{"product_id":"bell-gossett-52-128-642-001-series-ehsc-hsc-s-shaft-nut","title":"Bell \u0026 Gossett 52-128-642-001 Series eHSC\/HSC-S Shaft Nut","description":"\u003cp\u003eEnsure the mechanical integrity of your pump assembly with the \u003cstrong\u003e52-128-642-001\u003c\/strong\u003e shaft nut, engineered specifically for the \u003cstrong\u003eBell \u0026amp; Gossett Series eHSC\/HSC-S\u003c\/strong\u003e. This precision-machined component is essential for maintaining the correct axial positioning and locking of the impeller, preventing vibration and ensuring the overall rotational stability of your pumping system.\u003c\/p\u003e\u003cp\u003eThe Bell \u0026amp; Gossett e-HSC design leverages internally self-flushing mechanical seals to maximize heat dissipation and debris removal. This shaft nut is a critical link in that system, facilitating the smooth operation of the shaft assembly without the need for external flush lines or vulnerable filtration accessories that can impede long-term seal reliability.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Engineering:\u003c\/strong\u003e Manufactured to exacting tolerances for a secure fit within the eHSC assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Constructed to withstand the high-torque environments associated with commercial hydronic pumping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStructural Reliability:\u003c\/strong\u003e Prevents axial movement during high-velocity operation to protect internal seal components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e This shaft nut is intended exclusively for use in Bell \u0026amp; Gossett Series eHSC and HSC-S pumps. It is recommended for use during routine pump overhauls or seal replacements to ensure hardware integrity and prevent operational downtime in large-scale hydronic heating and cooling systems.\u003c\/p\u003e","brand":"Bell \u0026 Gossett","offers":[{"title":"Default Title","offer_id":43131258994782,"sku":"52-128-642-001","price":388.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/52_128_642_001_image_881c1599-2122-43df-bcd1-2186361fd484.jpg?v=1786092516","url":"https:\/\/nationalboilersupply.com\/products\/bell-gossett-52-128-642-001-series-ehsc-hsc-s-shaft-nut","provider":"National Boiler Supply","version":"1.0","type":"link"}