Needle Roller Bearing NA4936 Machined Inner Ring 180 mm ID x 250 mm OD x 69 mm Width, High Carbon Steel with Oil Holes, Caged NA49 Metric Series, Single Bearing

Machined needle roller bearing NA4936, single unit
✔️ ID 180 mm x OD 250 mm x W 69 mm, high carbon steel

This single machined needle roller bearing NA4936 fits heavy-duty radial support roles in gearboxes, pumps and linear slide units where compact, high-capacity bearings are handy.

✅ Model: NA4936, NA49 metric series
✅ Inner ring, machined caged type, open enclosure
✅ ID 180 mm, OD 250 mm, Width 69 mm
✅ Material: high carbon steel; oil holes included
✅ Dynamic load rating 434000 N, static 989000 N
✅ Max speed 1900 rpm; weight approx 0.45 kg (1.0 lb)
✅ Not a sealed ball bearing; ceramic alternatives available

💡 What is a needle roller bearing used for in industrial applications? Needle roller bearings provide strong radial support in tight spaces and are handy for machines that need compact, high-load solutions. Quick intro: - Ideal for compact gearboxes, pumps, and linear slide units needing high radial capacity and low cross-section - Preferred over sealed ball bearing when axial loads are low and space is limited; ceramic options suit high-speed or corrosive setups - Use machined caged inner rings with oil holes for easier lubrication and lower maintenance