An agitator has a steady bearing (a PTFE bush bearing),
a radial bearing (rolling element bearing) and a locating bearing (rolling element bearing - in the gear box). How do you calculate the reaction loads at each of these bearings due to hydraulic load and other loads. Do you have any examples for this type of problem?
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Re: Hydraulic load calculations
14 November 2006 at 1:29pmThe lateral hydraulic loads on the impeller can be estimated with the following formula:Lh = 19,000 Hp*i / ( N D )
Where Hp*i is the fraction of the motor horsepower delivered to the impeller. The value is the motor horsepower in horsepower if only one impeller is present. The value of N is rotational speed in rpm and the value of D is the impeller diameter in inches. The result is the lateral hydraulic load in pounds force.
If the impeller operates at the liquid level or in gas dispersion a multiplier of about 3.0 should be applied to the result. With the load a simply supported beam formula can be used to estimate the lateral bearing loads and the bending moment on the shaft.
For further information, consult a mechanical or mixer design reference.
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