{"id":1933,"date":"2026-04-09T05:59:17","date_gmt":"2026-04-09T05:59:17","guid":{"rendered":"https:\/\/wormwheelgear.top\/?p=1933"},"modified":"2026-04-09T05:59:17","modified_gmt":"2026-04-09T05:59:17","slug":"worm-gear-thermal-management-calculating-equilibrium-temperature-identifying-thermal-limit-and-specifying-cooling","status":"publish","type":"post","link":"https:\/\/wormwheelgear.top\/ja\/worm-gear-thermal-management-calculating-equilibrium-temperature-identifying-thermal-limit-and-specifying-cooling\/","title":{"rendered":"\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u306e\u71b1\u7ba1\u7406 \u2015 \u5e73\u8861\u6e29\u5ea6\u306e\u8a08\u7b97\u3001\u71b1\u9650\u754c\u306e\u7279\u5b9a\u3001\u51b7\u5374\u65b9\u6cd5\u306e\u6307\u5b9a"},"content":{"rendered":"
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\"\"<\/p>\n

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\u5b9f\u8df5\u30ac\u30a4\u30c9\u30b7\u30ea\u30fc\u30ba \u00b7 \u71b1\u5de5\u5b66<\/p>\n

\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2 \u71b1\u7ba1\u7406<\/span> \u2014 \u5e73\u8861\u6e29\u5ea6\u306e\u8a08\u7b97\u3001\u71b1\u9650\u754c\u306e\u7279\u5b9a\u3001\u51b7\u5374\u306e\u6307\u5b9a<\/h1>\n

\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u99c6\u52d5\u88c5\u7f6e\u306b\u306f\u3001\u71b1\u5b9a\u683c\u3068\u6a5f\u68b0\u7684\u5b9a\u683c\u306e\u4e21\u65b9\u304c\u3042\u308a\u307e\u3059\u3002\u307b\u3068\u3093\u3069\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u6a5f\u68b0\u7684\u5074\u9762\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002\u590f\u306b\u904e\u71b1\u3067\u6545\u969c\u3057\u305f\u99c6\u52d5\u88c5\u7f6e\u306f\u3001\u6a5f\u68b0\u7684\u4ed5\u69d8\u306e\u7bc4\u56f2\u5185\u3067\u3057\u305f\u304c\u3001\u71b1\u5e73\u8861\u3092\u8a08\u7b97\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u305f\u3081\u3001\u71b1\u5e73\u8861\u3092\u8d85\u3048\u3066\u52d5\u4f5c\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n

\u71b1\u8a08\u7b97\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af<\/span>\u5e73\u8861\u6e29\u5ea6\u306e\u516c\u5f0f<\/span>\u51b7\u5374\u65b9\u6cd5\u306e\u6bd4\u8f03<\/span>\u30aa\u30a4\u30eb\u7c98\u5ea6\u306e\u5f71\u97ff<\/span><\/div>\n<\/div>\n<\/section>\n
\n
\u2699 \u97d3\u56fd\u30a8\u30d0\u30fc\u30d1\u30ef\u30fc\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u682a\u5f0f\u4f1a\u793e\u3000\u4eac\u757f\u9053\u5b89\u5c71\u5e02\u3000sales@wormwheelgear.top<\/div>\n<\/div>\n
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\u590f\u306b\u306f\u5931\u6557\u3057\u305f\u304c\u51ac\u306b\u306f\u5931\u6557\u3057\u305f\u30c9\u30e9\u30a4\u30d6<\/h2>\n

\u97d3\u56fd\u306e\u5370\u5237\u5de5\u5834\u306f10\u6708\u306b\u30ed\u30fc\u30eb\u642c\u9001\u30b7\u30b9\u30c6\u30e0\u306b\u65b0\u3057\u3044\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u99c6\u52d5\u88c5\u7f6e\u3092\u8a2d\u7f6e\u3057\u305f\u3002\u99c6\u52d5\u88c5\u7f6e\u306f11\u6708\u300112\u6708\u30011\u6708\u30012\u6708\u307e\u3067\u306f\u554f\u984c\u306a\u304f\u7a3c\u50cd\u3057\u3066\u3044\u305f\u3002\u3057\u304b\u3057\u30017\u6708\u4e2d\u65ec\u3001\u5e74\u9593\u3067\u6700\u3082\u6691\u3044\u9031\u306b\u7570\u97f3\u304c\u767a\u751f\u3057\u3001\u904e\u71b1\u3057\u59cb\u3081\u305f\u30028\u6708\u306b\u306f\u30a6\u30a9\u30fc\u30e0\u306e\u306d\u3058\u5c71\u5074\u9762\u304c\u64e6\u308a\u5207\u308c\u3066\u6545\u969c\u3057\u305f\u3002\u99c6\u52d5\u88c5\u7f6e\u306f\u6a5f\u68b0\u7684\u8ca0\u8377\u306b\u5bfe\u3057\u3066\u9069\u5207\u306a\u4ed5\u69d8\u3067\u9078\u5b9a\u3055\u308c\u3066\u3044\u305f\u304c\u3001\u71b1\u7279\u6027\u306f\u8a08\u7b97\u3055\u308c\u3066\u3044\u306a\u304b\u3063\u305f\u3002<\/p>\n

10\u6708\u306e\u904b\u8ee2\u6761\u4ef6\uff1a\u5468\u56f2\u6e29\u5ea618\u2103\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u5e73\u8861\u6e29\u5ea6\u7d0452\u2103\u30027\u6708\u306e\u904b\u8ee2\u6761\u4ef6\uff1a\u5468\u56f2\u6e29\u5ea634\u2103\uff08\u63db\u6c17\u306e\u306a\u3044\u6a5f\u68b0\u5ba4\uff09\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u5e73\u8861\u6e29\u5ea6\u7d0475\u2103\u300275\u2103\u3067\u306f\u3001ISO VG 460\u9271\u6cb9\u306e\u7c98\u5ea6\u304c100cSt\u672a\u6e80\u3068\u306a\u308a\u3001\u3053\u306e\u6ed1\u308a\u901f\u5ea6\u3067\u5fc5\u8981\u306aEHD\u6cb9\u819c\u539a\u3055\u3092\u5f97\u308b\u306b\u306f\u4e0d\u5341\u5206\u3067\u3042\u3063\u305f\u3002\u99c6\u52d5\u88c5\u7f6e\u306f\u3001\u5168\u5b63\u7bc0\u306e\u8ca0\u8377\u306b\u5bfe\u3057\u3066\u6a5f\u68b0\u7684\u306b\u5b9a\u683c\u3055\u308c\u3066\u3044\u305f\u304c\u3001\u71b1\u5b9a\u683c\u306f\u51ac\u5b63\u306e\u307f\u3067\u3042\u3063\u305f\u3002<\/p>\n

