A vibrating screen has an eccentric shaft and 2 counter weights at the shaft ends. I would like to know what should be the amount of eccentricity on the shaft and how much should be the weights at the end...
Eccentric Shaft The single activating shaft is eccentric and runs the width of the screen inside a protective steel tube. This tube also acts a substantial structural brace, being set in machined positions in the side plates to ensure the vibration is transmitted positively to the main frame.
Circular vibrating screen Features 1. The vibration exciter adopts eccentric form. In this way, it is not only aggrandize the single vibration power of vibrator but also can charge the stimulating power stochastically, suitable for modularization design and use.
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The unbalance weights on the drive shaft produce an oscillating force which sets the spring mounted working device to vibrate in a defined direction. As shown in above figure, it is possible to generate circular, elliptic or linear vibratory movements.
The vibrator assembly comprises eccentric masses mounted on the exciter shaft. The shaft is supported on either two or four vibration screen duty self aligning double row spherical roller bearings. The assembly is bolted to the two side plates.
The FongChuan Vibrating Screen Series are firmly constructed from an elaborate design a pair of eccentric shafts are levelly and symmetrically mounted in a driving system of the vibrating screen, out of which violent vibration forces are generated in regular cycles.
ECCENTRIC SHAFT DESIGN Eccentric shaft vibrators insure high capacity and can be used in heavy duty applications in both feeding and screening machines.
Eccentric shaft produces a true circle vibration that gives a full floating motion. Material is rapidly stratified. Undersize has maximum time to work down through the bed of material and pass through the screen cloth. Two Bearings Mean Lower Power Costs