Mini Concrete Chrusher

[Nac]

I saw this web site while surfing. Red Rhino (http://www.redrhinocrushers.com/) This looks very intresting it would be great for the house demos and garages i nock down saving me on continer fees. Was wondering if this machine can be rented out to other contractors. It cost about 55,000 i figure you can rent it out for 500 a day min. plus most lickly you are going to need support equipment a mini x with a grapple for a nother 500 a day. What do you think or this thing just a toy.

[dayexco]

That machine is TOOOOOOOOO cool!....we do a lot of parking lot demo jobs, acre or less, that machine would be perfect for what we want it for. only 55K for that?

[dayexco]

after looking at the website, it looks like they're coming up with 2 larger models, the 45 ton per hr. one i think would fit our needs pretty good

[CascadeScaper]

That thing looks awesome! Definately a great little machine. We don't do much demo but if we did that would be on my wish list. Check out the demonstration video, pretty cool.

[Nac]

They sent me the whole product specs and a DVD on it. The only thing is that the crusher opening is 18" x 8" so all the concrete would have to be reduced to that size having to have a hammer on the job to reduce some concrete to feed it into the crusher. No problem for me since i have one but if you try to rent out the machine you will most likely need the crusher, the mini x with a grapple and hammer so you are looking at 1,500 a day would a cocntractor pay that a day.

[bobcatuser]

I have seen the mobile crushers Hitachi make, they rent for $500 a day and are rated at 40 tonne per hour. In the Vancouver area there are many asphalt plants and recycling yards that will take clean asphalt or concrete rubble for free. Recycled 3/4" minus sells for $6-$7.50 tonne. On some big demo jobs the contractor will bring in a mobile crusher and give away the 4" minus if you send a truck to pick it up.

[digger242j]

The only thing is that the crusher opening is 18" x 8" so all the concrete would have to be reduced to that size having to have a hammer on the job to reduce some concrete to feed it into the crusher.

I dunno. That sounds pretty labor intensive. Think in terms of how many pieces that hammer would need to make--if the opening were twice that size (36" X 16"), you could put a piece that big into it. But, for the smaller opening, you'd have to break that 36 X 16 piece not in half, but into fourths, and hope that they all ended up roughly equal. In other words, as the size of the opening gets smaller, the number of pieces you need to make, and the effort required to make them, increases geometrically. That just seems like a lot of hammer work...

[tylermckee]

Seems like the opening is a little small, you have to really bust the stuff up before you can run it through the machine. seems like it would work great though once you hammerd the crap out of it.

[Steve Frazier]

My only concern is they don't mention rebar. I didn't see any in the concrete they were crushing either. I'd want to determine how the machine handles rebar before I'd consider anything, nearly all the stuff I remove has rebar or wire in it.

[Squizzy246B]

I guess it would be the ducks proverbials for bricks and pavers but the concrete, as mentioned, would be another matter. I believe these types/size machines are the way to go in the future. If you look around at screening plants for example, they are big and difficult to move, and they cost a $$$$$$$$$. On some of the smaller lots we do there is often tons of dirt taken away just because its mixed up with all the crap. A small plant the size of that crusher, fed by a skid, will become viable I believe.

We are already having some restrictions placed on our resources and dump fees are not going to get any cheaper. I can see how this machine would be great just not how you could make it pay its way...Yet.

[itsgottobegreen]

it says it can crush rebar. :drinkup

"Reinforced concrete & Steel
For steel and reinforced concrete it is recommended that you protect your conveyor belt and crush this material having
removed the conveyor – this takes approximately 6 minutes."

[Steve Frazier]

Thanks! I guess I missed that.

[Dozerboy]

I have worked a lot with crushers and unless you could use the crushing’s on site it would be a waste. Also think of how may time you may have to handle it: size it, stock pile it, crush it, then place it or export. And steel is a bigger PITA making sure there not pieces sticking out of the sides of the concrete, picking out the steel, and flat tires. And a crusher is a very high maintaince.

