I am putting a model 37 back into service.? About 40 years of its life was just sitting at my dad's garage.? He had modified it to run off a 220v 1PH motor tied to a truck 4 spd transmision by dual v belts.? Then dual v-belts driving the flat-belt cone pulley, 2nd from the bull-gear.? I have used it for very minor work over the last 30 years and am now going through it since I am retired.? I want to use carbide inserts and need more RPM.? I just mounted a digital tach on it and in high gear I am only getting 318 RPM.? The books show just under 600 RPM for the max.? A gunsmith owned it previously and when I pulled the spindle caps off found bronze bushings which I believe he made.? I pulled the caps off to drill and tap for drip oilers.? I have ordered a pulley for the motor which will bring it to about 1000 RPM max.? Am I exceeding the capability of these bearings/drivetrain?? I have attached photos of the bearings.
Rick Swineford
