PI 003-16 Lohr am Main, 2016-01-20

Compact and complete: new Rexroth transmission units for winch drives

Transmission units in a modular system: fine positioning, even for large loads.

At the bauma trade fair, Rexroth will be introducing an especially compact drive solution for crane winches, the newly developed GFW 5000 transmission unit series. The modular system includes reduction gears optimally adjusted for winch applications and matching Rexroth variable and fixed motors. The newly developed nine-piston rotary groups improve concentricity and thus the fine positioning of crane loads at low rope speeds. High rope speeds increase daily productivity, even with heavy loads.

The new series is suitable for use in mobile and stationary applications in mobile and crawler cranes as well as railway, ship, port and container cranes. Finely scalable in terms of gearbox design, size and gear ratios, GFW 5000 transmission units cover an even wider torque range as the predecessor series with high power density. This spans from 7000 Nm, as much as a modern electric locomotive generates, to 105000 Nm. This corresponds to the power of a modern aircraft engine. Disc holding brakes are fully integrated into the gearbox. These are reliably adapted to each different motor size. Rexroth offers tailor-made bearings for the use of two winch gearboxes in one winch drum, which also allow for any necessary axial compensation.

The new transmission unit series complements the modular design concept for hydrostatic winch drives. Rexroth can optionally combine the GFW 5000 gearboxes with its wide range of variable and fixed motors as well as a rope drum including counter bearings to create a ready-to-install winch unit. The standard assembly groups with adapted mechanical interfaces make for fast configuration, which cuts expenses and the time required for construction, installation and logistics. The modular design concept with many interchangeable parts within the series guarantees quick delivery times.

Generously dimensioned tapered-roller bearings in the winch gearbox and the more powerful design of all torque-transmitting components increase operational reliability and extend the service life. In addition, Rexroth uses case-hardened gear wheels and tempered and surface-hardened ring gears in their easy-to-install and maintenance-friendly transmission units. These ensure the long service lives of the gearboxes, even under harsh application conditions, and low-noise operation.

Economical, precise, safe, and energy efficient: drive and control technology from Bosch Rexroth moves machines and systems of any size. The company bundles global application experience in the market segments of Mobile Applications, Machinery Applications and Engineering, and Factory Automation to develop innovative components as well as tailored system solutions and services. Bosch Rexroth offers its customers hydraulics, electric drives and controls, gear technology, and linear motion and assembly technology all from one source. With locations in over 80 countries, more than 33,700 associates generated sales revenue of approximately 5.6 billion euros in 2014.

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The Bosch Group is a leading global supplier of technology and services. It employs roughly 360,000 associates worldwide (as per April 1, 2015). The company generated sales of 49 billion euros in 2014.* Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiary and regional companies in some 60 countries. Including its sales and service partners, Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. In 2014, Bosch applied for some 4,600 patents worldwide. The Bosch Group’s strategic objective is to create solutions for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.”

Additional information is available online at , and

*The sales figure disclosed for 2014 does not include the former joint ventures BSH Bosch und Siemens Hausgeräte GmbH (now BSH Hausgeräte GmbH) and ZF Lenksysteme GmbH (now Robert Bosch Automotive Steering GmbH), which have since been taken over completely.


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Susanne Herzlieb
Maria-Theresien-Straße 23
97816 Lohr am Main
Phone: +49 9352 18-1573

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