Single machined caged needle roller bearing RNA49/48, 55 mm ID, 70 mm OD, 22 mm W, high carbon steel, oil hole, open metric for linear slide unit, high load, 7500 rpm

Single machined caged needle bearing, 55mm ID
✔️ High carbon steel, open caged RNA49/48, oil hole, 55x70x22 mm

This single bearing is a machined, caged needle roller unit used in tight-space industrial gearboxes, linear slide units, and automotive shafts where compact, high-load performance is needed.

✅ Type: Caged machined, open enclosure with oil holes
✅ Model: RNA49/48 metric series, single-row needle roller
✅ Dimensions: 55 mm ID x 70 mm OD x 22 mm width
✅ Material: High carbon steel; dynamic load 44,300 N, static 76,300 N
✅ Speed & pack: Max 7,500 rpm; weight 0.410 lb; sold as a single bearing (each)

💡 What is a needle roller bearing used for in compact machinery and linear slide units? Needle roller bearings deliver high radial load capacity in minimal space and are especially handy for tight assemblies. Quick overview: - Compact, high-load rolling element ideal where sealed ball bearing size is too large or a ceramic option isn’t needed - Common in linear slide unit guides, gearboxes, pumps, and automotive transmissions - Oil hole models allow relubrication for longer service life and easier maintenance