New Surface Grinder!
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- เผยแพร่เมื่อ 25 ส.ค. 2024
- New to me machine:
This is a Kent KGS-200 surface grinder, an 800 kg beast.
It is ridiculously solid, the name plate badge on the front is thicker than my mill column!
There was a reasonable amount of work to install, wire up and get this machine running
Note these are not instructional videos, I take no responsibility for any injury or damage arising from replicating the activities shown. Use your head, hire riggers and movers. Get an electrician to do your wiring
I have a patreon account if you wish to help support the channel. Through this you can get early access and more
/ tommygmachining
Some examples of surface grinder cool cats:
Stefan / syyl
This Old Tony / featony
Tom Lipton / oxtoolco
Robin Renzetti / @robrenz
![ว้าว!ลุงบีมแบกทองมารับขวัญหลานกันยกบ้าน [cc] แดนแพทตี้ SS2 | EP.49 |](http://i.ytimg.com/vi/Osihq1OAs-4/mqdefault.jpg)
Great effort. I had no idea surface grinders use a wire rope mechanism.
Neither did I! Some are a rack and pinion or a hydraulic piston for automated ones
Ok, there got to be a trick in here somewhere... Found this channel today. And now I have watch ALL of your videos but maybe two.
Like what you do with not very fancy tooling and that you use the correct phrases/words for the tech stuff.
The accent gives that final touch. 👌
Cool new toy......i'm jealous!
It's going to be fun to learn!
Amazing how sensitive it is
congratulations! Looking forward to future projects using the grinder.. Thanks for sharing
Me too! Thanks for watching
Thanks Tommy and keep on keeping on.
Will do!
Thanks for watching!
very good video..thanks for your time
More to come!
Thanks for watching
I had a neighbor with a bobcat come round and pull the thing off the pickup truck with a pair of forks and put the sucker in the garage. Any other approach was just too scary.
Always wanted one of them in my shop but just turned 78 so I may have missed the boat, these days just watching someone else muscle one around makes my bones ache.
I was a bit worried, it got close to being too difficult to handle. The backup plan was a forklift if need be
Thanks for watching
Very nice toy. You gonna have lots of fun with it.
Your Nescafé is gonna have a different taste after this treatment.
It's a new blend. Essence of gritty coolant
Nice machine! grinding things flat and parallel is a bit of an art, it will be interesting to see what you put her to use for :)
Yeah I'm seeing that, for now I'm just working on surface finish and flatness
Lots of fancy tool making to come!
I've done thousands of lifts from a few hundred lbs to upwards of 50 tons. The video made it tough to check how much actual clearance you had for your sling positions from the engine hoist's hooks, but if possible a short 1/4" / 6mm steel sling or a pair of them from the engine hoist's hook through the grinders open column with that ratchet strap and clevis attached to the steel sling eyes running down to the rear of the pallet would have given you an adjustable third or fourth lifting point that would have allowed fine adjustments so the grinders unbalanced weight and pallet it was on could be lifted and lowered in a level condition. The secret to moving anything heavy is to slow down, not be in any rush and think things through completely. Get unlucky just once and it's then a failed lift with a good chance of possible injuries or equipment damage. And with any straps you want to ALWAYS cushion where they touch the item being lifted. Something as simple as a layer or two of cardboard between the sling and what your lifting can work. Scraps of old carpet can work even better. Yes there made from (or should be) from cut resistant material, but there a long ways from being indestructible.
Even though it's quite solid, I'm not sure if I would want to hang the whole machine from the column
I had to do the dual lift because I would be massively overloading a single hoist at that reach. I allowed a dual lift factor for the load
You are right about improving the lowering method, but I was already rigged up at the front and I was comfortable enough with the method
While it looked cowboyish and spur of the moment, I had put a week of thought into this using the equipment on hand.
