NAS5008ZZNR Roller Bearing for Sheaves, Single Heavy Duty Unit, 40 mm ID x 68 mm OD x 37 mm Width, Dual-Row Shielded with Oil Hole, High-Carbon Steel, 2500 rpm, 116000 N
✔️ 40 mm ID x 68 mm OD x 37 mm W; dual-row; oil hole; 79500 N
This single dual-row roller bearing is designed for sheaves, pulleys and conveyor rollers in industrial and material-handling gear, offering high static capacity and reliable rotation.
✅ Part no NAS5008ZZNR; single bearing, dual-row, shielded (ZZNR)✅ Material: high carbon steel; weight ~1.21 lb; type: heavy duty uncaged
✅ Dimensions: 40 mm ID x 68 mm OD x 37 mm width
✅ Load capacity: dynamic 79,500 N; static 116,000 N
✅ Speed & temp: max 2,500 rpm; -20 to 120 deg C rating
✅ Features: oil holes for lubrication; suited for sheave and pulley service
✅ Notes: not a sealed ball bearing; consider sealed or ceramic alternatives if needed
✅ Applications: fits conveyor rollers, drive sheaves and linear slide unit assemblies
💡 What is a roller bearing for sheaves used for in pulley and sheave systems? A roller bearing for sheaves supports rotating shafts under heavy radial loads and reduces friction so pulleys and sheaves run smoothly. Short answer: it keeps pulley systems turning reliably under load. - Supports heavy radial loads in sheaves, pulleys, conveyor rollers and winch drums - Offers high static capacity where a sealed ball bearing or ceramic option might be chosen for specific environments - Common in setups alongside linear slide unit guides, pillow block bearings and drive trains