In the present work an expert system has been developed for designing of dampers. This expert system takes inputs from user and it will calculate all dimensions, area of free mass, maximum heat dissipation, and the ratio of maximum heat dissipation to area of free mass. Then expert system will select most suitable damper and generates a script file and an AutoLISP file. By running the script file a 2D drawing and sectional view of the damper can be generated. The AutoLISP file can be run using AutoCAD to generate a 3D model for the damper. These drawings and the model can be used directly on the shop floor for manufacture of the dampers. This expert system reduces the design time of engineer and works as an assistant in designing of dampers. By saving time for initial designing of damper, the productivity of engineers can be increased. The present expert system can be used online for interaction between the customers and designers. © 2011 IEEE.