A helical gearbox is a type of power transmission gearbox that uses helical gears to transmit power between two shafts. The helical gears have teeth that are angled to the axis of rotation, which allows for smoother and quieter operation compared to spur gears. The helical gearbox consists of two or more helical gears that are meshed together to transmit power between the input and output shafts. The gears are mounted on parallel shafts and can be arranged in a variety of configurations, including single-stage or multi-stage designs. Helical gearboxes are also known for their high load capacity, which allows them to transmit high levels of torque and power. They are also available in a range of ratios, allowing them to achieve different output speeds and torque levels to suit the requirements of the application.