\u71b1\u8a08\u7b97\u306f\u8907\u96d1\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5fc5\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u306f4\u3064\u3060\u3051\u3067\u3001\u8a08\u7b97\u6642\u9593\u306f10\u5206\u7a0b\u5ea6\u3067\u3059\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u5e73\u8861\u30cf\u30a6\u30b8\u30f3\u30b0\u6e29\u5ea6\u306e\u8a08\u7b97\u65b9\u6cd5\u3001\u30c9\u30e9\u30a4\u30d6\u304c\u71b1\u9650\u754c\u5185\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u306e\u78ba\u8a8d\u65b9\u6cd5\u3001\u305d\u3057\u3066\u9650\u754c\u3092\u8d85\u3048\u3066\u3044\u308b\u5834\u5408\u306b\u9069\u5207\u306a\u51b7\u5374\u88c5\u7f6e\u3084\u30aa\u30a4\u30eb\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u65b9\u6cd5\u3092\u6307\u5b9a\u3059\u308b\u305f\u3081\u306e\u67a0\u7d44\u307f\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n

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\"\"<\/div>\n
\"\"<\/div>\n<\/div>\n
\n

\u30b9\u30c6\u30c3\u30d71\uff1a\u30ae\u30a2\u306e\u304b\u307f\u5408\u3044\u306b\u304a\u3051\u308b\u767a\u71b1\u91cf\u3068\u52d5\u529b\u640d\u5931\u3092\u8a08\u7b97\u3059\u308b<\/h2>\n

\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u99c6\u52d5\u306f\u3001\u4ed6\u306e\u30ae\u30a2\u30bf\u30a4\u30d7\u3068\u6bd4\u8f03\u3059\u308b\u3068\u975e\u52b9\u7387\u7684\u306a\u52d5\u529b\u4f1d\u9054\u88c5\u7f6e\u3067\u3042\u308b\u3002\u5165\u529b\u52d5\u529b\u306e25%\u304b\u308950%\u304c\u30ae\u30a2\u306e\u304b\u307f\u5408\u3044\u63a5\u89e6\u90e8\u3067\u71b1\u306b\u5909\u63db\u3055\u308c\u308b\u3002\u3053\u306e\u71b1\u306f\u30cf\u30a6\u30b8\u30f3\u30b0\u8868\u9762\u3092\u901a\u3057\u3066\u5468\u56f2\u74b0\u5883\u306b\u7d99\u7d9a\u7684\u306b\u653e\u51fa\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u767a\u71b1\u91cf\u304c\u653e\u71b1\u91cf\u3092\u4e0a\u56de\u308b\u3068\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u6e29\u5ea6\u306f\u65b0\u305f\u306a\u5e73\u8861\u72b6\u614b\u306b\u9054\u3059\u308b\u304b\u3001\u3042\u308b\u3044\u306f\u6f64\u6ed1\u30b7\u30b9\u30c6\u30e0\u304c\u6545\u969c\u3059\u308b\u307e\u3067\u4e0a\u6607\u3057\u7d9a\u3051\u308b\u3002<\/p>\n

\n
\u767a\u71b1\u5f0f<\/div>\n
Q_\u640d\u5931 (W) = P_\u5165\u529b (W) \u00d7 (1 \u2013 eta)<\/div>\n
P_input = \u30e2\u30fc\u30bf\u8ef8\u51fa\u529b (W) = \u30e2\u30fc\u30bf\u5b9a\u683c\u51fa\u529b \u00d7 \u8ca0\u8377\u7387<\/span>
\n\u30a4\u30fc\u30bf = \u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u306e\u6a5f\u68b0\u52b9\u7387\uff08\u5c0f\u6570\uff09 = tan(\u30e9\u30e0\u30c0) \/ tan(\u30e9\u30e0\u30c0 + \u03c1')<\/span>
\n\u4f8b\uff1a3 kW\u306e\u5165\u529b\u300160%\u306e\u52b9\u7387\uff1aQ_loss = 3,000 x (1 \u2013 0.60) = 1,200 W\u306e\u9023\u7d9a\u767a\u71b1<\/span>
\n75%\u306e\u52b9\u7387\u306e\u5834\u5408\uff1aQ_loss = 3,000 x (1 \u2013 0.75) = 750 W \u2014 \u540c\u3058\u96fb\u529b\u306737%\u5c11\u306a\u3044\u71b1<\/span><\/div>\n<\/div>\n

\u52b9\u7387\u306f\u56fa\u5b9a\u3055\u308c\u3066\u304a\u3089\u305a\u3001\u6f64\u6ed1\u6cb9\u306e\u7c98\u5ea6\uff08\u6e29\u5ea6\u306b\u3088\u3063\u3066\u5909\u5316\u3059\u308b\uff09\u306b\u3088\u3063\u3066\u5909\u5316\u3059\u308b\u305f\u3081\u3001\u71b1\u554f\u984c\u306f\u81ea\u5df1\u5897\u5e45\u7684\u306b\u306a\u308a\u307e\u3059\u3002\u30c9\u30e9\u30a4\u30d6\u306f\u51b7\u3048\u305f\u72b6\u614b\u3067\u958b\u59cb\u3057\u3001\u30aa\u30a4\u30eb\u7c98\u5ea6\u304c\u9ad8\u304f\u3001\u52b9\u7387\u306f\u4e2d\u7a0b\u5ea6\uff08\u4f8b\u3048\u307060%\uff09\u3067\u3059\u3002\u30cf\u30a6\u30b8\u30f3\u30b0\u304c\u52a0\u71b1\u3055\u308c\u308b\u3068\u3001\u30aa\u30a4\u30eb\u7c98\u5ea6\u304c\u4f4e\u4e0b\u3057\u3001\u6f64\u6ed1\u6cb9\u819c\u539a\u3055\u304c\u6e1b\u5c11\u3057\u3001\u6469\u64e6\u4fc2\u6570\u304c\u5897\u52a0\u3057\u3001\u52b9\u7387\u306f\u3055\u3089\u306b\u4f4e\u4e0b\u3057\uff08\u304a\u305d\u3089\u304f55%\u307e\u3067\uff09\u3001\u767a\u71b1\u91cf\u306f1,200W\u304b\u30891,350W\u306b\u5897\u52a0\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u3001\u71b1\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30eb\u30fc\u30d7\u3067\u3059\u3002 \u52b9\u7387\u30ac\u30a4\u30c9\uff08B4\uff09<\/a>\u305d\u306e\u305f\u3081\u3001\u71b1\u8a08\u7b97\u306f\u5468\u56f2\u6e29\u5ea6\u3067\u306f\u306a\u304f\u3001\u52d5\u4f5c\u6e29\u5ea6\u3067\u884c\u3046\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3059\u3002<\/p>\n

\n

\u30b9\u30c6\u30c3\u30d72\uff1a\u4f4f\u5b85\u306e\u5e73\u8861\u6e29\u5ea6\u3092\u8a08\u7b97\u3059\u308b<\/h2>\n

