An Overview of Grease Gun Components

John Billiou
3 min readAug 16, 2021

A grease gun (or pneumatic) is an indispensable tool used for maintenance and repair of grease and fluid systems in a variety of industries. It is used to pump a small amount of grease into a tight area, where it is then pumped out with a low-pressure jet of compressed air. Grease guns can also be used to rapidly apply grease to a wide variety of work pieces that receive regular service or are in frequent use.

A grease gun (powtor) is a common grease gun used in many workshops and garages for the purpose of lubricating moving parts. The main function of the grease gun is, of course, to apply lubricant to moving parts. The channels on the gun’s body lead to where the grease is needed. The guns are normally run using a standard air tank, which can either be refilled with more fluid, or can be simply used until empty. Some guns may also feature a carry handle or other handy piece that can be used to transport the gun conveniently from place to place.

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There are four basic types of lubricants that can be applied to the guns; Grease, Liquid Grease, Soft Grease, and Hard Grease. The type of lubricant that is used will depend on the application needs of the user. Firstly, the gun must have an open channel that can receive an application through a nozzle; secondly, the application of lubricant must be able to reach the work part at a good angle; thirdly, the application of grease per pump should occur at a constant velocity; and, lastly, the gun should be fully open at all times during its operation. These four features are important to consider when designing and building a grease gun. The following sections will discuss each of these four areas in more detail.

A grease gun can be designed and built with a closed or open channel design. Closed designs are generally more effective than open designs, because they require less fluid to complete the task. In addition, the pumping action is more controlled in a closed gun because it is not possible for oil to escape from the part. The amount of lubricant should be determined by the application needs of the individual user.

A gun may come equipped with a trigger. Trigger action can be manual, automatic, or hydraulic. Manual trigger action is commonly used in a pneumatic application. When the trigger is used, a small amount of compressed air or hydraulic pressure is used to activate the gun. An automatic trigger is often used in pneumatic applications to engage or disengage the barrel. Hydraulic trigger action is commonly used in an automatic gun to trigger the barrel when the pressure reaches a specific level.

Special kinds of grease guns are designed to prevent leaks from occurring during operation. Some guns are equipped with a solenoid that engages or disengages the gun during operation. These types of guns require more careful maintenance to prevent excessive wear of the drive and the parts. Proper cleaning and lubrication are necessary to ensure that the solenoid function properly.

Grease guns with an open plunger system are very simple to use. This type of gun requires the user to maintain proper cleaning and lubrication along with proper cleaning and lubrication of the plunger. This process is called air compression and air sealing. If dirt, debris, rust, or any other contaminant gets into the air compressors, the plunger cannot seal the fluid efficiently to prevent leaks.

The parts of a grease gun are commonly used in conjunction with other products and equipment. Because the device is commonly used in a variety of applications, it is often found on machinery that operates on a large scale. The various components of a grease gun are often found on a large number of industrial and commercial machinery including: air compressors, industrial pumps, water pumps, and centrifuges. Regardless, of the kind of machinery that a grease gun runs on, its maintenance is crucial to the effective operation of that particular equipment.

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