Making a Replacement Excavator Bucket Pivot Tube - Machining - Large Piece Work

This job is to make a new pivot tube for a Hydraulic Excavator. The customer is changing out bucket setups and needed to change the jib end pivot tube to accommodate the larger pin and bushings. Watch as I take this big chunk of steel and precision machine it to the customers specs.
Topper Machine LLC is an entirely manual machine shop located in Spooner, WI. Our videos will highlight some of our shop work as well as the sawmill we built in the shop and our A.D. Baker steam engine, and others we work on.
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[@keith0alan]

Seeing the ring on your finger reminded of an old machine shop joke. The foreman calls the machinist's wife with horrible news. "Your husband caught his ring in a machine and ripped his finger off." The wife asks "The whole finger?". The foreman replies "No, the one next to the hole finger." .

[@armstronglaborde]

I do appreciate that you explain every step before you do it; the mark of a true teacher in my estimation.

[@BruceBoschek]

Isaac, Josh and Kurtis all on one Friday. My head is spinning!

[@umichbran]

I'm feeling the same way, Bruce!

[@alanm3438]

Your video came up and so I just had to watch it again!!!!!

[@bobjones9870]

Camerawork looking good Josh. Keep it coming!

[@ElmerJFudd-oi9kj]

Hi Josh, I do like the closeups, on the big screen they almost make me duck to avoid the chips hitting my face. Nice job so far, looking forward to part two. Chris from France.

[@ypaulbrown]

the shot at 23:56 deserves this Josh, best wishes from Orlando, Paul

[@TopperMachineLLC]

Thanks, yes that was an awesome shot!

[@davidschliebe246]

Good inclination. Center drill and live Center. I feel better to.

[@umichbran]

You're already a wiz with the new camera. Love the closeups and the "borecam". See you next week!

[@jamesriordan3494]

Really enjoy your videos, honest, old school methods. The interior shot of the boring was very interesting; thank you for including this.

[@ypaulbrown]

that plate for the tailstock to give pressure to the part you made is a fantastic idea.......Bravo Josh......Paul

[@seantap1415]

You actually want some space between the part and the chuck.

[@ronwilken5219]

Hi Josh, Looks like a "rotating tailstock chuck" should be in your future project bin to help with the setup of round bits like that. Your "centered puck" is a good idea but doesn't really lend itself to cleaning a band for the steady rest. Otherwise an informative video. Thanks.

[@RalfyCustoms]

Happy days Josh, great work both sides of the camera buddy

[@lawrencewillard6370]

OK, home 'shop', 4th try coming up. Never cut gears before, and finding it 'interesting'. Will get there. Emulate you.

[@kenwood8665]

Really enjoyed your video

[@ypaulbrown]

really enjoyed this Josh, Paul from Florida.......

[@tapplyfamily4020]

Glad that you could use the 5MT Spade Drills.

[@TopperMachineLLC]

Worked out great.

[@mfc4591]

......and just like that the crane is very useful.

[@TopperMachineLLC]

I don't know how I survived without it. Lol. Absolutely love it.

[@taterhater2086]

I am getting ready to do the same thing on my excavator. It's only a 8k machine though so mini version on a mini lathe hahah. Good work!

[@jongerber3476]

What a beauty of a lathe. Thanks for the video. Have a good day.

[@richardtaylor7199]

Great job

[@johnsawyer2516]

The inside shots are a good feature for us non machinists. Take care stay safe.

[@edmac8212]

glad i found this channel some great videos

[@rajugeorge7771]

Great job Sir

[@alex4alexn]

love all the shots, great vid

[@thomaschandler8036]

Good job as usual, enjoyed the video. Good camera work

[@AB_Tool]

That shirt is awesome 👌

[@kentuckytrapper780]

Excellent job Josh, great camera work, big time bound..lol. great video, keep'um coming..

[@GardenTractorBoy]

This was great to watch and I enjoyed seeing the process you followed. We have to replace the pivot tube on the end of a very small FEL so this was very useful, thanks

[@homemadetools]

Nice!