\u7b50\u4f53\u306f\u3001\u767a\u71b1\u91cf\u3068\u7b50\u4f53\u8868\u9762\u304b\u3089\u306e\u653e\u71b1\u91cf\u304c\u7b49\u3057\u304f\u306a\u3063\u305f\u3068\u304d\u306b\u71b1\u5e73\u8861\u72b6\u614b\u306b\u9054\u3059\u308b\u3002\u5e73\u8861\u6e29\u5ea6\u306f\u3001\u71b1\u640d\u5931\u3001\u71b1\u4f1d\u9054\u4fc2\u6570\u3001\u304a\u3088\u3073\u7b50\u4f53\u8868\u9762\u7a4d\u306b\u3088\u3063\u3066\u6c7a\u307e\u308b\u3002<\/p>\n

\n
\u71b1\u5e73\u8861\u65b9\u7a0b\u5f0f<\/div>\n
\n
\u653e\u71b1\uff08\u81ea\u7136\u5bfe\u6d41\uff09<\/div>\n
Q_reject (W) = h \u00d7 A_housing \u00d7 (T_housing \u2013 T_ambient)<\/div>\n
h = \u5bfe\u6d41\u71b1\u4f1d\u9054\u4fc2\u6570 = 10\uff5e15 W\/m2K (\u81ea\u7136\u5bfe\u6d41)\u300125\uff5e40 W\/m2K (\u5f37\u5236\u7a7a\u6c17)<\/div>\n<\/div>\n
\n
\u5e73\u8861\u6761\u4ef6<\/div>\n
Q_loss = Q_reject<\/div>\n
\u3053\u306e\u65b9\u7a0b\u5f0f\u304c\u6e80\u305f\u3055\u308c\u308b\u3068\u304d\u3001\u6e29\u5ea6\u306f\u5b89\u5b9a\u3059\u308b\u3002<\/div>\n<\/div>\n
\n
\u4f4f\u5b85\u306e\u6e29\u5ea6\u3092\u6c42\u3081\u308b<\/div>\n
T_housing = T_ambient + Q_loss \/ (h x A_housing)<\/div>\n
\u3053\u308c\u306f\u5b9a\u5e38\u72b6\u614b\u306e\u30cf\u30a6\u30b8\u30f3\u30b0\u8868\u9762\u6e29\u5ea6\u3067\u3059<\/div>\n<\/div>\n<\/div>\n

\u8a08\u7b97\u4f8b: \u5165\u529b 3 kW\u3001\u52b9\u7387 60%\u3001Q_loss = 1,200 W\u3002\u30cf\u30a6\u30b8\u30f3\u30b0\u8868\u9762\u7a4d A = 0.08 m2 (\u4e00\u822c\u7684\u306a\u5c0f\u578b\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u30cf\u30a6\u30b8\u30f3\u30b0)\u3002\u81ea\u7136\u5bfe\u6d41 h = 12 W\/m2K\u3002\u5468\u56f2\u6e29\u5ea6 25 \u5ea6 C\u3002T_housing = 25 + 1,200 \/ (12 x 0.08) = 25 + 1,250 = 1,275 \u5ea6 C \u2014 \u660e\u3089\u304b\u306b\u9593\u9055\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5f0f\u306f\u51b7\u5374\u9762\u306e\u307f\u306b\u6709\u52b9\u3067\u3042\u308a\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u8868\u9762\u7a4d\u5168\u4f53\u306b\u306f\u6709\u52b9\u3067\u306f\u306a\u3044\u305f\u3081\u3067\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u6709\u52b9\u653e\u5c04\u9762\u7a4d\u306f\u901a\u5e38\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u8868\u9762\u7a4d\u5168\u4f53\u306e 60-80% \u3067\u3059\u3002\u6709\u52b9\u9762\u7a4d 0.06 m2 \u3067\u518d\u8a08\u7b97: T = 25 + 1,200\/(12 x 0.06) = 25 + 1,667 \u2014 \u660e\u3089\u304b\u306b\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u6b63\u3057\u3044\u89e3\u91c8\uff1a\u3053\u306e\u30c9\u30e9\u30a4\u30d6\u306f\u30010.08\u5e73\u65b9\u30e1\u30fc\u30c8\u30eb\u306e\u7b50\u4f53\u304b\u3089\u81ea\u7136\u5bfe\u6d41\u30671,200W\u306e\u71b1\u3092\u653e\u6563\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u5f37\u5236\u51b7\u5374\u3001\u307e\u305f\u306f\u3088\u308a\u52b9\u7387\u7684\u306a\u30c9\u30e9\u30a4\u30d6\u69cb\u6210\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n

\n

\u71b1\u306b\u95a2\u3059\u308b\u7d4c\u9a13\u5247\uff1a<\/strong> \u81ea\u7136\u5bfe\u6d41\u5f0f\u306e\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u30cf\u30a6\u30b8\u30f3\u30b0\u306f\u3001\u5468\u56f2\u6e29\u5ea6\u3088\u308a1\u2103\u4e0a\u6607\u3059\u308b\u3054\u3068\u306b\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u8868\u9762\u7a4d1\u5e73\u65b9\u30e1\u30fc\u30c8\u30eb\u3042\u305f\u308a\u7d046\uff5e10W\u306e\u71b1\u3092\u653e\u51fa\u3067\u304d\u307e\u3059\u30020.08\u5e73\u65b9\u30e1\u30fc\u30c8\u30eb\u306e\u30cf\u30a6\u30b8\u30f3\u30b0\u304c50\u2103\u4e0a\u6607\u3057\u305f\u5834\u5408\u3001\u653e\u51fa\u3067\u304d\u308b\u71b1\u91cf\u306f0.08 \u00d7 8 \u00d7 50 = 32W\u3068\u306a\u308a\u307e\u3059\u3002Q_loss\u304c\u3053\u306e\u5024\u3092\u5927\u5e45\u306b\u8d85\u3048\u308b\u5834\u5408\u306f\u3001\u5f37\u5236\u51b7\u5374\u307e\u305f\u306f\u3088\u308a\u9ad8\u52b9\u7387\u306e\u30c9\u30e9\u30a4\u30d6\u304c\u5fc5\u8981\u3067\u3059\u30021,200W\u306e\u71b1\u640d\u5931\u306e\u5834\u5408\u3001\u305d\u308c\u3092\u81ea\u7136\u306b\u653e\u51fa\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u6e29\u5ea6\u4e0a\u6607\u306f1,200 \/ (0.08 \u00d7 8) = 1,875\u5ea6\u3068\u306a\u308a\u3001\u7269\u7406\u7684\u306b\u4e0d\u53ef\u80fd\u3067\u3059\u3002\u30c9\u30e9\u30a4\u30d6\u306b\u306f\u5f37\u5236\u51b7\u5374\u307e\u305f\u306f\u306f\u308b\u304b\u306b\u5927\u304d\u306a\u30cf\u30a6\u30b8\u30f3\u30b0\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n

