NA6904UU Needle Roller Bearing Machined Type with Inner Ring, Sealed Oil Hole, Caged Design, High Carbon Steel, NA69 Metric Series, 20 mm ID x 37 mm OD x 30 mm Width, Single Unit
✔️ 20 mm ID x 37 mm OD x 30 mm W, high carbon steel, sealed, oil hole
This is a machined-type needle roller bearing with inner ring and seals, built for shaft-mounted and linear slide unit applications. Single bearing pack for industrial shafts, gearboxes, and precision slides.
✅ Model: NA6904UU (NA69 metric series), caged machined type✅ Dimensions: 20 mm ID x 37 mm OD x 30 mm width
✅ Material & seals: high carbon steel with synthetic rubber seals
✅ Lubrication: built-in oil hole for relubrication and longer service life
✅ Ratings: dynamic load 33,000 N, static load 44,600 N, max speed 8,500 rpm
✅ Extras: inner ring included, sealed for contamination protection, fits linear slide units and sealed ball bearing replacements
💡 What is a needle roller bearing used for in compact shaft and linear slide unit applications? Needle roller bearings deliver high radial load capacity in tight envelopes and are handy for supporting precision shafts and compact drive systems. Quick summary: - High load per cross-section, ideal for tight assemblies like linear slide units and small gearboxes. - Sealed, inner-ring types keep lubrication in and dirt out for longer life in harsh environments. - Oil-hole provisions and synthetic rubber seals simplify maintenance and improve uptime.