MR+H - combination of worm and helical gears

The use of the first gear stage (HM cylindrical gear) has many positive aspects:

- enables to obtain high efficiency of the set;
- enables the creation of large gear ratios thanks to the use of a 2-stage or 3-stage gear transmission;
- enables the use of a worm gear with the largest possible module;
- prevents heating of the worm gear;
- allows the use of a smaller mechanical size of the engine, which reduces the weight of the set.