Nexen Group Roller Pinion System (RPS)

The Universal Rack model of Nexen Group’s Roller Pinion System (RPS) is designed to provide precise linear positioning with zero backlash for high-precision motion control applications. The Universal Rack model provides a solution for customers that require the features of the RPS system with thrust ratings up to 750-10,500 N.

Differing from a traditional rack-and-pinion system, the RPS features a roller pinion/toothed rack combination. The pinion comprises bearing supported rollers that engage a unique tooth profile. Each tooth profile is precisely measured to ensure high positional accuracy and eliminate cumulative error. As a result, the Universal Rack model is claimed to deliver positional accuracy to ±50 µm, and the meshing action results in less than 5 µm of backlash.

The Universal Rack models feature durable alloy steel construction or corrosion-resistant stainless steel. Minimum periodic lubrication intervals are required to ensure maximum performance.

Like all RPS models, the Universal Rack installs in conjunction with a flange-mount pinion and preloader. Racks are available in the standard 1 metre and ½ metre cut lengths or can be custom cut to certain lengths leaving no limit to travel distances. The RPS models are able to accommodate a wide range of application requirements.