{"product_id":"inner-ring-lrt455520-metric-needle-roller-bearing","title":"Inner Ring LRT455520 Metric Needle Roller Bearing Inner Race 45 mm ID x 55 mm OD x 20 mm Width, High Carbon Steel, Machined Type for RNAF557220, Single Bearing for Linear Slide Units","description":"Metric inner ring single 45mm ID x 55mm OD x 20mm\u003cbr\u003e\n✔️ Machined inner ring for RNAF557220, 45x55x20 mm, single unit\n\n\u003cp\u003eThis is a machined metric inner ring (inner race) for needle roller bearing assemblies, commonly used in linear slide units, gearboxes, and compact industrial mechanisms where a precise raceway is needed.\u003c\/p\u003e\n\n✅ Model: LRT455520 inner ring, Metric Series, machined type\u003cbr\u003e\n✅ Dimensions: Bore 45 mm, OD 55 mm, Width 20 mm\u003cbr\u003e\n✅ Material: High carbon steel, suited for needle roller bearings and linear slide unit installs\u003cbr\u003e\n✅ Compatibility: Designed to assemble with RNAF557220; single bearing pack, SKU 861700; weight 0.260 lb\u003cbr\u003e\n✅ Application notes: Works alongside sealed ball bearing housings and can pair with ceramic upgrade options for specific performance needs\u003cbr\u003e\n\n\u003cp\u003e💡 What is an inner ring used for in needle roller bearing assemblies?\nAn inner ring provides a hardened, precise raceway so rollers run smoothly and shafts stay aligned in tight spaces.\n- It creates the required race surface and secures roller alignment in compact assemblies.\n- Handy for linear slide units, transmissions, and shaft-mounted needle roller setups.\n- Enables compatibility with sealed ball bearing housings and ceramic upgrade paths for higher-speed or reduced-friction applications.\u003c\/p\u003e","brand":"MRO","offers":[{"title":"Default Title","offer_id":47969456292075,"sku":"861700","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/inner-ring-lrt455520-rolling-bearing.png?v=1775239391","url":"https:\/\/vxb.com\/products\/inner-ring-lrt455520-metric-needle-roller-bearing","provider":"VXB Bearings","version":"1.0","type":"link"}