{"id":2039,"date":"2026-04-10T08:59:50","date_gmt":"2026-04-10T08:59:50","guid":{"rendered":"https:\/\/helicalcutgears.top\/?post_type=product&p=2039"},"modified":"2026-04-10T08:59:51","modified_gmt":"2026-04-10T08:59:51","slug":"high-speed-train-locomotive-hard-tooth-flank-helical-gear-din-class-6-for-traction-drives","status":"publish","type":"product","link":"https:\/\/helicalcutgears.top\/nl\/product\/high-speed-train-locomotive-hard-tooth-flank-helical-gear-din-class-6-for-traction-drives\/","title":{"rendered":"Hogesnelheidstrein locomotief harde tand flank spiraalvormig tandwiel \u2014 DIN klasse 6 voor tractieaandrijvingen"},"content":{"rendered":"
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High Speed Train Locomotive Hard Tooth Flank Helical Gear \u2014 Overview<\/h2>\n

The traction gearbox of a high-speed railway vehicle faces engineering demands that no other rotating machinery category matches: pitchline velocities of 50\u2013120 m\/s, sustained full-load operation for hours at a stretch across millions of kilometres, vibration and noise constraints that directly affect passenger comfort scores, and safety certification requirements that mandate full material and process traceability on every gear. The high speed train<\/strong> hard tooth flank spiraalvormig tandwiel<\/strong><\/a> from Korea Ever-Power Worm Gear Co.,Ltd is manufactured specifically for this duty, using 17CrNiMo6 alloy steel \u2014 the EN 10084 grade specified by European and Korean high-speed rail equipment manufacturers \u2014 through a complete forging, carburizing, and tooth-grinding sequence to DIN 3962 class 6 accuracy.<\/p>\n

\"Zachte<\/p>\n

The reference configuration \u2014 Mn=4, Z=132, helix angle \u03b2=18\u00b0, pressure angle 20\u00b0 \u2014 gives a pitch diameter of 528mm. This places it in the size range of a high-speed locomotive wheel gearbox primary gear or an EMU bogie gear, where the gear must transfer motor power to the axle at reduction ratios of 3:1 to 6:1 while running continuously at wheel speeds corresponding to 200\u2013350 km\/h line speed. The 18\u00b0 helix angle is a deliberate choice for railway traction: large enough to provide significant overlap contact ratio improvement over spur gears (which are never used in traction gearboxes), but moderate enough that axial thrust loads remain manageable with the angular-contact bearings standard in railway axlebox assemblies. Korea Ever-Power’s hard tooth flank helical gear<\/strong> production for railway applications includes full material traceability, dimensional inspection reports, and magnetic particle inspection certificates \u2014 all required for railway qualification programs.<\/p>\n

Technische specificaties<\/h2>\n

Gear Basic Data \u2014 Reference Configuration<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nWaarde<\/th>\n<\/tr>\n
Gear Tooth Shape<\/td>\nInvolute<\/td>\n<\/tr>\n
Tandwielmateriaal<\/td>\n17CrNiMo6 (EN 10084; carburized and quenched, HRC 58\u201362 case)<\/td>\n<\/tr>\n
Gear Process<\/td>\nForging \u2192 Lathing \u2192 Hobbing \u2192 Carburizing \u2192 External Grinding \u2192 Tooth Grinding<\/td>\n<\/tr>\n
Drukhoek<\/td>\n20\u00b0<\/td>\n<\/tr>\n
Quality Level<\/td>\nDIN 3962 Klasse 6<\/td>\n<\/tr>\n
Tandwieltype<\/td>\nMn=4, Z=132, \u03b2=18\u00b0, \u03b1=20\u00b0<\/td>\n<\/tr>\n
Calculated Pitch Diameter<\/td>\n528 mm (Mn \u00d7 Z)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Manufacturing Capabilities \u2014 Internal Gears and Internal Splines<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
<\/th>\nMILLING<\/th>\nSHAPING<\/th>\nTOOTH GRINDING<\/th>\n<\/tr>\n
Maximum O.D.<\/td>\n2500 mm<\/td>\n2500 mm<\/td>\n2500 mm<\/td>\n<\/tr>\n
Minimum I.D.<\/td>\n650 mm<\/td>\n50 mm<\/td>\n100 mm<\/td>\n<\/tr>\n
Maximum Face Width<\/td>\n500 mm<\/td>\n500 mm<\/td>\n500 mm<\/td>\n<\/tr>\n
Maximum Module<\/td>\n26 mm<\/td>\n26 mm<\/td>\n45 mm<\/td>\n<\/tr>\n
AGMA \/ DIN Level<\/td>\nDIN Class 8<\/td>\nDIN Class 8<\/td>\nDIN Class 4<\/td>\n<\/tr>\n
Tooth Surface Finishing<\/td>\nRa 3.2<\/td>\nRa 3.2<\/td>\nRa 0.6<\/td>\n<\/tr>\n
Maximum Helix Angle<\/td>\n\u00b122.5\u00b0<\/td>\n\u00b122.5\u00b0<\/td>\n\u00b145\u00b0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Manufacturing Capabilities \u2014 External Gears and External Splines<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
<\/th>\nHOBBING<\/th>\nMILLING<\/th>\nTOOTH GRINDING<\/th>\n<\/tr>\n
Maximum O.D.<\/td>\n1250 mm<\/td>\n2500 mm<\/td>\n2500 mm<\/td>\n<\/tr>\n
Minimum O.D.<\/td>\n20 mm<\/td>\n200 mm<\/td>\n20 mm<\/td>\n<\/tr>\n
Maximum Face Width<\/td>\n500 mm<\/td>\n500 mm<\/td>\n1480 mm<\/td>\n<\/tr>\n
Maximum Module<\/td>\n26 mm<\/td>\n26 mm<\/td>\n45 mm<\/td>\n<\/tr>\n
AGMA \/ DIN Level<\/td>\nDIN Class 8<\/td>\nDIN Class 8<\/td>\nDIN Class 4<\/td>\n<\/tr>\n
Tooth Surface Finishing<\/td>\nRa 3.2<\/td>\nRa 3.2<\/td>\nRa 0.6<\/td>\n<\/tr>\n
Maximum Helix Angle<\/td>\n\u00b145\u00b0<\/td>\n\u00b145\u00b0<\/td>\n\u00b145\u00b0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Why 17CrNiMo6 Is the Railway Standard for Traction Gear Steel<\/h2>\n

17CrNiMo6 (EN 10084) is a nickel-chromium-molybdenum case-hardening alloy used almost universally in European and Korean high-speed rail traction gearboxes. Its composition gives three properties that alternative materials cannot match simultaneously:<\/p>\n

\"Harde<\/p>\n