\n

\u52d5\u4f5c\u6e29\u5ea6\u3092\u4e0a\u6607\u307e\u305f\u306f\u4f4e\u4e0b\u3055\u305b\u308b\u8981\u56e0<\/h2>\n
\n
\n
\n

\u30ae\u30a2\u6bd4\uff0f\u30ea\u30fc\u30c9\u89d2<\/h4>\n

+<\/span><\/p>\n<\/div>\n

\u9ad8\u6bd4\u7387\uff08\u30b7\u30f3\u30b0\u30eb\u30b9\u30bf\u30fc\u30c8\u300150:1\uff09\uff1d\u30ea\u30fc\u30c9\u89d2\u304c\u6d45\u3044\uff1d\u52b9\u7387\u304c\u4f4e\u3044\uff1d\u767a\u71b1\u91cf\u304c\u591a\u3044\u3002\u540c\u3058\u6bd4\u7387\u306e\u30de\u30eb\u30c1\u30b9\u30bf\u30fc\u30c8\u30a6\u30a9\u30fc\u30e0\uff1d\u30ea\u30fc\u30c9\u89d2\u304c\u5927\u304d\u3044\uff1d\u52b9\u7387\u304c\u9ad8\u3044\uff1d\u767a\u71b1\u91cf\u304c\u5c11\u306a\u3044\u3002\u71b1\u5b9a\u683c\u304c\u5236\u7d04\u3068\u306a\u308b\u5834\u5408\u3001\u30de\u30eb\u30c1\u30b9\u30bf\u30fc\u30c8\u30a6\u30a9\u30fc\u30e0\u306e\u4ed5\u69d8\u304c\u4e3b\u8981\u306a\u8a2d\u8a08\u8981\u7d20\u3068\u306a\u308b\u3002<\/p>\n<\/div>\n

\n
\n

\u52d5\u4f5c\u901f\u5ea6<\/h4>\n

-\/+<\/span><\/p>\n<\/div>\n

\u30a6\u30a9\u30fc\u30e0\u30b7\u30e3\u30d5\u30c8\u306e\u56de\u8ee2\u901f\u5ea6\u304c\u901f\u304f\u306a\u308b\u3068\u3001\u565b\u307f\u5408\u3044\u90e8\u5206\u306e\u6ed1\u308a\u901f\u5ea6\u304c\u5897\u52a0\u3057\u3001\u6f64\u6ed1\u72b6\u614b\u304cEHD\uff08\u6469\u64e6\u304c\u5c11\u306a\u304f\u3001\u52b9\u7387\u304c\u9ad8\u3044\uff09\u306b\u8fd1\u3065\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u56de\u8ee2\u901f\u5ea6\u304c\u901f\u304f\u306a\u308b\u3068\u5358\u4f4d\u6642\u9593\u3042\u305f\u308a\u306e\u565b\u307f\u5408\u3044\u30b5\u30a4\u30af\u30eb\u6570\u3082\u5897\u3048\u308b\u305f\u3081\u3001\u5358\u4f4d\u6642\u9593\u3042\u305f\u308a\u306e\u767a\u71b1\u91cf\u3082\u5897\u52a0\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u71b1\u5b9a\u683c\u306f\u56de\u8ee2\u901f\u5ea6\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n

\n
\n

\u6cb9\u306e\u7c98\u5ea6<\/h4>\n

–<\/span><\/p>\n<\/div>\n

\u7c98\u5ea6\u304c\u4f4e\u3044\u307b\u3069\u3001\u9ad8\u901f\u8d70\u884c\u6642\u306eEHD\u819c\u5f62\u6210\u304c\u826f\u597d\u306b\u306a\u308a\u3001\u6469\u64e6\u4fc2\u6570\u304c\u4f4e\u4e0b\u3057\u3001\u767a\u71b1\u91cf\u3082\u6e1b\u5c11\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u7c98\u5ea6\u304c\u4f4e\u3059\u304e\u308b\u3068\u3001\u4f4e\u901f\u8d70\u884c\u6642\u306b\u8868\u9762\u304c\u5341\u5206\u306b\u5206\u96e2\u3055\u308c\u305a\u3001\u6df7\u5408\u6f64\u6ed1\u5883\u754c\u9818\u57df\u3068\u306a\u308a\u3001\u6469\u64e6\u304c\u5897\u52a0\u3057\u307e\u3059\u3002\u904b\u8ee2\u6761\u4ef6\u306b\u9069\u3057\u305f\u7c98\u5ea6\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u767a\u71b1\u91cf\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n

\n
\n

PAO\u3068\u9271\u7269\u6cb9\u306e\u6bd4\u8f03<\/h4>\n

-8\uff5e-15\u2103<\/span><\/p>\n<\/div>\n

PAO\u306e\u7c98\u5ea6\u6307\u6570\uff08VI\uff09\u306f150\u4ee5\u4e0a\u3067\u3042\u308b\u306e\u306b\u5bfe\u3057\u3001\u9271\u7269\u6cb9\u306f90\uff5e100\u7a0b\u5ea6\u3067\u3059\u3002\u4f5c\u52d5\u6e29\u5ea6\u306b\u304a\u3044\u3066\u3001\u540c\u3058ISO VG\u30b0\u30ec\u30fc\u30c9\u306ePAO\u306f\u3088\u308a\u9ad8\u3044\u7c98\u5ea6\u3092\u7dad\u6301\u3057\u3001\u3088\u308a\u826f\u597d\u306a\u6cb9\u819c\u3092\u5f62\u6210\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001PAO\u306f\u6469\u64e6\u4fc2\u6570\u3082\u308f\u305a\u304b\u306b\u4f4e\u304f\u306a\u3063\u3066\u3044\u307e\u3059\uff08PAO\u306e\u57fa\u6cb9\u5316\u5b66\u7d44\u6210\u306b\u3088\u308a\u3001\u5883\u754c\u4fdd\u8b77\u6027\u80fd\u304c\u5411\u4e0a\u3057\u3066\u3044\u307e\u3059\uff09\u3002\u9271\u7269\u6cb9\u304b\u3089PAO\u306b\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u3067\u3001\u4f5c\u52d5\u6e29\u5ea6\u30925\uff5e15\u2103\u4e0b\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n

\n
\n

\u30cf\u30a6\u30b8\u30f3\u30b0\u306e\u8868\u9762\u7a4d<\/h4>\n

–<\/span><\/p>\n<\/div>\n

\u30cf\u30a6\u30b8\u30f3\u30b0\u304c\u5927\u304d\u3044\u307b\u3069\u653e\u71b1\u9762\u7a4d\u304c\u5927\u304d\u304f\u306a\u308a\u3001\u5e73\u8861\u6e29\u5ea6\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u71b1\u9650\u754c\u306b\u8fd1\u3044\u99c6\u52d5\u88c5\u7f6e\u306e\u5834\u5408\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u306e\u4ed5\u69d8\u3092\u5927\u304d\u304f\u3059\u308b\uff08\u30ae\u30a2\u306f\u540c\u3058\u3067\u30cf\u30a6\u30b8\u30f3\u30b0\u3092\u5927\u304d\u304f\u3059\u308b\uff09\u3053\u3068\u3067\u3001\u4ed6\u306e\u5909\u66f4\u3092\u52a0\u3048\u308b\u3053\u3068\u306a\u304f\u71b1\u554f\u984c\u3092\u89e3\u6c7a\u3067\u304d\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u30d5\u30a3\u30f3\u304c\u5ef6\u9577\u3055\u308c\u305f\u30cf\u30a6\u30b8\u30f3\u30b0\u3092\u5099\u3048\u305f\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u6e1b\u901f\u6a5f\u3082\u3054\u7528\u610f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n

