Thermoplastic is a promising alternative bearing material for sustainable, lightweight, recyclable, and low-cost bearings, with reduced operational and maintenance costs and improved overall performance. The present paper explores the optimization of friction and wear (sliding and rolling) properties and temperature of high-density polyethylene (HDPE), ultra-high-density polyethylene (UHMWPE), and HDPE/UHMWPE under dry sliding and rolling conditions. This temperature behavior is essential for evaluating material performance in dynamic applications such as bearings and sliding components, where heat dissipation and friction are critical factors. It includes an evaluation of the role of the scratch mechanism on the wear resistance and surface performance. Samples were prepared with (circular form 25 mm, 4 mm thickness) and tested under conditions (385 rpm for the rolling abrasive machine) and (sliding speed: 0.278 m/s, sliding distance 500m for the sliding machine to evaluate its performance in bearing applications, particularly in light roller bearings such as printers. The results demonstrate that HDPE provides the best wear resistance and thermal stability, UHDPE shows higher wear and frictional heating despite its crystallinity, while the HDPE/UHMWPE exhibits intermediate wear performance but the lowest and most stable coefficient of friction due to the self-lubricating contribution of UHMWPE. The study provides a practical approach for enhancing polymer performance in printing machinery bearing applications.