Single Caged Roller Bearing NAU4904 20 x 37 x 17 mm IDxODxW Double-Row Heavy-Carbon Steel Outer-Ring Oil Holes Open Metric Series Superior Load Capacity

Single caged roller bearing NAU4904, 20 x 37 x 17 mm
✔️ Double-row open type, high-carbon steel, outer-ring oil holes

This single caged roller bearing is a double-row, open-type unit built for heavy-duty radial loads and linear slide unit setups. It fits industrial shafts where oiling access and high load capacity are required.

✅ 20 mm inside diameter (ID), 37 mm outside diameter (OD), 17 mm width
✅ Heavy-carbon steel construction, open enclosure, outer ring oil holes for lubrication
✅ Dynamic load capacity 10700 N, static load capacity 11300 N, two rows
✅ Max speed 16000 rpm, temperature range -20 to 120 °C, metric NAU series

💡 What is a caged roller bearing used for in heavy duty linear slide units?

These bearings are handy for supporting high radial loads and guiding motion in machinery.

- Ideal for heavy-duty shafts, conveyor rollers, and linear slide unit rails that need robust radial support and low friction.
- Compared to a sealed ball bearing or ceramic option, caged roller bearings handle higher loads and offer easier lubrication access.
- Choose open double-row caged types when outer-ring oil holes and periodic greasing improve service life and reliability.