{"product_id":"metric-inner-ring-45-x-52-x-23-mm-single-unit-high","title":"Metric inner ring 45 x 52 x 23 mm single unit, high carbon steel needle roller bearing race compatible with RNA4909UU, general purpose bearing part for linear slide units and sealed ball bearing replacements","description":"Single metric inner ring 45 x 52 x 23 mm for RNA4909UU\u003cbr\u003e\n✔️ 45 mm ID, 52 mm OD, 23 mm width, high carbon steel, machined LRTZ455223\n\n\u003cp\u003eThis is a single metric inner ring (inner race) for needle roller bearings, commonly used in linear slide units, machine repairs, and sealed ball bearing replacements.\u003c\/p\u003e\n\n✅ Model: LRTZ455223 inner ring for needle roller bearings\u003cbr\u003e\n✅ Dimensions: 45 mm ID x 52 mm OD x 23 mm width\u003cbr\u003e\n✅ Material: high carbon steel, machined finish, chamfer bore, no oil hole\u003cbr\u003e\n✅ Compatibility: fits RNA4909UU assemblies for general use\u003cbr\u003e\n✅ Pack: single unit, SKU 861630, approx. weight 0.200 lb\u003cbr\u003e\n\n\u003cp\u003e💡 What is an inner ring for needle roller bearings used for?\nThis component provides a hardened running surface and precise support for rollers.\n- It creates the mating surface inside needle roller and sealed ball bearing setups, improving load distribution and reducing wear.\n- It affects linear slide unit fit and axial positioning; correct ID\/OD and width ensure smooth motion and alignment.\n- Handy for maintenance or upgrades when replacing worn inner races or fitting hybrid ceramic assemblies.\u003c\/p\u003e","brand":"MRO","offers":[{"title":"Default Title","offer_id":47969349501163,"sku":"861630","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/20682ceaf85a85544ed015afe2c39601.png?v=1775237010","url":"https:\/\/vxb.com\/products\/metric-inner-ring-45-x-52-x-23-mm-single-unit-high","provider":"VXB Bearings","version":"1.0","type":"link"}