Excavator Rocksaw Cutting Walls....Sumitomo SH350

[DARKSTARBLACKOPS]

these machines were used to build the pyramids haha

[milkman826]

one big arse pizza cutter..............

[1grinder1]

I need ear protection just watching the video...

[501video501]

will this cut my bath salts for me?

[bullmoosecalhoun]

Do you have blades for Granite???

[BrownvilleMELogger]

Sick, never seen this before, anyone who wants to subscribe to this guy needs to do it!

[punhoss]

This job SUCKS>

[lexichronicle2]

holy shit!

and I thought I was doing a good job coring the poo pipes at home

[SuperNobama1]

dude spraying water probaly has no hearing or lung /eye protection

[KartCMP1]

My mistake, I meant methodology

[KartCMP1]

@ke6gwf American technology? Please, not a single machine in your quarry is made from American material, not made in America nor with any American methology. The quarry you work in is American based for relevence, but owned by a network of European companies. I assure you, American technology doesn't exist

[ke6gwf]

@KartCMP1

You assume too much!

You know absolutely nothing about where I work, what equipment or technologies we have.

Being owned by a multinational company doesn't mean that it isn't still american technology. For instance, if you buy a Volvo asphalt paver right now, it will be Ingersoll Rand/Blaw Knox technology. Volvo wanted to expand into that line, so they bought one of the best players and slapped their name on it. Buy a Volvo Grader? It's a Champion. (ok, that's from Canada... :)

[ke6gwf]

@KartCMP1

How about Caterpillar? Any of their larger stuff is still only made in the US, and it's all still designed here.

The euro's are using more and more computer driven stuff, but they are using american computer technology to do it!

I specialize in control systems and hydraulics, and really like a lot of the euro designed stuff. It is expensive though!

The US designs don't have the bells and whistles, but they are clean simple and tough.

[Prozackityzac]

bite me!

[NickLarsen20]

shit that looks boring

[patrysie71]

Turn that disk at a 1000 rpm's (like someone already suggested) and stuff will burnup and break in no time

[Sneadster]

probably a rookie....eveyone has to start somewhere....

[quiteobserver]

Japanese excavators RULES :D

[kjkolkowski]

@FUCKINROCKIT  the More RPM's the Better! hahaha

[kjkolkowski]

@FUCKINROCKIT ... I would put a 300 hp cat generator on that cutting wheel and get it spinning a thousand rpm's. get it spinning fast like a Skill Saw then we'll get some rock moving!

[Myfaceisonfirenow]

@kjkolkowski That's why America can't invent anything new and Asia is miles ahead of them. They have no patience.

[kjkolkowski]

@Myfaceisonfirenow

invent anything new? if that saw could cut faster we'd have the damn bridge built already and on to the next project!

[KartCMP1]

An it starts to crumble 5 years down the road, like its been said, no patience. Any one with a brain knows slow spinning saws are high in torque, it's the most effecient way to cut anything hard. North American engineering and innovation is a disgrace when compared to most of the world. Had this same task taken place in America... there would be a whole lot of dynamite required.

[kjkolkowski]

@KartCMP1 I F-KIN LOVE MERCA! all's you need is horsepower and 100,000 rpms. you'd be done before dinner!

[protectoroffaith]

@kjkolkowski and the friction would melt that blade in 15 seconds

[kjkolkowski]

@protectoroffaith

that's what the guy with the hose is for.

and those saw blades are a dime a dozen

[protectoroffaith]

@kjkolkowski ya not really if there diamond blades there about 15000 bucks a peice and still 100000 rpm theres not enough water coming out of that hose to keep it cool

[kjkolkowski]

@protectoroffaith

all you need is a wurtzite boron nitride or lonsdaleite (hexagonal diamond) blade.

both are stronger than your silly "diamond" blades.

or just two hoses...

[ke6gwf]

@kjkolkowski

All you need to do is grow a brain. (wait, did I just thrown out a senseless insult? I musta been reading too many youtube comments and it's rubbing off on me! :)

Let me rephrase that: You should research the subject you wish to comment on prior to trying to sound like you know what you are talking about.

Yes, they could use water to cool a high speed blade, but then you would need shields around the blade to contain the water (like a tile saw) Large blades can't spin fast anyway.

