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Steinmeyer STA Precision Ball Screw Drives
Steinmeyer STA Precision Ball Screw Drives
Steinmeyer Ball Screws are known for their precision, quality, and reliability, with a history dating back to 1920. The company specializes in ball screws used in various applications, including machinery and aerospace.
Founded in 1920, Steinmeyer initially focused on micrometers and began producing ball screws in the 1960s. The company has expanded its facilities in Germany.
Steinmeyer emphasizes tradition, quality, and innovation, focusing on customer requirements and continuous improvement. Their products meet high precision standards, certified under EN 9001 and EN 9100.
Ball screws are used in machinery, optical instruments, medical engineering, and aerospace, designed for dynamic, backlash-free power transmission.
The catalog includes miniature, large, heavy-duty, and specialized ball screws for aerospace applications, with custom designs available.
Details include precision, lead accuracy, friction torque, geometric tolerances, preload, rigidity, service life calculations, and lubrication.
Explains precision requirements, including lead accuracy and friction torque, referencing DIN, ISO, and JIS standards.
Ball screws are categorized into accuracy classes (1, 3, 5, 7, and 10) defining lead accuracy and other quality criteria.
Outlines tolerance of friction torque for preloaded ball screws, influenced by accuracy class and preload value.
Discusses general geometric tolerances, including run-out and perpendicularity, with specific tolerance values.
Recommendations for maintaining mounting tolerances to ensure proper operation and longevity.
Discusses different nut types and their preload, highlighting the impact on efficiency and suitability for long screws.
Emphasizes the cost-effectiveness and compact design of ball nuts, with preload crucial for eliminating play and increasing rigidity.
Preload can be achieved through different methods, with Steinmeyer using a gothic arch profile allowing both preload types.
Maintains constant preload regardless of wear, ensuring no play and low friction.
Rigidity impacts positioning accuracy and dynamic behavior, with preload increasing rigidity.
Ball screw life is determined by material fatigue, with preload affecting internal forces.
Includes considerations for preload settings, rigidity calculations, and the impact of preload on service life.
Discusses calculation of modified loads for nuts with 4-point contact and duty cycle of machine tools.
Equivalent load is calculated based on dynamic load capacity and fatigue life, with emphasis on proper lubrication.
Explains dynamic load capacity and reliability percentages, comparing ANSI and ISO/DIN standards.
Identifies failure modes due to overload and provides a simple buckling analysis.
Defines critical speed as the first resonant frequency of the rotating shaft, advising operation below 80% of critical speed.
Mentions Xi-Plus technology for improved running characteristics by reducing noise and vibration.
Discusses dynamics of ball screws, focusing on critical speed, pre-tensioning, and maximum speed limitations.
Influenced by mass forces on balls, internal construction, and ball diameter, with DN value providing a preliminary speed limit.
Outlines different journal designs and importance of pre-tensioning for thermal expansion compensation.
Guidelines for selecting appropriate bearings, emphasizing compatibility with lubrication methods and speed ratings.
Choice between grease and oil lubrication depends on conditions, with recommendations for preventing contamination.
Study shows some greases offer moderate wear protection, while oils with high-pressure additives perform better.
Discusses a test for lubricants used in ball screws, focusing on lubrication film build-up and wear.
Ball screws require sufficient lubrication to form a fluid film, with high viscosity oils recommended.
Requires an oil port and wipers, with recommendations for oil quantities and viscosities.
Re-lubrication should use compatible grease, with intervals varying based on wiper type.
Guidelines for grease application, including recommended greases for various conditions.
Ball screws require a ball return system to recirculate balls, affecting maximum speed.
Lists materials used for ball screw components, with designations for aerospace and general purposes.
Lists materials and outlines processes certified by SAE and NADCAP, including heat treatment and surface treatment.
Defines key technical terms, including shaft cross-section, thermal expansion coefficient, and load capacities.
Explains the numbering system for ball screws, detailing nut types and specifications.
Used in precision applications, with optiSLITE technology improving running characteristics.
Provides detailed technical data for various nut and screw types, including dimensions and load ratings.
Includes specifications for nut types, preload, friction, and screw types, with guidance on selection and customization.
Steinmeyer has extensive experience in ball screw drives, with specialization in aerospace applications.
Includes built-to-print and built-to-spec production, with engineering services for design and development support.
Includes ball screws for flap actuators, electromechanical actuators, brake actuators, and aerospace applications.
Mass-balanced design for higher speeds, with challenges in lubrication complexity.
Characterized by high precision and long service life, used in high-precision positioning units.
August Steinmeyer GmbH & Co. KG, Riedstraße 7, 72458 Albstadt, Germany. Phone: +49 (0) 7431 1288-0, Email: [email protected], Website: www.steinmeyer.com
Catalog excerpts
Steinmeyer Ball Screws. Precision, quality and reliability.
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Welcome to where precision is.
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Welcome to Steinmeyer – Your reliable partner for ball screws. Ball screws in all sorts of designs. Reliable and individual counseling. The optimal implementation of your wishes are Innovation, precision, quality, reliability and dura- A skilled contact person at Steinmeyer is at your our main focus. The expertise of our technical bility have distinguished our ball screws for disposal before and after your purchase. advice combined with numerous standard and decades. First-class materials and sophis- special solutions offers many options for your ticated manufacturing technology are always Whether...
