Profile: T. R. Goldsmith & Son, Inc. is a distributor of mold making supplies and die supplies. Our main products include admiral tool, hydraulic motors, ceramic stones, finger springs, and turret tapping tools. Lamina hydraulic motors have a main shaft that can be easily adapted by use of a chuck or collect to hold the tools for rotary machining operation, such as drilling, boring, and reaming. The unusual small size of these hydraulic motors makes them a logical choice for many applications. The hydraulic motors have five fluid chambers, the inherit four-to-one ratio provides twenty fluid power cycles for each revolution of the output shaft.