NAS5011ZZNR Single Heavy-Duty Roller Bearing for Sheaves and Pulleys, 55 mm ID x 90 mm OD x 45 mm Width, High-Carbon Steel, Oil Hole Shielded, 2-Row NAS Metric Series, 1800 rpm Uncaged

Single NAS5011ZZNR sheave roller bearing, 55x90x45 mm
✔️ High-carbon steel, 2-row, shielded with oil hole, 1800 rpm

This single heavy-duty roller bearing is made for sheaves, pulleys and industrial pulley systems, handy for cranes, hoists, conveyors and material handling gear. It ships as one bearing per unit.

✅ Model: NAS5011ZZNR, NAS Metric Series, heavy-duty uncaged design
✅ Inner diameter: 55 mm, outer diameter: 90 mm, width: 45 mm
✅ Material: high-carbon steel with oil hole and shielded protection
✅ Load ratings: dynamic 118000 N, static 193000 N; max speed 1800 rpm
✅ Temp range: -20 to 120 deg C; 2-row configuration; weight ~2.53 lb

💡 What is a heavy-duty roller bearing for sheaves used for in pulley and hoist systems? They keep sheaves and pulleys rolling smoothly under heavy radial loads and are handy for lifting and conveying tasks. - Reduce friction and wear in pulley assemblies, improving uptime and service life while complementing sealed ball bearing choices - Handle high radial loads where ceramic or sealed options may be chosen for corrosion resistance or low-friction needs - Commonly found in cranes, hoists, conveyors, pulley blocks and linear slide unit setups needing rugged support