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Green and productive
Kalmar launches next-generation, low-emission RTG: the E-One

Kalmar is introducing to the market the first all-electric RTG, the E-One. With the existing emission- and noise-free Kalmar Zero-Emission RTG and now the new E-One, Kalmar is able to meet latest environmental demands but also the requirements for operational productivity and life-time cost efficiency.

E-One is without the need for hydraulics and is suited to any operation around the world.

E-One features a low-emission diesel engine and is fitted with electric trolley, wheel turning and spreader. It contains fewer critical mechanical components and therefore provides less opportunity for mechanical failures. A service interval of up to 1,000 hours for both the crane and the engine is unmatched by all other brands.

E-One offers fuel savings of up to 30%. This is based on new intelligence in RTG movements: the crane speeds (gantry, hoisting) are adjusted according to the load under the spreader. Conventional RTGs’ hydraulics run constantly whereas in the E-One electrical power can be used only when needed.

E-One all-electric and maintenance-free load stability control (antisway and stabliser) add to reliability and help the crane driver to work faster and more accurately.

All these above-mentioned features combined result in a more productive operation with improved cost-efficiency for Kalmar customers.

The main environment friendly and productive features of the Kalmar E-One are:

All-electric wheel turning and gantry drive: There is no need for the commonly used hydraulic turning and locking system for wheel positioning. This minimizes the need for maintenance. In conventional RTGs, the separate locking system for wheel positions can get easily stuck and paralyse the machine.

Gantry wheels are driven directly without the chain, requiring less maintenance than in conventional chain-driven models. Gantry speed is adjusted based on the load under the spreader. This results in faster operations and fuel savings.


All-electric trolley: The trolley is a single-level design allowing easy access to all components for ease of maintenance.The Positive Drive ensures that the trolley always runs parallel to the rails and there is no diagonal movement or sliding. As malfunctions in trolley movement are eliminated, the machines record higher productivity rates. Many other makes use the friction-based traction system which is lacking these advantages.

A single hoist drum design also guarantees safe handling even with eccentric loads and twinlifting. The hoisting speed is adjusted according to the load under the spreader, resulting in faster operations and savings in fuel consumption.


Full Control antisway and stabilizer: A PLC-controlled sway prevention system requires no additional maintenance components and is also effective in high RTGs. The stabilizer eliminates all sway caused by external factors, which helps the operator lock on to the container. In high RTGs, where conventional sway-reduction methods are ineffective, something as simple as the wind, for example, can make the spreader swing and considerably hamper operations.

Operators can activate Kalmar stabilizer with the push of a button and, as the name suggests, it stabilizes the spreader for easy and fast manoeuvrability. The stabilizer can also be retrofitted to older Kalmar RTGs.

All-electric and maintenance-free spreader and micromovements: The E-One features a Bromma spreader, whose light design increases lifting capacity. The spreader is a reeved-in design, which reduces the lifted load resulting in fuel savings. In conventional RTG design, the spreader is attached to the headblock, which adds to the lifted load and increases fuel consumption.

The joystick-controlled spreader micromovements offer ± 5º skewing and optional trim with automatic centring also contributing to reliability and operating efficiency.

Global presence

RTGs and automatic stacking cranes constitute the biggest container handling system globally, with Asia being the fastest growing market. With the start up of its assembly unit in Shanghai, Kalmar is ready to meet the demands of this region.

2004 was a good year for Kalmar RTGs. Its latest RTG orders include: ten 16-wheel models for Jeddah, Saudi Arabia; five 16-wheel units to Liscont, Portugal; four eight-wheel models each to BCT Gdynia in Poland, Kumport in Turkey and Djibouti; one 16-wheel unit to Petrolesport at the Port of St Petersburg; and six 16-wheel models to Kenya Port Authority.

Kalmar comprehensive RTG range includes 8-wheel and 16-wheel models, as well as wide-span and short wheel base models. All products are backed up by Kalmar global network of local customer support.

Note to editors:

Press information can be found on Kalmar's website: www.kalmarind.com. Simply click on News Room to be taken to a list of recent press releases or on Press Pictures to be taken to the Kalmar photo gallery.

The caption for the photograph reads:

"The new E-One RTG from Kalmar features electric wheel turning and gantry drive. Gantry wheels are driven directly without the chain. All these features minimise the need for maintenance."

“The new E-One RTG from Kalmar employs a single-level trolley design allowing access to all components for ease of maintenance. Positive traction ensures that the trolley always runs parallel to the rails while a single hoist drum design also guarantees safe handling with eccentric loads and twinlifting.

Kalmar is a global provider of heavy duty materials handling equipment and services to ports, intermodal traffic, terminals and demanding industrial customers. Kalmar focuses on supplying handling solutions that enable customers to operate with a high level of efficiency and reliability. Every fourth container or trailer transfer at terminals around the world is handled by a Kalmar machine.

Kalmar provides a large range of value added services such as maintenance contracts and fleet management. Manufacturing plants are situated in Sweden (as is the head office), in Finland, the Netherlands, Estonia, Malaysia, China and the USA.

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