller bearing
✔️ 40 mm ID x 62 mm OD x 22 mm W, high carbon steel, oil hole

This single NA4908 machined needle roller bearing is an open, caged unit with inner ring, suited for compact shafts, linear slide units and transmissions. Often chosen over a sealed ball bearing; ceramic options exist for specialty builds.

✅ Model NA4908, NA49 Metric Series, caged machined type
✅ Dimensions: 40 mm ID x 62 mm OD x 22 mm width
✅ Material: high carbon steel, inner ring included, with oil holes
✅ Load ratings: dynamic 41,600 N, static 67,400 N
✅ Max speed 8,500 rpm, open enclosure for lubrication
✅ Pack: single bearing, SKU 1912008, approx 1.0 lb each

💡 What is a needle roller bearing used for in linear slide units and compact shafts? Needle roller bearings deliver high radial load capacity in tight spaces and are handy where sealed ball bearings are too bulky. Quick takeaway: - High radial load support for compact shafts and linear slide units - Low cross-section fits slim housings when sealed ball bearings won’t - Common in transmissions, pumps, and light automotive assemblies