Miki Pulley’s Step-Flex Couplings improve ball screw performance while solving resonance and vibration problems. The Step-Flex is an altogether new class of shaft coupling. The Step-Flex coupling design has a two-part elastomer element combination. This assembly dampens vibration caused by the actuator carrier when struggling to find its home position by making small adjustments in […]
Step-Flex couplings from Miki Pulley improve ball screw performance
Miki Pulley’s Step-Flex couplings improve ball screw performance while solving resonance and vibration problems. The Step-Flex is an altogether new class of shaft coupling. The coupling design has a two-part elastomer element combination. This assembly dampens vibration caused by the actuator carrier when struggling to find its home position by making small adjustments in rapid […]
Closed-loop linear actuator operates at high torque for high acceleration applications
A new closed-loop linear actuator from Applied Motion Products offers greater acceleration rates, shorter move times and higher throughput than conventional step motor-based linear actuators. Creating peak torques up to 50% higher than holding torque, TBSM11 Linear Actuators accelerate and decelerate faster, making them ideal for high throughput processes that require linear actuators to start […]
Couplings in both single and double flex models
ServoClass Couplings in both Single and Double Flex models are now available with hubs for k6 and j6 shafts. These couplings from Zero-Max provide high torsional stiffness and are designed to handle high speed reversing loads and precise positioning requirements in today’s demanding servomotor applications. The Single and Double Flex ServoClass models handle bore diameters […]
Couplings from Zero-Max now available with hubs for k6 and j6 shafts
ServoClass couplings in both Single and Double Flex models are now available with hubs for k6 and j6 shafts. These couplings from Zero-Max provide high torsional stiffness and are designed to handle high speed reversing loads and precise positioning requirements in today’s demanding servomotor applications. The Single and Double Flex ServoClass models handle bore diameters […]
Motion Trends: Better performing, more customized ball screws
Slow but steady improvements continue with ball screw technology. For instance, developments in manufacturing and materials have improved ball screw performance so that the most recent generation of ball screws have greater load densities than before, leading to high load capacities in smaller packages. A trend that continues is the adoption of ball screws into […]
New high-performance miniature ball screws from SKF
The new SP Series high-performance miniature ball screws from SKF Motion Technologies have been optimized to deliver precise positioning, excellent repeatability, and smooth-running and quiet linear actuation. Their advanced internal ball recirculation system and thread design additionally enable higher speed capabilities and longer operating life compared with conventional rolled ball screws. These small packages ultimately […]
SKF Motion Technologies Inc. Releases SP Series Miniature Ball Screws
SKF Motion Technologies Inc. has created an internal ball recirculation system and thread design that will cause the ball screws to have higher speed capabilities and longer operating life. They were made in order to extend mini machine reliability, increase speed and output, and reduce noise for a wide range of medical, laboratory, automation, and…
CAD files and more, on the fly
More companies are developing apps for engineers to use with their smartphones. In some situations, these apps speed the engineering design process. One of the more recent app announcements comes from NB Corporation of America, which has launched NB Linear Mobile, a free app for its line of linear products. Available for iOS and Android devices, this app…
12 sizing resources for linear guides and screws
Most linear guide and screw manufacturers offer online tools to help engineers with product sizing and selection. But these tools can sometimes be more in-depth – or alternatively, more simplified – than is needed at the current design or selection phase. In these cases, the easiest and fastest solution is to do the sizing yourself. […]
What is a planetary roller screw?
Screw drives are some of the most common methods of mechanical linear actuation. And planetary roller screws are one of several screw types, including lead screws and ball screws. Planetary roller screws use threaded rollers that are toothed to mesh with geared rings at each end of a nut. The rollers spin on their axes […]
High speed linear actuators: What qualifies them as high speed?
Like many terms used in the linear motion industry – “heavy duty,” “miniature,” and “corrosion-resistant,” to name a few – there is no industry standard that specifies what constitutes a “high speed” linear actuator. Nevertheless, there are some general guidelines that manufacturers follow when classifying and marketing their actuators as high speed. These guidelines are […]
Servo couplings: Stiffness, damping, hunting, and stabilization considerations
Here we address considerations when specifying servo couplings to satisfy servo requirements — ever-evolving specifications that become more demanding all the time. By Tetsuya Niwa • Director of product planning and development Kei Yamada • Product Manager — Product planning and development Hiroki Goto • engineering specialist Paulo Castelo • Technical solutions supervisor • NBK America […]
What are monolithic XY tables?