Also yes I should have cushioned the column strap around the corners. It didn't have a great deal of load, so I decided to run with it
All valid points, thanks for commenting
@@TomMakeHere Nope, I should have been a bit more detailed, I meant run one or two short slings through the open column as you first had it with the sliding guards removed, then shackel one or two of your ratchet straps to those and running down to the rear of the pallet. That way the ratchet straps could be adjusted until the pallet was level during the lifting and lowering. Grinders are high precision and one machine I'd not want to ever lift wrong, so I wouldn't have lifted the whole machine by the column either. At the end of the day it all worked out as you did it. I've just learned from past mistakes to keep the load level as much as possible as it's usually easier, quicker and safer most times.
Luckily it wasn't me, but I got to see the aftermath of someone who didn't keep things level and totally destroyed an almost new $180k multiple axle specialized ultra high weight highway trailer by dropping a 45 ton rock crusher mantle on it. I'll bet that even sounded expensive when it happened. :-)
Nice new-to-you machine! Should serve you well. Would love one but no space or funds for something that large at the moment, lol. Looking forward to seeing your upcoming projects with it!
I didn't *need* it, but it looked too good to pass up
I'm keen to see what I can do with it too!
not sure if anyone mentioned it yet, but you need to add some holes to the vfd box or its gonna burn in no time, the heatsink is useless without air flow. i understand that you want to protect it from dust, but that wont matter much if it overheats by itself
Good point I should have shown it
There are holes in the bottom side and at the back at the top for air
I'd expect some dust to get in there, but it should be ok
The "Stone" is a grinding wheel and i think i would throw it away now that it has had holes drilled into it as i think it would have been compromised, the wheel and hub are balanced as a pair when assembled, make up a little balancing jig with knife edges, not want to continue been negative but that may not be the best use for gauge blocks, i think you will enjoy the precision of surface grinding
Yep agree, the manual had a misleading image and it didn't look like the hub could come off. My intention is to initially balance properly (done today) and then make a knife edge jig with a surface ground top after the initial balance. And then rebalance with the better jig
I've seen plenty of professional grinders balance with drilled divots with no issue. That said with the chipped edge etc, I have new wheels on the way
Thanks for commenting
Nice. Lucky you
I may have broken the annual tool budget
Ah well lots of fun to be had
very nice, - what they said!
It's going to be a good thing I'm sure
Awesome. My machine is teflon ways. Not sure how it’ll perform compare to ball type.
I'm guessing, but I'd say teflon will be more rigid but not quite as smooth
It should be fine
Ca Lem is in the house.
"I'm not an electrician, shocking!" Great vid 👍😁👍
😁
Cool video. Just today I was looking at a couple of dirt cheap incomplete machines. But I just dont think I need 1 that badly (yet)
Do it! Give in to the temptation...
That would be a cool project to make one work from the incomplete machines
@@TomMakeHere oh man, still not finished with my incomplete atlas 7b repairs..lol th-cam.com/video/YhWpG7JJXps/w-d-xo.html
Congrats! I'm looking to buy a surface grinder soon myself.
You can usually rearrange the motor windings to run at the lower voltage, which saves needing the high volt vfd. Could be a bit of work on three motors, though! I did a video a few weeks back on rewiring (though not rewinding) my Bridgeport motor if you're interested for future reference.
Cool, I'll take a look
If you need an inch say to pass a thing through a door, deflate the tires to 2/3 or a bit over half pressure on the trailer, it works like a charm... Also, here the first time, prezzo`s fault for sending me here... Also, just got my self a surface grinder, tho, it is a behemoth compared to yours... But, on the bright side, z and y axis are removable and can be remade easily and the machine can be brought to factory spec in little effort, whereas the x, it will need a teflon strip to please me...
Good tip, thanks!
Very very nice. Should be some serious fun
I hope so!
Thanks for watching
Kent of a job indeed. Nice work mate!
Cheers!
Thanks for watching
Much awesome!
Lots of fun ahead!
Congratulations on your purchase Tom. Looking forward to seeing what you will do with it in the coming videos. Just remember it's a grinder and not a mill, joke ha ha (common mistakes my students make, as they try to take a 1mm DOC). Cheers, Aaron.
I got a shock at how sensitive the dial was. On the first cut I actually misread the dial it has a vernier scale and I wasn't sure if the division scale was referring to the main marks or the smaller marks lol. Instead of 0.02 mm I took a 0.2 mm cut initially!
