Tools used in the stone industry are usually powered by one of two methods: compressed air or by electric power. A small number are petrol driven but much less common. Choosing a power method for power tool often relies on the workshop set-up and the type of work being completed. This article looks at some of the reasons to consider air tools.
Tools powered by compressed air are also known as pneumatic, air driven or air fed tools. Pneumatic tools require power from an air compressor. This is a machine that has a gas-driven pump device that forces air into a steel cylinder until the air becomes pressurised. The tool that is being used is then connected via an airline which is a small tube that carries the air from the compressor to the tool.
On the other hand, electric tools require power from an electricity source and are available in different voltages, 110v and 240v. Although these are generally more common, it is worth considering the benefits that pneumatic powered equipment offer users, over their electric counterparts.
Most importantly, there are important safety benefits. Angle Grinders and wet polishers are among the most popular air tools used in a stoneworking factory. This is an environment where moisture, flammable chemicals, and conductive materials are present. Wet polishers, in particular, pose risks to users as cable stress can result in damaged cables and exposed wiring. In contrast, air tools do not use electricity and do not generate sparks.
Other safety benefits that pneumatic tools offer are low vibration levels. This means that operators can work safely for a longer time. If wet polishers are used intensively on a hand finishing line these vibration levels become very important for productivity levels.
Looked at from a user perspective, the machines are preferred by some masons as they are much lighter, and easier to use and manoeuvre. For example, a regular variable speed 125mm Angle Grinder (Makita Ga5040c) weighs 2.5KG, where the 125mm Gison Stone Cutter weight 2.02KG. They also tend to have a more compact design and smaller bodies. This will help to reduce operator fatigue.
They are also made of fewer parts than complicated electrical components, which reduces the chance of breakdown, ensuring that your team always have working machines. Servicing the tools is also easier as they are mechanical and are often worked on locally without needing to send the tools away for repair.
Stonetools offer a 12-month warranty (from purchase date) against manufacturing defects on all pneumatic tools. Just let us know the machines' serial number and we'll take care of the collection, inspection and repair.
Gison GPW-221 
Gison GPW-221L
Gison GPW-7
Gison GPW-215C 
Gison GPW-216C