Air motors from Atlas Copco are a reliable, cost-effective solution when applying power to rotating machines. Consider the air motor features and characteristics that give a large number of benefits to the designer:

General Overview

Atlas Copco LZB vane motors utilize five vanes to ensure excellent starting and low speed performance. Most models come in standard and stainless-steel versions to match your application’s specific need. The long and slim design integrates seamlessly with several different mounting styles, while multi-step planetary gears dial in your exact torque and speed requirements, offering high efficiency with compact dimensions

  • Long and slim
  • Fit with major standard mounting
  • Lubrication free
  • Reversible
  • Brake available
  • Stainless Steel range
  • High torque and low speed range
  • ATEX certified
  • High power-to-air consumption ratio
  • High reliability
  • Low air consumption
  • Long vane life


Working Principle

A. The air enters the inlet chamber “a”. Vane 2 has just sealed off the chamber “b” between itself and Vane 3. The pressure in chamber “b” is still the inlet pressure. This pressure acts on vane 3, moving it in a clockwise direction.

B. The vanes have rotated further, and the expansion process in chamber “b” has started. The pressure in it is thereby reduced, but there is still a net force moving the rotor forward as the area of vane 3 is larger than the area of vane 2 in chamber “b”. Furthermore, the inlet pressure acts on vane 2 in the inlet chamber “a”

C. The vanes have moved further. Chamber “b” is now being emptied through the outlet, and there is no more contribution from this chamber. The force moving the rotor forward now comes from the force on vane 1 and vane 2.

Thanks to this simple principle, the energy of the compressed air is converted into rotational motion from chamber to chamber, and the motor turns.


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