Roller Screws
What is a Roller Screw?
Creative Motion Control roller screws transfer an electric motor’s rotational motion into linear motion. The rolling elements consist of threaded rods which orbit around the shaft. These threads are in constant contact with the threads on the OD of the shaft and on the ID of the roller nut, resulting in incredible force density, very high load capacities, high speeds, and long life.
CMC Roller Screws vs ball screws
Due to the unique design of CMC’s planetary roller screws, they significantly outperform ball screws in essentially every category:
Load and Life
Due to the increase in the number of contact points compared to ball screws, roller screws have two to three times the dynamic load capacity in the same physical space. This translates to 15 to 25 times longer life. Additionally, the static load capacities are three to five times higher than ball screws.
Speed and Acceleration
Because there are no re-cycling ball bearings, roller screws can handle two to three times the rotational speeds of ball screws. CMC’s advanced roller design enables much higher acceleration rates as well.
Rigidity and Shock Tolerance
The increased contact points also enable much higher rigidity and tolerance to shock loads compared to ball screws.
Made in the USA
CMC roller screws are designed and manufactured by CMC in the US.