Helical gears generate axial shaft forces in addition to the radial shaft force generated by normal spur gears. Provides a smoother mesh and can be operated at greater speeds than a straight spur gear. Meshed helical gears can be at an angle to each other (up to 90 o ). Hand is in the direction of the slope of the teeth). ( Alternatively if a gear rests on its face the A helical gear is termed right handed or left handed as determinedīy the direction the teeth slope away from the viewer looking at the top gear surfaceĪlong the axis of the gear. Helical gears are similar to spur gears except that the gears teeth are at an angle with
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