{"product_id":"tb-woods-tb-sf218-sure-grip-qd-bushing-2-125-in-bore","title":"Tb Woods TB-SF218 Sure-grip Qd Bushing 2.125 in Bore","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe TB Woods TB-SF218 is a Sure-Grip Quick-Detachable (QD) bushing in the SF series, designed for secure torque transmission in industrial mechanical drive systems. Featuring a 2.125-inch finished bore with a standard ANSI keyway, it accepts inch-series hardware and uses three 3\/8-16 capscrews tightened to 30 in-lb installation torque. The cast-iron body delivers a rated torque capacity of 11,000 in-lb, making it well-suited for demanding power transmission applications. Licensed mechanical and industrial technicians install this bushing onto QD-bored sheaves, sprockets, and hubs in belt-drive and chain-drive assemblies.\u003c\/p\u003e\u003cp\u003eThe TB-SF218 fits into conveyor systems, pump drives, fan drives, compressor drives, and general industrial machinery where a reliable QD-style bushing connection is required. It supports both standard and reverse mounting orientations, providing installation flexibility when working with existing sheave or sprocket configurations. The SF series size designation indicates a specific bolt circle and dimensional envelope suited for mid-range shaft sizes and moderate-to-heavy torque loads in continuous-duty industrial settings.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e2.125-inch finished bore with standard ANSI keyway for positive key engagement\u003c\/li\u003e\n\u003cli\u003eRated torque capacity of 11,000 in-lb for demanding drive applications\u003c\/li\u003e\n\u003cli\u003eThree 3\/8-16 capscrews installed at 30 in-lb torque for consistent clamping force\u003c\/li\u003e\n\u003cli\u003eSupports standard (STD) and reverse (REV) mounting orientations\u003c\/li\u003e\n\u003cli\u003e3.88-inch bolt circle for SF series dimensional compatibility\u003c\/li\u003e\n\u003cli\u003eCast-iron construction for durability in industrial environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with QD-bored sheaves, sprockets, and hubs that accept the SF series bushing envelope. Fits any QD-style drive component machined to the SF series bolt pattern and bore profile.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified mechanical or industrial technician. De-energize and lock out all drive equipment before mounting or removing the bushing. Clean the bushing bore, shaft, and mating hub taper thoroughly before assembly, and apply a light oil or anti-seize to capscrew threads only, not the taper surfaces. Follow the alternating torque sequence for the three capscrews to achieve even seating, and verify shaft alignment before returning the drive to service.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: SF (Sure-Grip QD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore\u003c\/strong\u003e: 2.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Circle\u003c\/strong\u003e: 3.88 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeyway\u003c\/strong\u003e: Standard ANSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Capscrews\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapscrew Size\u003c\/strong\u003e: 3\/8-16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapscrew Length\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware Series\u003c\/strong\u003e: Inch series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Torque\u003c\/strong\u003e: 30 in-lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque Capacity\u003c\/strong\u003e: 11,000 in-lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting\u003c\/strong\u003e: Standard or Reverse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign Type\u003c\/strong\u003e: OD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTBW Group No.\u003c\/strong\u003e: 11310\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: TB Woods\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: TB-SF218\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TB WOODS","offers":[{"title":"Default Title","offer_id":51525281939762,"sku":"TB-SF218","price":113.02,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d5af7873284e20cee2c5f3e9e66208af.jpg?v=1785469445","url":"https:\/\/voomisupply.com\/products\/tb-woods-tb-sf218-sure-grip-qd-bushing-2-125-in-bore","provider":"Voomi Supply","version":"1.0","type":"link"}