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This document describes test methods and recommended documentation practices for determining the load carrying capacity, wear performance, and other characteristics of plastic gears. Types of tests covered This information sheet describes test methods for plastic gears...
This document describes industry accepted practices to inspect molded plastic gears. It identifies the unique characteristics of molded plastic gears that influence the accuracy and repeatability of gear measurements. This document does not establish a quality...
This Japanese Industrial Standard stipulates the method for estimating the strength exhibited by plastic materials against bending fatigue breakage at the dedendum when they are used for cylindrical gears (hereafter referred to as the gears) that constitute a paralleled...
This information sheet provides descriptions of plastic materials commonly used in gearing. It relates the general properties of these materials to typical operating conditions of gears. Properties that relate to the manufacturing processes of machining and molding are...
The objective of this information sheet is to inform the plastic gear designer of the importance to clearly and thoroughly define the gear specifications to the plastic gear producer. It discusses the specifications for gear tooth geometry, inspection,...
This paper gives an overview on the state of art in plastic gear resistance calculation. The main problem with plastics is the dependency of the stress cycle curve (Woehler line) with temperature. Today, more plastic gears (as in automobile headlights) are used in a high...
This paper presents the results of collaboration to develop tools for the prediction of plastic gear tooth failure for any given set of operating conditions and to classify failure modes of these gears. The goal of the project is to characterize and predict the failure of...
Presents a new basic rack, AGMA PT, which, with its full round fillet, may be preferred in many applications of gears made from plastic materials. It contains a description, with equations and sample calculations, of how the proportions of a spur or helical gear may be derived...
Presents a new basic rack, AGMA PT, which, with its full round fillet, may be preferred in many applications of gears made from plastic materials. It contains a description, with equations and sample calculations, of how the proportions of a spur or helical gear may be derived...
in recent years, plastic gears have found their popularity as replacements for metal gears in selected, lightly loaded applications. Many studies have been done in the area of plastic gearing such as plastic material selection, injection molding and load...
Although elemental gear inspection is rarely specified for molded plastic gears, themeasurement equipment and practices can be valuable in advancing the molding processes and improving the quality of the molded gears. After a brief description of plastic...
The quality of molded plastic gears is typically judged by dimensional feature measurements only. This practice overlooks potential deficiencies in the plastic injection molding process and its effect on the integrity of the plastic material. These deeper issues are...
