The improved design of zQA type reducer based on ZQ type reducer of gear, in order to improve the bearing capacity, and convenient to replace ZQ type reducer, in the appearance and installation dimensions of shaft end of the same circumstances, change gear shaft gear shaft material: 420CrMo, a big gear to 35CrMo. Quenching and tempering hardness of gear shaft is 291 ~ 323HB, 255 ~ 286HB big gear.

Transmission ratio:
The actual transmission ZQA type reducer than is=25.02 and ZQ type reducer is=23.34 different from the same. (because the actual transmission ZQ type than the deviations from the nominal transmission ratio less than 4%)