{"product_id":"browning-1028430-single-groove-sheave-1-1-8-bore-4-3-4-od","title":"Browning 1028430 Single Groove Sheave 1-1\/8 Bore 4-3\/4 Od","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BROWNING 1028430 is a finished bore single groove sheave designed for use with V-belt drive systems in HVAC, industrial, and mechanical applications. Manufactured from cast iron, this sheave features a 1-1\/8 inch bore diameter and a 4-3\/4 inch outside diameter, with a belt pitch diameter of 4.0 inches for 4L or A-series belts. The overall length through bore measures 1-5\/32 inches and the face width is 7\/8 inch. Licensed HVAC technicians, millwrights, and mechanical contractors install this type of sheave on fan and blower drive assemblies where a single V-belt is required.\u003c\/p\u003e\n\u003cp\u003eThis sheave is suited for single-groove belt drive configurations found in residential and light commercial HVAC blower assemblies, exhaust fans, and general-purpose motor drive systems. The finished bore is ready for direct shaft installation without additional machining. The cast iron construction provides durability in continuous-duty rotation environments typical of air handler and rooftop unit fan sections.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFinished bore at 1-1\/8 inches — no additional machining required for standard shaft installation\u003c\/li\u003e\n  \u003cli\u003e4-3\/4 inch outside diameter with 4.0 inch pitch diameter for 4L or A-series V-belts\u003c\/li\u003e\n  \u003cli\u003eSingle groove design for straightforward single-belt drive configurations\u003c\/li\u003e\n  \u003cli\u003eCast iron construction for durability in continuous-duty rotating applications\u003c\/li\u003e\n  \u003cli\u003eFace width of 7\/8 inch suits standard V-belt groove geometry\u003c\/li\u003e\n  \u003cli\u003eBelt pitch B diameter of 4.4 inches for B-series belt reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit sheave for single-groove V-belt drive assemblies using 4L, A, or B-series belts on fan and blower motor shafts with a 1-1\/8 inch shaft diameter.\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 electrical power to the motor before removing or installing any sheave or belt. Ensure proper sheave alignment using a straightedge or laser alignment tool before tensioning the belt to manufacturer-recommended deflection. Inspect the shaft keyway and set screws for wear before seating the sheave.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 1-1\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 4-3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePitch Diameter (4L or A Belt)\u003c\/strong\u003e: 4.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBelt Pitch B Diameter\u003c\/strong\u003e: 4.4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFace Width\u003c\/strong\u003e: 7\/8 inch\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 Configuration\u003c\/strong\u003e: Single Groove\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: 1.7 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: 1028430\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BROWNING","offers":[{"title":"Default Title","offer_id":51542025339186,"sku":"1028430","price":146.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/29caa5f6ddb744b346157b8b43fb2b80_b1c22a2a-ccc3-4345-afc0-081347b9f7cb.jpg?v=1785889974","url":"https:\/\/voomisupply.com\/products\/browning-1028430-single-groove-sheave-1-1-8-bore-4-3-4-od","provider":"Voomi Supply","version":"1.0","type":"link"}