The hydraulic trailer winch is a specialized pulling device permanently mounted to the frame of a flatbed trailer, rollback truck, or heavy-haul trailer, designed specifically for loading vehicles and heavy cargo. Unlike manual or electric winches, a hydraulic trailer winch utilizes the hydraulic system of the towing vehicle or a separate power pack to generate high pulling capacity—often up to 20,000 lbs or more—without draining batteries, making it ideal for repetitive heavy pulling on a car hauler. These winches feature a low-profile design to fit between the trailer rails and a long-duty cycle appropriate for commercial carriers who may load multiple cars per day. A hydraulic trailer winch typically includes a solenoid control valve integrated into the winch body, allowing the operator to use a remote pendant to control the spooling in and out, staying safely at the rear of the trailer during loading. Some models offer a free-spooling feature via a lever-operated clutch, enabling the operator to quickly pull the cable to the disabled vehicle’s axle. For heavy-duty rollback wreckers, a low-pressure hydraulic winch with a large hydraulic motor ensures the consistent line speed needed to pull a heavy SUV onto the tilted bed without stalling. For a hydraulic trailer winch that meets your specific GVWR and mounting bolt pattern requirements, please contact our parts department.