{"id":2048,"date":"2026-04-10T09:07:01","date_gmt":"2026-04-10T09:07:01","guid":{"rendered":"https:\/\/helicalcutgears.top\/?post_type=product&p=2048"},"modified":"2026-04-10T09:07:01","modified_gmt":"2026-04-10T09:07:01","slug":"heavy-machinery-double-helical-gear-cast-steel-soft-tooth-flank-qt-iso-grade-8-9","status":"publish","type":"product","link":"https:\/\/helicalcutgears.top\/ja\/product\/heavy-machinery-double-helical-gear-cast-steel-soft-tooth-flank-qt-iso-grade-8-9\/","title":{"rendered":"\u91cd\u6a5f\u7528\u30c0\u30d6\u30eb\u30d8\u30ea\u30ab\u30eb\u30ae\u30a2 - \u92f3\u92fc\u88fd\u3001\u8edf\u8cea\u6b6f\u9762\u3001QT\u3001ISO\u30b0\u30ec\u30fc\u30c98\uff5e9"},"content":{"rendered":"
\n

\u91cd\u6a5f\u7528\u30c0\u30d6\u30eb\u30d8\u30ea\u30ab\u30eb\u30ae\u30a2 \u2014 \u6982\u8981<\/h2>\n

When a gear is large enough that the blank weight approaches or exceeds five tonnes, the forging route that is standard for small and medium industrial gears becomes impractical or prohibitively expensive. The largest gears in the world \u2014 ball mill ring gears three metres in diameter, cement mill main pinions with face widths of 700mm, ship propulsion gears transmitting 20,000+ kW \u2014 are manufactured from cast steel blanks, where the complexity of the part’s final shape can be incorporated into the mold rather than laboriously machined from a forged cylinder. Korea Ever-Power Worm Gear Co.,Ltd supplies \u91cd\u6a5f\u7528\u4e8c\u91cd\u3089\u305b\u3093\u6b6f\u8eca<\/strong> \u7279\u6ce8\u306e\u92f3\u92fc\u30b0\u30ec\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3001\u713c\u304d\u5165\u308c\u713c\u623b\u3057\u51e6\u7406\u3092\u65bd\u3057\u3066\u6b6f\u9762\u3092\u8edf\u3089\u304b\u304f\u3057\u3001ISO\u30b0\u30ec\u30fc\u30c98\uff5e9\u306e\u7cbe\u5ea6\u3067\u30db\u30d6\u52a0\u5de5\u3092\u65bd\u3057\u3001\u6700\u3082\u8981\u6c42\u306e\u53b3\u3057\u3044\u5927\u898f\u6a21\u7523\u696d\u7528\u99c6\u52d5\u7528\u9014\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002<\/p>\n

\"\u30c0\u30d6\u30eb\u30d8\u30ea\u30ab\u30eb\u30ae\u30a2\"<\/p>\n

The double helical (herringbone) tooth form is particularly well-suited to heavy machinery applications because it eliminates the axial thrust force that a single helical gear of equivalent size and helix angle would transmit to the shaft and bearings. For a large mill drive gear transmitting several megawatts, this axial force would be substantial \u2014 requiring large, expensive thrust bearings or roller-type spherical bearings at both ends of the gear shaft. The double helical configuration removes this requirement entirely, allowing simpler bearing arrangements in very large gearbox housings where bearing accessibility and replacement cost are significant lifecycle concerns. Korea Ever-Power’s \u91cd\u6a5f\u7528\u4e8c\u91cd\u3089\u305b\u3093\u6b6f\u8eca<\/strong> are custom-manufactured to each client’s drawing \u2014 module, tooth count, helical angle, pressure angle, face width, bore, and keyway dimensions are all specified by the customer. International steel grade cross-reference is supported for customers specifying materials in ASTM, DIN, JIS, or ISO standards.<\/p>\n

