As the field of specialized fitness equipment has grown, so has a proliferation of various designs and configurations for both the equipment and the guide mechanisms. The fastest growing segment of focused equipment are those designed to meet a woman’s or senior’s needs for smooth consistent motion and feel. Bearing options for this specialized equipment includes linear rolling element bearings, bronze bushings, solid plastic bearings, and Simplicity self-lubricating bearings.
In this paper, we will discuss the various components and basic requirements needed in weight stack and fitness equipment applications, along with the advantages and disadvantages associated with each type of bearing option. Weight stack needs include consistently smooth motion, repeatable tolerances, ease of assembly, and minimum amount of maintenance.
While the various options for bearing designs in weight stacks and fitness equipment offer some advantages at certain stages of the products life, only the Simplicity self-lubricating linear bearings provide consistent results in all the required areas. Consistency in motion is built into the design with the bearing material FrelonGOLD® that has the same frictional characteristics for the life of the bearing. The quality and repeatability of fit and function are present through the entire manufacturing, assembly, and usage life cycle.
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