Single machined needle roller bearing NA4903, 17 mm ID x 30 mm OD x 13 mm width, high carbon steel with oil hole, precision needle unit for linear slides and sealed bearing replacements

Single NA4903 machined needle roller bearing 17x30x13
✔️ Single bearing; high carbon steel; oil hole; 17 mm ID, 30 mm OD, 13 mm W

This machined-type needle roller bearing is a single-piece part used for compact rotary shafts and linear slide units in transmissions, gearboxes, and power tools.

✅ Model NA4903, machined needle roller bearing
✅ Dimensions: 17 mm ID x 30 mm OD x 13 mm width
✅ Material: high carbon steel with oil hole for lubrication
✅ Ideal for linear slide units, transmissions, and tight-fit shafts
✅ Single bearing pack for immediate replacement and retrofit

💡 What is a needle roller bearing used for in linear slide units and tight-fit shafts? Needle roller bearings give high radial load capacity in narrow spaces. - High load capacity in minimal radial space, handy where sealed ball bearing or ceramic options are too big. - Commonly used in linear slide units, transmissions, gearboxes, and power tools for compact rolling support. - Machined types with oil holes suit applications needing lubrication access and precision fits.