Permco’s Two-Speed motors have the two-speed valve built into the bearing carrier providing compact packaging and offering lower system cost by eliminating expensive external components. The two-speed valve can be shifted on the fly to either low speed/high torque or high speed/low torque modes.
Two-Speed motors are ideal for winch, crawler, conveyer, auger and many other types of applications with low speed/high torque and high speed/low torque requirements.
In winch or over hung load applications a counterbalance valve should be included in the hydraulic circuit; the counterbalance valve can be mounted directly to the bearing carrier outlet port if needed. It should be noted that two-speed motors should not be used in applications where counterbalancing in both directions is required.
Please see attached pdf for more information.