What is torque, and why is it important in linear motion?

Although torque refers to rotational motion, it is a fundamental concept in linear motion applications. Rotary motors produce torque, and when this torque is transmitted to a drive system – such as a screw, belt and pulley, rack and pinion, or chain and sprocket – it’s converted to linear motion. Torque is the rotational equivalent […]

What are the six basic parts of a worm-gear jack for vertical motion applications?

Screw jacks are indispensable linear-motion designs for lifts and other vertical-motion applications. They consist of six main components. First there is the housing. This contains all of the internal jack components. Second is the worm shaft – this is an input to the jack and typically where a motor handwheel is attached. The third jack […]

Two new absolute linear encoders with several interface options from NUMERIK JENA

NUMERIK JENA now offers two families of absolute linear encoders to fit into tight spaces. Called the LAK and KIT LA, these non-contact encoders offer several types of electrical interfaces, including EnDat 2.2 with analog signals. This interface allows motion stage manufacturers to use the absolute position values and the analog position values for different […]

Vertical linear motion: Hoists to lifts to AS/RS reach new heights

New technologies boost the reliability and efficiency of vertical motion designs (including an array of lifts and hoists) for setups of various sizes. In the feature, we get input from one industry expert on the subject and then outline five key parameters that dictate what makes linear actuators suitable for lifting. Mounting orientation — especially […]

What’s the difference between ball screw jacks and machine screw jacks?

Most prevalent are worm gear screw jacks because they can lift heavy loads with little input torque. The large mechanical advantage is through a worm gear ranging from 5:1 to 32:1 in combinations with lead screw or a ball screw. Ball screw jacks differ from machine screw jacks in a few key ways. Machine screw […]

When is a worm-screw jack the best linear motion solution for a vertical application?

Worm-screw jacks are a linear-motion design that’s been around for decades — though the modern version of the screw jack has changed a lot since its inception in the 1940s. Today’s versions use a basic worm-gear mechanism to drive either an acme screw or ball screw. When is a worm-screw jack a suitable linear-motion solution? […]

How to calculate acceleration

When sizing a linear system, a lot of attention is given to velocity, but the effects of acceleration on the system and its components are often more significant than those due to velocity. Acceleration is most associated with the move profile and how to best achieve the required travel in the specified time, but it […]

SKF CAHB-E series electromechanical linear actuators — Drop-in alternatives to hydraulics

New SKF CAHB-E series electromechanical linear actuators introduce powerful, efficient, and environmentally friendly drop-in alternatives to hydraulic systems, whether for OEM or aftermarket system applications. These next-generation actuators are engineered to deliver increased thrust and holding force compared with previous designs and to achieve enhanced levels of speed, precision, and reliability. They ultimately can perform […]

New linear bearing coming later this year: eXrail from NB Corp.

Due for release later this year, a linear bearing called the eXrail from NB Corp. of America is a linear guide rail using recirculating needle rollers to support loads over linear strokes. It’s useful in applications needing high precision (such as medical equipment, for example) thanks to high rigidity and motion accuracy — as well […]

AS/RS design to run new manufacturing and distribution center by 2019

Cimcorp North America of Murata Machinery (Muratec) will supply an installation for end-to-end material handling to Giti Tire at a new South Carolina manufacturing facility. Scheduled for completion in 2019, the turnkey Cimcorp system is called a Dream Factory and will include all the facility’s automation equipment and system control, project management, and integration. Singapore-based […]

Large-area travel XYZ gantry systems from IntelLiDrives

Large-area travel XYZ gantry systems from IntelLiDrives now offer XY travel from 300 x 300 mm to 3 x 3 m. The Z-axis stroke reaches 300 to 1,000 mm. A synchronous belt drive runs off a stepper, servo, or SMART motor. Motion is repeatable to 50 μm. The XYZ gantry system carried loads of 10 […]

XYZ voice coil positioning stage from H2W Technologies

The VCS20-20-03-MC-01-XYZ 3-axis positioning stage from H2W Technologies uses voice coil motors, instead of 3-phase brushless linear motors, to significantly reduce the overall size, weight, and cost of the system. The VCS20-20-03-MC-01-XYZ is a closed-loop voice coil driven XYZ positioning stage and is ideal for three-axis positioning applications. It uses H2W voice coil motors NCC20-18-020-1A […]

What limits linear bearing speed? (Part 2)

In part 1 of this series on bearing speed, we looked at the factors that limit the speed of linear recirculating bearings. In this segment, we’ll look at the factors that limit the speed of linear plain bearings. Linear plain bearings operate with sliding contact between the two bearing surfaces, so the limitations encountered with […]

