Planar double enveloping toroidal worm reducer PWO

(1) PWU type—the plane double enveloping toroidal worm reducer under the worm wheel;

(2) PWO type—the plane double enveloping toroidal worm reducer above the worm gear;

(3) PWS type—the double enveloping toroidal worm reducer of the worm on the side plane of the worm wheel.