---
title: Plastic Roller life Calculation
description: Intech Power-core engineers can calculate the life expectancy of rollers made from a wide range of machined plastics including Power-Core polyimides
---

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# Roller Calculation

*"Will plastic rollers or cam followers last in my application?" *

We hear this question in many variations every day. Together with a leading university we developed a roller life calculation, to reassure our customers of the reliability of Intech Power-Core™ rollers. This calculation includes calculation of flat development and number of expected life cycles.

The roller life calculation is based on experimental data collected in tests over a period of three years and with over a decade of field results that have consitently met or exceed our calculated expectations. We can say with confidence that the calculation has become a reliable predictive tool for durability of plastic rollers.

## Sample Roller Calculation

![Input Data - Roller Radius, Face Width, Edge Fillet, Rail Radius, Radial Load, Speed, Contact Width and Length](https://www.intechpower.com/hs-fs/file-14949713-gif/images/img198.gif)![Loads and Safety Data Output - Perpetual Rolling Force and Hertzian Stress](https://www.intechpower.com/hs-fs/file-14949835-gif/images/img199.gif)![Plastic Roller Life Expectancy - Cycles (Roll Overs)](https://www.intechpower.com/hs-fs/file-14949916-gif/images/img200.gif)![Initial Rolling Force Calculation](https://www.intechpower.com/hs-fs/file-14949979-gif/images/img201.gif)

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