Applying too much pressure while greasing will damage the bearing seals, which rarely handle more than 500 psi.
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Machine Health Risks Associated with Grease GunsĪ high-pressure manual grease gun is designed to deliver from 2,000 to 15,000 psi.
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A flush-type grease fitting is preferred when space is limited for standard protruding fittings, while the pressure-relief vent fitting helps prevent higher pressures that could lead to damaged seals.īe sure to read How to Protect Grease Fittings from Contaminants for more advice. The button-head fitting is ideal for good coupler engagement when large volumes of grease are being added. The standard hydraulic grease fitting is most commonly used for standard applications. This is the lubrication point where the grease connector is attached. Grease fittings have several names such as a Zerk fitting, grease nipple or Alemite fitting. Other accessories such as sonic/ultrasonic devices are also available. They also can be color-coded so that cross-contamination does not occur. Plastic caps provide benefits such as preventing corrosion and debris. Grease gun meters can be retrofitted onto a grease gun to help optimize lubricant consumption. On the other hand, lever-style grease guns require both hands to pump the grease and would favor the fixed-tube alternative. For example, a hard-to-reach location would benefit from a flexible tube. The decision to use a flexible hose or a fixed tube depends on the machine’s grease-fitting type and ease of location, as well as the type of grease gun used. A needle-end adapter provides a thin, precise amount of grease for tight places, while a three-jaw swivel coupler offers a variety of locking positions for different applications. A 90-degree adapter is ideal for fittings in confined areas that require a 90-degree bend. The standard hydraulic coupler is the most commonly used and most applicable. Simply knowing the signs of overgreasing and undergreasing and how often to reapply can go a long way in extending machinery life.Ī grease gun may come with the standard connection adapter such as a hydraulic coupler, but there are several variations depending on the application. Therefore, it is essential that the proper grease gun operation is understood and managed by lubrication technicians for bearing and machine reliability. For this reason, the filling and refilling of grease in grease-lubricated machines must be treated differently than that of oil-lubricated machines. It’s fundamental that grease is used as a lubricant because it clings to a machine’s moving surfaces without easily leaking away like oil.
It offers the advantage of being cordless. Pneumatic (Pistol Grip) – This grease gun uses compressed air directed into the gun by a hose activating a positive displacement with each trigger.īattery (Pistol Grip) – This is a low-voltage, battery-powered grease gun that works comparably to the pneumatic grease gun. It provides approximately 0.86 grams per pump. Manual (Pistol Grip) – This variation of the lever-type grease gun allows for the one-handed pumping method, which is very common. Manual (Lever) – This is the most common type of grease gun and can supply around 1.28 grams of grease per pump, which is forced through an aperture from hand pumps. One other major variation to the grease gun is how the grease is to be loaded: by suction fill, cartridge or bulk. The benefits to each of these depend primarily on the intended application and the lubrication technician’s personal preference. Aside from these variations, the hand-powered (or manual) grease guns can either be manufactured with a lever or a pistol grip. Grease guns have three ways in which they can be powered: by hand, air or electricity.