Hi Ken2,
thank you for the info, I wasn't aware of this categorization (AGMA).
Hi river_rat and Molakule,
this is about a reducer, that was designed by our class when I was a student. (if the design was compact and robust, the teacher gave you the go ahead to manufacture what you had designed..). It was a nice way to get in touch with the calculation sheets, as it was quick and gave you a sense of the numbers, before you proceeded with using FEMs or other methods, it helped you learn the basics.
it consists of 5 gears, with a b angle of 20 degrees, the output rotates in the same manner as the input, both clockwise, and the input power is 10 kilowatts, that is about 13.5 HP.
The input is 400 rpm, and the output is 50 rpm.
It is constantly connected to a brake, so no variations of the forces on the teeth.
The_Eric,
many thanks for the very useful link.