{"product_id":"browning-1026780-single-groove-sheave-5-45-in-od-3-4-in-bore","title":"Browning 1026780 Single Groove Sheave 5.45 in Od 3\/4 in Bore","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BROWNING 1026780 is a finished bore single groove sheave designed for use with V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Machined from cast iron, this sheave features a 5.45-inch outer diameter and a 3\/4-inch finished bore, making it a direct drop-in for standard belt drive configurations. The pitch diameter measures 5.2 inches for 4L and A-series belts and 4.86 inches for 3L-series belts. Overall length through the bore is 1-5\/32 inches. HVAC technicians, millwrights, and mechanical contractors install this type of component when replacing worn or damaged sheaves on fan and blower assemblies.\u003c\/p\u003e\n\u003cp\u003eThis sheave is suited for single-groove V-belt drive setups in residential and light commercial HVAC equipment, including belt-driven blowers, fans, and air handlers. The finished bore allows installation without additional machining. Its cast iron construction provides durability in continuous-duty motor and drive applications. The 3\/4-inch bore fits common fractional and integral horsepower motor shafts used in HVAC and ventilation equipment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5.45-inch outer diameter with 3\/4-inch finished bore — no additional machining required\u003c\/li\u003e\n  \u003cli\u003ePitch diameter of 5.2 inches for 4L and A-series V-belts\u003c\/li\u003e\n  \u003cli\u003ePitch diameter of 4.86 inches for 3L-series V-belts\u003c\/li\u003e\n  \u003cli\u003eSingle groove design for standard single V-belt drive configurations\u003c\/li\u003e\n  \u003cli\u003eCast iron construction for long service life in continuous-duty applications\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 single groove sheave for V-belt drive systems using 3L, 4L, or A-series belts with a 3\/4-inch shaft bore.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all electrical power to the motor and drive system before removing or installing any sheave. Verify shaft diameter and keyway dimensions before installation, and confirm belt type and drive ratio requirements before selecting belt and sheave combinations. Tighten any set screws to the fastener manufacturer's specification and inspect belt tension and alignment after installation.\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: 5.45 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 0.75 inches (3\/4 inch finished bore)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePitch Diameter (4L \/ A-Series Belt)\u003c\/strong\u003e: 5.2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePitch Diameter (3L-Series Belt)\u003c\/strong\u003e: 4.86 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\u003eWeight\u003c\/strong\u003e: 2.25 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: 1026780\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BROWNING","offers":[{"title":"Default Title","offer_id":51541531394354,"sku":"1026780","price":85.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/29caa5f6ddb744b346157b8b43fb2b80_20cde1c5-7e33-4599-9971-788c7c31679c.jpg?v=1785878541","url":"https:\/\/voomisupply.com\/products\/browning-1026780-single-groove-sheave-5-45-in-od-3-4-in-bore","provider":"Voomi Supply","version":"1.0","type":"link"}