![Envelope toroidal worm reducer PWO](/Uploads/pro/Envelope-toroidal-worm-reducer-PWO.926.3-1.jpg)
![Envelope toroidal worm reducer PWO](/Uploads/pro/Envelope-toroidal-worm-reducer-PWO.926.3-1.jpg)
(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.