Harleman Manufacturing, LLC 117 South St. James , El Dorado Springs , Missouri 64744 USA About Solutions products services Publications videos Downloads Companies Harleman Manufacturing, LLC Products Model 337 - Auger Drive Model 337 - Auger Drive 0 Share Double Reduction Planetary - 16:88:1 Ratio. Hydraulic Recommendations - GPM 25-32. Recommended Augers - 6 inches to 36 inches. Torque - 6,000 Ft. Pounds. Mounting - Quick Attach. PSI - 3300. Customer reviews No reviews were found for Model 337 - Auger Drive. Be the first to review! Add your review Publish your review Great! review successfully added!