7 Twitter accounts that make science fun!

It’s probably safe to say that those of you who follow this site (myself included) are science geeks. Whether it’s archaeology, astronomy, or biology, we’re fascinated by the latest discoveries across all realms of science and technology. And for staying on top of these developments, there’s no better platform than Twitter. Most leading scientists and […]

Linear Motion Tips

Direct-drive linear motors with integrated encoders offer resolution to 1.25 µm

Moticont has added two linear motors to its SDLM Series of high-speed direct-drive linear motors. These compact drives with a 1.0 in. (25.4 mm) stroke are just 1.00 in. (25.4 mm) in diameter and 3.75 in. (95.3 mm) long. These direct-drive linear motors feature resolutions of 5 µm (0.000197 in.) and 1.25 µm (0.000049 in.) […]

Linear Motion Tips

ETEL expands linear motor lLine

As engineers expand their range of machines to a point where a larger payload is required, an upgrade of their linear motors may be necessary. So, to make their design process easier, ETEL has added extra ironcore linear motor lengths to each of their different widths. These new lengths are compatible with existing 50, 70, […]

Linear Motion Tips

Second-gen electromechanical cylinder from Rexroth features a hygienic design

Rexroth has expanded its compact drive offerings, with the second generation EMC electromechanical cylinder. Featuring a hygienic design and IP65 protection class, they are suitable for applications with frequent cleaning cycles in the food industry. The new size EMC100-XC-2 increases the power density for feeding forces of up to 56 kN, particularly for applications in […]

Linear Motion Tips

Motion system applications: Better ballscrews, more applications

Ballscrews suit applications needing light, smooth motion, applications requiring precise positioning, and when heavy loads must be moved. Examples include machine tools, assembly devices, X-Y motion and robotics. Factors such as lead accuracy, axial play and preload, and life-to-load relationship are most commonly used to classify ballscrews. Lead accuracy is the degree to which the shaft’s […]

Linear Motion Tips

Two-axis rotary assembly provides fast micromachining capabilities

One new system from IntelLiDrives — a yaw-tilt rotary system with precision worm gearing — delivers positioning accuracy to 30 arc-sec; repeatability to 10 arc-sec; and speeds to 60 rpm. The design allows yaw rotation to 360° and tilt rotation of ±95° of loads to 10 kg. The integrated two-axis rotary assembly provides high-speed micromachining capabilities […]

Linear Motion Tips

Servo motor or stepper motor? How to choose

The overwhelming majority of linear motion applications (with the exception of pneumatically-driven types) use either a stepper motor or a servo motor to provide torque to the driving mechanism, which is typically a ball or lead screw, rack and pinion, or belt and pulley system. And unlike other components involved in linear motion, when choosing a motor, […]

Linear Motion Tips

Leadscrews: Motion system mainstays

Among the methods available for converting rotary motion to linear, leadscrews are a mainstay. A leadscrew, or power screw, is a threaded rod or bar that translates rotational motion into linear motion. Leadscrews generate sliding rather than rolling friction between a nut and the screw. Consequently, higher friction means a lower overall efficiency. And efficiency, […]

Linear Motion Tips

Precision motion and positioning systems to showcase at Photonics West 2017

Descend the escalator and enter the exhibit hall to the world’s largest multidisciplinary photonics event, taking just a few steps past the entrance, PI’s booth displays the latest state-of-the-art precision motion technologies. PI engineers are on-hand to answer questions and help you find the right solution for your precision motion project in industry, research, or […]

Linear Motion Tips

High-precision vertical lift stage from OES — Stable and motorized option

The AT20-100 Motorized Vertical Lift Stage from Optimal Engineering Systems, Inc. (OES) is a high-precision and high-load vertical lift stage. It easily integrates into applications. The stage has a 120 x 180 mm drilled and tapped platform with vertical travel of 100 mm and moves with 3.315 µm (non-microstep) resolution, 5 µm repeatability, and 15 µm positional accuracy. […]

Linear Motion Tips

Where linear motors improve designs: Application example in multi-axis stage

Machine-tool applications and the manufacture and assembly of semiconductor components account for more than half of all linear-motor use. That’s because linear motors are precise (albeit costly compared to other linear-motion options). Other applications for these relatively new motion components also include those that need fast and precise positioning or slow and extremely steady strokes. […]

Linear Motion Tips

ELP electric linear module from SCHUNK for user-friendly operation

The SCHUNK ELP can be adjusted in two simple steps making it the most user friendly electric linear module on the market. The end positions can be mechanically adjusted with a screw and the speed of extension and retraction is adjusted using rotary switches on the side of the unit. More after the jump. Speed […]

