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About Speed Reducers
Speed reducers are produced by speed reducer manufacturers
to lower motor speed through an increase in torque and a decrease in
output speed. Speed reducers, also known as gear heads or gearboxes,
contain a set of gears, and input and output shafts. Speed reducers are
called a gear head when it is mounted directly onto a motor, not just
a shaft. During equipment operation, the motor transmits power to the
input shaft of the reducer. The speed reducers then convert this power
into lower output speed, which the reducer transmits to the connected
load through the output shaft.
Speed reducers are utilized by a wide variety of industries. Common industries
in which speed reducers are found include the materials handling; automotive;
aerospace; recreational; construction; food and beverage processing;
oil and gas; and textile industries. Speed reducers are used in a variety
of applications, including automation equipment; conveyors; compressors;
printing presses; pumps; compressors; generators; and robotics applications.
Formations of the gears in speed reducers are made available by speed
reducer manufacturers in many manifestations. Each one is designed for
specific load and torque capacities. An example is a cycloidal reducer,
which is capable of providing high reduction ratios with high accuracy,
with the use of rolling elements. Another formation is that of the planetary
reducer, which handles large shock loads well. The name stems from a
likeness to a solar system in which “planet” gears revolve
around a “sun” gear.
Gearheads and other reducers are advantageous in many pieces of equipment.
The benefits of using gear heads include speed optimization and performance
improvement. In addition, a wide array of gear configurations remains
available for use in different applications. Remanufactured speed reducers
are also a commonly sold from speed reducer manufacturers. These often
come at greatly reduced costs but often may lack a warranty. When selecting
speed reducers, consider gear ratio; efficiency requirements; mechanical
rating; and thermal rating.
Featured
Articles
http://www.diequa.com/download/selecting_gearboxes.pdf
http://www.memagazine.org/backissues/membersonly/aug02/features/startnew/startnew.html
Types of Speed Reducers
- consist of rolling elements and
a multi lobed cam to pass on torque. They are noted for their high
stiffness and low backlash properties.
- lower motor speed by increasing torque.
- are speed reducers that lower RPM and increase torque.
- have gear reducers integrated into the motor.
- are spiral gear reducers used in applications
involving high shock loads. Helical reducers may require a larger
initial investment, but maintain high efficiency.
- are speed reducers containing parallel input
and output shafts. Parallel gear reducers offer great flexibility,
but
tend to be more costly than inline gearboxes.
- consist of an input shaft-driven central
rotary gear around which a set of gears rotates. Planetary gear
reducers are
efficient in applications involving high shock loads.
- contain input shafts that are positioned perpendicular
to the output shafts. Right angle speed reducers have up to
98% efficiency levels, and are common in printing presses and glass
cutting equipment.
- which have teeth that are straight and
run parallel to the axis of revolution. These are used primarily
for use in parallel shafts.
- are
right angle speed reducers used in applications involving low horsepower.
Worm gear reducers maintain high gear ratios,
high shock tolerance, and compact design.
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