{"data":{"news":{"items":[{"title":"eRG 21 T hybrid: RTG’s new pile driver reduces emissions by up to 68%","date":"2025-08-19 08:37:57","id":5972,"author":"","blurb":"","blurb_image_uid":"https://dxfpracgmlczp.cloudfront.net/2025/08/1755346469391_erg-21-t-hybrid-rtg-bauma-2025-bauer-maschinen-3 copy.jpg","blurb_expanded_image_uid":null,"article":"\n\t\n\n\n

One of the highlights at Bauer booth during bauma 2025 was the eRG 21 T hybrid pile driver from RTG Rammtechnik. The machine’s drive system combines the power of a 430 kW diesel engine with the precision of an electric motor delivering up to 88 kW of additional power (standard power supply: 125 A / 400 V).

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This hybrid technology ensures a constant high level of efficiency, even under strict emission regulations. Thanks to the support of the electric motor, the diesel engine operates with less power, which not only reduces noise significantly but also minimises fuel consumption. As a result, CO2 emissions can be cut by up to 68%.

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The system seamlessly adjusts between diesel and electric power based on demand, optimising performance for various applications. When lower power is required, the machine can even operate in fully electro-hydraulic mode. Meanwhile, full power is available for demanding piling tasks.

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The standard equipment for the eRG 21 T hybrid includes the Bauer comfort operator cabin and a modern touchscreen with B-Tronic control. Integrated power management optimises the use of the hybrid drive. The temperature-regulated fan control system with fully automatic operation has been specially developed for vibrator operation. Additionally, the machine features a basic remote control as well as retractable side flaps for automatic noise protection.

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A variety of optional features allow customisation for specific requirements. An arctic kit or the extended arctic kit plus, for example, enable operation under extreme weather conditions. An optional second swivelling mechanism increases the swivel braking torque, improving machine control. The energy-efficient power (EEP) system with Eco Mode further helps reduce energy consumption. An extended remote control (operation) and automatic coupling system for the base machine (ACS I) and all attachments (ACS II) are also available.

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The hybrid drive has already demonstrated its reliability with the eRG 19 T hybrid, the ‘smaller sister’ of the eRG 21 T hybrid. Last year, it was used successfully at the Friedrich-Krause-Ufer site in Berlin, Germany. During the special foundation engineering work for a new office and commercial building, the machine executed vibration driving precisely based on a grid pattern, laying the groundwork for an excavation pit with a stable sealing horizon.

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All images: Bauer Group

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The Vermeer PD10R pile driver is ideal for use on solar farm construction projects. It can be equipped with automated machine positioning technology, resulting in higher productivity throughout the construction process.

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With the point-to-point (PTP) system, the PD10R can reposition itself automatically using onboard GPS. After driving a pile, the machine operator presses a button and the remote-control operated PD10R travels and aligns itself to drive the next pile. [Scroll down to watch a video of PD10R in action.]

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This automation technology helps ease the pile-driving process by reducing the number of operational steps involved with moving the machine during construction of solar farms.

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“Hundreds of piles need to be driven before racking is assembled and solar panels can be placed, and exact pile positioning is crucial,” explained Ed Savage, product manager at Vermeer. “The optional point-to-point technology package for the PD10R further enhances existing PD10R auto-plumb and auto-target features.

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“Now, with the push of a button, pile driver operators can allow the PD10R to automatically track to the next pile location. When using this automation technology, operator input is reduced by eight steps, which also helps optimise new operator training.”

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Vermeer highlighted that, while the technology incorporated into its pile drivers significantly minimises the steps involved in driving piles on solar projects, the PTP system takes things to another level.

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The PTP system works by syncing GPS coordinates with a digital project map of identified pile sites. After a pile is installed, the automation technology recognises the next waypoint (pile location) on the map, then moves and positions itself into alignment.

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In addition, the PD10R PTP model is equipped with bump bars on each end that disengage machine movement when it encounters an obstacle.

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