\u6280\u8853\u4ed5\u69d8<\/h2>\n

\u88fd\u54c1\u4ed5\u69d8 \u2014 \u91cd\u6a5f\u7528\u30c0\u30d6\u30eb\u30d8\u30ea\u30ab\u30eb\u30ae\u30a2<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n\u4fa1\u5024<\/th>\n<\/tr>\n
\u30ae\u30a2\u30bf\u30a4\u30d7<\/td>\n\u30c0\u30d6\u30eb\u30d8\u30ea\u30ab\u30eb\u30ae\u30a2\uff08\u30d8\u30ea\u30f3\u30dc\u30fc\u30f3\u30ae\u30a2\uff09<\/td>\n<\/tr>\n
\u6750\u6599<\/td>\n\u92f3\u92fc\uff08\u56f3\u9762\u306b\u57fa\u3065\u304f\u7279\u6ce8\u30b0\u30ec\u30fc\u30c9 \u2015 ZG35CrMo\u3001ZG42CrMo\u3001ZG310-570\u3001\u307e\u305f\u306f\u540c\u7b49\u54c1\uff09<\/td>\n<\/tr>\n
\u786c\u5ea6<\/td>\n\u6b6f\u9762\u8edf\u5316\uff08QT\uff5e\u6307\u5b9a\u3055\u308c\u305fHB\u7bc4\u56f2\uff09<\/td>\n<\/tr>\n
\u71b1\u51e6\u7406<\/td>\n\u713c\u5165\u308c\u713c\u623b\u3057\uff08\u5168\u4f53\u713c\u5165\u308c\uff09\uff1b\u8868\u9762\u786c\u5ea6\u30aa\u30d7\u30b7\u30e7\u30f3\u3042\u308a<\/td>\n<\/tr>\n
\u30ae\u30a2\u88fd\u9020<\/td>\n\u6b6f\u8eca\u30db\u30d6\u76e4\u52a0\u5de5\uff08\u7814\u524a\u306a\u3057 - \u30db\u30d6\u76e4\u4ed5\u4e0a\u3052\uff09<\/td>\n<\/tr>\n
\u5727\u529b\u89d2<\/td>\n20\u00b0\uff08\u6a19\u6e96\uff09\uff1b\u30ab\u30b9\u30bf\u30e0\u89d2\u5ea6\u3082\u53ef\u80fd<\/td>\n<\/tr>\n
\u3089\u305b\u3093\u89d2<\/td>\n\u7279\u6ce8\u54c1\uff08\u56f3\u9762\u306b\u57fa\u3065\u304d\u6307\u5b9a\uff09<\/td>\n<\/tr>\n
\u30ae\u30a2\u7cbe\u5ea6\u7b49\u7d1a<\/td>\n\u30b0\u30ec\u30fc\u30c98\uff5e9\uff08ISO 1328\uff09<\/td>\n<\/tr>\n
\u9069\u7528\u7bc4\u56f2<\/td>\n\u30dc\u30fc\u30eb\u30df\u30eb\u3001\u30bb\u30e1\u30f3\u30c8\u30df\u30eb\u3001\u9271\u77f3\u51e6\u7406\u30df\u30eb\u3001\u8239\u8236\u63a8\u9032\u88c5\u7f6e\u3001\u30aa\u30d5\u30b7\u30e7\u30a2\u30a6\u30a4\u30f3\u30c1\u3001\u5927\u578b\u7523\u696d\u7528\u30ae\u30a2\u30dc\u30c3\u30af\u30b9<\/td>\n<\/tr>\n
\u6700\u5c0f\u6ce8\u6587\u6570\u91cf<\/td>\n1\u30bb\u30c3\u30c8\uff08\u3054\u6ce8\u6587\u3054\u3068\u306b\u5b8c\u5168\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\uff09<\/td>\n<\/tr>\n
\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0<\/td>\n\u91cf\u7523\u306e\u5834\u5408\u306f15\uff5e20\u55b6\u696d\u65e5\u3001\u7279\u6ce8\u54c1\u306f\u8981\u76f8\u8ac7<\/td>\n<\/tr>\n
\u652f\u6255\u3044\u6761\u4ef6<\/td>\nEXW\u3001FOB\u3001CIF\u6761\u4ef6\u53ef\u3002T\/T\u304a\u3088\u3073L\/C\u3082\u53ef\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u4e00\u822c\u7684\u306a\u92f3\u92fc\u5408\u91d1\u7b49\u7d1a\u306e\u76f8\u5f53\u54c1<\/p>\n

