Spur gear tooth geometry optimization, shaft torsional-bending calculations, and bearing fatigue life verification adhering to AGMA 2001-D04 and ISO 6336 standards.
Gear tooth strength was evaluated using Lewis and AGMA bending stress methods, while surface durability was assessed through Hertzian contact stress considerations. The gearbox utilizes a pair of spur gears, providing direct and reliable power transmission with a simple and robust configuration. The spur gear arrangement eliminates the axial thrust generated by helical gearing, simplifying shaft and bearing loading while maintaining effective torque transmission.