{"product_id":"browning-1045897-variable-pitched-sheave-2-groove","title":"Browning 1045897 Variable Pitched Sheave 2 Groove","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BROWNING 1045897 is a two-groove variable pitched sheave designed for adjustable V-belt drive applications in HVAC, industrial, and mechanical systems. Cast from iron, it accepts a 1.125-inch bore and measures 3.95 inches in outside diameter with a 3-inch sheave thickness. The variable pitch design allows technicians to adjust drive ratios without swapping components, making it a practical solution for fan speed tuning and belt drive optimization. Compatible belt sections include 3L, 4L, 5L, A, and B, giving it broad versatility across common fractional and standard V-belt configurations. HVAC and mechanical contractors are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThis sheave is well suited for residential and light commercial air handling equipment, rooftop units, exhaust fans, and other belt-driven blower assemblies where motor-to-blower speed ratios require periodic adjustment. The two-groove configuration supports dual-belt drive setups, which distribute load across both grooves for improved torque transfer and reduced belt wear. Face width ranges from 1.375 to 2 inches depending on pitch setting, allowing incremental pitch diameter adjustment within the specified range for each belt section.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eVariable pitch design enables drive ratio adjustment without sheave replacement\u003c\/li\u003e\n  \u003cli\u003eTwo grooves for dual V-belt configurations, improving load distribution\u003c\/li\u003e\n  \u003cli\u003eAccepts 3L, 4L, 5L, A, and B belt sections for broad application coverage\u003c\/li\u003e\n  \u003cli\u003eCast iron construction for durability in continuous-duty drive applications\u003c\/li\u003e\n  \u003cli\u003e1.375 to 2 inch adjustable face width for pitch diameter fine-tuning\u003c\/li\u003e\n  \u003cli\u003e3-inch sheave thickness provides stable belt engagement across the pitch range\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 belt-driven blower and fan assemblies using 3L, 4L, 5L, A, or B section V-belts with a 1.125-inch bore shaft.\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 or installing sheaves. Ensure the shaft diameter matches the 1.125-inch bore and that the sheave is properly aligned with its mating component using a straightedge before tensioning belts. Adjust pitch diameter setting before final tightening, and verify belt tension per manufacturer belt drive guidelines after installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 1.125 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\u003eNumber of Grooves\u003c\/strong\u003e: 2\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: 1.375 to 2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Belt Sections\u003c\/strong\u003e: 3L, 4L, 5L, A, 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\u003eMaterial\u003c\/strong\u003e: Cast Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.9 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 26111800\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: 1045897\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BROWNING","offers":[{"title":"Default Title","offer_id":51543031415090,"sku":"1045897","price":163.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/875cf5481f73db772142ec9ebb9af55d.jpg?v=1785914162","url":"https:\/\/voomisupply.com\/products\/browning-1045897-variable-pitched-sheave-2-groove","provider":"Voomi Supply","version":"1.0","type":"link"}