PFERD Pneumatic straight air grinder is ideal for fine grinding and polishing products. Use with or without oil. 3 - 4 drops per minute. Very slim machine extension. Highly durable working spindle due to rubber bearing and robust construction. Safety lever throttle. Comes with air supply and exhaust hose with silencer. With oil: Speed 23,000 RPM, power output 0.5 HP. Without oil: Speed 18,000 RPM, power output 0.46 HP. Operation without oil mist lubrication: Workplace-friendly; No oil precipitation onto the work piece; No negative effects on oil-sensitive materials (e.g. ceramic, wood, plastic). Air grinder is the fastest machines amongst the power tools. They achieve higher speeds in comparison to electric or flexible shaft drives. They have - when measured against their smaller size - a high power output. The durable and wear-resistant sliding vane and turbine motors have a long service life, low maintenance and are very easy to service. It is very versatile and used especially in medium- and large-sized companies that have a compressed air network at their disposal. It is used economically and reliably in production and assembly lines. Accessories included: 2 keys. 6.5' air supply hose, 2.5' exhaust hose (without nozzle). 1/4" collet 93074 (collet group 6). Advantages: Compact, ergonomic designed shape. Low weight. Technologically advanced. High power to weight performance. Versatile in use. Single speed RPM. No danger from overloading, can be loaded up to machine standstill. Housing insulated against low temperatures and vibration. Low-maintenance. Easy to service. Cost effective. Specification: Speed (RPM): 23000; Output (HP): 0.5; Exhaust: Rear; Throttle Type: Lever; Air Consumption (cfm): 22; Included Collet: 1/4; Air Supply Hose Inner Diameter: 5/16; Sound level (dB(A)): 79; Watts:340/370.