[stuvecorp]

Looks cool, if I had extra money it would probably go for the size that could do 45 tons per hour. The thing looks like a overgrown copy machine but for the right conditions it might be the ticket.

[bobcatuser]

I saw this bucket jaw crusher advertised in a magazine. The manufacturer claims you can produce 1" minus for $3.00 ton.

www.ecocrusher.com

[NJ Demo]

I have seen the Eco-Crusher down in Atlantic City seemed like it was a good product. The company using it was American Demolition, he is on the cover of WHEN Mag. Would like to know if anyone has any experience with it. I know this thread is old but searched for it, if it gets the cover must be pretty credible, right?

Also the Red Rhino seems prety good especially in parking garages where I have to figure out a different method of doing things everytime.:confused:

[Flash2004]

I've seen one of these red Rhinos working at a demonstration Expo in Sydney Australia and was completely disillusioned following from what I hoped to see based on their web site.

If you need a small site crusher like this and you can find one, go for the Nakayama/Yanmar 4.5 tonne models. Such professionally designed and made little crushers in comparison. They'll close down to 3/4" too but the intake size is similar.

There's one here in New Zealand done 6500 hours working in remote locations and usually flown in by helicopter. No major repairs in that time either and only one set of repacement jaw and cheek plates. The Rhino would have shaken iself to bits in a quarter of that time.

Best bet is the Komatsu BR100J which weighs only 10 tonnes and we've had 35-45 meters per hour out of them on different jobs at 65mm output even when wet feed is all you can find. A very good model.

We've had the Hitachi HR240G as well but no power in comparison, it'll stall on bigger, harder rock. cheers

I have seen the Eco-Crusher down in Atlantic City seemed like it was a good product. The company using it was American Demolition, he is on the cover of WHEN Mag. Would like to know if anyone has any experience with it. I know this thread is old but searched for it, if it gets the cover must be pretty credible, right?

Also the Red Rhino seems prety good especially in parking garages where I have to figure out a different method of doing things everytime.:confused:

[stumpjumper83]

Flash, what type of cost are you getting into replaceing a set of jaws and cheek platesfor that nakayama? Also how are they for getting parts for? I'm looking at getting a small crusher for hadling flagstone scraps.

[Flash2004]

Flash, what type of cost are you getting into replaceing a set of jaws and cheek platesfor that nakayama? Also how are they for getting parts for? I'm looking at getting a small crusher for hadling flagstone scraps.

I was quoting a customer of ours experience with the Nakayama and not our own. We own a lot of crushers but usually only hire them out for about 1000 hours before they sell. We've only owned one Nakayama 55 and it didn't need jaw plates etc. at only 200 hours when I bought it, so I can't say for sure what they might cost.

I buy a few jaw and cheek plates though for all the different models we have and have had before, so I'd hazard a guess at say $600 - $800 each for the fixed and swing jaws and about $400 each for the cheek plates. I'd get some replacement cheek plates laser cut locally from Bisalloy or Hardox 400 to save freight costs, they're usually a little bit cheaper then.

If you have a Nakayama nd seem to be getting charged a bit too severely for your jaws I can get a price fro new ones from Japan. Send me a pm? cheers, Gordon

[Flash2004]

Just read your post properly, didn't notice you hadn't bought a crusher yet. Just a suggestion; when it comes to buying a crusher, especially a jaw crusher, the cost of replacement parts like the jaws etc. are usually the least of your worries because they should last 1000-2000 hours.

The Nakayama is most likely sold in the US as a Yanmar or possibly even Kubota, they share the engines, control banks etc. and track hydraulics etc. with most of their digger or small loader range so will be readily available. Nakayama - who only make the actual crusher element itself - has been around forever and even then use the likes of SKF bearings etc. inside. I think I'd have any part I wanted inside of a week and I wouldn't buy them from the local dealer necessarily - unless he's offering good value.

