processing range(external): maximum grinding diameter 2600mm processing modulus 1-45mm apes distance 1000-2300mm maximum gear width 1480mm helix angle +120/-45° Procassing Range (internal): maximum external diameter of gear ring 2600mm minimum internal diameter of gear ring 1200mm maximum wall thickness of gear ring 500mm maximum face thickness of gear ring 1010mm helix angle ±35° In usual conditions, the precision of external gear can reach level of AGMA 14-13 (equal to level 3-4 in DIN3962 Standard).Gear forming and gear forming modification can be done according to different design requirement.