Founded in 1951, Grob Inc. is a family-owned and operated company that has innovated industrial cold forming by developing the “Grob Rolling” method. This technique allows us to create quality cold formed products that provide customers numerous advantages over traditional hobbing, including higher strength, more durability, and a better surface finish.


Grob Inc. supplies a variety of cold formed products, including spline shafts, standard and custom timing belt pulleys, flanged bushings, broached sleeves, heat exchanger tubes and drums, and spur gears.We engineer excellence into every cold formed product, delivering stronger and more economical parts to end users. Learn more about the Grob Cold Rolling method, our cold formed products, the benefits of our cold forming process, and the custom machining services we offer.