This thesis focuses on the development of a custom-designed lifting device for a tumblingblasting machine, aimed at improving operator ergonomics and increasing productionefficiency during the loading and unloading of parts. The project follows a structuredapproach based on the Double Diamond model, utilizing established product developmentmethodologies to ensure a systematic design process.The research study included a thorough current state analysis, closely observing the workflowto assess ergonomic risks using the Rapid Upper Limb Assessment (RULA) method and theSwedish Work Environment Authority’s manual handling assessment templates. In addition,a production flow study was conducted to evaluate potential improvements in productionefficiency, and a market analysis was carried out to identify existing solutions for similarproblems. Based on the findings from this research phase, a requirements specification wascreated to define the functional criteria for the lifting device.Concept generation was carried out through brainstorming sessions, resulting in severalinitial design concepts. These concepts were refined and evaluated using Pugh’s matrix,ultimately selecting the most promising concept for further development. This concept wasthen modeled in CAD using SolidWorks, resulting in two conceptual designs that fulfilled thedefined requirements.The proposed solutions share a common design principle, featuring a lifting device thatutilizes custom-built, two-part pallets. Parts are loaded into half of the pallet per cycle. Thepallets are positioned in the lifting device using a pallet truck, then elevated and tilted usingelectric actuators and lift columns. The pallet frame is then folded to tip the parts into thetumbling blaster. Once processing is complete, the pallet is lowered, and the blast conveyor isreversed to return the parts to the pallet. The operator then rotates the pallet 180 degrees toprocess the second half of the parts in the same manner.The second solution is a refinement of the initial concept, featuring a simpler design thatcombines lifting and tilting in a single motion using mechanical arms and tracks, reducing thenumber of moving parts and simplifying the overall structure.Post-design evaluations were conducted to ensure that both ergonomics and productionefficiency were improved by the proposed designs. The thesis concludes withrecommendations for further calculations and detailed design work to ensure themanufacturability and ergonomic viability of the lifting device, as well as additional measuresto minimize operational risks.