An adjustment stroke connection for a mechanical press includes an
eccentric bushing disposed within a press connection member and an
eccentric crankshaft member disposed within the eccentric bushing. A
rotatable crankshaft is connected to the eccentric member. A mechanism is
provided for connecting the eccentric bushing with the press connection
member in a manner that prevents rotation therebetween and concurrently
permits rotation of the eccentric member relative to the eccentric
bushing. When the mechanism is activated, driving rotation of the
crankshaft produces a press stroke adjustment. A torque actuator delivers
equal driving torque to plural eccentric crankshaft members to enable
minimization of relative bushing angle slip. Suitable control of the
bushing angle and slide position crank angle during bushing expansion and
contraction also minimizes relative bushing angle slip.