Double Helical Gear Boxes

Double helical gear has both left- right helical teeth, is used to balance the thrust force and provide additional gear shear area. Also known as Herringbone gears, which resemble two helical gears that have been placed in an adjacent manner. Being double helicals, the thrusts are counter-balanced with no thrust loading on the bearings.

• Teeth grinded on hofler gear grinder, mot is checked post operation, surface finish, geometrical accuracy, contact with the mating part are checked, 70%, backlash is checked whether it is within the limits.
• Apex is checked in case of shrink, distance between two gears is checked, and material is 18crnimo6.
• Gear quality –Din1 and Din 2
• Teeth cutting on hobbling operation maintaining the teeth grounding allowance. Gear machined using tools and inserts from world’s best tool manufacturer like seco and sandvik
• Sharpening of gear cutters done on German machine klingenberg sharpener Grinding is done on cnc gear grinder using grinding wheels of Winterthur

• Heavy machinery
• External gear pumps
• Required on higher pressures & larger percentage of filled materials

• These gears are placed in V shape as two mirrored helical gears joined together. The mirrored arrangement revokes net axial thrust as each half of gear thrusts in opposite direction.
• To operate in rotational directions, these gears are extended in two possible arrangements for oppositely oriented helical gears/gear faces, one stable and the other unstable.