Single NA4901 machined needle roller bearing, caged type with inner ring and oil hole, high carbon steel, 12 mm I.D. x 24 mm O.D. x 13 mm width, NA49 metric series precision shaft support

Single NA4901 machined needle roller bearing 12×24×13 mm
✔️ High carbon steel inner ring with oil hole; caged; 9660 N dyn

This listing is for a single precision caged needle roller bearing (model NA4901). It’s commonly used to support compact shafts in linear slide units, gearboxes, and compact actuators where low profile and high radial load capacity are needed.

✅ Model: NA4901, NA49 Metric Series
✅ Type: Caged machined needle roller with inner ring
✅ I.D.: 12 mm; O.D.: 24 mm; Width: 13 mm
✅ Material: High carbon steel; enclosure: Open; oil hole included
✅ Dynamic load capacity: 9660 N; Static load capacity: 11100 N
✅ Max speed: 25000 rpm; weight: 1.000 lb; SKU: 1911995
✅ Use cases: linear slide unit support, compact shaft bearings, alternative to sealed ball bearing or ceramic options
✅ Pack size: Single bearing, sold each

💡 What is a needle roller bearing used for in compact linear slide units and small shaft supports? Needle roller bearings are handy for delivering high radial load support in tight assemblies. - They save radial space compared with sealed ball bearing designs, fitting tight linear slide unit layouts. - They handle higher radial loads on small-diameter shafts and can be chosen over ceramic or hybrid bearings when steel load capacity is needed. - Common in actuators, gearboxes, and compact pillow block style mounts where stable shaft guidance is required.