Rock jaw crusher

[JMart76]

That’s pretty cool, would take 10 yrs to crush all the rocks on my roads but it would keep me busy. He had a model that ran off diesel, he mentions at the end of the video it costs him less than $10 in diesel to run it.

[RiverRat1]

I bought the China rock crusher. Finally got it. Looks good to me. I won't use it a lot until next week or the week after.
I didn't have legs down which is why it's bouncing some. I don't have to intake chute on either yet. Once that's on I should be able to load rocks using my tractor.

[Big Lee]

Boys only grow up to own bigger and cooler toys. Prime example above! I don't have a use for one. But I want one. 😆

[andre3k]

I bought the China rock crusher. Finally got it. Looks good to me. I won't use it a lot until next week or the week after.
I didn't have legs down which is why it's bouncing some. I don't have to intake chute on either yet. Once that's on I should be able to load rocks using my tractor.

How was the shipping and communication process? I have my eyes set on one of the stand on mini skids

[RiverRat1]

How was the shipping and communication process? I have my eyes set on one of the stand on mini skids

It was actually very good. Probably better than most places here in the USA. Shipping takes a long time due to customs and well..it's China LOL
I went through Alibaba. Not so sure they would help a lot if there was an issue though.

Use only verified vendors.

[camoclad]

That's sweet. Keep us posted on time v effort v return. I'm still on the fence about getting one of these.

[RiverRat1]

That's sweet. Keep us posted on time v effort v return. I'm still on the fence about getting one of these.

I can already tell you buying 1 or 2 dump trucks of gravel would be easier. Will take years for the crusher to be cheaper. But I don't want/need another freaking rock on my property LOL

[60 Deluxe]

Super high maintenance machines and the parts are not cheap. I knew some of the folks that built the commercial stuff back when I was working. Without even doing the math, I can assure you that those little toy crushers will cost a whole lot more than just buying and hauling in what you need.

[RiverRat1]

Super high maintenance machines and the parts are not cheap. I knew some of the folks that built the commercial stuff back when I was working. Without even doing the math, I can assure you that those little toy crushers will cost a whole lot more than just buying and hauling in what you need.

What's high maintenance about it? I need to be prepared.

I have extra belts, crusher plates, and air/oil filters. What else will go bad?

[PondPopper]

Crushing rocks… That looks like it could be addicting. Cool machine.👍🏽

[60 Deluxe]

What's high maintenance about it? I need to be prepared.

I have extra belts, crusher plates, and air/oil filters. What else will go bad?

Your main wear parts will be the internal working parts of the crusher. There are a couple of ways that those things are built and I can't see the setup on the machine in question. If it is a setup with solid hooks on a drum passing through a comb, the wear will come on the edges of the hooks and edges of the comb teeth. Those surfaces are hardfaced. Repairing hardfacing is not cheap or easy. Replacing the drum and combs is not cheap. Same goes for a setup where the drum has some sort of hook or tooth passing an anvil. The size of the output is determined by the clearance setting between the shelf or shelves on the anvil and whatever part on the drum that pushes the raw material. With use, the anvil will get chunks knocked out of it or whatever tooth or hook on the rotor will get chunks knocked out of them. You will notice less uniformity in the size of the material being discharged. At some point the product will become too large for your intended use or the material being fed into the machine will lodge between the two cutting surfaces and lock the machine down. This was a major problem for us because the rotor weighed over six thousand pounds and was driven by a 150 horsepower motor through a triple reduction Falk gearbox. There was a lot of torque in that machine. It took a lot of force to unlock it. Again, the answer is the renewal of the wear parts before this starts happening. Our crushers had quite massive hooks and teeth working at perhaps twenty rpm crushing animal bones. Animal bones are a lot softer than rock but we still saw the same wear problems as the rock crushers. It just took longer to happen. Knowing what I know, I wouldn't even consider buying a machine like this. If you have already purchased this machine I suggest that you are very careful about what type of material you put in to it. The video appears to be a sandstone of some sort being fed very slowly.

[mjhaverkamp]

Making little rocks from big rocks, looks like a lot of fun.

[RiverRat1]

Update after lots of use.

Pros:
1. Machine is very well built. Starts quick and easy. I'm actually impressed how good the engine looks.
2. It seems to run for ever on a gallon of diesel. I must have asked my wife 20 times if we added diesel. Kept thinking it has to run out one of these days.
3. Everything seems to work like the stabilizing legs etc.
4. It's nice having all the gravel I want on standby.

Cons:
1. Took a little to get used to running which was expected. It's a Chinese engine so I had many questions. But they have a chat where they answer all questions pretty fast.
2. Needs to take slightly bigger rocks. Rocks longer than 12" sort of get stuck if not put in correctly. A bigger machine costs a lot more though.
3. It's a ton of work to feed the machine (obviously). But I pick up rocks anyway but usually drive and dump them in low spots across the ranch.


I figure I'll be done with this machine in 6 months if I have time to use it a lot, 12-18 months if I take my time. Then I'll try and sell it.
The next review is seeing how long all the wearable parts last (belts, oil filter, crusher plates) I have extras of all of them but still curious when I'll need them.