What compressor does an air tool need?

Free air delivery at least 30% above the tool's l/min consumption. Below that, pressure drops in use and torque is lost.

What working pressure do air tools use?

Typically 6-6.3 bar. Higher pressure does not add power; it wears the tool and its seals.

Which sockets go on an air impact wrench?

Impact sockets only — CrMo, usually black. A chrome hand socket can shatter under impact.

Do air tools need lubrication?

Most do: either an inline lubricator or a few drops of tool oil into the inlet before use. Oil-free models state so explicitly.

Why is a filter essential for spray guns?

Compressor air carries moisture and oil; without filtration they reach the surface and cause craters and fisheyes in the finish.

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Pneumatic Tools

Pneumatic tools run on compressed air and are lighter, smaller and more heat-tolerant than an electric tool of the same output. The deciding figure is air consumption: if the compressor cannot keep up, the tool cannot deliver.

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Matching the compressor: l/min and bar

Every air tool quotes a working pressure (typically 6-6.3 bar) and an air consumption in l/min. The compressor's free air delivery should exceed the tool's consumption by at least 30%; below that, pressure drops in use and torque is lost.

Continuous-running tools such as sanders and grinders consume far more air than impact tools. Spray guns add a further requirement: without water and oil filtration, defects show up in the finish.

Frequently Asked Questions

What compressor does an air tool need?
Free air delivery at least 30% above the tool's l/min consumption. Below that, pressure drops in use and torque is lost.
What working pressure do air tools use?
Typically 6-6.3 bar. Higher pressure does not add power; it wears the tool and its seals.
Which sockets go on an air impact wrench?
Impact sockets only — CrMo, usually black. A chrome hand socket can shatter under impact.
Do air tools need lubrication?
Most do: either an inline lubricator or a few drops of tool oil into the inlet before use. Oil-free models state so explicitly.
Why is a filter essential for spray guns?
Compressor air carries moisture and oil; without filtration they reach the surface and cause craters and fisheyes in the finish.