Dr. Erich TRETTER GmbH + Co.
About us
As a specialist for linear technology Dr. TRETTER GmbH has stood out for over 50 years due to high-quality products and technical know-how. We build on the trust of over 4.000 clients worldwide. Among those are special machine builders, medical engineers, measurement and test engineers, automotive suppliers, automation specialists as well as fixture builders and maintainers.
Our range of products includes directing systems in the field of linear technology, for example profile rail guides, round guides and roller guides. Furthermore, we offer drive systems such as ball screws, trapezoidal screws and complete axes. Our product portfolio also includes ball transfer units which are typically used in materials-handling technology. We also offer tolerance rings as a versatile connecting element, for instance in the automotive serial production.
Products & services
linear technology
Our range of products includes directing systems in the field of linear technology, for example profile rail guides, round guides and roller guides. Furthermore, we offer drive systems such as ball screws, trapezoidal screws and complete axes. Our product portfolio also includes ball transfer units which are typically used in materials-handling technology. We also offer tolerance rings as a versatile connecting element, for instance in the automotive serial production.
Shaft guidance systems
Shaft guidance systems for linear, short stroke and rotary movement
Torque-resistant ball bushings
Torque-resistant ball bushings for linear motion and simultaneous torque transmission Torque-resistant ball bushings or Ball splines are non-rotating round guides. In addition to transmitting linear motion, they can also transmit as well as support torques – even in narrow spaces. As opposed to conventional shaft guides, the ball spline is equipped with four axially parallel guiding groove races. The osculation of the balls in the raceways of bushing and grooved shaft, analogous to a profile rail guide, makes it possible to transmit significantly higher loads and torques compared to a conventional ball bushing. Thanks to the non-rotating bearing of the torque-resistant ball bushing it is not necessary to use, for instance, two parallel round guides or another form of support.
Rail guides
Rail guides by Dr. TRETTER GmbH – precise and made from heavy-duty materials Rail guides are established machine elements that have broken into the market many years ago. Our innovative and high-quality rail guides are made from high-tesile materials. They stand out due to their high load capacity, good rigidity, application flexibility and long service life. Our linear rail guides comply with customary, established measurements and included in the ISO standard. Our product line comprises a wide range of carriages in different sizes and models, available at short notice. The corresponding guide rails are cut to length requested by the customer.
Lead screws
Lead screws – in highest quality and custom made upon request Lead screws are elements used as a drive for linear motion. Ball screws and trapezoidal screw units are also part of the lead screws: For ball screws the force is transmitted by small balls. This motion has a high efficiency. Trapezoidal screw units function according the principle of dynamic friction. As a result this kind of motion has worse efficiency but also is a lower cost alternative.
Linear Units
Linear Units by Dr. TRETTER – heavy-duty yet flexible Dr. TRETTER offers linear units of the product lines MOVITEC® and MONOCARRIER® for a vast selection of solutions for positioning and handling tasks. The building components are versatile and easily integrable into the design of various applications, according to the modular concept. The linear units are equipped with aluminium profiles, some of them are also available in steel design. The linear axes are available in different designs and sizes. Dr. TRETTER offers linear units with toothed belt drive as well as ball screw drive. Optionally, all linear units can also be delivered without drive. All systems can be affiliated to customer specific electric drives of all common brands and thus be integrated into existing systems. The linear units can also be combined to multi-axis systems or with other MOVITEC®® products. A wide selection of additional processes and accessories make MOVITEC® linear units a flexible component for customized solutions
Ball transfer units
Ball transfer units by Dr. TRETTER – smooth-running, low-noise, dirt-resistant and long service life Ball transfer units are established design elements for conveyor systems, feeders, presses and assembly stations. They are useful little helpers – in the industry and everyday life we cannot imagine things without them. The ball transfers are applied in the following areas: Robotics Ball transfer tables at the airport Assembly lines Lifting platforms So-called airport or air cargo ball transfers are a further application.
Tolerance rings
Tolerance rings by Dr. TRETTER® – smart fixation of special applications Engineers have to face many technical challenges in every industry. For applications, several difficulties need to be overcome, for example: Thermal expansion, e.g. of light metal housings Reduction of vibration Reducing noise development Creating torque control Torque transmission Transmission of axial forces Levelling misalignments Bypassing large tolerances of the connecting components Our tolerance rings can help in all those matters and offer significant advantages compared to other connection types. Together with you, we want to meet the challenge and offer you the perfect solution. We support you during development, design your shaft-hub connection, and support you in the construction and testing phase. Thanks to our own production site in Switzerland, we can attend to all your requirements and special requests. Dr. TRETTER will make your innovative product development possible!