Single machined needle roller bearing NA4838 inner ring included, 190 mm ID x 240 mm OD x 50 mm W, high carbon steel caged type with oil holes for heavy-duty NA48 metric and linear slide applications

Single machined NA4838 needle roller bearing, 190x240x50 mm
✔️ 190 mm ID x 240 mm OD x 50 mm W, high carbon steel, oil holes

This listing is for one single machined needle roller bearing NA4838 with inner ring. Commonly used in industrial gearboxes, transmission assemblies, and linear slide unit setups where compact radial support is needed.

✅ Model: NA4838 (NA48 metric series)
✅ Inner diameter: 190 mm; Outer diameter: 240 mm; Width: 50 mm
✅ Material: High carbon steel, caged machined type, open enclosure
✅ Features: Oil holes for lubrication, inner ring included for easy installation
✅ Load ratings: Dynamic 249000 N, Static 726000 N
✅ Max speed: 1800 rpm; weight ≈ 1.0 lb; single bearing pack for maintenance or retrofit

💡 What is a needle roller bearing used for in linear slide units and gearboxes? Needle roller bearings supply high radial load capacity in a compact profile, making them handy when space is tight and heavy loads are present. Quick overview: - Ideal for tight radial spaces in linear slide unit and gearbox applications, often replacing larger sealed ball bearing parts. - Boosts load capacity in transmissions and industrial gearboxes while keeping a slim cross-section for compact assemblies. - Works with inner-ring housings and pillow block adapters; maintenance-friendly thanks to oil-hole lubrication and caged machined design.