{"product_id":"needle-roller-inner-ring-lrtz708031-70-mm-id-x-80","title":"Needle roller inner ring LRTZ708031, 70 mm ID x 80 mm OD x 31 mm width, metric high-carbon steel race for RNA4914UU assembly, general use, compatible with linear slide units, single unit","description":"LRTZ708031 needle inner ring, 70×80×31 mm\u003cbr\u003e\n✔️ Single unit, high-carbon steel; fits RNA4914UU; metric\n\n\u003cp\u003eThis machined needle roller inner ring is a single unit inner race used to assemble with RNA4914UU needle roller bearings. It’s typically found in linear slide units, gearboxes, and general-purpose industrial machinery where a compact hardened raceway is handy.\u003c\/p\u003e\n\n✅ Model: LRTZ708031 (Metric LRTZ series)\u003cbr\u003e\n✅ Bore (ID): 70 mm; Outside Dia (OD): 80 mm; Width: 31 mm\u003cbr\u003e\n✅ Material: high carbon steel; machined inner race; no oil hole\u003cbr\u003e\n✅ Fits RNA4914UU needle roller bearings; ideal for linear slide units\u003cbr\u003e\n✅ Single piece; weight ~0.610 lb; SKU 862378; general-use inner ring\u003cbr\u003e\n\n\u003cp\u003e💡 What is an inner ring used for in needle roller bearings and linear slide units?\nAn inner ring gives the rollers a hardened running surface and keeps them aligned so the assembly handles radial loads smoothly. Here's a quick summary:\n- Provides a hardened raceway to support needle rollers in sealed ball bearing and roller assemblies\n- Maintains alignment and load distribution in compact linear slide units and gearboxes\n- Works with ceramic or steel rollers for extended life; handy for tight-fit applications\n\u003c\/p\u003e","brand":"MRO","offers":[{"title":"Default Title","offer_id":47969476673771,"sku":"862378","price":71.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/needle-roller-inner-ring-lrtz708031.png?v=1775239829","url":"https:\/\/vxb.com\/products\/needle-roller-inner-ring-lrtz708031-70-mm-id-x-80","provider":"VXB Bearings","version":"1.0","type":"link"}