[kjkolkowski]

@ke6gwf

you are sadly mistaken. you can get big blades spinning fast, it's called horsepower! slap a great big diesel engine on there and you'll have all kinds of speed on that blade!

[ke6gwf]

@kjkolkowski

Sorry, ran out of room, let me expand on this, and maybe expand your knowledge a bit.

The larger the blade is, the slower you can spin it. A 3" die grinder cutting wheel can spin @ 20,000 rpm, but you spin a 7 1/4" Skilsaw blade that fast and it will explode because the centrifugal forces are so much higher on the outer edges of the blade. Also the larger you get, the harder it is to keep it balanced, but the more important perfect balance is.

And if the blade jammed, look out!

[kjkolkowski]

@ke6gwf I've had a rip saw going twice that fast before, no problem.  and you have to keep those big blades spinning fast to keep them from jamming!

[ke6gwf]

@kjkolkowski

heh, I would like to see a saw going at 20,000 rpm!

A normal skill saw is around 5000 RPM.

Ok, say you have a 5 foot diameter blade spinning at 1000 rpm. The rim is moving at ~350 miles an hour. It is going to have to be pretty heavy to be able to withstand cutting rock. Say 2000 pounds? How much inertial force is in that blade? What happens if it jams? Either the blade is going to be destroyed, or the machine is going to go flying! The teeth will be turning into rockets... Fun!

[kjkolkowski]

@ke6gwf once you get it spinning 400 mph nothing will stop it, and that my friend, is called "Productivity"

[ke6gwf]

@kjkolkowski

Yup, productivity right up until the operator binds the blade or hits a chunk of granite or places the blade wrong so it kicks back and bends a rod or blows a hydraulic line or strips the teeth or sends the machine flying.

I was wrenching at a place that had a brush buster mower for a mini-tracked loader (large tracked bobcat). It had a 3'x1" steel disk with hardened flapper blades bolted to the edge. It spun around 300 rpm. That thing would toss the 15,000# unit if it hit a stump

[ke6gwf]

@kjkolkowski

After about 1 month, the blade sheared the mounting bolts off and went spinning down the field.

And it was designed so if it hit anything hard and firm, the blades could flip back so you would just be riding on the smooth edge of the disk.

If you had fixed teeth instead of flails, you'd rip stuff so fast!

Youtube for "saw races" to see what your machine would look like!

[kjkolkowski]

@ke6gwf  but once you get into the thousands of RPMs it's all harmonic vibrations instead of the jarring from low rpms. ever try to shove a piece of wood into a table saw that wasn't turning very fast? my point exactly.

[ke6gwf]

@kjkolkowski

It's harmonics that make stuff fall apart.

Ever seen a table saw that's slightly out of balance walk itself across the floor?

And again we get back to the problem of the larger the disk, the higher the rim speed is and the more precise the balance has to be. Larger jet engines often only go to ~5000 rpm, and those are precise super clean machines.

You chip a blade on one and it shakes itself apart.

With a rock blade you get some mud buildup on one side and you have the same issue.

[ke6gwf]

@kjkolkowski

Umm, the guy with the hose isn't putting water on the blade, he's misting for dust control.

I would guess that just the cutting teeth on the blade are quite a pile of dimes each!

[ke6gwf]

@KartCMP1

I guess you haven't seen rock quarrying technology in the US.

This is low-tech compared to some of the stuff we use.

Not that there is anything wrong with this setup, it defiantly has it place!

[farrellhunter]

Hey great vid, for all you school leavers thinking of getting into the earth moving industry. That's a sure quick way getting silicosis and dying in screaming pain in 15 to 20 yrs...

[BradyHill1]

will the pins and everything else line up to mount the saw 180 degrees from where it is so you could square the other corner off?

[panicoenduro]

questo è interessante !

[RuleZ2k7]

wow

[DawnohopeBridge]

The front window is on hinges,(step out if in emergency) but you wouldnt expect a health and safety inspector to know that...

[viktorhansenoslo]

So basically the driver is caugt in his cage if the fukkings machine should catch fire or stop or something should fell down on him or there would be a instant flooding of the hole.

(Just watch how close he has maneuvered his machine to the wall - in order to get out from the wall he would have to jiggle the machine like 40 times back and forth)

Me being a saftety inspector would instantly fire these jackasses from ever doing this kind of work again.

