Even the gearing is beefy. Forgoing the typical worm gears, they used system of toothed gears that run in an oil bath.
Goodell Pratt Model 485. This was their "tool box grinder", their smallest model and meant to be portable but it's built like a tank and weighs almost 11 lbs. With a 22:1 ratio this thing spins like an electric with very little effort and is almost as loud.
