helical spiral bevel gear motor because spiral bevel gears do not have the offset, they have less sliding between your teeth and are more efficient than hypoids and generate less heat during operation. Also, among the main advantages of spiral bevel gears is the relatively large amount of tooth surface that is in mesh throughout their rotation. For this reason, spiral bevel gears are a perfect option for high acceleration, high torque applications.
Spiral bevel gears, like additional hypoid gears, are designed to be what’s called either right or left handed. A right hands spiral bevel equipment is defined as having the outer half of a tooth curved in the clockwise path at the midpoint of the tooth when it is viewed by searching at the face of the gear. For a left hand spiral bevel gear, the tooth curvature would be in a counterclockwise direction.
A equipment drive has three main functions: to increase torque from the driving equipment (engine) to the driven tools, to lessen the speed generated by the electric motor, and/or to improve the path of the rotating shafts. The connection of this equipment to the gear box can be achieved by the use of couplings, belts, chains, or through hollow shaft connections.
Speed and torque are inversely and proportionately related when power is held constant. Therefore, as velocity decreases, torque improves at the same ratio.
The heart of a gear drive is obviously the gears within it. Gears work in pairs, engaging one another to transmit power.
Spur gears transmit power through shafts that are parallel. The teeth of the spur gears are parallel to the shaft axis. This causes the gears to create radial reaction loads on the shaft, however, not axial loads. Spur gears have a tendency to become noisier than helical gears because they function with a single line of contact between teeth. While the tooth are rolling through mesh, they roll off of contact with one tooth and accelerate to contact with another tooth. This is unique of helical gears, that have several tooth in contact and transmit torque more smoothly.
Helical gears have teeth that are oriented at an angle to the shaft, unlike spur gears which are parallel. This causes several tooth to communicate during procedure and helical gears can handle holding more load than spur gears. Because of the load posting between teeth, this arrangement also allows helical gears to use smoother and quieter than spur gears. Helical gears produce a thrust load during operation which must be considered when they are used. Most enclosed gear drives make use of helical gears.
Double helical gears are a variation of helical gears where two helical faces are placed next to each other with a gap separating them. Each encounter has identical, but reverse, helix angles. Having a double helical group of gears eliminates thrust loads and will be offering the possibility of sustained tooth overlap and smoother operation. Just like the helical gear, double helical gears are commonly found in enclosed gear drives.
Herringbone gears are very like the double helical equipment, but they do not have a gap separating both helical faces. Herringbone gears are typically smaller compared to the comparable dual helical, 
and are ideally suited for high shock and vibration applications. Herringbone gearing isn’t used very often due to their manufacturing troubles and high cost.
While the spiral bevel gear is truly a hypoid gear, it is not always seen as one because it does not have an offset between the shafts.
One’s teeth on spiral bevel gears are curved and have one concave and one convex side. They also have a spiral position. The spiral angle of a spiral bevel gear is defined as the angle between your tooth trace and an component of the pitch cone, similar to the helix angle within helical gear teeth. In general, the spiral angle of a spiral bevel equipment is thought as the indicate spiral angle.