{"product_id":"single-machined-na4904uu-na49-needle-roller-20-mm","title":"Single machined NA4904UU NA49 needle roller, 20 mm ID x 37 mm OD x 17 mm width, high carbon steel, oil hole, sealed with inner ring, caged metric bearing, ideal for linear slide unit and shafts","description":"Single NA4904UU machined needle bearing, sealed\u003cbr\u003e\n✔️ 20 mm ID x 37 mm OD x 17 mm width, high carbon steel, oil hole\n\n\u003cp\u003eThis machined NA4904UU needle roller bearing is sold as a single unit with seals and an inner ring. It’s commonly used in linear slide units, compact shafts, transmissions and other tight applications that need strong radial support.\u003c\/p\u003e\n\n✅ Model: NA4904UU, NA49 metric series\u003cbr\u003e\n✅ Inner diameter 20 mm, outer diameter 37 mm, width 17 mm\u003cbr\u003e\n✅ Material: high carbon steel, caged machined construction\u003cbr\u003e\n✅ Dynamic load capacity 18000 N, static load capacity 20500 N\u003cbr\u003e\n✅ Max speed 8500 rpm, includes oil hole for lubrication\u003cbr\u003e\n✅ Enclosure: synthetic rubber seals, inner ring included, sealed unit\u003cbr\u003e\n✅ Sold as a single bearing, weight approx 1.0 lb each\u003cbr\u003e\n\n\u003cp\u003e💡 What is a sealed needle roller bearing used for in linear slide units and shafts?\nA sealed needle roller bearing is a handy option when you need a compact, high-capacity radial support with low maintenance.\n- Ideal for supporting high radial loads in confined assemblies like linear slide unit and shaft applications\n- The sealed design retains lubricant and keeps contamination out, similar to a sealed ball bearing for longer service life\n- Preferred over ceramic bearings when impact resistance and cost are priorities; ceramic options are chosen for very low friction or high temperature needs\u003c\/p\u003e","brand":"Bearings Canada","offers":[{"title":"Default Title","offer_id":52511472877887,"sku":"1912002","price":147.08,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/4750\/8031\/files\/na4904uu-needle-roller-bearing-high-carbon-steel.png?v=1776636180","url":"https:\/\/bearingscanada.com\/products\/single-machined-na4904uu-na49-needle-roller-20-mm","provider":"Bearings Canada","version":"1.0","type":"link"}