Engineers building linear motion systems can use ground-up DIY approaches or purchase complete turnkey solutions. Here we explain where each tactic is most profitable. By John Brokaw and Kent Martins | Valin Corp. How should designers pick between building linear-motion designs in-house or purchasing pre-engineered assemblies? What is there to consider when determining the best […]
Altra Industrial Motion power transmission components for vertical lift systems
Altra Industrial Motion supplies technically advanced clutches and brakes, geared motors, speed reducers, couplings, controls and sensors, sheaves, and castings for a wide range of vertical lift applications including cranes and hoists, stage lifts, elevators, escalators, ski lifts, amusement rides, overhead doors, moveable bridges and ship lifts. With industry-leading brand names, including Warner Electric, Stromag, […]
IntelLiDrives high-frequency linear actuators based on voice-coil technology
IntelLiDrives ICVCA circular voice-coil positioning stages are compact stages suitable for closed-loop short stroke positioning applications where precision, repeatability and low force ripple are of utmost importance. ICVCA linear stages are built with precision crossed-roller guides that provide high rigidity to complement the high acceleration capability of the ICVC module at the core of the […]
Can a linear actuator provide the rigidity and accuracy of a linear stage?
Although there are no industry standards that define linear actuators and linear stages, generally accepted terminology indicates that a linear actuator is typically constructed with an aluminum extrusion or base, while a linear stage is typically built on a flat, machined steel or granite base. This distinction implies that linear actuators can typically provide longer […]
Why use a multi-start ball screw?
The easiest way to get higher speed from a ball screw assembly (within the screw’s critical speed limit, which is based on diameter, length, and end fixity) is to use a higher screw lead. But increasing the lead of the screw has a drawback: as the lead increases, the number of effective turns in the […]
Dynatect expands precision ground ball screw capabilities with new end cap ball return design
Replacing precision ground ball screws on legacy equipment is complicated by the dissolving of original manufacturers and by product customizations. Offering multiple types of ball screw return designs provides the flexibility needed to keep older equipment running. The long life of machine tool equipment has resulted in machine tools which are often older than their […]
Ballscrew repair from Dynatect: New calculator to decide when to buy (or refurbish)
Alternatives to the increasing lead time for precision ground ballscrews (PGBS) are driving plant managers to reevaluate procurement options. OEMs often choose to only purchase new precision ground ballscrews (PGBSs) without evaluating repair options. Other choose to maintain no-stock or low-stock of PGBS due to ease of procurement. But now with lead times of 16 to 20 weeks, […]
Tolomatic electric actuators with longer strokes (to replace fluid-power cylinders)
Tolomatic high force electric rod-style actuators now feature stroke lengths to 1.5 m (60 in.) for more flexibility for converting motion control applications with hydraulic or pneumatic cylinders to electric linear motion. Designed for high duty-cycle performance in demanding applications, the RSX, RSA and ERD electric rod-style product families use planetary roller screws for longer […]
Tolomatic integrated servo motor and drive (with PROFINET) automates simple motion axes
The Tolomatic ACSI integrated servo/motor/controller is now available with PROFINET Industrial Ethernet protocol — to let engineers design easy-to-use and cost-effective electric actuator setups for single-axis applications. The integrated package is suitable for replacing pneumatic cylinders and automating any simple axis of motion with Siemens or other PROFINET enabled PLCs. With built-in configurations for Tolomatic […]
Parker Virtual Engineer— New easy-to-use sizing and selection design collaboration tool for reducing design expenses
Parker Hannifin’s Electromechanical & Drives Division now offers a motion-control design tool for engineers to help with proper selection of electromechanical linear motion. Virtual Engineer presents an intuitive interface where users can easily enter their application specifications (for example — speed, load, external forces) and then quickly navigate to accurately sized product options. The tool […]
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