spur gears, which are designed to transmit motion and power
between parallel shafts, are the most economical gears
in the power transmission industry.
We offer both
14 1/2° and 20° PA (pressure angle), involute,
and full-depth system gears. 20° PA is generally recognized
as having a higher load carrying capacity; however, 14
1/2° PA gears are used extensively as well. This is
because the lower pressure angle reduces change in backlash
due to center distance variation and concentricity errors.
The 14 1/2° PA also provides a higher contact ratio
for smoother, quieter operation.
Boston Gear spur gears are available through our Guaranteed
Same Day Shipment from our world class manufacturing center in Charlotte,
NC. Many different gears with a variety of bore sizes,
keyways, and setscrews are routinely in
stock, but if the particular bore/keyway/setscrew combination
needed is not readily available, our machining experts
can alter any gear and ship it within 24 hours. Just ask!