Caged Machined Needle Roller Bearing RNA4972, 400 mm I.D. x 480 mm O.D. x 118 mm Width, High Carbon Steel, Oil Hole, Single-Row Open Type, RNA49 Metric Series, High Load Capacity

Caged machined needle roller bearing RNA4972 (single)
✔️ 400 mm (15.75 in) x 480 mm (18.90 in) x 118 mm (4.65 in), single-row

This is a machined type caged needle roller bearing sold as a single bearing unit for heavy radial-load applications in gearboxes, pumps, and linear slide units.

✅ Model: RNA4972, RNA49 Metric Series, open type
✅ Material: High carbon steel, machined cage
✅ I.D.: 400 mm (15.75 in), O.D.: 480 mm (18.90 in)
✅ Width: 118 mm (4.65 in); single-row, caged
✅ Dynamic load capacity: 1,260,000 N; static load: 3,200,000 N
✅ Max speed: 600 rpm; enclosure: open; with oil holes for lubrication
✅ Rows: 1; weight: 85.14 lb (38.63 kg); SKU: 864072
✅ Typical applications: gearbox shafts, pump drives, linear slide unit bearings; consider sealed ball bearing or ceramic alternatives for different needs

💡 What is a caged needle roller bearing used for in heavy-duty linear slide units? Short answer: It gives compact, high-capacity radial support where space is limited. - Ideal when you need high radial load capacity in tight radial space for linear slide unit setups. - Caged machined types run well at moderate speeds and let you service lubrication through oil holes. - Compare with sealed ball bearing or ceramic options when you want lower friction or contamination protection.