I'm going to have fun with this though
@@TomMakeHere Yes the same thing happened with my students on our little Repco Surface Grinder. We should collaborate sometime. Where are you based mate? I'm in Melbourne Victoria ;-)
@@TomMakeHere Just sent you an email
Sounds good, I'm down in Tas
Great new option you got yourself there.
If i have one piece of advice, don't trust your mag chuck,it ain't no mill vice! Be especially careful with small things, a, because the don't hold well and b, because they are hard to find when they have shot across the shop.😢
Congrats! Chatter may indicate the wheel is not on the adapter tight enough.
Cheers Yuchol
I'll check that. There is a whole bunch of reasons in my head, traverse speed, wheel balance still off, the spindle bearings do sound loose when starting up and might need tightening or replacing (hopefully not). We'll see
G’day Tommy, new toy awesome. I thought it may have fallen over coming off the trailer.
Cheers
Peter
Nah just a superficial dent on the dust extractor. That thing is unstable even when lifted by the proper handles. Terrible design
Thanks for watching
usually the grinding disk is mounted to a seperate piece that has a taper that centers it to the machine
with this option if you need to change the grindstone you dont need to redress it as its allready centered from the last time , they sumtimes have a way of balancing the stone without drilling holes too (two offcenter rings you can move around before tightening ) , might want to check that , think you got the tools to make more of tose grindstone holders if the machine has that addon
It looks like you are right!
Cheers I'll look into that and do a follow up video
Have a look into boot lace ferrules for your wires. It will ensure that you have a good connection and sort out any stray wires. Not using the switch gear in the machine was the right call as vfds don't like to be switched on the output side.
Cheers, I'll look into those
I'm thinking of wiring the spindle to connect through the machine's main switch (agree, only switched with VFD off) and that way I can adapt the dust extractor with a separate duct for welding and grinding elsewhere in my shop. That will be an upcoming project
Mate great work. I’ve just got a mill with a 5hp motor and a coolant pump motor both 3 phase, will a vfd run both ok?
That's getting pretty big. You probably could run it off a vfd so long as the vfd is rated more than everything you want to run, but you cannot switch the coolant pump / mill off while the vfd is running as they don't like any power fluctuations.
But I would probably be more tempted to use a rotary phase converter, especially with that size of motor. Despite costing more upfront, they are very solid and reliable, and you can always plug in a different machine if you get more 3 phase tools
I worry that the power will fluctuate one day and blow up my vfd
Dude, you want to get a pallet jack and some thick wooden boards, much easier to get stuff off a trailer!
Maybe, a large forklift put it really far onto the trailer so reach is an issue
I've not seen one with the reach or height (not to say it doesn't exist)
Awesome Tommy, Cant wait to see what shenanigans you get up to with it. maybe you can "Finish" your puns better now :P
Let's hope it doesn't become part of the daily grind
Ooh snap!
I like the way you cut that thread in both directions. But " roundment" thats going a bit too far
You're talking about the balance arbor? It was a left hand thread so only cut away from the chuck
Not sure what you mean by roundment?
TommyGun Machining sorry,my mistake.I have just rewatched vid. You said roundness. Not what i said.
Congrats! About moving. Looked very dangerous! Maybe you should first unload the grinder from the trailer to the ground? Then pull into the shed on pipes? 800 kg is rolled easy by hands (crowbar), of cause on a flat floor.
Every step was a controlled move (although unconventional!)
I agree that would be a better option, but I had no means of lowering it even outside. There is only crushed rock outside my shed and a 200 step up into my shed.
I plan on adding concrete outside and eventually building a gantry setup to solve problems like this
@@TomMakeHere ah, got it. OK good luck!
О знакомые все люди, и мне ролик в рекомендованные попал. Ещеб на этом инглише хоть что-то понимать бы...
@@user-ec7kq9hy9l привет, я этот австралийский английский тоже плохо понимаю, да он еще прикалывается всяко :)
Congrats Tom, this purchase is great news. Opens up a lot of options for the shop and the channel. Do you have any recommendations about buying a surface plate, did you purchase your plate locally or import? All the best.
I bought mine from Hare and Forbes during a sale earlier in the year it's got a 600×600 work surface which is heaps for the work I do.
