SKF Canada Ltd.
Linear Motion
| Linear motion products from SKF combine the knowledge and efforts of linear drive systems (ball and roller screws) and linear guides and tables. |
| Linear drive systems typically use screws to transfer rotary into linear movements. This requirement is well achieved by our high efficiency driving products: miniature and large rolled ball screws, ground ball screws as well as different variations of roller screws. |
| The second part of Linear Motion are linear guides and tables. The key know-how here is to find the most suitable guiding solution providing the needed accuracy, stiffness and positioning at the appropriate cost. To provide the best fit for your guiding needs, our comprehensive range includes linear ball bearings, profile rail guides, precision rail guides and linear tables and slides. |
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| Thanks to decades of experience with manufacturing ball and roller screws and their continuous product and process development activities, SKF provides customers with precision screw solutions that fulfil the most demanding applications in terms of efficiency, precision, durability and value. SKF provides solutions for applications that require driving technology. Ball screws and roller screws convert rotary motion into linear motion, and vice-versa. |
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A traditional screw essentially consists of a steel shaft with trapezoidal thread and a bronze, metal or plastic nut. With this design, approximately 70% of the power is dissipated through the heat generated by friction at the sliding contact surfaces. Unlike traditional screws, high efficiency screws from SKF are fitted with rolling elements (balls or rollers) that transmit the power between the nut and the screw shaft. The rolling motion minimizes friction between the nut and the shaft, therefore: |
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• the torque and power of the motor required to drive an application are much lower; depending on the design and technology, ball and roller screw efficiency is greater than 80% • the wear rate is minimized • the life of our products is much longer than the life of traditional sliding screws, and can be determined using rolling fatigue calculation |
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Due to the high efficiency of this technology, ball and roller screws are back-driving. Thus, some applications require a brake to prevent the carriage from falling down under its own weight. Our comprehensive range of driving solutions includes precision rolled ball screws, ground ball screws and roller screws. Matching accessories for ball and roller screws such as nut flanges and support bearings are available. |
| To provide the best fit for all application demands in linear guidance, our range is composed of the following main components: |
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• Linear ball bearings • Profile rail guides • Precision rail guides |
| Combining these components with different drive systems creates a linear table range from non-driven tables up to complex driven positioning systems: |
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• Non-driven tables • Driven tables |
| Manufacturing units |
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The manufacturing units for SKF Linear guides and tables are located in Germany (Schweinfurt, Meckesheim) and Taiwan (Taipei). In Schweinfurt, the portfolio contains linear ball bearings and tables and a System House for final tailoring of all profile rail guides. The second manufacturing unit in Germany is located in Meckesheim. Their product range includes precision rail guides, miniature profile rail guides and slides. The profile rail guide LLT is produced in Taipei. |
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