[@johncrisman576]

I like the bore cam

[@TopperMachineLLC]

Thanks, I thought it was a fun touch. Sure do love that 4" spindle bore!

[@kimber1958]

NICE WORK,THANKS FOR SHARING

[@seantap1415]

I would have machined this whole operation with just the 4 jaw holding it with no center or steady rest. Also when darling it in the first time, there should always be a gap between the chuck and the part. 4 jaw chucks have incredible holding power. 4 times stronger than a 3 jaw.

[@hobtink]

Like the T-Shirt. LOL

[@TopperMachineLLC]

They are available on my storefrontier. Just go to my about page and click on the merchandise link.

[@glmf]

Nice work! Unfortunately, welding this in is going to really distort this. I would be curious to see after welding ID dimensions.

[@TopperMachineLLC]

I don't think it will. It is very thick yet and should hold just fine. I know that they build them new the same way. But, I have been known to be wrong a time or two. Just ask my wife! Lol

[@thepubliceye]

This is not a high pression part despite all the extra steps taken.

[@TheUncleRuckus]

Good thing you have that hoist, that would've been a bear to try and pick up without one! Great video as always Josh, thanks. 👍👍

[@TopperMachineLLC]

This was nothing. I did a job a few years back, same length but 10" diameter. Nearly killed myself getting it in the chuck. Man, I sure do love that hoist.

[@bostedtap8399]

Your customer could have let you at least 1/2" (13mm) of chucking allowance, though there's many other ways to get the job done. ✔ Photography looking brilliant. Autostop feature works great, nice job and thanks for sharing.

[@wmweekendwarrior1166]

Good stuff

[@grahamheath3799]

Good video ; nice little job!!

[@mattymcsplatty5440]

Have u considered making a "half" dead centre so u can face all the way up to the centre while the half centre is in? Love yr channel mate

[@alanm3438]

You did a nice job on both the project and the video. It is too bad that you did not have very much material for cleaning the sides and the ends. I can see how handy the crane is when you have heavy material. You are interesting to watch. I did make something. I made a 6' screen to filter out the large rocks. It works great but the weeds plug it up. I sure wish that I could have made the frame out of steel. The screen is a 2" cyclone fence that I got from the recycle center. Looking forward to seeing your next video. 😃😃😃😃😃😃😃😃😃😃😎😎😎😎

[@isbcornbinder]

That is good video.

[@frankish5314]

Oh man.. I would have throw a piece of plywood under that sketchy workpiece. Yeah would have made me nervous too..:)

[@greglaroche1753]

Great video. Thanks. I was wondering, does that spade drill cut with only one insert and how fast was the lathe turning? It was sure making some nice chips.

[@garychaplin9861]

What material was supplied for the boss and the bushes and what sort of interference fit are you planning? When I worked on excavators we set the bushes for very tight press fit and made allowance for crush of the bush. If the operator was lazy with the grease gun the pin will seize and spin the bush, then it's game over.

[@TopperMachineLLC]

The material for the tube was 7" 1018 hot rolled and the bushing was 1020 DOM tubing. I really advised against the choice of bushing, but again, the customer is right and writing the check.

[@garychaplin9861]

@@TopperMachineLLC Hi Josh, I can't see either lasting for long, especially the bushes. I think it likely that the bush will quickly deform.

[@TopperMachineLLC]

@@garychaplin9861 I agree. The customer supplied the material against my recommendation. It's on him if it doesn't hold up.

[@garychaplin9861]

@@TopperMachineLLC Josh, you should make a video of you with an "I told you so" expression when the customer brings the job back to have it re done in appropriate material. But then, he would probably be too embarrassed, especially if it fails at low hours.

[@kkoch666]

Guy should have just bought the Cat bushings.

[@71Giggles]

Why’d you change over to the three haw chuck ?

[@BrucePierson]

When something is nicely round, the three jaw chuck is a lot quicker to set up. With rough stuff, you use the four jaw chuck to get it centred, because you can adjust it to suit.

[@alansawyer1219]

You can trust your four jaw chuck when facing. The clamping force is so much higher than your three jaw chuck. This is one reason I use my four jaw chuck more times than I use the three jaw on big lathes. Regards Alan

[@dermotkelly2971]

Good work . Did the component have to be concentric?

