Single machined needle roller bearing NA4860 inner ring, 300 mm ID x 380 mm OD x 80 mm width, high carbon steel caged design with oil holes for heavy-duty shafts NA48 metric series

Single machined needle bearing NA4860, 300 x 380 x 80 mm
✔️ 300 mm ID, 380 mm OD, 80 mm width; high carbon steel, oil holes

This is a single machined-type needle roller bearing with inner ring, built for heavy shafts and industrial carriers. It’s commonly used in gearboxes, conveyors, motor drives, and linear slide unit setups.

✅ Model: NA4860, NA48 metric series
✅ Inner diameter (I.D.): 300 mm
✅ Outer diameter (O.D.): 380 mm
✅ Width: 80 mm
✅ Material: high carbon steel, caged machined type
✅ Dynamic load capacity: 610000 N; Static load capacity: 1900000 N
✅ Max speed: 900 rpm; Open enclosure with oil holes for relubrication
✅ Sold as a single bearing, weight ~1.000 lb each

💡 What is a needle roller bearing used for in heavy machinery and linear slide units? Needle roller bearings provide compact, high-capacity radial support where space is limited and precise shaft guidance is needed. - Ideal for shafts, gearboxes, and conveyor drives where a low-profile bearing beats a sealed ball bearing in tight fitments. - Often chosen over ceramic options when high load capacity and oil-relubrication are required in industrial applications. - Handy for linear slide unit assemblies and motor housings that need caged machined bearings with oil holes for maintenance.