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This work is focused on a rolling mill’s main drive electromechanical coupling system. Firstly, we equip electromechanical coupling system with fractional-order time delay. Secondly, we, respectively, derive the conditions for occurrence of Hopf bifurcation around equilibriums  E 0 0 , 0 , 0 , 0 and  E 1 x 1 ∗ , 0 , x 3 ∗ , 0 . It is found that the fractional order  α and time delay  τ in the system play an important role on the system stability. Finally, numerical simulations are given to verify the analytic results.

Bifurcation Analysis of a Fractional-Order Delayed Rolling Mill’s Main Drive Electromechanical Coupling System