[runiemage99]

i was just thinking that but yet again i would do the same thing if that was the only way to get the job done and like you say if anything were to happen i would just break the back window unless it was caged but not all the windows should be caged, anyway who gives a fuck you have to take risks in life and plus health and saftey inspectors are arseholes always coming on site and checking up, but i spoze there only doing there jobs.

[CHRISPATCH69]

@runiemage99...haha totaly agree with you...all they do is say ur not alowed to do this and that and everyone one is like wtf are we meant to do then lmao

[menameischris82]

or he could just bust the front window and jump out

[CHRISPATCH69]

@viktorhansenoslo...you will find that the operater could climb out of the front window or remove the back window without even braking it....oh and just a quick question how else would you do this if they are doing this the wrong way??????

[Ozzy4eve]

victor, actually all he needs to do to get away from the wall is a simple pivot maneuver that takes a few seconds. It still wouldn't help if the wall caved in.

[ke6gwf]

@viktorhansenoslo

Although I agree with the possible safety problems, if the front window was kept open and set up as an escape route (Ladder, etc) it shouldn't be a problem.

Also I take it you have never spent any time operating an excavator.

It will take about 4 fluid moves to get away from the wall. You pull out of the cut and set the blade back down on flat ground picking the front end of the tracks up, use travel and swing to spin the tracks to 45 degrees from the wall, and drive away!

[wahash22]

can this saw cut marble rock???

[Duckyistrippin]

when you dig a hole, the corners are round. the rock saw is cutting out the fillet so the corners are square.

[pancikasasa]

FETT! Aber ich glaube, dass Hydrodemolition um eine Spur lauter ist - und noch fetter!

Trotzdem cooles Video!

[jordanlovespplz]

mmm i believe he is squaring off the wall and making them stright up and down

[MrJoeyMonster]

i dont get whats happening

[browner5]

hes cutting a hole in the wall wats not to get?

[MrJoeyMonster]

i know what hes doing

but i dont get how its happening

[slambert00]

Cutting with a huge circular saw into the rock. The man on the ground are apreying water on it to cool down the blade and prevent the dust from spreading to much.

[BeauEvil]

Apparently, that "he" is NOT "cutting a hole in the wall". The circular saw blade is cutting a notch into the rock "floor", right against the "wall"

[kjkolkowski]

i don't think i would have the patience for this...

[huggysthejellyfish]

@kjkolkowski thats when u take a 30 min brake in doing it to chase the guy with the huge saw that as the water hose :D

[kjkolkowski]

@huggysthejellyfish

I need to cut down some trees, maybe this machine would be just the tool for the job!

[joecool248]

@kjkolkowski once you're in the machine its a whole different world.

[kjkolkowski]

@joecool248

yeah I operate heavy equipment for a living, but at least in most excavators you get to be a little more mobile and actually move around a little bit.

this looks like you might make it 20 feet per day lol

[Merc963]

Anybody needing a haircut xD

[mvadinan540]

Ill bet that blade cost a good $100.00 maybe even $150.00

[bloobbloob1]

lmfao try about $5,000

[mvadinan540]

I was being sarcastic it probably cost's $50k-$75

[pbb113]

Very unique machine. Possibly a mini Tunnel Boring Machine (TBM). He he just joking.

[dozerdriver1962]

i wonder what kind of hydrolic flow the machine would need to run that saw ? any ideas?

[dgmarklin]

I dont think its safe to place the machine right next to the wall, blocking the operators exit. Thats bad.. Plus the guy in the bottom prob should not be there

[rangiemadharry]

most jcb's have an escape hatch behind the seet

[edbenzo]

pity its a sumi not a jcb but yeah window comes out anyway

[jdawgsworld]

umm...i said just a little off that side...that's a big saw

[pjaussiemovies]

So thats how they do it

[isilder]

It gets dangerous fast.

I can see that they have concreted up the unstable material at the top, but even a small bit of concrete rolling down can smash that guy with the hose pretty hard.

[kimchiman1000]

Man that would get boring fast!

[philippelahaie]

lolll Yeah ur right,,I dont see myself doing that 10 hours,,everyday

But it would be more experienced

[TokenTombstone]

lets hold hands and jump into it!

[IIAdolescentII]

lolz

[Liln21]

kewll