{"product_id":"browning-1045970-variable-pitched-sheave-2-groove-5-35-in-od","title":"Browning 1045970 Variable Pitched Sheave 2 Groove 5.35 in Od","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BROWNING 1045970 is a 2-groove variable pitched sheave designed for adjustable-speed belt drive systems in HVAC, industrial, and commercial equipment applications. With a 7\/8-inch bore and a 5.35-inch outside diameter, this sheave accommodates belt sections 3L, 4L, A, 5L, and B, making it a versatile choice for field-adjustable drive configurations. Sheave thickness measures 3 inches, and the face width ranges from 1-3\/8 to 2 inches. It weighs 7.4 pounds. HVAC and mechanical service technicians use this sheave to fine-tune blower and fan speeds without changing the drive assembly entirely.\u003c\/p\u003e\n\u003cp\u003eThis variable pitch sheave is commonly installed on belt-driven supply and return air blowers, exhaust fans, and other rotating equipment where airflow or speed adjustment is required during commissioning or seasonal balancing. The adjustable pitch design allows the technician to change the effective pitch diameter within a set range, altering the drive ratio without replacing the belt or the driven sheave. It is suited for both new installations and replacement service work in residential and light commercial settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e2-groove configuration supports dual belt drive setups for increased torque capacity\u003c\/li\u003e\n  \u003cli\u003eVariable pitch design allows field adjustment of drive speed ratio without drive replacement\u003c\/li\u003e\n  \u003cli\u003eAccepts belt sections 3L, 4L, A, 5L, and B for broad belt compatibility\u003c\/li\u003e\n  \u003cli\u003e7\/8-inch bore fits standard shaft sizes common in blower and fan assemblies\u003c\/li\u003e\n  \u003cli\u003e5.35-inch outside diameter with 3-inch sheave thickness for stable belt tracking\u003c\/li\u003e\n  \u003cli\u003eFace width adjustable from 1-3\/8 to 2 inches to accommodate pitch diameter changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation variable pitched sheave for belt-driven blower and fan assemblies using 3L, 4L, A, 5L, or B section belts with a 7\/8-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 mechanical service professional. Disconnect and lock out all power to the equipment before removing or installing any drive components. Ensure the sheave is properly seated and set screws are tightened securely to the shaft before restarting the drive. Verify belt tension and alignment after any pitch adjustment to prevent premature belt wear or sheave damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore (Inside Diameter)\u003c\/strong\u003e: 7\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 5.35 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: 1-3\/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: 3.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pitch Diameter (3L Belt)\u003c\/strong\u003e: 4.7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMin Pitch Diameter (4L or A Belt)\u003c\/strong\u003e: 4.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pitch Diameter (4L or A Belt)\u003c\/strong\u003e: 5.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMin Pitch Diameter (5L or B Belt)\u003c\/strong\u003e: 4.3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pitch Diameter (5L or B Belt)\u003c\/strong\u003e: 5.3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Open Turns (4L or A Belts)\u003c\/strong\u003e: 5 turns\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Open Turns (5L or B Belts)\u003c\/strong\u003e: 6 turns\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMin Open Turns (5L or B Belts)\u003c\/strong\u003e: 1 turn\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 7.4 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: 1045970\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BROWNING","offers":[{"title":"Default Title","offer_id":51543150723378,"sku":"1045970","price":339.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d9c8a1975b867e1b778b00f560e80ecb_ffe34a54-9996-4283-8f72-1ea6b74bc7e3.jpg?v=1785916510","url":"https:\/\/voomisupply.com\/products\/browning-1045970-variable-pitched-sheave-2-groove-5-35-in-od","provider":"Voomi Supply","version":"1.0","type":"link"}