Air Motors

Manual (for seasonal changes only) or automatic pitch control operated by air-motor on fan blades. 

Lyons, W. C., et al., Field testing of a downhole pneumatic turbine motor , Geothermal Energy Symposium, ASME/GRC, January 10-13, 1988. Magner, N. J., Air motor drill, The Petroleum Engineer, October 1960. Downs, H. F., Application and evaluation of air-hammer drilling in the Permian Basin, API Drilling and Production Practices, 1960. 

The operation of a typical fluid power system is illustrated in Figure 40.1. Oil from a tank or reservoir flows through a pipe into a pump. An electric motor, air motor. 

The drilling may be accomplished by a compressed air motor and a water supply will be necessary to help lubricate the drilling operation and to flush away the deposit as it is removed. Fig. 15.10 illustrates the principle. 

Gas turbines are usually started by a DC motor or an air motor. Either system is available for most turbines up to about 20 MW. Occasionally AC motors are used. Beyond 20 MW, when heavy industrial machines tend to be used, it becomes more practical to use air motors or even diesel engine starters. DC motors require a powerful battery system. The DC motor and battery systems tend to be more reliable and less space consuming, which is important for offshore systems. Air motors require air receivers and compressors. The compressors require AC motors or diesel engines. Air start and diesel start systems are more popular for onshore plants especially remote plants, e.g. in the desert. This is partly due to the fact that batteries tend to suffer from poor maintenance in hot, dry locations. Air systems require regular maintenance and must be kept fully charged in readiness for a quick start. Air system receivers can become very large if more than three successive starting attempts are required. More starts can probably be obtained by a battery system that occnpies the same physical space. 

Many people have the motor control necessary to operate a motor vehicle, but they do not have the strength required to operate manual hand-controls. Automatic or Fly-By-Wire hand-controls use external actuators (e.g., air motors, servo mechanisms, hydraulic motors) to reduce the force required to operate various vehicle primary controls. Power steering, power brakes, six-way power seats, and power adjustable steering columns can be purchased as factory options on many vehicles. 

Air chain hoists are available operated hy air motors driven hy compressed air at either 4 or 6.3 hars. Safe working loads range from 0.25 to 50 tonnes. These may also he linked to airdriven trolleys v 4iere hoists are used in conjunction with an overhead gantry. 

IJhat lubrication arrangements are made for the machining air motor and are any precautions necessary with the exhaust ... 

Lubricate the air motor located on pump suction Replace the pump lubricant and lubricant filter Replace seals and O-rings in the high-speed shaft assembly... 

Equip motor-driven electrical equipment used in a laboratory where volatile flammable materials may be present (e.g., a hydrogenation room) with either nonsparking induction motors that meet Class 1, Division 2, Group C-D electrical standards (U.S. DOC, 1993) or air motors instead of series-wound motors that use carbon brushes, such as those generally used in vacuum pumps, mechanical shakers, stirring motors,... 

Continuous glass fibre (roving) is chopped in the chopper unit of the spray gun by the action of a rotating blade against a polyurethane roller. The resulting chopped strands are blown from the gun by the exhaust from the air motor which drives the chopper. Concurrently resin is sprayed from the gun and the streams of resin and chopped glass fibre meet approximately at the mould surface. 

Air which is compressed in a conventional ringed piston compressor will contain particles of oil and dirt and, when it cools, droplets of water. The bulk of these contaminants will be removed by traps, filters, dirt eliminators, air receivers, and by an aftercooler, if fitted. The resultant air is then clean enough for most applications. The air feed to air motors, which require lubricating, is passed through air lubricators. It is important for the operator to check that the transparent bowl of the air filter is clear and that the air lubricator is filled to the required oil level before using machines which have these fitted in the air supply line. 

The outer edges of the blades of the rotor used in air motor are made of polyamide or acetal copolymer containing M0S2 dry lubricant [49]. 

Itiser light an air motor carbon steel titaniuin gears... 

Air chain hoists are available operated by air motors driven by compressed air at either 4 or... 

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