Large area travel XYZ gantry systems from IntelLiDrives

IntelLiDrives’ new BEMA Series Synchronized XY Gantries are offered in travel lengths from 300 x 300 mm to 3,000 x 3,0000 mm. With speeds up to 2 m/sec, BEMA Gantry Series are ideal for applications in high-speed positioning for light-to-medium payloads. The BEMA Series can be motorized with stepper motors, brushless servo motor/encoders or integrated […]

Precise, rigid, high load Slide Guides from NB

SGL Slide Guides from NB Corporation are high-precision, high-rigidity, high load capacity linear bearings with low friction, non-stick or slip mechanisms that provide smooth linear motion even under high loads. SGL Slide Guides are available in lengths from 160 mm to 3000 mm. Six types of blocks are available depending on the mounting space and […]

Klüber Lubrication offers BARRIERTA K greases for long-term stability and thermal resistance

Klüber Lubrication, a worldwide manufacturer of specialty lubricants, now sells BARRIERTA K greases for electrical and precision engineering applications. These greases are based on perfluorinated polyether oil (PFPE) to provide a long component life over a wide service temperature range. They are resistant to aggressive chemicals, compatible with elastomers and plastics, and provide low running torque. […]

Power of V8 … and nanometer precision positioning in PI’s new piezo linear motor

Motion control and piezo systems expert PI (Physik Instrumente) introduces a new robust OEM walking motor drive, the N-331, with its configuration rooted in existing patented piezo actuator technology and a patented piezo stepping motion principle design. Based on the application of historically successful technology, the new design it is suitable for use in high-end […]

LINAK now sells integrated controller (IC) actuator LA33 for farming and agriculture

Many manufacturers of adjustable applications for example farming, mobile agriculture, or industrial automation are familiar with LINAK actuators with integrated controller functions — including the LA14, LA25, and LA36. Now a new mid-range offering completes the LINAK portfolio. The new powerful actuator is the LA33 electric linear actuator. It’s a mid-range powerhouse to supply a perfect fit where small actuators […]

MKS offers Newport high-performance Delay (linear-motor-driven) line stages

MKS Instruments now sells Newport DLS Series high-performance linear actuators called Delay Line Stages. The DLS series features affordable high performance linear-motor-driven stages with integrated motion controllers. Optimized for retroreflectors, repeatable femtosecond positioning and exceptionally fast traverse speeds, the compact stages are a perfect fit for spectroscopy applications that require single or multiple delay lines. With travel

MKS offers Newport high-performance Delay (linear-motor-driven) line stages

MKS Instruments now sells Newport DLS Series high-performance linear actuators called Delay Line Stages. The DLS series features affordable high performance linear-motor-driven stages with integrated motion controllers. Optimized for retroreflectors, repeatable femtosecond positioning and exceptionally fast traverse speeds, the compact stages are a perfect fit for spectroscopy applications that require single or multiple delay lines. With travel […]

Maintenance-free chains for applications in conveying systems

iwis introduces Megalife-branded maintenance-free roller and conveyor chains. The special characteristics of the Megalife chains allow longer replacement intervals and reduce maintenance costs and downtimes of conveying systems. The chains are used wherever relubrication is not possible or disadvantageous, for example in dry ambient conditions and on installations with restricted maintenance access. This includes conveying […]

Podcast: Scott of Nippon on iron core, U-channel, and tubular linear motors

In a recent Technology Tuesdays podcast, Brian Scott, application engineer at Nippon Pulse America, talked to me a little bit about linear motors such as iron core, U-channel, and tubular linear motors … and the benefits and drawbacks of each. I asked him about some of the major design objectives OEMs cite when migrating axes to linear […]

New integrated X-Y linear motor stage from PI

PI (Physik Instrumente) now offers a new reference class XY stage in its PIMag series of high dynamic linear motor stages with the V-731, equipped with incremental linear encoders for direct position measurement and 3-phase electromagnetic linear motors. Fields of application include micro-assembly, biotechnology, precision laser machining, optics, lens testing, and photonics alignment. The proprietary […]

19 new features in Bimba “Blue and Improved” air cylinder line — including Flat-1 air cylinder

Bimba, an industry-leading innovator of pneumatic, hydraulic and electric motion solutions, now offers a cutting-edge compact air cylinder – the Blue and Improved Flat-1®. Blue (as in New) and Improved designates Bimba products that have been redesigned to offer enhancements applying the most recent advances in design technology. The Blue and Improved Flat-1® features 19 new

Linear-actuator manufacturer Linak U.S. begins $33 million expansion of Kentucky plant

Linak U.S., manufacturer of linear actuators, has begun a $33 million expansion of its Louisville, Ky. plant at 2200 Stanley Gault Parkway. The company purchased a vacant 14.6-acre site for this expansion earlier this year. The new 145,000-square-foot building will double the size of the current facility and add more than 400 full-time jobs to […]