Be confident in your purchase, we're a Certified ASG dealer. How cool is that! Features: Low vibration levels MM, MN, MO air motor models are equipped with a silencing system that reduces the noise levels Highly effective due to compact size, high power output and low air consumption Designed using materials and processes that minimize the effects on the environment Customized models are available upon request Drive shaft diameter: all drive shafts include a UNI 6604 Form A key slot 6mm for 15M 10mm for 20M and 28M 13 mm for MM 14mm for MN 24mm for MO Image may vary slightly from actual product Specs: SKU: MO20R MODEL NUMBER: MO20R OUTPUT SHAFT TYPE: Smooth Output Shaft TORQUE AT MAX. POWER - IMPERIAL: 681.45 lbf.in TORQUE AT MAX. POWER - METRIC: 77 N.m STATIC TORQUE - IMPERIAL: 796.5 lbf.in* STATIC TORQUE - METRIC: 90 N.m* SPEED AT MAX. POWER: 100 RPM NO LOAD SPEED: 200 RPM AIR CONSUMPTION AT MAX. POWER: 38.1 CFM POWER: 645 W | 0.86 HP REVERSIBILITY: Reversible WEIGHT - IMPERIAL: 10.56 lb WEIGHT - METRIC: 4.8 kg WARRANTY: 2 years The Fiam MO20R 200RPM 77N Smooth Air Motor Output Shaft features innovative design, which insures reliable motor starting even at low air pressure. Does not overheat in difficult, heavy duty conditions, repetitive start/stops or repetitive reversing.