{"product_id":"browning-1045863-variable-pitched-sheave-2-groove-3-95in-od","title":"Browning 1045863 Variable Pitched Sheave 2 Groove 3.95in Od","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BROWNING 1045863 is a 2-groove variable pitched sheave designed for adjustable belt drive systems in HVAC and mechanical equipment applications. With a 3\/4 inch bore and 3.95 inch outside diameter, this sheave accepts 3L, 4L, A, 5L, and B section V-belts, giving technicians flexibility when setting or trimming blower and fan speeds without changing pulleys. Sheave thickness is 3 inches, and the face width adjusts from 1-3\/8 to 2 inches as the pitch diameter is varied across its operating range. Total weight is 4.18 pounds. Variable pitch sheaves are a standard tool for balancing airflow in air handling equipment after installation.\u003c\/p\u003e\n\u003cp\u003eThis sheave is used in residential and light commercial HVAC systems, particularly on supply and return air blower assemblies, fan coil units, and rooftop units where motor or blower speed must be field-tuned. The wide belt section compatibility — covering 3L through B section belts — makes it suitable across a broad range of drive configurations. Licensed HVAC technicians and mechanical contractors install this component during commissioning, system balancing, or belt drive replacement work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e2-groove design accepts 3L, 4L, A, 5L, and B section V-belts for broad compatibility\u003c\/li\u003e\n  \u003cli\u003eVariable pitch face width from 1-3\/8 to 2 inches allows field adjustment of effective pitch diameter\u003c\/li\u003e\n  \u003cli\u003e3\/4 inch bore fits common blower and motor shaft sizes in HVAC equipment\u003c\/li\u003e\n  \u003cli\u003e3.95 inch outside diameter with 3 inch sheave thickness for stable belt tracking\u003c\/li\u003e\n  \u003cli\u003ePitch diameter range supports speed tuning without motor or pulley replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or upgrade variable pitched sheave for residential and light commercial HVAC belt drive systems using 3L, 4L, A, 5L, or B section V-belts with a 3\/4 inch bore requirement.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and adjustment of variable pitch sheaves should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all power to the unit before removing or installing any belt drive components. Use a sheave alignment tool to verify parallel alignment between the drive and driven sheaves after setting pitch diameter. Confirm belt tension and pitch diameter adjustment are within the belt manufacturer specifications before returning the system to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Grooves\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 3.95 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSheave Thickness\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFace Width Range\u003c\/strong\u003e: 1-3\/8 to 2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Belt Sections\u003c\/strong\u003e: 3L, 4L, A, 5L, B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMin Pitch Diameter (3L Belt)\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pitch Diameter (3L Belt)\u003c\/strong\u003e: 3.3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMin Pitch Diameter (4L or A Belt)\u003c\/strong\u003e: 2.6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pitch Diameter (4L or A Belt)\u003c\/strong\u003e: 3.6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMin Pitch Diameter (5L or B Belt)\u003c\/strong\u003e: 2.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pitch Diameter (5L or B Belt)\u003c\/strong\u003e: 3.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.18 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 1045863\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BROWNING","offers":[{"title":"Default Title","offer_id":51542885531954,"sku":"1045863","price":354.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d9c8a1975b867e1b778b00f560e80ecb_0b607946-cc8f-46a3-80c5-bcf94ce36a3d.jpg?v=1785909935","url":"https:\/\/voomisupply.com\/products\/browning-1045863-variable-pitched-sheave-2-groove-3-95in-od","provider":"Voomi Supply","version":"1.0","type":"link"}