coal mill (ball mill ) gear box reduction ratio calculation
DESCRIPTION
Coal Mill (Ball Mill ) Gear Box Reduction Ratio CalculationTRANSCRIPT
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- BALL MILInputsBall mill G/G No. of teeth 172Pinion No. of teeth 21Ball mill RPM on Main Drive 17.6Ball mill RPM on Aux. Drive 0.25Main Motor Speed, RPM 990Aux. Motor Speed, RPM 1450No. of Main Motor 1Main Motor kW of each Motor 850
CalculationMain Motor Total Power, kW 850Girth Gear / Pinion Teeth ratio 8.19047619 =(172/21)Reduction ratio of Main G/B 6.86773256 =(990/(17.6x172/21)
6.86 :1
144.152381 =(17.6x172/21)Reduction ratio of Aux. G/B 103.227337 =1450/(0.25x172x6.86/21)
103.22 :1Speed of Output shaft of Aux. G/B, rpm 14.0466667 =0.25x172x6.86/21Aux. Motor Power, kW - Calculated 12.0738636 =850x0.25/17.6Aux. Motor Power, kW - Std. Motor Considered 15
Reduction ratio of Main G/B - Round offSpeed of Output shaft of Main G/B, rpm (Pinion Speed)
Reduction ratio of Aux. G/B - Round off
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=1450/(0.25x172x6.86/21)
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