[95zIV]

I dunno. That sounds pretty labor intensive. Think in terms of how many pieces that hammer would need to make--if the opening were twice that size (36" X 16"), you could put a piece that big into it. But, for the smaller opening, you'd have to break that 36 X 16 piece not in half, but into fourths, and hope that they all ended up roughly equal. In other words, as the size of the opening gets smaller, the number of pieces you need to make, and the effort required to make them, increases geometrically. That just seems like a lot of hammer work...

Digger, I think that you're a little off on this, the size of the jaw is 18" wide and 8" open, that means with a piece thats 36X16 you wouldn't have to break it at all because it's only 16 inches wide and you could feed it in the long way. If the piece is over 8" thick that's a different story, but for the kind of work I can see with this machine, shop floors or something similar to that you'd probably be able to fit in a pretty good sized chunk, especially if you are feeding with a machine with a thumb.

[stumpjumper83]

ok flash, how about a crash course in jaw crushers. What I think I'm looking for is something with a 18-24" x 8" hole. I need to be able to get from 1" to 4" minus material with a single pass. I'd also like the machine to be able to transported on a lowboy without oversize / overload permits. If it was a towed unit that would be fine too. Production wise 20 ton per hour would be fine, no more than 40. As for feeding the unit I plan on using my jd 450c trackloader. For power, either it needs to have its own diesel or it can be pto powered as long as it doesn't take more than 125hp.

The material I'll be crushing is pa bluestone or flagstone. Its best described as limestone that comes in layers. The layers varry from 1/4 and under to 8" thick the deeper you get in the quarry. Most quarries quit at about 6" rock and move on to better areas, so a thick jaw isn't a necessity. Most beneficial might be a interlocking rippled jaw so that a 1/2 x 12 x 12" pice doesn't slide thru when the jaw is set for 1.5" minus.

Idealy I'd like to be able to load both the crusher and the deere on to a lowboy then pull the trailer with my tractor. But I don't know if that is feisable.

How am I doing, is what I need out there, or do I have to make it?

[Flash2004]

Digger, I think that you're a little off on this, the size of the jaw is 18" wide and 8" open, that means with a piece thats 36X16 you wouldn't have to break it at all because it's only 16 inches wide and you could feed it in the long way. If the piece is over 8" thick that's a different story, but for the kind of work I can see with this machine, shop floors or something similar to that you'd probably be able to fit in a pretty good sized chunk, especially if you are feeding with a machine with a thumb.

The rule of thumb (even if you have one on your excavator) is that for anything close to a reliable glitch free process, you should be restricting your feed size to 2/3 of the opening size especially in concrete because it is more inclined to bind with other pieces through its greater friction. You can surely work through bigger pieces but you have to expect production to drop and frustration to mount.

I haven't seen everything of course, but I've never seen anyone feed a crusher piece by piece and make a dollar.

[Flash2004]

ok flash, how about a crash course in jaw crushers. What I think I'm looking for is something with a 18-24" x 8" hole. I need to be able to get from 1" to 4" minus material with a single pass. I'd also like the machine to be able to transported on a lowboy without oversize / overload permits. If it was a towed unit that would be fine too. Production wise 20 ton per hour would be fine, no more than 40. As for feeding the unit I plan on using my jd 450c trackloader. For power, either it needs to have its own diesel or it can be pto powered as long as it doesn't take more than 125hp.

The material I'll be crushing is pa bluestone or flagstone. Its best described as limestone that comes in layers. The layers varry from 1/4 and under to 8" thick the deeper you get in the quarry. Most quarries quit at about 6" rock and move on to better areas, so a thick jaw isn't a necessity. Most beneficial might be a interlocking rippled jaw so that a 1/2 x 12 x 12" pice doesn't slide thru when the jaw is set for 1.5" minus.

Idealy I'd like to be able to load both the crusher and the deere on to a lowboy then pull the trailer with my tractor. But I don't know if that is feisable.

How am I doing, is what I need out there, or do I have to make it?

