Product DescriptionThe TB WOODS TB-3J is a one-piece solid EPDM sleeve coupling insert designed to join two compatible coupling flanges and complete a sleeve coupling system. Rated at 78 in-lb of torque and capable of reaching 9,200 RPM, this size 3 insert provides reliable power transmission in demanding mechanical drive applications. Its 4-way flexing action absorbs shock, vibration, misalignment, and end float, protecting connected equipment from dynamic loads. The insert accommodates both angular misalignment up to 1 degree and parallel misalignment up to 0.01 inches. Licensed mechanics and millwrights working on light industrial drive systems are the typical installers.This insert is suited for use in blowers, compressors, conveyors, mixers, motors, and pumps across residential and light commercial mechanical systems. The EPDM construction offers chemical and oil resistance, making it appropriate for environments where fluid exposure is a concern. Its operating temperature range of -30 degrees F to 275 degrees F supports use in both cold-storage and elevated-temperature process environments. At 0.12 hp capacity at 100 RPM and up to 4.5 hp at 3,600 RPM, it fits a broad range of low-to-mid horsepower drive pairings.Key FeaturesOne-piece solid EPDM construction for durability and consistent flex performance4-way flexing action absorbs shock, vibration, angular misalignment, and end floatRated to 9,200 RPM maximum speed with 78 in-lb torque capacityChemical resistant and oil resistant material extends service life in harsh environmentsWide operating temperature range: -30 degrees F to 275 degrees FTorsional stiffness of 229 in-lb per radian for predictable drive behaviorCompatibilityDesigned as an OEM-style replacement insert for size 3 sleeve coupling systems requiring a one-piece solid EPDM insert. Compatible coupling flanges must match the size 3 designation; consult the coupling flange manufacturer specifications before installation.Installation NotesInstallation is performed by licensed millwrights or mechanical technicians familiar with flexible coupling systems. De-energize and lock out the drive motor before beginning any coupling service work. Ensure both mating flanges are cleaned and free of debris before seating the insert. Do not exceed the rated torque or maximum speed when specifying this insert for a drive application.Technical SpecificationsCoupling Size: 3Rated Torque: 78 in-lbMaximum Speed: 9,200 RPMTorsional Stiffness: 229 in-lb/radHorsepower at 100 RPM: 0.12 hpHorsepower at 1,800 RPM: 2.2 hpHorsepower at 3,600 RPM: 4.5 hpInsert Material: EPDMInsert Construction: One Piece SolidInsert Width: 1 inchOutside Diameter: 1.875 inchesParallel Misalignment Capacity: 0.01 inchesAngular Misalignment Capacity: 1 degreeMinimum Operating Temperature: -30 degrees FMaximum Operating Temperature: 275 degrees FResistance Properties: Chemical Resistant, Oil ResistantWeight: 0.06 poundsCountry of Origin: USA (subject to change)Standard InformationBrand: TB WOODSManufacturer Part Number: TB-3J