Valley Irrigation centre drive gearbox assembly 34 RPM. Steel gears provide more strength than powdered metal. Valley-exclusive coating applied on internal surfaces to prevent corrosion and watertight seal between components. Finned aluminium housing that runs 11°C cooler than competitive motors with steel housing for increased motor life. 25° Tooth angles provides 40% greater load and wear resistance compared to competitive gearsets. Built-in crop guard over U-joint prevents crops from wrapping in or near shaft and oil seals. Case-hardened helical steel gears provide more consistent teeth meshing for smoother and quieter power transmission with greater torque. Strator can be replaced independent of rotor, and is held in place with corrosion-resistant stainless steel bolts for easy maintenance.