Introduction to 800 Series winch drives

The 800 Series winch drives represent a cutting-edge technological solution, specifically developed for the motorization of hydraulic winches. Thanks to their compact and robust design, these components can be easily integrated within the drum, optimizing space and ensuring high-level performance in every operational context.

This series comprises a range of gearboxes specifically engineered for winch control, while also offering the possibility of providing complete winch units. Flexibility is one of its core strengths: it is possible to request the gearbox alone, the system with drum support, or the fully assembled unit prepared for various types of hydraulic motors. Choosing a winch drive in this category means opting for a guaranteed successful product.

Valuable technical and construction features

The 800 Series stands out for technical specifications that offer real added value to designers. These units are rotating-housing planetary gearboxes, designed to be flanged directly inside the winch drum. This configuration allows for the management of drum torques reaching 42,000 Nm, with line pulls up to 17 tons.

Key features include:

• High load capacity: The drum is supported directly by the gearbox, simplifying the overall mechanical structure.

• Multi-disc brake: Integrated at the gearbox input, it operates in an oil bath with hydraulic release and spring closure, ensuring extremely effective static and emergency braking.

• Superior braking torque: Calculated to be on average 1.6 to 1.8 times the nominal transmitted torque.

• Optional free-wheel: Allows for load lifting without needing to release the brake, which engages only during the descent phase.

Industrial applications and sectors of use

Thanks to their versatility, 800 Series winch drives find application in numerous fields where heavy lifting is a priority. They are widely used on mobile cranes, off-road cranes, and stationary installations. Furthermore, their resistance to corrosion and harsh environmental conditions makes them ideal for marine lifting and use in forestry machinery.

The integration of these gearboxes allows for the fulfillment of any application requirement, ensuring extremely precise starts and stops. This remains possible even when using hydraulic motors with low starting torque, such as gear or vane motors, thanks to the free-wheel device that optimizes load-up maneuvers.

Details on planetary mechanics

The 800 Series reductions are of the 2 or 3-stage planetary type. The gears, shared with other high-end series such as Trasmital, undergo shaving, case-hardening, and tempering processes to ensure exceptional operational life. All tooth profiles are corrected to minimize sliding and maximize tooth root strength, while the internal ring gears are made of quenched and tempered steel.

A fundamental aspect is lubrication: the gearbox utilizes a splash system with gear oil, while the brake compartment features separate lubrication with hydraulic oil. This ensures that every component works under ideal conditions, reducing wear and the need for frequent maintenance interventions.

3D models and design support

As with the other series discussed, we provide 3D model visualization for the winch drives. This tool is essential for understanding the gearbox footprint inside the drum and for evaluating the flanging interfaces to the frame. Although the model serves an illustrative purpose, it represents a highly useful visual support during the preliminary configuration phases of the lifting system.

Being able to observe the rotating-housing structure and the arrangement of the planetary stages allows technicians to better integrate the component into their design, ensuring aesthetic and functional consistency with the rest of the machine.