Cobra Crusher - Portable Rock Crusher for Sampling Gold Ore

I used this to grind 20lbs of quartz/sulfide ore and had a good turnout; like a gram. Good ore, yay me. The chains inside were totally destroyed after this, one fell out completely. To remove the crusher and replace the chains requires tools to pull out a bearing; fairly specialized equipment. Stuff I don’t own and have no desire to own. This item is designed for single use unless you have a fairly extensive tool supply and some skills. I repeat this is a single use $400 purchase. I hope you’re ore is worth that much. Mine wasn’t and this is practically worthless now.
Edit: it’s designed for sampling. You get 20 lbs of samples and then it’s useless.

It does the job

The hand made rock crosher/dolly well built, crushed my first rocks today. Again we'll built. I did utilize my sds plus with post attachment with the rock crusher...work smarter not harder. Very happy with purchase. 5-stars.

The bearing was and still is froze, you can barely turn it by hand, let alone with a grinder