The Differential Roller Screw Enhanced and Adjusted for Further Ower

Hydraulics have solely been generated by power that is compressed and harnessed to move machinery used by many engineers and manufactures.  When using hydraulics, it requires an additional force to help condense the power for it to move. Although hydraulics is efficient and work well with mechanical devices, engineers and manufactures are considering the removal of the “hydraulic cylinder with an actuator and screw driven by an electric motor. “By replacing the hydraulics, they can focus on creating an electromechanical system which will no longer require the hydraulic aspect of it and be replace it with the roller screw.

The roller screw is an alternative that is highly effective with almost “two to five times the force of an equivalent ball screw.” The ball screw is effective but its cost to achieve the load sharing properties can become costly.  Schaeffler has created another alternative to form the costly process that the traditional roller screw goes for and is priced at a normal ball screw. The trick to the latest roller screw is all in the manufacturing of the design. Changing the way, the roller screw works creates not so much grinding and allows for the flow to generate more smoothly. Schaeffler’s PWG differential roller screw—whose spindle and planets are manufactured using forming, instead of traditional grinding, methods—is characterized by a very high power density.”

The PWG power is formed within the design its self to create its high-power density. The power that allows for the PWG to have a “high axial load carrying capacity “is generated between to contact points which can be found in between the planets and spindle. It is used in many applications that are created in volume such as automotive clutches, sheet metal bending for plastic-injection-molding machines, locking cylinders for plastic-injection-molding machines and rivet cutting products.

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