Four Roller Drives
These models can transmit a constant horse power at all output speeds with an average efficiency of 90%. In these four roller models the automatic pressure system is maintained in equilibrium on the double cone rollers and all contact plates

In consequence there is no axial pressure on the bearings and no added stresses on the housing.

Output Torque at low speeds is greater than at high speeds.

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Output speed ranges and horsepower ratings for F.U. Drives at 1,750 rpm input.