With the ball and roller screw for dozens of years of manufacturing experience, and continuous development of products and technology, SKF can provide precision screw solutions for customers to meet the requirements of the application efficiency, precision, durability and value of the most demanding. SKF provides solutions for applications requiring driver technology. The ball screw and the roller screw can turn the rotary motion into linear motion, or the linear motion into rotary motion.
In general, the conventional screw includes a steel shaft with a trapezoidal thread and a bronze, metal or plastic nut. As a result of this design, about 70% of the power due to sliding contact surface heat generated waste.
In contrast to the drive screw, a high efficiency screw assembly from the SKF is equipped with a rolling element (ball or roller) for transmitting the power between the nut and the screw shaft. Rolling motion minimizes friction between the nut and the shaft:
The torque and power required to drive the application is much lower, and the ball and roller screw efficiency is greater than 80% depending on the design and technology
Wear rate is also reduced to a minimum
Our product life is much higher than the traditional sliding screw, and can be used to determine the rolling fatigue.
Due to the high efficiency of the technology, the ball and roller screws are rear driven. Therefore, some applications require a brake to prevent the cage from falling due to its own weight.
Our complete range of drive solutions includes precision rolling ball screws, grinding ball screws and roller screws. We also provide matching accessories for these ball and roller screws, such as nuts, flanges, and supporting bearings. |
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