RPM of Mill

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Tanveer Ahmad Participant Join Date: Mar 2012 Posts: 2	RPM of Mill 04/24/2012 12:15 AM
	we have calculate rpm of mill having data as. girth gear teeth 160 pinion gear teeth 23 gear ratio 1:8 motar rpm 991 plz discuss how can rpm of mill is calculated.
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#1 Re: rpm 04/24/2012 12:31 AM
	1.8x991 or 1.8/911. You don't say which end is driven.
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TonyS Guru Join Date: Aug 2010 Location: Resting under the Major Oak Posts: 4347 Good Answers: 181	#2 Re: RPM of Mill 04/24/2012 7:00 AM
	For a mill drive it's not going to be 1/8 991RPM in to 8/1 gearbox gives 123.87 output to pinion Girth gear / pinion ratio = 6.95 123.87 / 6.95 = 17.8 mill RPM __________________ The reports of my death are greatly exaggerated.
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TonyS Guru Join Date: Aug 2010 Location: Resting under the Major Oak Posts: 4347 Good Answers: 181	#3 In reply to #2 Re: RPM of Mill 04/24/2012 3:59 PM
	If we use lyn's suggestion of a gearbox ratio of 1/8 the mill would be a centrifuge rotating at 444.8 RPM! __________________ The reports of my death are greatly exaggerated.
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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#4 Re: RPM of Mill 04/25/2012 10:25 PM
	If the pinion is mounted directly to the motor, 991 x 23 ÷ 160 ≈ 142 rpm of the mill. If the 1:8 is an additional gear reduction between the motor and the 23T pinion, then the mill rpm would be about 18. __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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TonyS Guru Join Date: Aug 2010 Location: Resting under the Major Oak Posts: 4347 Good Answers: 181	#5 Re: RPM of Mill 04/26/2012 11:18 AM
	As I said 17.8 rpm which would be about right for a mill. I'm just going on past experience with them. __________________ The reports of my death are greatly exaggerated.
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bashir01219 Commentator Join Date: Oct 2010 Location: Bangladesh Posts: 91 Good Answers: 2	#7 In reply to #5 Re: RPM of Mill 04/27/2012 12:07 AM
	Yes, you are exactly right. I have some work exp. with the similar mill.......... __________________ Experiance will come with time, but you have to manage quality time. Bad management always leads us bad experiance.
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bashir01219 Commentator Join Date: Oct 2010 Location: Bangladesh Posts: 91 Good Answers: 2	#6 Re: RPM of Mill 04/27/2012 12:05 AM
	Ask Mr. Raihan/or Mr. Silvarag about this question, they have all the relevant information you required. __________________ Experiance will come with time, but you have to manage quality time. Bad management always leads us bad experiance.
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bashir01219 (2); lyn (1); TonyS (3); Tornado (1)

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