\n
\n

\u5468\u56f2\u6e29\u5ea6<\/h4>\n

+<\/span><\/p>\n<\/div>\n

\u5468\u56f2\u6e29\u5ea6\u306f\u3001\u7b50\u4f53\u306e\u5e73\u8861\u6e29\u5ea6\u306b\u76f4\u63a5\u52a0\u7b97\u3055\u308c\u307e\u3059\uff08T_housing = T_ambient + delta_T\uff09\u3002\u51ac\u671f\u306b\u306f\u71b1\u4ed5\u69d8\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u30c9\u30e9\u30a4\u30d6\u3067\u3082\u3001\u5468\u56f2\u6e29\u5ea620\u2103\u7528\u306b\u8a2d\u8a08\u3055\u308c\u305f\u3082\u306e\u304c\u590f\u671f\u306b\u5468\u56f2\u6e29\u5ea638\u2103\u306b\u306a\u308b\u3068\u3001\u590f\u671f\u306b\u306f\u6545\u969c\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5468\u56f2\u6e29\u5ea6\u306e\u4e0a\u6607\u306b\u3088\u3063\u3066delta_T\u306e\u8a31\u5bb9\u7bc4\u56f2\u304c\u6d88\u8cbb\u3055\u308c\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<\/div>\n<\/div>\n

\n

\u51b7\u5374\u65b9\u6cd5 \u2015 \u5bb9\u91cf\u3001\u30b3\u30b9\u30c8\u3001\u305d\u3057\u3066\u305d\u308c\u305e\u308c\u306e\u4f7f\u7528\u6642\u671f<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
\u51b7\u5374\u65b9\u6cd5<\/th>\n\u653e\u71b1\u91cf\u306e\u5897\u52a0<\/th>\n\u5c0e\u5165\u30b3\u30b9\u30c8<\/th>\n\u8907\u96d1<\/th>\n\u6700\u9069\u306a\u7528\u9014<\/th>\n<\/tr>\n<\/thead>\n
\u81ea\u7136\u5bfe\u6d41\uff08\u7b50\u4f53\u8868\u9762\uff09<\/td>\n\u30d9\u30fc\u30b9\u30e9\u30a4\u30f3<\/td>\n\u306a\u3057 \u2014 \u6a19\u6e96\u4f9b\u7d66<\/td>\n\u306a\u3057<\/td>\n\u3059\u3079\u3066\u306e\u30c9\u30e9\u30a4\u30d6 - \u5e38\u306b\u6700\u512a\u5148\u4e8b\u9805<\/td>\n<\/tr>\n
PAO\u5408\u6210\u6cb9\u306b\u5207\u308a\u66ff\u3048\u307e\u3057\u3087\u3046<\/td>\n15-25% \u71b1\u767a\u751f\u306e\u4f4e\u6e1b\u3002<\/td>\n\u4f4e\u4fa1\u683c \u2014 \u30aa\u30a4\u30eb\u4ea4\u63db\u8cbb\u7528\u306e\u307f<\/td>\n\u306a\u3057<\/td>\n\u30c9\u30e9\u30a4\u30d6\u304c\u76ee\u6a19\u6e29\u5ea6\u3088\u308a5\uff5e15\u2103\u9ad8\u3044\u6e29\u5ea6\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308b<\/td>\n<\/tr>\n
\u591a\u6761\u59cb\u52d5\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\uff08\u9ad8\u52b9\u7387\uff09<\/td>\n20-40% \u71b1\u767a\u751f\u306e\u4f4e\u6e1b\u3002<\/td>\n\u4e2d\u901f \u2014 \u30ae\u30a2\u30bb\u30c3\u30c8\u306e\u5909\u66f4<\/td>\n\u30c7\u30b6\u30a4\u30f3\u5909\u66f4<\/td>\n\u71b1\u9650\u754c\u3067\u99c6\u52d5\u3002\u52b9\u7387\u6539\u5584\u304c\u6700\u512a\u5148\u4e8b\u9805\u3002<\/td>\n<\/tr>\n
\u30cf\u30a6\u30b8\u30f3\u30b0\u306b\u53d6\u308a\u4ed8\u3051\u3089\u308c\u305f\u5f37\u5236\u7a7a\u51b7\u30d5\u30a1\u30f3<\/td>\n\u81ea\u7136\u5bfe\u6d41\u3068\u6bd4\u8f03\u3057\u30662\uff5e4\u500d\u306e\u6d88\u6563\u52b9\u679c<\/td>\n\u4e2d\u578b \u2014 \u30d5\u30a1\u30f3 + \u53d6\u308a\u4ed8\u3051<\/td>\n\u4f4e - \u30d5\u30a1\u30f3\u30d1\u30ef\u30fc<\/td>\n20-50%\u306e\u904e\u5270\u767a\u71b1\u3092\u4f34\u3046\u30c9\u30e9\u30a4\u30d6<\/td>\n<\/tr>\n
\u30aa\u30a4\u30eb\u51b7\u5374\u30b3\u30a4\u30eb\uff08\u6c34\u51b7\u5f0f\u307e\u305f\u306f\u7a7a\u51b7\u5f0f\uff09<\/td>\n\u81ea\u7136\u5bfe\u6d41\u3068\u6bd4\u8f03\u3057\u30665\uff5e10\u500d\u306e\u6d88\u6563\u52b9\u679c<\/td>\n\u9ad8\u5727\u914d\u7ba1\u3001\u71b1\u4ea4\u63db\u5668<\/td>\n\u4e2d\u7a0b\u5ea6 - \u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u5fc5\u8981<\/td>\n\u9ad8\u51fa\u529b\u99c6\u52d5\u88c5\u7f6e\u3001\u9023\u7d9a\u7523\u696d\u7528\u9014<\/td>\n<\/tr>\n
\u5927\u578b\u30cf\u30a6\u30b8\u30f3\u30b0\uff0f\u30d5\u30a3\u30f3\u4ed8\u304d\u30cf\u30a6\u30b8\u30f3\u30b0<\/td>\n1.5\uff5e2\u500d\u306e\u62d2\u5426\u9818\u57df<\/td>\n\u4e2d\u898f\u6a21 \u2014 \u4f4f\u5b85\u306e\u5909\u5316<\/td>\n\u4f4e\u3044<\/td>\n\u9069\u5ea6\u306a\u4f59\u71b1\u3067\u8d70\u884c\u3059\u308b\u3002\u30b9\u30da\u30fc\u30b9\u304c\u8a31\u305b\u3070<\/td>\n<\/tr>\n
\u51b7\u5374\u5668\u4ed8\u304d\u5faa\u74b0\u30aa\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0<\/td>\n10\uff5e20\u500d\u306e\u9664\u53bb\u80fd\u529b<\/td>\n\u9ad8\u5727 - \u30dd\u30f3\u30d7\u3001\u8caf\u6c34\u69fd\u3001\u30af\u30fc\u30e9\u30fc<\/td>\n\u9ad8\u3044 \u2014 \u30aa\u30a4\u30eb\u56de\u8def\u5168\u4f53<\/td>\n\u8d85\u9ad8\u51fa\u529b\u99c6\u52d5\u88c5\u7f6e\u3001\u5bc6\u9589\u578b\u30a6\u30a9\u30fc\u30e0\u6e1b\u901f\u6a5f<\/td>\n<\/tr>\n
\u5468\u56f2\u6e29\u5ea6\u3092\u4e0b\u3052\u308b<\/td>\n\u5e73\u8861\u72b6\u614b\u304b\u3089\u306e\u76f4\u63a5\u7684\u306a\u6e1b\u7b97<\/td>\n\u53ef\u5909\u5f0f - \u5fc5\u8981\u306b\u5fdc\u3058\u3066HVAC<\/td>\n\u4f4e\u3044<\/td>\n\u3059\u3079\u3066\u306e\u30c9\u30e9\u30a4\u30d6 \u2014 \u591a\u304f\u306e\u5834\u5408\u3001\u6700\u521d\u306e\u884c\u52d5\u304c\u6700\u3082\u30b7\u30f3\u30d7\u30eb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

