NAS5018UUNR Sheave Bearing, Heavy-Duty Uncaged Double-Row Sealed Unit for Pulleys and Hoists, 90 mm ID x 140 mm OD x 66 mm Width, High Carbon Steel, Inner Ring with Oil Holes
✔️ 90 mm ID × 140 mm OD × 66 mm W, high carbon steel, sealed, single unit
This single sealed double-row roller bearing is made for sheaves, pulleys, conveyors and hoists where heavy radial loads and low-maintenance sealing are needed.
✅ Model: NAS5018UUNR, NAS Metric Series, heavy-duty uncaged double-row✅ Inner diameter: 90 mm; Outer diameter: 140 mm; Width: 66 mm
✅ Material: High carbon steel; inner ring with oil holes; with seals
✅ Dynamic load capacity: 304000 N; Static load capacity: 540000 N
✅ Maximum speed: 1100 rpm; Temperature range: -20 to 120 deg C
✅ Two rows, uncaged heavy-duty design; weight: 8.140 lb; pack: 1 bearing
✅ Ideal for pulley systems, sheaves, conveyor rollers and linear slide unit set-ups
💡 What is a sealed roller bearing for sheaves used for in pulley and hoist systems? Sealed roller bearings support rotating sheaves and keep lubrication in while keeping grit and moisture out, so they’re handy for pulleys and hoists. Here’s why they help: - Reduces maintenance compared to open bearings by keeping grease sealed and blocking contaminants - Handles heavy radial loads typical of sheaves and conveyor pulleys and pairs well with linear slide unit arrangements - Sealed ball bearing or ceramic hybrid alternatives can be considered when higher speed or corrosion resistance is required