The ALPHA PSG-658 Pneumatic Wet Stone Grinder. Model PSG-658 / PSG-654. Air Pressure 85 PSI (6 Bar). Air Consumption 15 CFM (425L/min). Weight 2.9 lbs (1.3 kgs). No Load Speed 8,500 RPM. Air Inlet 1/4” BSPP. Water Inlet 1/8” BSPP. Spindle 5/8"-11 / M14-2. Length 7-1/2” (190.5mm). Alpha® is pleased to introduce the PSG-658 Pneumatic Grinder with a 5/8”-11 spindle. This newly developed high-performance wet pneumatic stone grinder will become an essential part of the stone fabrication shop. The PSG-658 comes with a very unique center water-feed system to deliver ample water to keep the dust down on the floor and also enhance the performance of the wheel. It is smaller and lighter than electric angle grinders and offers better maneuverability along with all the safety features. It is common knowledge that electric power tools do not last very long due to the stone dust or the water splash which damages them easily. This is why most of the polishers nowadays are pneumatic-driven polishers. The Alpha® PSG-658 is a turn-key operation that comes with 15 ft. all-weather hoses and a convenient water quick coupler with shut off valve. In addition, the end case is made with a composite material to prevent freezing which is a common issue for hands, by the rear exhaust system, in consideration of operator comfort.
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