Speed variator with coaxial input and output shafts - has friction discs on intermediate spheres with variable axes retained by thrust washers
The speed variator has an input shaft which drives a friction disc against spheres. The rotation of the spheres drives a second disc connecte to an output shaft. Greasing passages are bored in the shafts to allow lubrication of the shaft support bearings. Thrust washers transmit pressure through the friction discs against the spheres at a preset value. Each sphere rotates about a spindle and speed variation is achieved by angular displacement of the spindle housing by a worm screw.