Page 11 of Buckeye, Dotco, Gardner-Denver Pneumatic Power Motors by Cooper Power Tools

rotary vane rotary vane 31mf-900/910 series s maximum motor power 31mr-910 series s maximum motor power 0.5 hp 0.37 kw s torque range 0.3 hp 0.22kw s torque range 0.5 ­ 23.6 ft lbs 0.68 ­ 32 nm s non-reversible s side exhaust s threaded or keyed spindle 2 ­ 21.6 ft lbs 2.7 ­ 29.3 nm s reversible s side exhaust s keyed spindle 31mr-911 31mf-900 speed code code 0 1 2 3 code 4 code 5 6 7 a dim 6.18 6.87 7.56 b dim 6.06 6.75 7.44 speed code code 1 2 3 code 4 code 5 6 7 a dim 6.93 7.62 8.31 speed code refers to last digit in model number speed code refers to last digit in model number model number 3/8 threaded 3/8 keyed rpm at max hp free speed 10000 2500 1500 925 700 550 375 225 20000 5000 3000 1850 1400 1100 750 450 stall torque ft lbs nm 0.5 2.2 3.5 5.9 7.1 8.8 14.1 23.6 0.68 3.00 4.70 8.00 9.60 11.90 19.10 32.00 weight lbs 2.7 2.7 2.7 2.7 2.8 3.1 3.1 3.1 kg 1.225 1.225 1.225 1.225 1.270 1.406 1.406 1.406 gear ratio 4.0:1 6.44:1 10.8:1 14.28:1 16.0:1 25.73:1 43.06:1 model number at max hp 1750 1075 650 500 425 250 150 rpm free speed 3500 2150 1300 1000 850 500 300 stall torque ft lbs nm 2.0 3.2 5.4 6.5 8.0 12.8 21.6 2.7 4.3 7.3 8.8 10.8 17.4 29.3 weight lbs 3.5 3.5 3.5 3.6 3.8 3.8 3.8 kg 1.588 1.588 1.588 1.633 1.723 1.723 1.723 gear ratio 4.0:1 6.44:1 10.8:1 14.28:1 16.0:1 25.73:1 43.06:1 spindle ­ rh rotation 31mf-900 31mf-901 31mf-902 31mf-903 31mf-904 31mf-905 31mf-906 31mf-907 31mf-910 31mf-911 31mf-912 31mf-913 31mf-914 31mf-915 31mf-916 31mf-917 3/8 keyed spindle 31mr-911 · 31mr-912 · 31mr-913 31mr-914 · 31mr-915 31mr-916 31mr-917 ·available on quotation basis only general air inlet 1/4 npt air consumption 21 cfm 59 m3/min offset side-to-center ­ 1-1/8 general air inlet 1/4 npt air consumption 18 cfm 51 m3/min offset side-to-center ­ 15/16 archieves full speed within a half revolution all tools performance rated 90psi 620 kpa air pressure standard equipment 1015869 muffler can be reversed instantaneously and continuously all tools performance rated 90psi 620 kpa air pressure standard equipment 1015869 muffler 16 17

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