{"product_id":"browning-1028265-single-groove-sheave-4-1-4in-od-cast-iron","title":"Browning 1028265 Single Groove Sheave 4-1\/4in Od Cast Iron","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BROWNING 1028265 is a finished bore single groove sheave designed for use with V-belt drive systems in HVAC, industrial fan, and blower applications. Cast iron construction provides the rigidity and wear resistance required for continuous-duty belt drive service. The sheave features a 5\/8 inch finished bore, a 4-1\/4 inch outer diameter, and a 3.5 inch pitch diameter for 4L or A-type belts. The groove is precision-machined to maintain belt alignment and reduce drive slip. Licensed contractors and mechanical tradespeople install this component when replacing worn sheaves or reconfiguring drive ratios on belt-driven equipment.\u003c\/p\u003e\n\u003cp\u003eThis sheave is suited for belt drive assemblies found in residential and light commercial HVAC air handlers, belt-drive blower sections, ventilation fans, and general-purpose industrial machinery. It is sized for 4L or A-series V-belts with a 3.5 inch pitch diameter and an overall through-bore length of 1-5\/32 inches. The finished bore ships ready for direct shaft installation without additional machining, making it a practical drop-in replacement in field service situations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCast iron construction for durability in continuous-duty belt drive applications\u003c\/li\u003e\n  \u003cli\u003eFinished 5\/8 inch bore — no machining required before installation\u003c\/li\u003e\n  \u003cli\u003eSingle groove design accepts 4L or A-series V-belts\u003c\/li\u003e\n  \u003cli\u003e3.5 inch pitch diameter for accurate drive ratio calculations\u003c\/li\u003e\n  \u003cli\u003e4-1\/4 inch outer diameter with 7\/8 inch face width\u003c\/li\u003e\n  \u003cli\u003eOverall bore length of 1-5\/32 inches for positive shaft engagement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement sheave for belt-driven blowers and fans using 4L or A-series V-belts with a 3.5 inch pitch diameter and a 5\/8 inch shaft.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified HVAC technician or mechanical tradesperson. Disconnect and lock out all electrical power to the unit before removing the existing sheave or belt. Verify shaft diameter and keyway dimensions match the finished bore before mounting. Confirm belt tension and alignment with a straightedge or laser alignment tool after installation to prevent premature belt or bearing wear.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSheave Type\u003c\/strong\u003e: Single Groove\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 4-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePitch Diameter (4L or A Belt)\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFace Width\u003c\/strong\u003e: 7\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length Through Bore\u003c\/strong\u003e: 1-5\/32 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cast Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Type\u003c\/strong\u003e: Finished Bore\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.95 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31171804\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: BROWNING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1028265\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BROWNING","offers":[{"title":"Default Title","offer_id":51543576903986,"sku":"1028265","price":141.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/66e5509177cce224995142a4f121d321.jpg?v=1785920531","url":"https:\/\/voomisupply.com\/products\/browning-1028265-single-groove-sheave-4-1-4in-od-cast-iron","provider":"Voomi Supply","version":"1.0","type":"link"}