\n\n\n\n\n\n\n\n
GB\uff08\u4e2d\u56fd\uff09<\/th>\nISO<\/th>\nASTM<\/th>\nJIS<\/th>\nDIN<\/th>\n<\/tr>\n
42CrMo<\/td>\n42CrMo4<\/td>\n4140<\/td>\nSCM440<\/td>\n42CrMo4<\/td>\n<\/tr>\n
40CrNiMoA<\/td>\n\u2014<\/td>\n4340<\/td>\nSNCM439<\/td>\n40NiCrMo6<\/td>\n<\/tr>\n
20CrNiMo<\/td>\n20CrNiMo2<\/td>\n8720<\/td>\nSNCM220<\/td>\n21NiCrMo2<\/td>\n<\/tr>\n
20CrNi2Mo<\/td>\n20NiCrMo7<\/td>\n4320<\/td>\nSNCM420<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u8d85\u5927\u578b\u4e8c\u91cd\u30d8\u30ea\u30ab\u30eb\u30ae\u30a2\u306b\u92f3\u92fc\u3092\u4f7f\u7528\u3059\u308b\u7406\u7531<\/h2>\n

\"\u30dc\u30fc\u30eb\u30df\u30eb\u304a\u3088\u3073\u91cd\u5de5\u696d\u7528\u30ae\u30a2\u30dc\u30c3\u30af\u30b9\u5411\u3051\u5927\u578b\u92f3\u92fc\u88fd\u4e8c\u91cd\u3089\u305b\u3093\u30ae\u30a2\u306e\u88fd\u9020\"<\/p>\n

\u6b6f\u8eca\u30d6\u30e9\u30f3\u30af\u6750\u3068\u3057\u3066\u92f3\u92fc\u304c\u935b\u92fc\u3088\u308a\u3082\u5b9f\u7528\u7684\u306b\u306a\u308b\u95be\u5024\u306f\u3001\u6b6f\u8eca\u672c\u4f53\u306e\u5f62\u72b6\u306b\u3082\u3088\u308a\u307e\u3059\u304c\u3001\u5b8c\u6210\u91cd\u91cf\u304c\u7d042\uff5e5\u30c8\u30f3\u3067\u3059\u3002\u3053\u306e\u95be\u5024\u4ee5\u4e0b\u3067\u306f\u3001\u935b\u9020\u306e\u65b9\u304c\u7d50\u6676\u7c92\u306e\u914d\u5217\u3068\u75b2\u52b4\u8010\u6027\u306b\u512a\u308c\u3066\u304a\u308a\u3001\u9244\u9053\u3001\u822a\u7a7a\u5b87\u5b99\u3001\u6d77\u6d0b\u306a\u3069\u3001\u9ad8\u30b5\u30a4\u30af\u30eb\u304b\u3064\u5b89\u5168\u6027\u304c\u91cd\u8996\u3055\u308c\u308b\u3042\u3089\u3086\u308b\u7528\u9014\u3067\u597d\u307e\u308c\u307e\u3059\u3002\u3053\u306e\u95be\u5024\u3092\u8d85\u3048\u308b\u3068\u3001\u935b\u9020\u30d7\u30ec\u30b9\u306e\u80fd\u529b\u3001\u53d6\u308a\u6271\u3044\u3084\u3059\u3055\u3001\u7d4c\u6e08\u6027\u304b\u3089\u92f3\u9020\u304c\u6709\u5229\u306b\u306a\u308a\u307e\u3059\u3002\u7279\u306b\u3001\u30d8\u30ea\u30f3\u30dc\u30fc\u30f3\u6b6f\u5f62\u306b\u3088\u3063\u3066\u65e2\u306b\u5927\u578b\u306e\u30d6\u30e9\u30f3\u30af\u6750\u304c\u3055\u3089\u306b\u8907\u96d1\u5316\u3059\u308b\u4e8c\u91cd\u3089\u305b\u3093\u6b6f\u8eca\u3067\u306f\u3001\u92f3\u9020\u304c\u6709\u5229\u3067\u3059\u3002<\/p>\n

\u5927\u898f\u6a21\u6b6f\u8eca\u751f\u7523\u306b\u304a\u3051\u308b\u92f3\u92fc\u306e\u5229\u70b9<\/h3>\n