The ring gears have ring shapes. The ring gears always with many gear teeth. It is important to properly control the deformation caused by their shapes in order to maintain appropriate gear accuracy during the manufacturing work.

Double helical gear shaft working with double helcial gear, usually for heavey duty applications.

The teeth of helical gear are twisted oblique to the gear axis, teeth direction can be right hand or left side. Right hand and left hand helical gears mate as a set, the helix angle must be same for one set. Helical gear have the advantage of transferring power smoothly compared with spur gear because more than two teeth will be in mesh at any moment in time.

Herringbone Gear a special type of double helical gear, there has no relief groove between the double helical gears.

Double helical gear a special type of gear that is a side to side combination of two helical gears of opposite hands. Double helical gear with advantage over helical gears is the side thrust of one half is balanced by that of the other half, it means that double helical gears can be used in torque gearboxes without requiring as a substantial thrust bearing. Double helical gear or herringbone gears are always used in heavy duty machinery.

The teeth of helical gear are twisted oblique to the gear axis, teeth direction can be right hand or left side. Right hand and left hand helical gears mate as a set, the helix angle must be same for one set. Helical gear have the advantage of transferring power smoothly compared with spur gear because more than two teeth will be in mesh at any moment in time.

A gear shaft is an essential part of the overall transmission that bears the shear stress and torsion.

The teeth on a straight bevel gear have a straight tooth geometry, they taper from the large diameter of gear tooth to the small diameter.

Los dientes de engranaje hipoide similares a otros engranajes cónicos en espiral pero engranajes hipoides operan en ejes no intersectantes.