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              Vibratech TVD Torsional Vibration Dampers
              Home / Brands/Vibratech TVD

              Vibratech TVD

              Vibratech TVD - Heavy Duty Torsional Viscous Vibration Dampers For Diesel Engines

              The crankshaft damper is a vital component of your heavy-duty diesel engine. Vibratech TVD is an American company producing American Made Torsional Viscous Vibration Dampers for over 70 years. These Vibratech TVD viscous torsional dampers are designed as a freely rotating inertia ring surrounded by a viscous silicone fluid that is then enclosed in a precision machined steel housing held by laser welding to create a hermetically sealed enclosure.

              The Vibratech torsional viscous crankshaft dampers are available for the following engine manufacturers:

              • Caterpillar Diesel Engines
              • Cummins Diesel Engines
              • Detroit Diesel Engines
              • International Navistar Diesel Engines

              Crankshaft Vibration in Diesel Engines: The Need for Viscous Crankshaft Damper Technology

              Torsional vibration occurs naturally during every engine's combustion cycle. In each cylinder, the initial force of ignition twists the crankshaft ahead of its natural rotation. Then, during the exhaust cycle, the crankshaft metal rebounds. This repeated twisting and rebounding motion happening while the crankshaft rotates is the cause of the damaging torsional vibration. All engine parts that contribute to generating torque and the design and material of the crankshaft affect the magnitude of torsional vibration.

              Torsional vibration spikes occurring from normal engine operation cause metal fatigue. This is especially damaging when torsional vibration amplifies in phase with the crankshaft's own natural frequency. Torsional vibration robs power, fuel economy and causes engine wear. Continuous flexing of the crankshaft also causes metal fatigue and crank failure, like bending a nail back and forth until it breaks.    

              The Vibratech TVD viscous torsional damper is an American Made product that has taken the hard lessons learned at the racetrack and applied these lessons to the big rig's diesel engines. Vibratech TVD is a global leader in viscous damper manufacturing, engineering, and torsional vibration analysis for gas, diesel, and power train applications. If you have increased the power output of your truck, now is the time to consider a high-performance crankshaft damper.

              Vibratech viscous dampers have been supporting the American trucking industry for over 70 years!

              Why should I replace my engine crankshaft damper?

              When it's time for a rebuild, you intend to keep this engine running in a trouble-free manner for an extended period of time. The cost of the rebuild is far less expensive than purchasing a new truck to do the same job. Rebuilds of a diesel engine now range from $14,000 to 24,000 dollars. A new crankshaft damper is available for between $350.00 and 550.00 dollars. Without a properly functioning vibration damper, the crankshaft of the engine is much more likely to break. Your heavy duty diesel engine vibrations are effectively controlled by the crankshaft damper. Without a properly functioning damper, the entire engine and its components are now at risk. The failure of parts like the camshaft, accessory driveshaft, springs, flywheel bolts, and flywheel housing are all signs the damper is no longer effectively controlling the damaging torsional vibrations. You do not want anything shaking your engine, and you don't want your engine shaking you. Increased driver fatigue has been proven to occur from increased engine vibrations. The smoother the engine, the longer you can drive it without getting fatigued.

              OEM Crankshaft Damper Failure

              This OEM damper was not changed during the engine rebuild process. Because the original crankshaft damper was not replaced at the time of the rebuild, this led to engine failure within two months. The black patches indicate the silicone has worn out. The silicone in a new Vibratech TVD damper is clear and gel-like in viscosity. It is approximately 45,000 times thicker than 30 weight of motor oil.

              The Warning Signs of a Diesel Engine Crankshaft Damper that needs to be replaced:

              • The increase of in-cab vibrations
              • An Increased level of driver fatigue at day's end.
              • Throwing or slapping of belts.
              • A noticeable loss of torque and horsepower.
              • A Loss of fuel economy.
              • Broken accessory brackets or accessory drive gear wear.
              • Loosening or broken bolts.
              • Unexplained broken accessory brackets.
              • Excessive bearing wear.
              • Crankshaft failure.
              • The damper is now leaking.
              • Damper housing has dents or signs of abuse.
              • Damper housing is now bulging.

              Your heavy duty diesel engine's crankshaft damper contributes to the overall durability and efficiency of your diesel engine. A viscous vibration damper is a crucial mechanical engine component that contains a free rotating inertia ring encased in a thin layer of viscous silicone. As it controls destructive torsional vibration to prolong the life of your engine, it will naturally wear out from the normal operation. Therefore, over-the-road truck applications, it is recommended to replace a viscous style damper every 500,000 to 750,000 miles, during in-frame and major overhauls, or according to your Owners Manual, whichever occurs first.

              Regardless of mileage or time in service, a viscous crankshaft damper should be replaced if:

              • The outer housing of the damper is dented.
              • There are no leaks around the housing weld.
              • There is a bulging of the housing cover.
              • You have purchased a used truck and are unsure if the damper was replaced.
              • If the service records do not show the crankshaft damper replacement when the in-frame engine overall was done, now is the time to replace the damper.

              Viscous Crankshaft Damper Installed

              The crankshaft damper is a vital mechanical engine component contributing to overall engine durability and reliability. Routine crankshaft damper inspection and scheduled replacement every 500,000 to 750,000 miles in over-the-road trucking applications are highly recommended. The image below depicts what can happen when the crankshaft damper is not replaced at the time of an in-frame overhaul. 

               

              Vibratech Viscous Crankshaft Damper Care

              Vibratech TVD recommends that you handle and install your new viscous crankshaft damper with care. The Vibratech TVD viscous crankshaft damper is designed and built as a maintenance-free engine component. In heavy-duty diesel engine applications, Vibratech TVD recommends viscous damper replacement every 500,000 miles / 15,000 hours, during in-frame or significant overhauls, if any housing damage has occurred, or as prescribed in the OEM Owner's Manual, whichever occurs first. If not replaced at the appropriate service interval, a worn viscous damper will lead to catastrophic engine failure. Replacing the damper does not fix wear, or extreme neglect of proper maintenance, to engine components. Unless otherwise specified, Vibratech TVD does not recommend or endorse the reuse of a viscous damper. Vibratech TVD viscous dampers are computer balanced and hermetically sealed at the time of manufacturing. Any tampering with the housing to recondition the damper may reduce its effectiveness and cause engine damage. Vibratech TVD viscous dampers are steel constructed and may be appropriately disposed of at a recycling center.

              Vibratech TVD has no connection or affiliation with Caterpillar, Cummins, Detroit Diesel, or International Navistar (etc.) and their affiliates. Reference in this catalog to any trademarked product(s), name(s), or OEM numbers is intended for recommendation to the usage of that Vibratech TVD part. None of the Vibratech TVD products on this website were manufactured by the previously mentioned companies or their suppliers. These torsional vibration dampers are made in an ISO 9001-accredited facility in New York State.

              Vibratech TVD proudly produces these high-performance heavy-duty diesel engine viscous dampers as an American Made Quality Product. 

              For more information about our Vibratech Viscous Crank Dampers, or for help with any of your performance needs, contact us at 203-210-7200.

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