We’ve got BIG News! As of Jan. 1, 2024, all support for Elliott Tools will transition to Elliott. This includes sales and service support for all metal finishing, burnishing, recessing and mechanical joining tools previously sold by Monaghan. This will open the door for us to focus in on our goal of being your “cutting tool expert”. 

Case Study: Burnishing a Gate Valve Stem

Summary Of Results


A customer of ours was manufacturing gate valve stems made of Inconel alloy 718 using a Takisawa CNC Lathe. The valve stems were 11.81” (300mm) long, had a diameter of 1” (25.527mm), and required a finish of 16 Ra microinch (0.4 Ra) or better on the main diameter of the stem.
Before contacting us, they had to transfer the part to a CNC grinding machine to achieve the required surface finish which was very time consuming.
Turning Operation prior to burnishing:
Roller burnishing tool on a shaft


After we assessed their operation, we suggested they use a S2327-00M Single Roll Burnishing Tool made by Elliott Tool Technologies. Here were the statistics after using this burnishing tool:
Elliott roller burnishing tool


The single roll burnishing tool achieved a finish of 6-8 Ra microinch (0.16-0.20 Ra). It also allowed the shaft to be finished in one machine, eliminating the costly grinding process. They also saved 30 minutes on each part they made using our burnishing solution.