• Final Drive & Differential Designs

    Final drive designs

    Final Drive & Differential Design

    What is a Final Drive & Differential Assembly? Basically, this is the last set of gears that will decrease the rpm and deliver the necessary rotational Torque (Tq) to the output drive shaft(s).  Rj Link Int. has developed several Final Drive Assemblies that can be used in conjunction with regular operation drive applications. Most of these ratios are in the (2.7:1 – 4.5:1) range.  The key to remember is that the output will never rotate as fast as the engine.  This includes having an overdrive condition.  The system needs both the final drive and the differential to work in conjunction.


    Two of the most common systems:

    • Front Drive (FWD) Applications – We mount the unit in the transverse plane, meaning it operates & transmits torque in a parallel relation to the forward/reverse direction.
    • Rear Drive (RWD) Applications – We mount the unit towards the rear of vehicle usually inside the frame rails.  This means the unit is connected via. Driveshaft, and in general, it operates at 90 degrees (Right Angle) to the axis of forward / reverse rotation.


    Things to remember in specifying a Final Drive application:

    • How much Torque (Tq) do you need to move your vehicle in the forward / reverse directional
    • You will have two assemblies that need to be packaged & mounted. I.e. the final drive gearing and the Differential Case.


    The following are some of the Markets for these types of arrangements:  Agricultural, Marine, Construction / Mining, Military, Off-Road & specialty Vehicles, Transportation, Rail, and other Drivetrain type Applications.

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