RUSH GEARS inc. Spur Gears are designed to operate on parallel
shafts to transmit motion and power. RUSH GEARS inc. offers the
largest selection in industry today.
Spur Gears are the most popular form and the most efficient type of
gearing for the cost when transmitting power and uniform rotary
motion from one parallel shaft to another. Within the limitations of
center distance, spur gears provide a positive, constant speed drive,
the speed of which may be increased or decreased by increasing or
decreasing the number of teeth in the driving gear.
Spur Gears may be operated in a “gear-train” of two or more gears
but they must all be of the same diametral pitch and pressure angle.
Gears with 14-1/2° pressure angle will not operate with those cut to
20° pressure angle.
RUSH GEARS inc. SPUR GEARS are available in eight materials:
STEEL, HARDENED TEETH, CAST IRON, BRONZE, STAINLESS
STEEL, ALUMINUM, NYLON, NON-METALLIC PHENOLIC. Gears
made of custom materials to customer specifications can be
Pitch line velocity of metallic gears should not exceed 1200 feet per
minute. Where noise is a factor, but higher speeds cannot be
avoided it is recommended that a nylon or non-metallic gear be used
and operated up to speeds of 2400 feet per minute preventing much
of the noise and vibration caused by metal to metal contact.
All critical surfaces of RUSH GEARS inc. SPUR GEARS are
precision machined to close tolerances. Change Gears, Pinion Wire,
Stem Pinions, Internal Gears and Rack are all spur gears of various
types able to operate together since each has the same straight
involute tooth form.
RUSH GEARS also sell gear tooth measuring devices called GEAR
GAGES! Gear Gages reduce mistakes, save time and money when
identifying and ordering gears. These pitch templates are available in
three sets to identify all the standard pitch sizes: Diametral Pitch
“DP”, Circular Pitch “CP”, and Metric Module
“MOD”. Refer to the section on GEAR GAGES for catalog numbers