@article{oai:gunma-u.repo.nii.ac.jp:00003465,
 author = {長屋, 幸助 and 高橋, 則昭 and 戸上, 和幸 and 久米原, 宏之 and 大西, 章雄},
 issue = {681},
 journal = {日本機械学會論文集. C編},
 month = {May},
 note = {application/pdf, Journal Article, A low noise gear without lubrication is presented, which is made of COPNA material involving Graphite. The noise between steel gear and the present gear is investigated experimentally. The experiment is also performed to the gear mechanism using ordinary plastic gears. It is clarified that the noise from the gears is small as compared with ordinary plastic gears without lubrication. Especially, the noise of the present gear is significantly small when the gear is rotated under a load. The mechanism of noise suppression in our gear is investigated.},
 pages = {1374--1380},
 title = {無潤滑低騒音歯車の開発},
 volume = {69},
 year = {2003}
}