Unlike Spur gears, Helical gears and Helical Gearbox both have the capacity to conduct a smooth operation. The teeth on a helical gear cut at an angle to the face of the gear. So, during the process when two of the teeth start to engage, the contact is gradual- starting at one end of the tooth and maintaining contact as the gear rotates into full engagement. When it comes to transmissions, helical is the most commonly used gears and it even generates large amounts of thrust.
The angled teeth engage more gradually than do spur gear teeth so that they can run more smoothly.
Helical gears, as well as helical gearboxes, are highly durable and ideal for high load applications.
It has the capacity to transmit motion and power between either parallel or right angle shafts.