Double Helical Gear Transmission

Double Helical Gear Transmission

Double Helical Gear Transmission
Accuracy Grade Milling: 6 grade
Hobbing: 8 grade
Material :Alloy steel: 42CrMo4, 34CrNiMo6 etc.
Carbon steel: C45E, 1030
Carburizing steel

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Product Details


Herringbone gears conduct power and motion between non-intersecting and parallel axis ,each center might or might not has center groove,and each group consist of  two opposite helices.  The two helix angle come together in the center ,and the shape of herringbone gear is similar as the letter 'V'.

All kinds of bearings are used as support and limit for the shafting  in real work. It is very important to choose the type of bearing to ensure the correct meshing of the herringbone gear transmission.The axial movement of the shafting is completely limited  If the bearing with the restricted axis moves, and double helical gear can not be meshed correctly: therefore,in the shaft, the position of the bearing should be adjusted and fixed firstly.




Machining Scope



OD Max 16m

One Piece of Gear:    OD Max 13m

Assemble Gear:    According to drawings

Hobbing Modulus


Milling Modulus

Up to 120

Spiral Modulus


Teeth Profile

Spur, Helical,    Herringbone, Crown, Spiral, Worm and shaft

Accuracy Grade

Milling: 6 grade

Hobbing: 8 grade


Alloy steel:    42CrMo4, 34CrNiMo6 etc.

Carbon steel: C45E,    1030

Carburizing steel

Heat treatment

Quenched and    tempered steel



Forging ----Rough ------Heat treatment-----Finish------- milling--- chamfers---- break edges--surface hardening-------inspection


Package: according to clients request .

Delivery time: normally 30days—90days,according to order quantity.



Double Helical Gear Transmission is mostly used on heavy machinery. High precision double helical gears is mainly used  in power transmission.They utilize curved teeth for efficient,high capacity power transmission.This reduced pulsation,because they are highly used for extrusion and polymerization.


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