The maximum surface deviation is 3 microns which is fine for work I would typically do. Although now I can potentially work to even tighter tolerances, so we'll see how we go with it
I could have gone with a smaller cast iron one, but I got this one with the intention of setting up a more permanent workstation (I'd recommend this so it doesn't attract clutter). Also this size lets me scrape my mill's table which needs to happen
@@TomMakeHere thanks mate, always helpful to hear a different perspectives. I too think 600mm is a good size.
tommy; did you know that ONLY you know how to turn between centers? i was starting to think i was hallusenating doing it in the past! poppy says HI
It's a handy technique!
Thanks for watching Poppy
I'm curious to know how you got 415V out of the VFD with only 240V in. Typically, VFDs can't step up the voltage.
VFDs are black magic to me.
I thought a lot of people used them this way to run their 3 phase machines at home?
@@TomMakeHere You are probably not getting 415V out, only 240V. Since the speed of an AC motor is determined by the VFD output FREQUENCY, a 415V motor will run on 240V but will only produce about 60% of its rated power at rated speed. You can only get the rated power out of the motor at this lower voltage by providing more than its rated current. This will overheat the motor (and eventually burn it out).
Hopefully, the VFD display can be set up to show the output voltage, to allow you to check this.
Отличный станочек!
Спасибо! Я надеюсь, что Google Translate работает правильно!
Правильно :)
Any more info on the VFD? I have the same issue, I have a 240v VFD and 415v lathe I want to hook up.
You just need to make sure that the output is definitely 415v 3 phase. The VFD also needs to meet or exceed the HP requirements.
Otherwise it should be pretty straightforward if you or someone you know can wire it
@@TomMakeHere do you have a link to the VFD you used? I wouldn't mind getting some specs to match up.
Ahhh cool!
Going to be fun!
I would love to have a subscribe grinder...
Better hit that button then :)
Next time, if you’re close, let air out of the trailer tires.
Great tip cheers!
Tom, Please accept this advice as if I were a family member trying to help you; not a TH-camr throwing criticism at your hard work. I admire any young person who has the guts to work hard and learn, but you're making so many critical mistakes that could cost you your life or a limb! I was fortunate enough to learn those lessons from submarine service through the shipyard as a plank-owner and onward on patrol. Slow down. Learn attention to detail. Even when you're working with limited equipment you can conceive methods of handling loads with a minimum of basic leverage devices that you can adapt and use over and over again, but it takes more time than you allow yourself. You have to stop, think and apply your basic understanding of science to solve problems. Take the time to read a few old machinist manuals from the 30s and 40s and you'll be surprised how many new techniques you'll arrive at toward being a better mechanic. Keep up the good work and be safe!
100 percent agree with you. It might have looked rushed but I spent a week leading up to the move planning, and the move took a whole day as each step was assessed (the coolant tank that rolled over was the only thing that wasn't assessed, that was just so I could clean it without stinking out the workshop)
I've since built a gantry to make machine moves easier
Subscribe grinder??
Surface grinder
Just a little subliminal message :)

Solid Rock Machine Shop Inc.
Go watch his video with Keith Rucker vintage machine you can ask him for help
Thats why i sent him to a master where he can get good help
@C.M.W. no Steven bartten is a master machinest that does the best grinding i have ever seen. And he is ready nice guy so i know he will help. He just did a video with keith Rucker of vintage machine. Org.
Where he help him set up his grinder. Get the right wheels and grinder in the chuck. All the right way. This young man is trying hes not intending to harm any one he just dont know. So send him in the right detection. I think he will do fine
Your wasting time not balancing the wheel on the wheel adapter. Has to be mounted to the adapter, installed on the machine and dressed true. Then remove it from the spindle as a unit, wheel still on the adapter, and then balance it. I balance 10-14-20 wheels. For the most part not necessary with the small 7” wheels that uses.
Good job getting it cleaned up, grinders all always the worst!
Yeah I've just sorted properly balancing. It made a huge difference to surface finish. I'm now starting to get 'commercial' looking ground finishes which is exciting. Next step is to actually grind the chuck