Air motor

By the principle of action, volumetric and turbine air motors are usually distinguished.
In the direction of movement - linear (piston, balloon, membrane and others) and rotary (piston and blade).

In volumetric pneumatic engines, mechanical work is performed as a result of expansion of compressed air in the cylinders of a piston machine, in turbine ones as a result of the impact of air flow on the turbine blades (in the first case, the potential energy of compressed air is used, in the second - kinetic energy ).

Volumetric pneumatic motors (piston, rotational and chamber (cylinder)) are most widely used.

Pneumatic engines, and in particular pneumatic cylinders , are identical in principle to the corresponding hydraulic motors . One of the varieties of pneumatic cylinders is membrane pneumatic cylinders . Diaphragm pneumatic cylinders belong to pneumatic motors with linear reciprocating movement of the output link - the rod .

In comparison with piston pneumatic cylinders, they are easier to manufacture due to the lack of precise fit of contact surfaces, have a high tightness of the working chamber, do not require lubrication and high-quality cleaning of compressed air. The disadvantages of this type of air motors: limited stroke length, variable output force, depending on the deflection of the membrane.

The most common single-acting diaphragm pneumatic cylinders with a return spring. They are used in equipment where significant efforts are required for relatively small movements (clamping, locking, shifting, braking, etc.).

Air motors are used in drives of various pneumatic tools that ensure safe operation in explosive areas (with accumulation of gas, coal dust), in an environment with a high moisture content .

• Compressed Air Vehicles

• Pneumatic drive
• Pneumatic tool
• Hydraulic motor

• Pneumatic engine - an article from the Great Soviet Encyclopedia .
• Levin V. I. Profession of compressed air and vacuum. - M .: Engineering, 1989 .-- 256 p. - 15,000 copies. - ISBN 5-217-00601-3 .