I really don't think you're going to be effective with your sights set on an 8" opening. From what you describe you're dealing with a sometimes longer slabby type product and that is going to need plenty of room to come along the feeder and make the right angle turn down ito the jaw. Otherwise you'll get 'bridging' where the entrance becomes blocked.

For material like that sometimes an horizontal shaft impactor (HSI) is better where the feed mostly doesn't need to change direction as it goes into the crushing chamber. I find one of the biggest reasons an HSI might not be used is because of rapid and expensive wear. You're in limestone so that is not a factor - or shouldn't be. They can also tend to generate a lot of fines but will definitely give you a greater size reuction in one pass with none of the 'slivers' passing through.

I don't know if you can get this model in the US but if a jaw is what you really want, then what you're describing is ideal for the 9.7 tonne (21,230lb) Komatsu BR100J 24" x 13" track mounted jaw. It has a plate feeder usually but is also available as a BR100JG with a vibrating grizzly feeder. We buy them used from Japan where they are often found in their domestic market - but it may be a Japan domestic only offering. Certainly the two we've imported are not EPA compliant but one is a 1995 model (about 2600 hours)so pre EPA regulations and could come to the US. They're relatively cheap, we sell them under 3000 hours for US$73,000 and they're as reliable and easy to use as you could ever imagine. See if your Komatsu dealer can get you one?

Komatsu also make a BR60R which is another sub 10 tonne machine but this time an HSI on tracks. You can get older ones with very few hours on them and they'll also be pre EPA rules.

Another mobile jaw model is the Nordberg LT63 which may be available in the US but that's a 17 tonne machine. They're also getting up in price, I know of one here but its likely to cost US$120,000 just to by, it has a Deutz engine and is a very low hour 1995 model (pre EPA) so it could come to the US.

On softer rock as you describe the Hitachi HR240 - a very similar direct competitor to the Komatsu BR100 (but with less power) could be good. They're similar money to a Komatsu too.

If you're wondering about these older machines being still low in hours, so do I. But when I get them here they are genuine. I don't know what the Japanese do (or don't do) with them but I don't argue. They still sell them as a year 1995 and priced the same as others with the normally expected hours. They are only very few in comparison, but we find them occasionally and when we do, we buy them.

When in Europe recently I discovered the Rockster range of jaws and HSI's and they look very good and quality machines. They have some under 20 tonnes but with the strength of the EURO vs any other currency yu'd want to be holding your breath and sitting down when you learn the price of them. It does seem though that the Japanese and Europeans have the lighter crusher market to themselves. The Japanese have the advantage for now with the more favorable exchange rates, but I personally think their equipment is better too.

I hope I've been able to give you a few ideas there. Gordon

[stumpjumper83]

One reason I was looking at a jaw was one pass operation with minimal cost. If a horizonal shaft impactor will give me better results, and equal or lesser cost per ton, great. Hsi would be a simex crusher bucket?

http://www.youtube.com/watch?v=uPf8n6uHKb0

[Flash2004]

One reason I was looking at a jaw was one pass operation with minimal cost. If a horizonal shaft impactor will give me better results, and equal or lesser cost per ton, great. Hsi would be a simex crusher bucket?

http://www.youtube.com/watch?v=uPf8n6uHKb0

Nothing like this crusher bucket sorry, take a look at this one of ours:

http://www.youtube.com/watch?v=lBC5rzdo0c4 - its too big for you but you'll see the kind of product flow it gives in concrete at least. You'll also notice how the feed carries on into the crusher opening with no change in direction. The Komatsu BR60R is around half of this one and is on tracks - and half its price too.

[Flash2004]

Another rule of thumb is that a good impactor gives you a 10:1 reduction ratio in one pass. this means 12" going in = 1.2" coming out. This compares with 4:1 on a jaw. We all know a jaw will do better than that, but the designers want only 4:1 (12" going in 3" coming out) any any more than that adds strain to the mechanism and relatively innefficient operation with higher jaw plate wear.