There are a number of questions you need to ask yourself when designing a plastic gear. We can help you with these questions....

  • How much backlash does a plastic gear require?
  • How much allowance in backlash is to be allocated to moisture absorption?
  • What is the impact of a cast-in metal core on the gear backlash?
  • Is zero-backlash an objective?
  • Am I taking a risk by just replacing a metal with a plastic gear?
  • Is a bigger or smaller tooth better for my application?
  • How fast can the gears turn without lubrication?
  • Can the class of the gear change in different environments?
  • Can I reduce inertia and maintain adequate gear strength?
  • How do you increase tooth rooth strength up to 18% when face width is limited?
  • How do you determine flank pressure safety?
  • How many hours will a gear run in a given application?
  • What is the most suitable material for my application?
  • How do I attach the gear to the shaft?
  • What are the alternatives for large and small gears?
  • Can a plastic gear be used in sub-zero, such as -50 degree F, temperatures?
  • What is the difference in gear life between pressing an all-plastic gear onto a shaft vs. pressing on a gear with a metal core?
  • What is the largest OD I can design with plastic?
  • Can a bearing be safely installed in small plastic idler gears?
  • Why are some plastic gears noisier than others?
  • Should the pinion or the driven gear be designed from plastic?
  • Which plastic material has the highest impact strength for my shock load application?
To learn more about Power-Core gears with zero-backlash please call Tody Mihov at 201-767-8066, or e-mail him at