NAS5020UUNR single sealed roller bearing for sheaves and pulleys, 100 mm I.D. x 150 mm O.D. x 66 mm W, high carbon steel inner ring with oil holes, double-row heavy duty metric series, uncaged

NAS5020UUNR single sealed roller bearing, 100 x 150 x 66 mm
✔️ 100 mm I.D. x 150 mm O.D. x 66 mm W, sealed, inner ring oil holes

This single sealed double-row roller bearing is designed for sheaves, pulleys, winches and crane gear. It delivers heavy-duty support where low maintenance and long service life are needed in linear slide unit and pulley systems.

✅ Model: NAS5020UUNR, NAS Metric Series
✅ Type: Double-row sealed roller bearing, heavy duty, uncaged inner rings
✅ Material: High carbon steel; inner ring with oil holes for re-lubrication
✅ Dimensions: 100 mm I.D. x 150 mm O.D. x 66 mm W
✅ Load ratings: Dynamic 318000 N; Static 584000 N
✅ Max speed and temp: 1000 rpm; -20 to 120 deg C
✅ Enclosure & pack: With seals; sold as a single bearing (each); weight 8.910 lb
✅ Compatibility: Works with sealed ball bearing alternatives; ceramic upgrade paths available

💡 What is a sealed roller bearing used for in heavy-duty sheave, pulley, and winch systems? A sealed roller bearing keeps contaminants out and lubrication in, making it a handy choice for rotating parts that face heavy load and limited maintenance access. Short intro: - Extends service life by keeping grease sealed and debris out, ideal for sheaves and pulleys. - Cuts maintenance cycles on cranes, winches and linear slide unit setups by reducing relubrication needs. - Provides high load capacity for heavy-duty pulley applications; sealed ball bearing or ceramic options can be considered for specific performance upgrades.