Abstract
Attention has been paid to liquid-crystal polymers (hereinafter called LCP) as plastics of the next generation since these have features of high rigidity and small thermal expansion coefficient in addition to excellent heat resistance. Accordingly, in industry, application of LCP to gear materials has been attempted, but at present, data for investigation of its suitability are insufficient. From this fact, in this study, LCP gears were made by injection molding, and by performing experiments on them, gear life, tooth wear and change in tooth profile accompanying wear were examined and compared with those of polyacetal gears, for which there are actual results. In this way, the industrial applicability of LCP gears was confirmed.
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