\u4f5c\u52d5\u6e29\u5ea6\u306b\u304a\u3051\u308b\u30aa\u30a4\u30eb\u7c98\u5ea6 \u2015 \u91cd\u8981\u306a\u5909\u6570<\/h2>\n

\u30a6\u30a9\u30fc\u30e0\u30ae\u30a2\u99c6\u52d5\u88c5\u7f6e\u306e\u71b1\u6027\u80fd\u306f\u3001\u4f5c\u52d5\u6e29\u5ea6\u306b\u304a\u3051\u308b\u6cb9\u306e\u7c98\u5ea6\u306b\u5927\u304d\u304f\u5de6\u53f3\u3055\u308c\u3001\u5468\u56f2\u6e29\u5ea6\u306b\u304a\u3051\u308b\u7c98\u5ea6\u306b\u306f\u4f9d\u5b58\u3057\u307e\u305b\u3093\u300240\u2103\u306b\u304a\u3051\u308b\u7c98\u5ea6\uff08460cSt\uff09\u306b\u57fa\u3065\u3044\u3066ISO VG 460\u9271\u7269\u6cb9\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u5185\u90e8\u306e\u4f5c\u52d5\u6e29\u5ea6\u306b\u304a\u3051\u308b\u5b9f\u969b\u306e\u6cb9\u306e\u6027\u80fd\u3092\u8aa4\u3063\u3066\u8868\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
\u30aa\u30a4\u30eb\u306e\u7a2e\u985e\uff0f\u30b0\u30ec\u30fc\u30c9<\/th>\n40\u2103\u306b\u304a\u3051\u308b\u7c98\u5ea6<\/th>\n60\u2103\u306b\u304a\u3051\u308b\u7c98\u5ea6<\/th>\n80\u2103\u306b\u304a\u3051\u308b\u7c98\u5ea6<\/th>\n\u7c98\u5ea6\u6307\u6570<\/th>\n\u9069\u5207\u306a\u7bc4\u56f2<\/th>\n<\/tr>\n<\/thead>\n
\u30df\u30cd\u30e9\u30ebISO VG 220<\/td>\n220 cSt<\/td>\n85\u30bb\u30f3\u30c8<\/td>\n38\u30bb\u30f3\u30c8<\/td>\n~95<\/td>\n\u5468\u56f2\u6e29\u5ea6\uff5e55\u2103\u306e\u7b50\u4f53<\/td>\n<\/tr>\n
\u30df\u30cd\u30e9\u30ebISO VG 460<\/td>\n460 cSt<\/td>\n155 cSt<\/td>\n65\u30bb\u30f3\u30c8<\/td>\n~95<\/td>\n\u5468\u56f2\u6e29\u5ea6\uff5e65\u2103\u306e\u7b50\u4f53<\/td>\n<\/tr>\n
\u30df\u30cd\u30e9\u30ebISO VG 680<\/td>\n680 cSt<\/td>\n215 cSt<\/td>\n90 cSt<\/td>\n~95<\/td>\n\u5468\u56f2\u6e29\u5ea6\uff5e70\u2103\u306e\u7b50\u4f53<\/td>\n<\/tr>\n
PAO ISO VG 220 (VI=155)<\/td>\n220 cSt<\/td>\n110 cSt<\/td>\n58\u30bb\u30f3\u30c8<\/td>\n155<\/td>\n70\u2103\u307e\u3067\u306e\u4f4e\u6e29\u30cf\u30a6\u30b8\u30f3\u30b0<\/td>\n<\/tr>\n
PAO ISO VG 460 (VI=155)<\/td>\n460 cSt<\/td>\n240 cSt<\/td>\n130 cSt<\/td>\n155<\/td>\n\u5468\u56f2\u6e29\u5ea6\uff5e85\u2103\u306e\u7b50\u4f53<\/td>\n<\/tr>\n
PAO ISO VG 680 (VI=155)<\/td>\n680 cSt<\/td>\n360 cSt<\/td>\n200 cSt<\/td>\n155<\/td>\nUp to 95 C housing<\/td>\n<\/tr>\n
Ester ISO VG 460 (VI=170)<\/td>\n460 cSt<\/td>\n265 cSt<\/td>\n150 cSt<\/td>\n170<\/td>\nHigh-temperature applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Minimum required viscosity for adequate EHD film in worm gear applications: approximately 60-120 cSt at operating temperature, depending on sliding velocity and module. At sliding velocity 3 m\/s and Module 5: minimum approximately 80 cSt at operating temperature. Mineral ISO VG 460 at 80 degrees C provides only 65 cSt — below the minimum. PAO ISO VG 460 at 80 degrees C provides 130 cSt — above the minimum with margin.<\/p>\n