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Welcome to where precision is. History. Production of ball screws of a factory plant which occupies some 8 acres of land today. The original house still exists, but has since been converted into office and meeting The Steinmeyer company was founded by Mr. August Steinmeyer in 1920. One year later, in 1921, he decided to specialize in micrometers, Beginning in the late 1960‘s, ball screws have which was to become the product range for been manufactured at the Albstadt factory. About which the small company was soon to be recog- 10 years later, this new product line outgrew the nized in the domestic...
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Our Philosophy. Tradition, quality and innovation. proved processes over and over again – with Steinmeyer is committed to being at the cutting Modern machine design places high demands mance and life figures from its linear drives. not the slightest deviation. From raw material edge – always. to the finished component to its maintenance during the entire life cycle, from design and de- on precision and reliability of its linear drives. Ball screws, which have become an indispens- Our standard: Highest quality. velopment to qualification testing – everything must be done in a well controlled environment...
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Welcome to where precision is. Areas of application. Precision where it counts. chatronic applications. Such applications require shafts and nuts are matched to »nearly backlash the lowest possible friction. free« they often perform better compared to other drive types. Today ball screws are used in a widely varying range of applications. Precision ball screws from Ball screws quite often have to survive special 20 to over 100 mm in diameter are an indis- environments such as Ultra High Vacuum in elec- Applications in aerospace have quite different pensable element for positioning and infeed...
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Certification. Certified processes are a matter of course. We achieve high precision products through our high quality standards. To ensure the comprehensive quality requirements by certified processes under quality management systems.
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Welcome to where precision is. Precision at a glance. Technology Miniature ball screws diameter 3 - 16 mm Large ball screws diameter 16 - 125 mm Heavy duty ball screws ultra thrust diameter 32 - 160 mm Ball screws for aerospace applications Rotating nuts Precision lead screws This catalog contains the product range of Stein- cuits are possible – as a custom unit. meyer ball screws and is divided into several product Please contact us for details. categories. Because it is not possible to show all special forms and modifications please contact us to review your requirements. And please note that...
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A summary of all important criteria for the selection of an applicable ball screw including service life calculations, assembly recommendations, lubrication and maintenance. Standard program for diameter 3 to 16 mm with several nut designs and standard shafts. The product range for machine industry. Standard nuts according to DIN / ISO, rotating nuts to enable assembling bearings directly. Ball screws are always made according to a drawing. Special design with extra large balls and matched ball return system. Ball screws are always made An overview of particular solutions, processes and materials...
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T E C H N I C A L I N F O R M AT I O N The following chapters only show a small portion of the wide field of applications for ball screws. In order to meet all the technical and commercial demands for such a wide variety of different tasks, a deep understanding of the technology of ball screws is absolutely necessary. We have collected extensive information about ball screws in this section of this catalogue and hope that you will find it useful. Please be aware that although we edited this information as carefully as possible, we cannot be held responsible for missing or incorrect information....
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PRECISION (LEAD ERROR, FRICTION TORQUE, CRITICAL TOLERANCES) Under the headline „precision" DIN / ISO standards are explained as they apply to ball screws, how accuracies are defined, and the acceptance or specification criteria derived from these standards. Lead accuracy Friction torque Roundness, concentricity and squareness of relevant surfaces In general, all acceptance criteria should be reviewed and agreed upon between Steinmeyer and our customer. This is especially relevant for those applications where special demands are required, for example a lead accuracy of class 5 but friction torque...
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Positioning ball screws Transport ball screws The DIN standard differentiates between positioning ball screws and transport ball screws. Positioning ball screws are normally used in high-precision applications (like machine tool) and are usually equipped with a ground ball thread. Transport ball screws are predominantly used for travelling and moving applications. Typical applications are axes for handling systems. Ball thread of such screws is usually rolled or whirled. Per DIN standard the tolerance classes for positioning ball screws are described as "P" while the transport ball screws classes...
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Lead error fluctuation over entire travel Accuracy class [¹ n/a for rolled and whirled ball screws] TECHNICAL TIP The fluctuation of the lead error is defined by two lines parallel to the line representing the average lead error, which include the entire lead error graph. The lead error fluctuation is applicable to precision ground positioning screws in accuracy classes 0 - 5 only. It does not apply to general purpose screws which are typically either rolled or whirled in classes 5 - 10. Lead error fluctuation per 300 mm The variation over 300 mm is the most common definition. However it is also...
Open the catalog to page 14All Steinmeyer Holding GmbH catalogs and technical brochures
Ball Screws for Aerospace2 Pages
- Positioning table
- Measuring machine
- Calibration system
- Translation stage
- Motorized positioning table
- Precision positioning table
- Technology positioning stage
- Automatic measurement system
- Single-axis positioning stage
- Precision calibration equipment
- Manually-operated positioning stage
- 2-axis positioning table
- Compact positioning table
- High-precision measurement system
- Digital calibrator
- XY positioning table
- Multi-axis positioning table
- Touch probe
- Rotary positioning table