This paper investigates the surface durability of 3D-printed polymer gears, focusing on their ability to function without lubrication. The study evaluates the wear resistance of gears made from four materials—PA (polyamide), PLA (polylactic acid), ABS (acrylonitrile butadiene styrene), and PP (photopolymer)—using two 3D printing technologies: FDM (fused deposition modeling) and SLA (stereolithography). The experimental setup includes a mechatronic system with adjustable axial distances, a loading system, an electric motor, and a command-and-control system. The gears were tested for wear by measuring the total radial composite deviation (Fi") and other parameters using the ZWP 06 FRENCO machine and a 3D scanner (ATOS CORE 135). The results show that PA and PP gears failed to meet structural integrity standards, while PLA gears exhibited superior resistance to abrasive wear compared to ABS gears. The study concludes that PLA gears have the best wear behavior, followed by ABS, with PA showing good resistance but structural limitations. The findings highlight the need for further research to establish standards for 3D-printed gears in various applications.This paper investigates the surface durability of 3D-printed polymer gears, focusing on their ability to function without lubrication. The study evaluates the wear resistance of gears made from four materials—PA (polyamide), PLA (polylactic acid), ABS (acrylonitrile butadiene styrene), and PP (photopolymer)—using two 3D printing technologies: FDM (fused deposition modeling) and SLA (stereolithography). The experimental setup includes a mechatronic system with adjustable axial distances, a loading system, an electric motor, and a command-and-control system. The gears were tested for wear by measuring the total radial composite deviation (Fi") and other parameters using the ZWP 06 FRENCO machine and a 3D scanner (ATOS CORE 135). The results show that PA and PP gears failed to meet structural integrity standards, while PLA gears exhibited superior resistance to abrasive wear compared to ABS gears. The study concludes that PLA gears have the best wear behavior, followed by ABS, with PA showing good resistance but structural limitations. The findings highlight the need for further research to establish standards for 3D-printed gears in various applications.