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Globe Compact Piston Air Motors

Globe Compact Piston Motors

The compact radial piston air motor operates without rod or crank shaft.  The radial arranged pistons travel along a curve and are controlled by the centre. 

The static control shaft supplies the driving pistons with the necessary air.  Air supply and release openings along the static shaft are periodically opened and closed by the rotation of the rotor to pressurise or release the pistons in an appropriate sequence.

Six of the twelve driving pistons are actively contributing to the torque at any moment.  Once reaching the highest point on the curve, the air driving the piston is released by the control unit and the piston is forced into its lowest position. 

The compact piston air motor's high torque is due to the power transmission of the pistons along the large external diameter of the curve.  The friction connected with the travel along the curve is low due to the rollers at the tip of the pistons.  This results in a long lifetime of the drive.

It is recommended to operate the drive within a speed range of 50-350 rpm.

Shaft dimensions can be adapted.


Mixing Equipment

Winding Equipment

Conveyor Belts

Hose Reels


Packing Machines

Cap Screwing Machines

Our experienced staff are capable of selecting your motors based on your applications and can help you make the right choice.  Please use our selection form or call us to discuss your needs.


Globe  compact piston air motors offer a unique form of drive with advantages including:

  • Simple inexpensive variable speed and torque control with a flow control valve and/or pressure regulator.

  • Intrinsically safe for explosion proof environments.  All Globe Archimedes compact vane air motors are certified according to the European Explosion Directive ATEX II cat. 2 G&D T5.

  • Indefinite stalling under load.  Air motors will not overheat or burn out.

  • Instantly reversible, operated with a simple control valve.

  • Long lifetime because of low friction and a minimum of parts exposed to wear.
  • 12 pistons for very low speeds and smooth running.
  • Improved design pistons for longer life time.
  • Controllable over a wide speed range.

  • Resistant to warm, dirty and damp conditions.

  • Cool running caused by the expanding air.

  • Compact and lightweight compared to equivalent electric motors.

  • No shock start up which improves the life span of your equipment.

  • Oil free running.
  • Silicone free so useful in mixing applications.
  • Available with front flange, which incorporates and extra bearing.
  • Special version for food and chemical industry

MacScott Bond Ltd is a member of the MacTaggart Scott Group. The Loanhead Division, certified to ISO9001: 2008 and OHSAS 18001:2007, has a full design, manufacture, installation, service and repair capability for pneumatic, oil or water hydraulic and cooling systems. We sell hydraulic, pneumatic and associated components and are distributors for SPX, Globe, Atlas Copco, SPX Power Team, MP Filtri, ACE controls and more.

Please feel free to contact our sales team or one of our engineers for more information about how MacScott Bond can help you.


Tel: 0131 448 2950  |   enquiries@macscott.com  |  Fax: 0131 448 2941