Linear Motion Tips

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 […]

Linear Motion Tips

Low-cost FDA/USDA/3A dairy compliant Water Dog linear slides

FDA/USDA/3A-Dairy compliant, Water Dog Sliders from LM76 feature Corro-Slick coated 300 series stainless steel rails and contoured WDX Polymer blocks.  Water Dog Sliders can be washed down with the most aggressive chemicals and caustic foaming agents and have an operating temperature range of – 400O to +180 OF.  Quiet, low maintenance Water Dog Sliders can be […]

Linear Motion Tips

New Profile Rail Linear Recirculating Bearings from Lintech

Lintech’s MR, ARC, and HRC Profile Rail Linear Recirculating Bearings incorporate two or four rows of recirculating balls arranged in a 45 degree contact angle with the raceway. The rigidity under moment and torsional loads is increased by this design. Larger ball size is used to enhance the load capabilities. This design offers equal loading in all […]

Linear Motion Tips

How to estimate your linear actuator needs with minimal application data

Choosing linear motion components during the development phase of a project has been a source of frustration for designers and application engineers for decades—especially when it comes to complex subassemblies such as linear actuators. Consider for a moment the influence that a linear actuator has on the overall machine design. First of all, in an actuator, […]

Linear Motion Tips

When do you need a ball screw?

The gap is narrowing between applications that require ball screws and those that are suitable for lead screws, and it’s becoming more difficult for engineers and designers to determine which technology is best for their machine. Advances in lead screw designs and materials have given them higher load capacities and better positioning accuracy, making them a sound choice […]

Linear Motion Tips

Latest motion applications: Electric actuators in new designs

Electric actuators come in versions as small as syringes for medical applications to those big enough to drive industrial presses. These muscles of precision motion usually incorporate an electric motor and rotary-to-linear device for conversion of torque to linear force. No matter the application, electric actuators deliver repeatability that’s indispensable for moving loads to a […]

Linear Motion Tips

The top 5.5 linear motion stories of 2016

As a writer and editor, it’s always fun (and sometimes surprising) to look back at the end of the year and see what articles our readers were most interested in. And for you, our readers, it offers the chance to take a quick look at what are, at least to some of your peers, important topics […]

Linear Motion Tips

When is static load capacity important?

When sizing a recirculating bearing, most designers and engineers focus on bearing life, which is based on dynamic load capacity. This is the load at which a linear recirculating bearing will, with 90 percent certainty, achieve the targeted service life before fatigue occurs. Static load capacity, on the other hand, is the force that causes permanent […]

Linear Motion Tips

Bosch Rexroth launches new microsite for resource kits

In an effort to make life even easier for time-challenged engineers, Bosch Rexroth has launched a microsite (http://www.movewithrexroth.com/) for its latest factory automation products and the associated Resource Kits. This website features easy navigation through ten of Rexroth’s newest products in the areas of Electric Drives and Controls, Linear Motion and Mechatronics, Plastic Chain Conveyors, […]

Linear Motion Tips

How to choose linear guide accuracy

When choosing a recirculating linear guide, there are several criteria that need to be specified, including size, preload and accuracy. And although the term “accuracy” is often used in a generic sense, when referring to recirculating ball or roller guides, it designates five characteristics: Height tolerance of the rail and block assembly Permissible difference in height between […]

Linear Motion Tips

Onboard electronics make linear actuators safer and smarter

By Chad Carlberg | Product-line manager for linear actuators, Thomson Linear • Today’s electromechanical actuators deliver performance that’s comparable or even superior to other technologies in outdoor applications. They’re often cleaner with lower cost of ownership than predecessors. Traditional electric actuators provide basic machine functionality (to push and pull loads on command via switches) but more […]

Linear Motion Tips

New multi-axis positioning family from PI

High-end industrial and research applications rely on precision motion stages and systems to execute mission-critical procedures and processes. PI, a leading provider of nanopositioning and motion control solutions, has developed its new family of linear, rotary, and Z-axis stages to meet those demanding requirements. Meet the L-310 vertical stage, the L-611 rotary stage, and the […]

Linear Motion Tips

FoodStream Pillow and Flange Blocks: FDA/USDA and 3A-Dairy Compliant

FoodStream electroless nickel plated pillow and flange blocks from LM76 are FDA/USDA/3A-Dairy compliant linear motion components. They complement LM76’s line of FDA compliant bearings, scraper seals, and shafting. FoodStream off-the-shelf pillow and flange blocks are ideal for use in processing and packaging food, producing pharmaceuticals, the BioPharma industry, and in medical devices. Inch size FoodStream […]

Linear Motion Tips