Head Housing (for speed control)
Planets
Dish Springs
Input Shaft
Needle Bearing
Inner Suns
Input Flange
Outer Ring
Housing
Speed control head housing construction
(b) Output shaft at maximum speed
2. Speed variation Speed adjustment is achieved by modifying the gap between the outer ring (35) and the outer ring with cam (32), and changing the radius of the planet’s orbital revolution. The outer ring with cam has a special shape (32), holding the ball retainer (33) in place. Turning the speed control shaft (80a) acts through the speed control nut (80e) and the speed control bolt (37) to move the outer ring with cam in the direction of rotation. The cam moves only in the direction of the shaft, and changes the gap .
3. Power transmission Power is transmitted via a traction drive through an oil membrane that forms between the ground contact surfaces. The low surface pressure on the contact surfaces assures long life. Planet positioning is the secret to achieving strength in this compact design.
D-52
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