HYDRAULICS & PNEUMATICS


one, is a concern in laboratory research – but Watson-Marlow pumps provide contamination-free pumping. The process fluid contacts only the bore of a tube, eliminating the risk of the pump contaminating the fluid, or the fluid contaminating the pump.


• Versatile. Flexibility is important as different feed flow rates may be needed depending on the type and number of cassettes used. The availability of pumpheads that accept different tubing dimensions, and the broad flow rate range that can be delivered by each of these, ensures that Vivaflow can be configured for any lab-scale TFF application.


• Reliable performance. The Watson-Marlow 323 pump delivers precise and consistent flow rates, supporting optimal filtration process with Vivaflow. The instantly reversible motor allows for quick changes to the flow direction if needed, while smooth roller surfaces minimise tubing wear.


CAPABILITIES


A Watson-Marlow 323 pump is used with Vivaflow SU TFF solution for these capabilities: • Avoids contamination. Carryover, the contamination of a sample by the previous


• Gentle handling. LV isolation workflows tend to suffer from lower recoveries compared to other macromolecules like proteins, but by reducing shear stresses with the gentle pumping action, yields can be maximised to ensure sufficient material is available for downstream assays and analyses.


• Ease-of-use and low maintenance. The tool-free pumphead mounting, intuitive and reliable tube retention adjustment, and easy loading, contribute to the quick


FEATURE


set-up of Vivaflow SU without the need for process optimisation. It takes less than five minutes to prepare the entire system for ultrafiltration and diafiltration of up to 1L feed volumes. Sartorius also needed the pump to align with its branding and colours, which Watson- Marlow was able to provide. The company worked with Mario Zeizinger,


sales engineer OEM – Life Sciences in Germany, on the integration of the 323 pump with Vivaflow. Zeizinger said: “We had a great collaboration with Dr John Cashman to assist Sartorius with Vivaflow. Initially WMFTS provided Sartorius with sample pumps to help the company with its testing. Dependability, supply and flexibility of customising colours to align with Sartorius’ brand were all important, as was the avoidance of tube wearing and the risk of contamination wasting a sample. The compact size of the 323 is essential in laboratory environments which are often limited on space.” Two pumpheads (313 and 314) are available with the pump for use with Vivaflow SU, accepting tubes with a wall thickness of either 1.6 mm or 2.4 mm and compatible with a wide range of internal diameters.


Watson-Marlow Fluid Technology Solutions www.wmfts.com


Sartorius www.sartorius.com


eHYDRAULIC POWER MODULE ENABLES ELECTRIFICATION OF 200-TONNE CRAWLER CRANE


Danfoss Power Solutions’ Editron division has delivered its first eHydraulic Power Module to SANY for the electrification of a 200-tonne lattice- boom crawler crane. The eHydraulic system integrates a Danfoss Editron synchronous reluctance assisted permanent magnet motor with a Danfoss variable displacement axial piston pump to maximise performance and efficiency. Construction machinery worldwide emits


an estimated 400 million tonnes of carbon dioxide per year, according to IDTechEx. With the scale of global construction activity set to increase significantly in the decades to come, decarbonising heavy-duty machinery is vital to curbing greenhouse gas emissions. Leading crane manufacturer SANY is supporting these efforts and helping its customers achieve zero-emission construction sites through the electrification of its lattice- and telescopic- boom crawler cranes. The company is working to develop fully


electric versions of its higher capacity crawler cranes, having previously electrified its lower capacity models. Danfoss supplies Editron motors and D1P pumps for SANY’s 80- to 150-tonne cranes. For its 200-tonne platform, SANY opted for an integrated Danfoss eHydraulic Power Module to power the traction and work function systems. Comprising an Editron PMI375-T1100 motor and D1P 260-cc pump, the system is optimised


to deliver peak performance and maximise hydraulic system efficiency, extending machine runtime on a single charge. The full hydraulics system also includes a Danfoss Series 90 pump and PVG 128 valve. Additional benefits of the eHydraulic Power


Module include a compact package with mechanical advantages, simple installation, and high reliability. Supplying the electric motor and hydraulic pump as an integrated package eliminates the risk of noise, vibration and component damage that can arise when using a flexible coupling to join the components. It also simplifies and accelerates installation as there’s no need for the OEM to connect the components. CE marks and Danfoss’ global service network were also key reasons SANY chose to partner with Danfoss on the project. “Building a solution for SANY’s high-


capacity platform with the Danfoss integrated eHydraulic Power Module marks a milestone,” said Roy Chen, president, Editron division, Danfoss Power Solutions. “eHydraulics represents the future. Together with our Controls division, we have designed a system combining our D1P pump and Editron motor while tuning controls algorithms to maximise efficiency. We look forward to our continued collaboration with SANY and supporting their green journey.”


JUNE 2025 DESIGN SOLUTIONS 49 Adding to this, Henrik Jørgensen, president,


Controls division, Danfoss Power Solutions, said: “Conventional hydraulics still plays a role in the electrification of heavy machinery, particularly machines of this size. By integrating Danfoss’ advanced hydraulic solutions and electrification technology, we are empowering a smooth transition to more sustainable operations. Leveraging our eHydraulic solutions and our application know-how, we aspire to be the partner of choice for visionary OEMs like SANY.”


Danfoss www.danfoss.com/editron


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