\n

Korea Ever-Power — Products for Thermally Demanding Applications<\/h2>\n\n\n\n\n
\"\"<\/td>\n\"\"<\/td>\n\"\"<\/td>\n<\/tr>\n
\"\"<\/td>\n\"\"<\/td>\n\"\"<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Thermal Rating Decision Path — What to Do When the Drive is Too Hot<\/h2>\n
\n
\n
1<\/div>\n
Measure ambient temperature<\/strong> Is ambient above the design ambient for the drive? Add forced ventilation to the installation space before any drive modification.<\/span><\/div>\n<\/div>\n
\n
2<\/div>\n
Calculate Q_loss<\/strong> Q_loss = P_input x (1 – eta). Is Q_loss within the housing thermal rating? Compare to manufacturer thermal power curve or calculate from surface area.<\/span><\/div>\n<\/div>\n
\n
3<\/div>\n
Check oil viscosity grade<\/strong> Is current oil viscosity grade correct for operating temperature? Switch to PAO if using mineral oil — reduces operating temperature 8-15 degrees C without any mechanical change.<\/span><\/div>\n<\/div>\n
\n
4<\/div>\n
Check oil level<\/strong> Low oil level reduces heat transfer from mesh to housing. Correct to the specified level.<\/span><\/div>\n<\/div>\n
\n
5<\/div>\n
Calculate if multi-start worm helps<\/strong> At same ratio: double-start worm improves efficiency from ~62% to ~75% — reduces Q_loss from 38% to 25% of input power. Calculate new equilibrium temperature with improved efficiency.<\/span><\/div>\n<\/div>\n
\n
6<\/div>\n
Specify forced cooling if still over limit<\/strong> If all above actions are insufficient: forced air fan on housing (2-4x rejection capacity), or specify an enclosed worm reducer with integrated oil cooling for larger drives.<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n
\n
\n
\n

\u97d3\u56fd\u30a8\u30d0\u30fc\u30d1\u30ef\u30fc<\/span><\/p>\n

Worm Gear Products for Thermally Demanding Applications<\/h2>\n<\/div>\n
\n
\n
\"Alloy<\/div>\n
\n
Multi-Start Available \/ PAO Specification \/ Thermal Analysis<\/div>\n
Alloy Steel Worm Gear Set — Thermal-Optimised Specification<\/div>\n
When a worm gear drive is approaching its thermal limit, two specification changes available from Korea Ever-Power can significantly reduce heat generation: (1) multi-start worm (z1=2 or z1=4) at the same gear ratio, increasing efficiency by 10-20 percentage points and reducing heat generation proportionally; and (2) PAO synthetic lubricant specification, with the lubrication data sheet documenting the operating viscosity at the calculated housing equilibrium temperature. For new drive specifications where thermal performance is a concern, Korea Ever-Power calculates the estimated housing equilibrium temperature at order placement — providing efficiency estimate, heat generation at rated power, and estimated temperature rise at the specified operating conditions. If the calculation shows the drive is at or near its thermal limit, multi-start or PAO specification is recommended before the order is placed.<\/div>\n

\u4ed5\u69d8\u3092\u898b\u308b<\/a><\/p>\n<\/div>\n<\/div>\n

\n
\"Custom<\/div>\n
\n
Thermal Calculation Included \/ Custom Ratio \/ Full Documentation<\/div>\n
Custom Worm Gear Set — With Thermal Performance Analysis<\/div>\n
For drive applications where continuous duty, high load factor, or elevated ambient temperature makes thermal performance a specification concern, Korea Ever-Power includes a thermal performance estimate as part of the specification confirmation for every custom gear set order. The estimate covers: forward efficiency at the specified operating point; heat generation at rated and maximum power; estimated housing equilibrium temperature based on standard housing surface area and natural convection; and recommendation for cooling method if the equilibrium temperature exceeds 80 degrees C. This analysis is performed from the application parameters provided at order placement (input power, motor speed, ambient temperature, duty cycle, housing configuration) and documented in the order confirmation.<\/div>\n

\u4ed5\u69d8\u3092\u898b\u308b<\/a><\/p>\n<\/div>\n<\/div>\n

\n
\"Enclosed<\/div>\n
\n
Worm Reducer \/ Enclosed \/ Cooling Options<\/div>\n
Enclosed Worm Gear Reducer — Thermal-Managed<\/div>\n
For applications requiring more thermal management capacity than a bare gear set in an open housing can provide, Korea Ever-Power’s enclosed worm gear reducer range incorporates design features for improved thermal performance: finned aluminium housing for increased surface area and convection; provision for forced air cooling fan mounting; and oil cooling coil options for high-power installations. The enclosed reducer provides a complete, oil-filled, sealed drive assembly with documented thermal power rating at specified ambient temperature. Thermal power rating is the maximum continuous power at which the housing stays below the lubricant’s temperature limit without external cooling. For drives above the thermal power rating, specification of forced air or oil cooling is included in the delivery documentation. See wormgearreduer.top for the full enclosed reducer range.<\/div>\n

\u4ed5\u69d8\u3092\u898b\u308b<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\n
\n

Thermal FAQ<\/span><\/p>\n

Worm Gear Thermal Management — Questions from Drive System Engineers<\/h2>\n<\/div>\n
\nWhat is the maximum safe operating temperature for a worm gear drive, and how is the limit determined?+<\/span><\/summary>\n
\n

The maximum safe operating temperature is determined by three simultaneous limits, and the lowest of the three governs. First, the lubricant thermal stability limit: mineral oil begins to oxidise rapidly above 70 degrees C; PAO synthetic is stable to approximately 100 degrees C; ester-based oils are stable to 110-120 degrees C. Second, the seal elastomer temperature limit: standard NBR seals operate to 100 degrees C continuous; FKM (Viton) seals to 150 degrees C. Third, the bronze wheel temperature limit: sustained temperatures above 150 degrees C can anneal the cold-worked surface layer of the tin bronze wheel, reducing surface hardness and accelerating wear. In practice, the lubricant thermal stability limit governs for mineral oil (70 degrees C), and PAO synthetic allows operation to approximately 100 degrees C. A target housing surface temperature of 70 degrees C maximum is appropriate for mineral oil and 85 degrees C for PAO in continuous industrial service.<\/p>\n<\/div>\n<\/details>\n

\nMy drive runs at 65 degrees C in winter but 82 degrees C in summer. Should I specify cooling for summer operation only?+<\/span><\/summary>\n
\n

The correct approach for seasonally variable temperature applications is to specify the drive for summer worst-case and not add seasonal cooling systems that require seasonal maintenance. Options: (1) switch to PAO synthetic oil, which reduces operating temperature by 8-15 degrees C — this may bring the 82-degree summer peak down to 68-74 degrees C, within acceptable range; (2) specify forced air cooling (axial fan on the housing) that can be left running year-round without any seasonal intervention; (3) if the drive is in a machine room, investigate improving summer ventilation — bringing the ambient from 35 degrees C to 28 degrees C has the same effect as adding 7 degrees C of drive cooling. A seasonally switched cooling system (cooling only in summer) requires reliable operation and maintenance, and if it fails in summer, the drive fails.<\/p>\n<\/div>\n<\/details>\n

\nCan I use a lower viscosity oil to reduce friction and lower operating temperature?+<\/span><\/summary>\n
\n

