{"product_id":"browning-1026574-single-groove-sheave-1-in-bore-cast-iron","title":"Browning 1026574 Single Groove Sheave 1 in Bore Cast Iron","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BROWNING 1026574 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Manufactured from cast iron, this sheave features a 1 inch finished bore and a 4.45 inch outer diameter. The pitch diameter measures 4.2 inches for 4L or A belt types and 3.86 inches for 3L belt types. The overall length through bore is 1-5\/32 inches. It is installed by HVAC technicians and mechanical contractors on fan and blower assemblies where precise belt alignment and durable pulley construction are required.\u003c\/p\u003e\n\u003cp\u003eThis sheave is suited for residential and light commercial HVAC blower assemblies, exhaust fans, and other belt-driven equipment requiring a single groove configuration. The finished bore means the hub is machined to final dimension and ready to mount on a 1 inch shaft without additional machining. Applications typically include air handling units, furnace blower sections, and ventilation fan drives where 3L, 4L, or A-section V-belts are used.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFinished bore at 1 inch — ready to install on a 1 inch shaft without additional machining\u003c\/li\u003e\n  \u003cli\u003eSingle groove profile accepts 3L, 4L, and A-section V-belts\u003c\/li\u003e\n  \u003cli\u003eCast iron construction for durability and resistance to wear in continuous-duty belt drive service\u003c\/li\u003e\n  \u003cli\u003e4.2 inch pitch diameter for 4L or A belt types; 3.86 inch pitch diameter for 3L belt types\u003c\/li\u003e\n  \u003cli\u003e4.45 inch outer diameter with 1-5\/32 inch overall length through bore\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 belt-driven blower and fan assemblies using 3L, 4L, or A-section V-belts with a 1 inch shaft bore requirement.\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 drive system before removing or installing any sheave. Verify shaft diameter matches the 1 inch finished bore before mounting, and secure the sheave with a properly sized key and setscrew. After installation, check belt tension and alignment per the belt and drive manufacturer guidelines before returning the system to service.\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 Sheave\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 1 inch (finished bore)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 4.45 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePitch Diameter (4L or A Belt)\u003c\/strong\u003e: 4.2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePitch Diameter (3L Belt)\u003c\/strong\u003e: 3.86 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\u003eGroove Width\u003c\/strong\u003e: 3\/4 inch\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: 1.6 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: 1026574\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BROWNING","offers":[{"title":"Default Title","offer_id":51542828613938,"sku":"1026574","price":117.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/29caa5f6ddb744b346157b8b43fb2b80_ae1c25df-5f7f-4e65-b064-597971ba2a51.jpg?v=1785908623","url":"https:\/\/voomisupply.com\/products\/browning-1026574-single-groove-sheave-1-in-bore-cast-iron","provider":"Voomi Supply","version":"1.0","type":"link"}