That same feature, nevertheless, can also result in higher operating temperatures compared to bevel gearbox motors when from the same manufacturer. The increased heat results in lower performance and the parts ultimately wearing out.
Bevel gears are also used to spiral bevel helical gearbox transmit power between shafts, but are slightly different than worm gears. In cases like this, there are two intersecting shafts which can be arranged in various angles, although usually at a 90 level position like worm gearbox systems. They will offer superior efficiency above 90 percent and generates a nice rolling action and they offer the ability to reverse direction. It also produces less friction or heat than the spur gear. Due to the two shafts, however, they aren’t beneficial in high-torque applications compared to worm gearbox motors. Also, they are slightly larger and might not be the proper fit when space considerations are a aspect and heat is not an issue.
Straight bevel gears are generally used in relatively slow speed applications (significantly less than 2m/s circumferential velocity). They are generally not used when it’s necessary to transmit huge forces. Generally they are used in machine tool equipment, printing devices and differentials.
A worm is actually a toothed shaft that drives a toothed wheel. The complete system is named a worm gearbox and it is utilized to reduce quickness and/or transmit higher torque while changing path 90 degrees. Worm gearing is a sliding actions where the function pinion pushes or pulls the worm gear into actions. That sliding friction creates high temperature and lowers the effectiveness rating. Worm gears can be utilized in high-torque situations compared to other options. They certainly 
are a common option in conveyor systems since the gear, or toothed wheel, cannot move the worm. This enables the gearbox motor to continue operation regarding torque overload along with emergency stopping regarding a failing in the machine. It also enables worm gearing to take care of torque overloads.
Used, the right-hand spiral is mated with the left-hand spiral. As for their applications, they are generally used in automotive speed reducers and machine
Straight bevel gears are split into two groups: profile shifted Gleason type and non-profile shifted ones called regular type or Klingelnberg type. Over-all, the Gleason system is presently the hottest. Furthermore, the Ever- Company’s adoption of the tooth crowning method called Coniflex gears generates gears that tolerate minor assembly errors or shifting because of load and increases safety by eliminating stress focus on the edges of one’s teeth.