Modern oil systems often combine the two cleaning systems, where the depth filter removes the contamination (off-line) and the surface filter serves as security filter (in-line).
On crushers the reduction in wear is significant and thus related costs saving are also significant.
It is common knowledge that most solid debris in non-filtered used oil is smaller than 10 microns in size (typically 90%). In fact these size particles are called silting particles and it is them that are the cause of abrasive wear inside a lubricated system and so that makes financial sense to capture them and remove them from in-service oil.
I'm currently using in-line surface filter bank (75 microns) on my 7ft Symons Crushers at flow of 250 L/min at 105 kPa and planning to use depth filter instead as I think it will increase dirty holding capacity on the elements.
I'm thinking of using a Cellulose-based depth filter:
Ø The largest particles are retained on the outside of the element whereas the smaller particles enter the element and are retained within the filter element.
Ø Using a cellulose element enables removal of water (absorption) and oxidation residuals; resins/varnish (adsorption).
Any comments or advice or experience on using in-line depth filters on crushers (water seal arrangements).
Use of depth filters off-line vs in-line
Re: Use of depth filters off-line vs in-line
