![]() ![]() ![]() Achieving this means the piston or screws need a different means of sealing and lubrication. What it means is that no oil is introduced into the air compression chamber. The oil-free designation does not mean the compressor runs without lubricating oil. Arguably, compressed air can be filtered to the required purity, but many compressor purchasers in these industries prefer to buy a compressor that has been designed so it will not put oil into the air. Food and beverage and medical industries are the main examples. In some industries, it is essential that compressed air used in production is completely free of contaminants. This may sometimes appear as a buildup on the exhaust ports of air-powered tools and equipment. A separator after the compressor pulls out most of this oil, leaving a very small amount that is carried into the air distribution network. In addition, it provides lubrication and takes away heat.Īs air moves through the compressor some of this oil becomes entrained. Its main function is to seal the gap between the piston ring and cylinder wall or screw tips and housing. In both of these designs, oil is injected into the compression chamber. In a rotary screw design, compression is performed by a meshed pair of helical screws that suck air in and squeeze it into a reducing volume. Air is drawn in on the downstroke and compressed on the upstroke. In a piston compressor, also called a reciprocating compressor, a piston moves up and down in a cylinder. How Oil Gets Into Compressed AirĮvery air compressor is a pump, the two most common types being piston and rotary screw. First, though, it is important to be clear about what “oil-free” means and why it can be important. Here we’ll discuss the maintenance and repairs needed by oil-free compressors, and how this differs from oil-injected designs. What’s more, while oil-free compressors may need less frequent attention it might be argued that they need overhauling more often. While there are differences in what oil-free and oil-injected compressors need, neither type will provide reliable operation with no maintenance at all. ![]() Spend over £25 online for free delivery or click and collect from your closest Toolstation branch.One of the benefits touted for oil-free air compressors is reduced maintenance. Use John Guest compressed air accessories such as stem adaptors, air reducers and elbow connectors to add to your pneumatic tools for pneumatic compression. For an all-in-one solution, choose the SIP air tool and accessory set including 67x of the most popular air compressor tools. For an instant air compressor refill for your tools use the SIP trade 24L air receiver. The SIP airmate 24L oil-free compressor includes large wheels and a handle for easy movement. Other pneumatic air compressor tools we supply include air hose reels, rubber SIP air hoses and air filter regulators.Īt Toolstation, we have a vast range of SIP air compressor tools with a variety of maximum litres and power. These air compressors all have a built-in power regulator. Power a variety of air compressor tools such as the SIP air impact wrench, body saw and air angle grinder. We supply pneumatic tools from top brands including John Guest compressed air accessories and SIP and Draper air compressors. Work quicker and with ease using air compressors and air impact wrenches from Toolstation. ![]()
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