XY tables are constructed from two linear axes – typically driven by linear motors, ball screws, or lead screws – that are mounted perpendicular to each other in either a stacked or a monolithic design. Stacked XY tables consist of two complete, separate axes mounted together, much the same way they are configured in a […]
7 linear motion principles that electrical engineers should know
Electrical and controls engineers are normally tasked with selecting and integrating the electronic components that go into a motion control system, such as motors, drives, controls, feedback devices, and HMIs. In doing so, their primary concerns tend to be on making the various components communicate with each other, working through complex equations for drive tuning, […]
Servomotor couplings: Stiffness, damping, hunting, and stabilization considerations
Here we address considerations when specifying a servomotor coupling to satisfy servo requirements — ever-evolving specifications that become more demanding all the time. Tetsuya Niwa • Director of product planning and development Kei Yamada • Product Manager — Product planning and development Hiroki Goto • engineering specialist Paulo Castelo • Technical solutions supervisor Edited by […]
What makes miniature ball screws unique?
Ball screws are used in a wide variety of applications, but some of the most challenging are those on the extreme ends of the performance spectrum – from large diameter, large lead screws for machine tools, to screws with small diameters and very fine leads for optical and medical applications. For very small, high-precision movements, […]
Roller screw actuators: Design and applications
Electromechanical actuators come in many varieties, with common drive mechanisms being lead screws, ball screws, and roller screws. When a designer or user wants to transition from hydraulics or pneumatics to electromechanical motion, roller screw actuators are usually the best choice. They provide comparable performance characteristics to hydraulics (high force) and pneumatics (high speed), in […]
Metric Size Aluminum Mounting Clamps with Swivel Ball Joint
J.W. Winco, Inc., a supplier of standard industrial machine components, announced it now offers GN 784 Metric Size, Aluminum Mounting Clamps with Swivel Ball Joint. The GN 784 aluminum mounting clamps, which are RoHS compliant, allow precise and variable adjustment of the ball pivot within the rotation range. This is a particular advantage when adjusting…
Environmental challenges for linear bearings, and how to address them
“Environment” is a difficult parameter to quantify when selecting recirculating linear bearings or ball screws. Unlike load, stroke, or speed, there are no programs or calculations that help you choose the right bearing based on environmental factors. But environmental conditions can have a big impact on the performance of linear bearings and ball screws. Because these components operate […]
Klüber Lubrication introduces customized lubricant for actuators
Klüber Lubrication, a worldwide manufacturer of specialty lubricants, has introduced Klübersynth BR 46-32 F and Klübersynth BR 46-82, a series of specialty lubricants for the lifetime lubrication of actuators, which match the service life requirements of the automotive industry. Actuators are power transmission elements that convert electrical signals into mechanical movement. However, for dependable actuator […]
THK’s latest guide for linear motion users — Online resource center
Linear-motion manufacturer THK America Inc. has developed an online Resource Center packed with the latest industry insight and information. Built into the navigation of thk.com, searchable content consists of industry relevant white papers, briefs, case studies, articles, infographics, videos, e-books and web content. Subjects within the site cover a range of topics, including The Value […]
Self-Retaining Ball Plungers Eliminate a Machining Step
Easily and securely installed by hand in an ordinary drill hole, self-retaining ball plungers from Carr Lane Mfg. Co. have a flexible design, and compensate for hole tolerances up to .008″. The slotted end of the thermoplastic body expands to compensate in an oversize hole. The sturdy shoulder of the press-fit ball plunger provides a…
“One-Stop” super precision bearing info resource
Emerson Bearing Boston now serves as a “one-stop” bearing information resource for Original Equipment Manufacturers and Maintenance, Repair and Operations markets around the world. The company has announced the release of a collection of Super Precision Bearing resources to help customers stay current on advances in bearing technology while also assessing their industry application needs. […]
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Linear actuators: belt driven vs. rack and pinion driven
Belts and rack and pinions have several common benefits for linear motion applications. They’re both well-established drive mechanisms in linear actuators, providing high-speed travel over extremely long lengths. And both are frequently used in large gantry systems for material handling, machining, welding and assembly, especially in the automotive, machine tool, and packaging industries. Timing belts for linear […]