UniTrax Motor-Ready Linear Axis for Faster Linear Motion System Integration
Posted in: New Product
5 days ago

Configurable system reduces engineering and installation work

Nexen Group, Inc. has introduced the UniTrax motor-ready linear axis, a configurable linear motion system designed to reduce the engineering, component selection, and installation work required of original equipment manufacturers (OEMs), machine builders, and system integrators. Built on Nexen’s industry-tested Roller Pinion System (RPS), UniTrax brings the primary linear motion components together in a single purpose-built system.

UniTrax is now available in nominal 1-meter and 1.5-meter lengths. Custom lengths shorter than 1.5 meters are available upon request. Customers can specify the axis length and planned gearhead, thus allowing Nexen to configure the system for specific applications.

The product was developed in response to customer requests for an easier way to implement Nexen’s linear motion technology. An initial voice-of-customer survey identified the need for a more complete system that would reduce the component sizing, mounting design, and assembly work normally completed by customers. Nexen estimates that UniTrax can save approximately 19 hours of labor compared with sizing individual components, designing mounting features, and separately assembling and installing the components.

“Customers wanted the performance of our Roller Pinion System without having to engineer and assemble every part of the axis themselves. UniTrax gives them a configurable axis that reduces integration work and helps them move more quickly toward a production-ready machine,” said Craig Pellin, vice president of sales and marketing at Nexen Group.

The UniTrax linear axis includes the RPS drive system, guide rail, and carriage plate. The customer supplies the servo motor, gearhead (if needed), and cable management system. For applications that require additional load support, the customer can also add a second guide rail and a larger carriage plate.  The axis’ clamp-collar design accepts shaft diameters of up to 22 mm, thus accommodating gearheads through the Stober P4 size as well as gearheads with smaller shafts. 

Built on Nexen’s RPS, UniTrax delivers zero backlash, repeatability of ±20 micrometers, and positional accuracy up to ±80 micrometers in a fully supported top-mount configuration. In addition, it reaches speeds of up to 4 m/s as well as provides an average thrust capacity of 1,000 N and a static thrust capacity of 2,000 N.

UniTrax can operate without lubrication at speeds of up to 1m/s, thereby providing an advantage in both dirty and clean environments. Without exposed lubricant, debris is less likely to adhere to the drive system in dirty applications, and the system avoids introducing lubricant into clean environments. Unlike belt- and ball-screw-driven actuators that may face speed limitations as travel length increases, the RPS maintains high-speed capability over longer travel lengths.

The axis can be used as a standalone axis, or it can be configured with a larger carriage plate. Potential applications include Cartesian robots, food-processing equipment, custom drilling and cutting systems, gantry routers, nondestructive testing and measurement systems, laser and plasma cutting, welding, woodworking, and multiheaded systems operating on a common axis.