Right angle gearboxes are characterized by the fact that the drive shaft and the result shaft are arranged at an angle of 90 degrees. According to the gearbox type, the axes can intersect in a plane or cross on two parallel planes, which results within an axis offset.
Right angle gearboxes are realized with different types of gear teeth or a mixture of different gearing types. The most famous single-stage gearbox types are bevel and worm.
Due to the high one stage ratios and the reduced effectiveness level, worm gears can achieve a self-locking impact. With worm gears it is also possible to possess a hollow shaft as the drive shaft.
Bevel gearboxes come with various kinds of gearing. Bevel gearboxes with intersecting axes are understood using bevel gearing with directly, helical or spiral the teeth. Hypoid gearboxes have helical bevel gearing with which the axes cross with an axis offset. The bandwidth of technically sensible ratios with which the bevel gear stage could be realized is larger with hypoid gearboxes than with the classical bevel gear teeth.
Bevel gearboxes may also be combined with various other gearbox types. A frequent application in this respect may be the mixture with a planetary gearbox, whereby the planetary gearbox could be connected upstream or downstream. This outcomes in an array of overall multiplication factors and wide selection of uses in many industrial applications.
The efficiency degree of bevel gearboxes is normally less than that of coaxial spur gearboxes, particularly in comparison to planetary gearboxes. That is because the bevel equipment stage generates a higher degree of axial force and radial force, which has to be absorbed by suitable bearings. This increases the power loss, which is particularly notable in the drive stage of the gearbox.
The operating noise and the transmittable torques of classic bevel gearboxes are also less than with single spur equipment teeth. Hypoid gearboxes, on the other hand, are extremely noisy and can transmit huge amounts of torque, but a great deal of bearing load occurs in the bevel gear stage of the gearboxes.
In summarizing, a right angle gearbox is constantly used when the quantity of installation space in the application is bound, or an angular arrangement between the drive and the output is required by the application. They are also used in cases where in fact the input shaft must be hollow to be able to business lead through lines or make use of clamping sets.