Zerol spiral gear features:

1) Max. OD2000mm
2) Max. Mould 36
3) Material: 42CrMo, 20CrMnMo, 20Cr2Ni4, 35CrMo, 20CrMnTi and other high intensity alloy steel
4) Tooth flank carburization or nitrification, with rigidity of HRC58-62
5) Gear precision: Grade VI
6)Precise measurement and surface finishes are available
7)High dense alloy or other materials is also available
8)custormer's drawing and samples are welcome

It is used in automobile, oil drilling rig, and so on