A roller screw’s application will dictate whether the shaft or nut should rotate. In either case, the type of nut selected depends on the load and how the assembly will move and actuate the system. There are three major types of roller screw nuts: single, split, and double. Single nuts are the most common configuration […]
Linear drives (all)
Precision ball splines deliver robust rotary and linear motion integration
Thomson Industries, Inc., has introduced a line of precision ball splines that enable robust delivery of rotary and linear motion on a single shaft. These new components give designers more flexibility to compress an assembly, extend a stroke, distribute a load or otherwise meet modern automation demands. “Ball splines have provided an elegant, single shaft […]
How to select the right roller screw size
Roller screw systems typically have smaller footprints and more compact designs than their hydraulic counterparts. One motivation to replace hydraulics with roller screws is to reduce bulky and auxiliary equipment and its associated maintenance without compromising performance. Roller screw shafts come in a variety of diameters and load capacities. Some are 3.5 mm in diameter with […]
igus offers custom toothed belt pulleys delivered in 48 hours
igus is expanding its 3D-print and online ordering offering to include custom format toothed belt pulleys. Toothed belt pulleys are a common component in many machines and are widely used in linear drives of printers, robots, and packaging machines. However, if an individual variant is required, developing a custom component can take days or even […]
Lead-screw assemblies from igus for automotive applications
igus’ dryspin lead-screw assemblies are now available as a single-source solution for the automotive industry. In today’s vehicles, advanced linear motion components play a critical role in providing convenience and safety to drivers. Lead-screw assemblies are used extensively wherever automotive parts need to be opened, closed, lifted, or lowered. Typical uses include seats, doors, sunroofs, […]
Bosch Rexroth adds high-force model to electromechanical cylinder line
Bosch Rexroth’s electromechanical cylinders (EMCs) are now available in a high-force, high-precision, low-maintenance version – the EMC-HP. Designed for heavy loads up to 100 kN, the new actuators are robust, compact and low-maintenance. Based on the reliable planetary screw drive, users will benefit from impressive continuous power even under harsh conditions. This is thanks to […]
Self-lubricating toothed belt axis for clean use in food manufacturing
igus has introduced a maintenance-free toothed belt axis specifically designed to improve sanitation in food manufacturing systems. The new drylin ZLW toothed belt axis is based on hygienic design principles and uses FDA-compliant materials. Cleaning complex machines and systems in food production leads to longer and therefore expensive downtime. For instance, industrial bakeries are faced […]
What is a high helix (high lead) screw?
Ball and lead screws are specified by the diameter of the screw shaft and the lead (or, in some cases, pitch) of the screw thread. The lead, which specifies how far the nut travels for each revolution of the screw, is created by the thread, or helix, that wraps around the screw shaft. If the […]
Rollon’s updated digital platform includes personalized product selector
Rollon, a leading manufacturer of linear motion systems, guides, linear actuators and gantry systems, has unveiled a new digital tool to help engineers design equipment and systems more efficiently. The new ecosystem consists of two core elements: a redesigned corporate website and myRollon — a tool that personalizes product selection. The website has been expanded […]
How to calculate duty cycle and what it means for machine life
Determining the life of a linear system that uses balls or rollers is relatively straightforward, thanks to the L10 bearing life equation, which gives life in meters of travel (for linear bearings) or revolutions (for screws). And for plain bearings and lead screws, manufacturers typically use the bearing’s PV value and operating conditions to provide an […]
