98D56103004000 is a precision aviation maintenance tool compliant with AS9100D quality standards and FAA/EASA regulations, dedicated to aircraft engine mechanical system maintenance.It functions as a high-precision bearing puller, specialized in disassembling and installing bearings of engine rotors, shafts and accessory gearboxes during MRO work. It provides stable, uniform pulling force, avoids damage to bearing races, shafts and mating surfaces, prevents deformation or scratch of precision components, ensures smooth disassembly and assembly, and safeguards the fit accuracy of bearing assemblies critical for high-speed rotation.Made of high-strength alloy steel with anti-wear treatment, it resists mechanical impact and corrosion, working stably at -55℃ to 260℃. Weighing 1.2kg, it features adjustable jaws, ergonomic force application design and precise positioning structure, enabling efficient, safe operation with reliable performance. It is a critical tool to guarantee bearing assembly integrity and overall engine rotational system safety and reliability.