Pneumatic keys and switchgear
Pneumatic keys and switchgear
An
electric impact wrench is powered via an electric plug point through an
extension cord, or via 18-28 volts lithium-ion batteries. Since people prefer
using cordless electric impact wrenches, only a handful of manufacturers
continue to sell corded varieties.An air impact wrench is powered through
compressed air. The power of such a wrench is determined by the power supplied
by its air compressor.Drive sizes help in ascertaining the rate
of torque offered by the wrench, and subsequently, higher drive size produces
greater amount of torque.
Air impact wrenches are known to offer more torque
with every impact as compared to electric impact wrenches. Unfortunately, most
pneumatic impact wrenches do not come with adjustable power modes, which makes
it increasingly difficult to control the torque. The self-contained design of
the cordless impact wrench makes it comparatively more expensive than other
types of impact wrenches. Secondly, cordless wrenches are powered by batteries,
and thus, unlike corded impact wrenches, do not pose any threat of accidentally
electrocuting the user.Although, pneumatic impact wrenches are
cheaper than electric models, buying the tool along with an air compressor may
prove to be more expensive.Power-to-weight RatioAn electric impact
wrench holds its main power source and other components within its frame.
Corded impact wrenches are found only in two sizes of 0.375 and 0.50-inch,
cordless impact wrenches are manufactured in sizes 0.25, 0.375, and 0.50-inch.As
mentioned earlier, pneumatic impact wrenches are lighter, more powerful, and
smaller in size.
Without constant power supply, a corded impact wrench would
prove useless as well. Similarly, a pneumatic wrench requires constant supply
of compressed air to function optimally, such a tool cannot be used in
emergency situations that warrant the use of an impact wrench. For beginner
DIYers, an air impact wrench may prove too powerful and difficult to control
for simple tasks.
Pneumatic keys occupies a prominent place, and it is governed by the system of pneumatics
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