Air Compressors: Air Motors/Gearmotors
Gast Air Motors/Gearmotors PDF Catalog (1.4mb)
Known industry wide for their rugged construction and reliability, Gast Air Motors and air powered Gearmotors are used in a variety of applications. Lubricated Air Motors come in seven basic models up to 9.5 HP (7,1 kW); motor speeds are variable from 300 to 10,000 RPM. Oilless versions, which require absolutely no lubrication, come in three basic models ranging from .18 to .82 HP (0,13 to 0,61 kW) and with motor speeds up to 4,000 RPM. Choose from hub, foot, face, NEMA C-Flange or Metric D Series interface mountings and clockwise, counter-clockwise or reversible rotations. Four and eight vane models are also available. Air powered Gearmotors are available in right-angle and in-line models offering a maximum torque range of 73 to 5,200 lb. in. (8 to 587 Nm) and gear ratios from 10:1 to 60:1 single reduction gear reducers. A full line of recommended accessories is also available.
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TECO Air Compressor
Products: |
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Typical Applications
• Mixing Equipment
• Conveyor Drives
• Pump Drives
• Food Packaging
• Pharmaceutical Packaging |
• Hoists and Winches
• Hose Reels
• Fiberglass Choppers
• Tension Devices
• Turntables
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How to select an air motor.
Air motors differ in many ways from other
power sources. These unique operating
characteristics must be considered when
selecting an air motor for a particular job.
It is easy to change horsepower and speed
of an air motor by throttling the air inlet. Therefore,
the best rule of thumb for selecting an air motor is to choose
one that will provide the horsepower and torque needed using
only two-thirds (2/3) of the line pressure available. The full air
line pressure will then be available for overloads and starting.
Output Power vs Speed.
The output power of an air motor is relative to speed and
to air line pressure.
Torque vs Speed.
1. An air motor slows down when load increases…
at the same time its torque increases to a point where
it matches the load. It will continue to provide increased
torque all the way to the stalled condition, and it can
maintain the stalled condition without any harm to the motor.
2. As the load is reduced, an air motor will increase speed
and the torque will decrease to match the reduced load.
3. When the load on an air motor is either increased or
decreased, speed can be controlled by increasing or
decreasing air pressure.
4. Starting torque of an air motor is lower than running
torque. While this provides smooth, no-shock starting,
it is necessary to have additional air line pressure for
starting under heavy loads.
Air Consumption vs Speed.
Air consumption increases as speed and air pressure is increased.
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