Machined Caged Needle Roller RNA49/32, 40 mm ID x 52 mm OD x 20 mm Width, High Carbon Steel, With Oil Hole, Single-Row Metric Bearing for Linear Slide Units and Motors

Single bearing: machined caged needle roller 40×52×20 mm
✔️ 40 mm ID x 52 mm OD x 20 mm width, high carbon steel, oil hole

This machined caged needle roller bearing is a single-unit, open enclosure component ideal for compact radial load support in linear slide units, gearboxes, and motor assemblies.

✅ Model: RNA49/32 metric series
✅ Material: High carbon steel, machined cage
✅ Inside diameter: 40 mm; Outside diameter: 52 mm
✅ Width: 20 mm; Single-row, open enclosure
✅ Dynamic load capacity: 31,200 N; Static: 47,800 N
✅ Max speed: 10,000 rpm; Oil holes for lubrication
✅ Typical weight: 0.210 lb; Pack: single bearing (each)

💡 What is a needle roller bearing used for in linear slide units and compact motor assemblies? Needle roller bearings give high radial load capacity in tight radial spaces and are handy when you need slim, high-capacity support. Short intro: Ideal when space is limited and load demands are high. - High radial load support for linear slide units, actuator shafts, and conveyors. - Compact solution for motors, gearboxes, and precision linkages where sealed ball bearing size is too large. - Good alternative to sealed ball bearings or ceramic options in tight housings; pairs well with linear slide unit rails.