| Boston Gear's
stock helical gears are manufactured in both right- and left-handed
configurations with an industry standard 45° helix angle
to transmit motion and power between non-intersecting shafts
that are parallel or at 90° to each other. For parallel
shaft operation, helical gears with opposite-hand helix angles
are required. For shafts at 90°, a same-hand helix angles
must be used.
For parallel shaft applications, the overlapping tooth
contact of our helical gears provides smoother, quieter
operation and higher horsepower capacity than spur gears
of comparable size. For 90° shaft applications, the
tooth-contact area of helical gears is very small, making
it ideal for applications requiring only limited load
carrying capacity.
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