In practical use, most gears have an involute shape of tooth flanks. However, external
involute gears have some drawbacks, such as unfavourable kinematic conditions at the …

A systematic combination of experimental and numerical methods was employed in a
comprehensive study on the high-cycle tooth bending fatigue of polymer gears with a …

A comprehensive experimental failure analysis of S-polymer gears is presented in this study.
The analysed gears, made of two often used polymers (POM and PA66) in gear …

The article presents a comprehensive study on the tooth bending strength of spur gears with
a progressive curved path of contact, or so-called S-gears. Systematic gear meshing …

Plastic materials can be used for various gears and gear mechanisms due to their qualities,
like wear resistance when running dry, low noise, vibration dam**, low inertia, low …

There are many plastic materials (POM, PA66, PEEK,...) and material combinations
available. The question is which combination is the correct one. It depends on many factors …

The existing models for the conversion and design of polymer gears are only valid for
involute gears. This research was focused on S-gears, a specific type of gear profile which …

Search for an improved gear tooth flank shape arose from heavy industry problems rolling
mills. Original involute gears suffered severe flank damages. So, better gear teeth flanks …

Plastic gears became inevitable in many industries, numerous material pairs are available to
fit any design needs. Material data bases and data sheets information is insufficient in this …

The chapter starts with the theory defining S-gears and their properties and compares S-and
involute gears. Most of the text deals with cylindric spur gears. S-gears are defined with the …