A type of lubricant, also called machine oil. Conventional machine oils were generally standard-grade lubricants with a viscosity of 25-45 centistokes at 50°C, and were used to lubricate general machinery and axles. However, with the revision of the Japanese Industrial Standards (JIS) in 1980, the standards for additive-free standard-grade lubricants such as spindle oil, machine oil, dynamo oil, and cylinder oil were unified and came to be called machine oil (broad definition). Machine oils in the narrow sense are divided into 18 types according to the industrial lubricant viscosity classification. Some of these machine oils are used as lubricants for general light-load machinery, but the majority are additive-free mineral oils, used as raw materials for various lubricants, metal processing oils, insulating oils, etc. [Namba Seitaro] [Reference item] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
潤滑油の一種で機械油ともいう。従来のマシン油は、一般に50℃における粘度が25~45センチストークスの並級(なみきゅう)潤滑油で、一般機械、車軸などの潤滑に使われるものであったが、1980年(昭和55)の日本工業規格(JIS(ジス))の改定により、従来のスピンドル油、マシン油、ダイナモ油、シリンダー油などの無添加並級潤滑油の規格は、統合されてマシン油(広義)とよばれるようになった。狭義のマシン油は工業用潤滑油粘度分類により18種類に分けられている。これらのマシン油の一部は、一般軽荷重機械の潤滑油として使われているが、大半は無添加鉱油として、各種潤滑油、金属加工油、絶縁油などの原料として使われている。 [難波征太郎] [参照項目] |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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