Angle grinders for cutting, grinding and cleaning metal, motorless and without a power cable. They are powered by compressed air from the workshop’s compressor, so they do not overheat and can withstand heavy use all day long. At Geosantro, you’ll find Φ125 pneumatic angle grinders and a Φ115 pneumatic disc, complete with a guard and with speeds suitable for cutting discs, grinding discs or wire brushes.
They require a constant pressure of around 6.3 bar and a compressor capable of meeting their demand. A few drops of compressed-air tool oil before each shift will keep them in top condition for years. Free delivery throughout Cyprus on orders over 50 euros.
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It is a wheel that runs on compressed air from a compressor, with no motor and no power cable. It cuts, smooths and cleans metal using a disc that rotates at very high speeds. As it contains no electrical parts, it is lighter to hold and can be used comfortably in wet or dusty workshops.
If you already have an air compressor and spend many hours working with metal, an air-powered tool is the better option: the motor doesn’t burn out, it doesn’t get hot in your hand, and it withstands heavy daily use for years. The electric version is handy where there’s no compressed air supply. In a workshop with a compressed air supply, the air-powered tool lasts longer.
The wheel is one of the most demanding pneumatic tools, as it operates continuously rather than in pulses. It requires a constant pressure of around 6.3 bar and, above all, a good air supply. Check the litres per minute required by the model and use a compressor that delivers more than that, otherwise it will lose speed mid-cut.
The number refers to the disc’s diameter in millimetres. The Φ115 is smaller and more manoeuvrable in tight spaces, whilst the Φ125 offers a slightly greater cutting depth and is suitable for a wider range of jobs. Geosantro stocks both sizes. Whichever you choose, the disc must match the tool’s diameter exactly.
Thin cutting discs for cutting metal, coarser grinding discs for removing welds and cleaning seams, and wire brushes for rust and paint. The crucial point is the maximum speed specified for the disc: it must be equal to or greater than the tool’s speed.
Before each shift, apply a few drops of special compressed-air tool oil to the air inlet, or fit a lubricator onto the line. Without lubrication, the vanes inside the tool will wear out and the wheel will lose power. Also fit a water filter, as moisture from the compressor causes the internal parts to rust.
The noise comes mainly from the air being expelled and from the disc itself as it rubs against the metal, so earplugs are not optional. The vibration is generally less than that of a power tool of the same size, as there is no motor. However, if using it for long periods, do take breaks to rest your hands.
Always keep the guard in place, wear goggles or a face shield and gloves, and stand so that the sparks fly away from you. Check the disc for cracks before fitting it and do not exceed its maximum rpm. Turn off the air supply before changing the disc; do not simply release the trigger.
Yes, you just need to change the disc. For stainless steel, you need an iron-free disc so that no particles remain which might cause the surface to rust later on. For aluminium, you need a disc that doesn’t clog easily, as the soft material tends to stick. It’s a good idea to keep separate discs for each material in the workshop.
From Geosantro. You’ll find Φ125 angle grinders and Φ115 air-powered discs, with free delivery throughout Cyprus on orders over 50 euros. If you’re not sure whether your compressor can provide the air flow required by the tool, send us its specifications and we’ll let you know.