Lower viscosity reduces the viscous drag component of friction, which can reduce operating temperature slightly — but this effect is secondary to the lubricant film thickness effect. If viscosity is too low, the EHD film at the mesh contact becomes inadequate, and boundary lubrication friction increases, potentially raising operating temperature above what the higher-viscosity oil produced. The correct approach: specify the minimum viscosity grade that provides adequate EHD film at operating temperature, and switch to PAO (high VI) rather than lower VG grade to get the viscosity stability benefit without the film thickness reduction. Correct minimum viscosity at operating temperature: 60-120 cSt depending on sliding velocity and module. Do not reduce viscosity grade below the minimum required for film formation.<\/p>\n<\/div>\n<\/details>\n

\nWe are designing a new machine and need to confirm the thermal rating of the worm gear drive before finalizing the housing. What parameters does Korea Ever-Power need for a thermal analysis?+<\/span><\/summary>\n
\n

Korea Ever-Power can provide a thermal analysis estimate for new machine designs based on: input power (kW or W), worm shaft speed (RPM), gear ratio and start count (to calculate efficiency), ambient temperature range (minimum and maximum), duty cycle (hours per day, load factor during operation), and housing configuration (whether enclosed or semi-enclosed, mounting orientation). With these parameters, Korea Ever-Power calculates estimated efficiency, heat generation at rated power, and whether the drive is within natural convection thermal rating or requires forced cooling. This analysis is provided as part of the specification confirmation for new drive designs at no charge. Provide the parameters at initial enquiry for the analysis to be included in the quotation response.<\/p>\n<\/div>\n<\/details>\n

\nWhy does a worm gear drive sometimes get hotter after the first oil change than it was before?+<\/span><\/summary>\n
\n

This is the running-in completion effect. During the first 50-100 hours of operation, the tooth flanks are conforming — micro-asperities are cold-working and the contact area is growing toward the full line contact design geometry. During this period, friction at the mesh is slightly higher than the steady-state design value, but the effect is partially masked by the fact that the running-in oil (if it has accumulated wear debris) has added solid particles that slightly increase the effective viscosity. When the running-in oil is changed for fresh clean oil, the viscosity is restored to the grade specification, which may be slightly lower than the debris-thickened running-in oil, resulting in slightly less viscous film thickness and marginally higher friction. This is a transient effect that resolves within 10-20 operating hours as the fresh oil distributes and the contact geometry stabilises.<\/p>\n<\/div>\n<\/details>\n

\nIs it possible to estimate worm gear efficiency from housing temperature measurement without opening the drive?+<\/span><\/summary>\n
\n

Yes, with reasonable accuracy. Measure: housing surface temperature T_housing, ambient temperature T_ambient, motor input power P_input (from motor current x voltage x power factor). Calculate: Q_loss = P_input x (1 – eta) = h x A x (T_housing – T_ambient). From the housing surface area A (estimated from housing dimensions) and the natural convection coefficient h (estimated as 10-15 W\/m2K for natural convection, 25-40 W\/m2K for forced air convection), solve for eta: eta = 1 – h x A x (T_housing – T_ambient) \/ P_input. This method is accurate to +\/- 5-10 percentage points for steady-state operation and provides a useful indication of whether efficiency is within the expected range for the drive specification.<\/p>\n<\/div>\n<\/details>\n

\nOur worm gear drive is enclosed in a machine cabinet with limited ventilation. What cooling approach is most practical?+<\/span><\/summary>\n
\n

For a drive in an enclosed cabinet, the options in order of implementation simplicity: (1) add ventilation holes with filtered covers to the cabinet (bringing ambient air into contact with the housing); (2) add a small axial fan inside the cabinet to circulate air over the housing surface (low power, low noise, effective for moderate heat loads); (3) add a heat exchanger panel to the cabinet (bringing the cabinet interior to ambient temperature); (4) mount the worm gear drive outside the cabinet on the exterior wall, where it has direct ambient air exposure. For drives in thermally critical cabinet installations, specifying an enclosed worm gear reducer with integrated thermal management is the most reliable approach — the reducer housing design accounts for the enclosed installation.<\/p>\n<\/div>\n<\/details>\n

\nWhat is the difference between thermal power rating and mechanical power rating for a worm gear reducer?+<\/span><\/summary>\n
\n

Mechanical power rating is the maximum torque\/power the gear set can transmit without mechanical failure (tooth fracture, scuffing, pitting fatigue). Thermal power rating is the maximum power the drive can transmit continuously while maintaining housing temperature below the lubricant temperature limit under stated ambient conditions. For standard worm gear reducers at typical ratios, the thermal power rating is often lower than the mechanical power rating — meaning the drive reaches its thermal limit before its mechanical limit in continuous operation. Intermittent duty (where the duty cycle allows the housing to cool during idle periods) allows operation above the continuous thermal rating, because the time-averaged heat generation is lower than the peak instantaneous heat generation. Thermal power rating should always be checked for continuous-duty worm gear drives alongside the mechanical torque rating.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\n

Get a Thermal Analysis for Your Worm Gear Drive<\/h2>\n

Provide input power, shaft speed, ambient temperature range, duty cycle, and housing configuration. Korea Ever-Power calculates the estimated equilibrium housing temperature and returns a specification recommendation — including whether PAO, multi-start, or forced cooling is needed — with the quotation.<\/p>\n

\u88fd\u54c1\u3092\u95b2\u89a7\u3059\u308b<\/a><\/p>\n<\/div>\n<\/div>\n

\u7de8\u96c6\u8005: Cxm<\/p>","protected":false},"excerpt":{"rendered":"

Practical Guide Series \u00b7 Thermal Engineering Worm Gear Thermal Management — Calculating Equilibrium Temperature, Identifying Thermal Limit, and Specifying Cooling Every worm gear drive has a thermal rating as well as a mechanical rating. Most engineers focus on the mechanical side. The drive that fails from overheating in summer was within mechanical spec — but was operating above thermal equilibrium without anyone calculating the heat balance. Thermal Calculation FrameworkEquilibrium Temperature FormulaCooling Method ComparisonOil Viscosity Impact \u2699 Korea Ever-Power Worm Gear Co., LtdAnsan-si, Gyeonggi-do, Koreasales@wormwheelgear.top The Drive That Failed in Summer but Not in Winter A Korean printing plant installed a new worm gear drive on a roll-handling system in October. […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[4774],"tags":[1394,1399],"class_list":["post-1933","post","type-post","status-publish","format-standard","hentry","category-worm-gear","tag-worm-gear","tag-worm-gear-worm"],"_links":{"self":[{"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/posts\/1933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/comments?post=1933"}],"version-history":[{"count":2,"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/posts\/1933\/revisions"}],"predecessor-version":[{"id":1935,"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/posts\/1933\/revisions\/1935"}],"wp:attachment":[{"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/media?parent=1933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/categories?post=1933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wormwheelgear.top\/ja\/wp-json\/wp\/v2\/tags?post=1933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}