RCF Calculator

Calculation of "G" or RCF (Relative Centrifugal Force)

RCF is dependent on the speed of the rotor and the distance from thecentre of the motor drive shaft to the base of the sample tube. Manufacturerswill give you the maximum speed and RCF of the rotor and its radius. For anyspeed other than maximum, you need to calculate the RCF.

If you do not know the radius of the rotor, you will have to measure this.Sometimes this may entail a little bit of guesswork in the case of an anglerotor. The radius is measured from the centre of the rotor to the point thatwould be the bottom of the sample tube. Take into account, inserts and anytube cushions.

Insert the figures into the formula below or use a nomogram chart, if youhave one, with a ruler on two values to determine the third. e.g. RCF andradius to obtain speed or radius and speed to obtain RCF. (A freenomogram chart is available - just call us on 020 8402 4426)

To help you, the formulas are…

To make things really easy, you can use our simple calculator below. Click on the button below to open our on–line RCF Calculator.