Building my own PE250x400 Tracked Jaw Crusher Build – Need Advice on Hydraulic Drive vs Separate Diesel & Yanmar Engine Options

ianjoub said: I skimmed more than read, but generator and electric drive for crusher an option? I had priced out a tracked unit from China 4 or 5 years ago. Their design included a big diesel genny to power everything electrically instead of hydraulics. Click to expand... Most of the older quarry jaws had diesel engines mounted, and belt drive systems. Remote quarries still run gensets, but most have electricity run to site. I don't see near as much diesel equipment as I used to.

Here is a drawing of a Komatsu tracked jaw crusher. Powered by a 4D95 Komatsu diesel engine.

Welder Dave said: I'm not sure it's a good idea to use the Marooka hydraulics to power it. Cooling could be an issue and if you had a component failure could wipe out the entire system from contamination. I think a separate independent hydraulic system would be better. Click to expand... That sounds like a good idea use the back smaller pumps but draw its own oil.

Tones said: I'm also in the separate engine camp for all the reasons already mentioned. It also gives you 2 options on driving the jaw, mechanical or hydraulic. Going down the hydraulic road IMHO a hydraulic transmission pump on a closed loop curcuit to drive the jaw would be the best option with another pump to drive the rest. Both pumps should not be electricity operated just to keep it simple Most concrete agitators I've seen use hydraulic transmission pumps to drive the bowl. Click to expand... Yes I think you right one circuit for driving the tracks another with a bigger cooler for the crusher.

ianjoub said: I skimmed more than read, but generator and electric drive for crusher an option? I had priced out a tracked unit from China 4 or 5 years ago. Their design included a big diesel genny to power everything electrically instead of hydraulics. Click to expand... Yeah that would be ok to do but then I need to buy an expensive generator and motors.

John C. said: Here is a drawing of a Komatsu tracked jaw crusher. Powered by a 4D95 Komatsu diesel engine. View attachment 365383 Click to expand... Looks pretty similar to what is in my head.

Do you think I need rubber isolators between the rusher and the marooka frame or solid mounting should be ok?

The Komatsu stuff is all solid mounted. The vibrations work their way through the frame and the undercarriage. The whole machine will move when something big hits. The crusher is belt driven from a big hydraulic motor as I recall.