{"product_id":"browning-1026681-single-groove-sheave-1in-bore-5-1in-od","title":"Browning 1026681 Single Groove Sheave 1in Bore 5.1in Od","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BROWNING 1026681 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Cast from iron for durability, this sheave features a 1 inch finished bore diameter and a 5.1 inch outer diameter, making it a direct-mount component ready for installation without additional machining. The groove accepts standard 4L or A profile belts with a pitch diameter of 4.7 inches, as well as 3L profile belts with a pitch diameter of 4.36 inches. The overall length through bore is 1-5\/32 inches and the face width is 3\/4 inch. Licensed HVAC technicians, millwrights, and mechanical contractors typically install this sheave in blower and fan drive assemblies.\u003c\/p\u003e\n\u003cp\u003eThis sheave is suited for use in belt-driven blower assemblies, air handling units, exhaust fans, and general-purpose power transmission setups found in both residential and light commercial settings. The finished bore eliminates the need for machining on-site, making it practical for field replacement of worn or damaged sheaves in existing drive systems. It is compatible with standard A and 4L cross-section V-belts as well as 3L belts, providing flexibility when sourcing replacement belts in the field.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFinished 1 inch bore — no additional machining required for installation\u003c\/li\u003e\n  \u003cli\u003e5.1 inch outer diameter with a 3\/4 inch face width\u003c\/li\u003e\n  \u003cli\u003eSingle groove design accepts 4L or A profile V-belts (4.7 inch pitch diameter)\u003c\/li\u003e\n  \u003cli\u003eAlso compatible with 3L profile V-belts (4.36 inch pitch diameter)\u003c\/li\u003e\n  \u003cli\u003eCast iron construction for wear resistance and long service life\u003c\/li\u003e\n  \u003cli\u003eOverall length through bore of 1-5\/32 inches for straightforward shaft fitting\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 standard 4L, A, or 3L cross-section belts. Verify bore diameter and belt groove profile match the existing drive system before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified HVAC technician or millwright. Disconnect and lock out all power to the drive system before removing the existing sheave. Ensure the shaft diameter matches the 1 inch finished bore and that the new sheave is aligned with the mating sheave using a straightedge before tightening the set screw. Check belt tension and alignment after installation per the belt manufacturer guidelines.\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\u003eBore Diameter\u003c\/strong\u003e: 1 inch (finished)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 5.1 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBelt Pitch Diameter (4L or A)\u003c\/strong\u003e: 4.7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBelt Pitch Diameter (3L)\u003c\/strong\u003e: 4.36 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFace Width\u003c\/strong\u003e: 0.75 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: 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: 1026681\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BROWNING","offers":[{"title":"Default Title","offer_id":51542686564658,"sku":"1026681","price":66.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4438c73a7e49243be265c5533f175a3d.jpg?v=1785904403","url":"https:\/\/voomisupply.com\/products\/browning-1026681-single-groove-sheave-1in-bore-5-1in-od","provider":"Voomi Supply","version":"1.0","type":"link"}