[@mikestevens8046]

Go upside down and in reverse from the backside to get rid of the chatter?

[@ValiRossi]

Nice work. How's the new lathe workin out?

[@TopperMachineLLC]

Absolutely love it. Regret not buying it a few years ago.

[@jeffreyschmiedeck4254]

You can only stick your boring bar out 3x its diameter.

[@BillyTpower]

I like those gun drlls, does your buddy have more for sale?

[@zacdrilling4554]

When the customer welds that part in won’t that Thani put a lot of force around the bushings thus making the pin go in a lot tighter also

[@vadimjcb3cxmurmansk]

👍👏

[@johnlee8231]

Just need to upsell that 1/4 inch of bore as your making sure the bushing starts straight. Its a feature

[@armstronglaborde]

Do you do all the machining yourself or do you have others to help you?

[@TopperMachineLLC]

All alone. I have an apprentice who is learning, but I mostly do it alone. Including the filming.

[@armstronglaborde]

@@TopperMachineLLC great work and an efficient one man team

[@jheissjr]

One question, why was the boring bar angled down 23:38?

[@CothranMike]

Since no one answered I'll try. It could be for negative rake, breaking chips even better with the high pressure angle, if there are other reasons they escape me at present. hth

[@maplemanz]

What kind of material is the parts made of? 4130 1144?

[@deepwinter77]

69 thousandths Nice!

[@therealspixycat]

So Curtis doesn't have a crane that electricly moves from left to right!

[@tubewaldo]

Does this tailstock have MT-5 Taper?

[@oldschool1993]

Your steady rest rollers are wide open for chips to get stuck in. A cardboard shield is easy to make.

[@vadimjcb3cxmurmansk]

12 минута. Что это за сверло??? Как называется?? Напиши точное название. Спасибо

[@rmsflorida]

I just caught this vlog...A 3 jaw is for Hex Stock...Get into a habit on using a 4 jaw. Set up the steady rest BEFORE you switch chucks....Why ? "Well, to each his own" Cut a piece of card board over the diameter of the work, in front of the "steady to deflect any metal swarf getting between the "steady" rollers and scoring the work. Slow the machine down...Sharp tip on the boring bar to work that "Chatter" out A vernier caliper is OK for a quick measuring...Oh ...your using a mic ...never mind... You might want to wear that Wedding Ring on a chain around you neck under you tee shirt. your Bride won't mind.... Like some features of that lathe. ......................Robbie

[@hobtink]

Yeah, you only get to remove the right amount once and too much amount nunce

[@susannovotney1903]

where is your half dead center for facing with a enter???

[@tallswede80]

spooner is out the middle of nowhere. how do you get any work?

[@tapplyfamily4020]

A good machinist is needed everywhere.

[@tallswede80]

@@tapplyfamily4020 but there are machinists in Minneapolis who are much better equipped and have cheap migrant labor

[@jeffreyschmiedeck4254]

Telescoping gage not an inside micrometer .

[@CothranMike]

Either works fine, it's in the touch of the machinist and the clearance for fingers in the one case, idiot proof and such for the telescoping gages since you are using the easy read mic barrel. Depth mics are a pain unless your brain works that way. Inside mics are fine to read, with a loop for me at my age.

[@BrucePierson]

You sure get some unusual and interesting work in. But when something needs to be modified, the only way is to make the parts, as you just can't buy them.

[@joell439]

👍👍😎👍👍

[@markellis6886]

what is the retail price of gantry crane ?

[@johnlawson4829]

E r College forty N t two what is the threads inside

[@vadimjcb3cxmurmansk]

Привет. Включи бегущую строку под видео на русском языке. Не понятно что ты говоришь. Спасибо

[@wallbawden5511]

I Don't know why you would start with a 4 jaw then go to a 3 jaw and then talk about concentricity ??? it's cold roil steal with mill scale grind mil scale off and nil to non jumping of the indicator don't know what your trying to do here bit confusing with the 3 and 4 jaw chucks

[@TopperMachineLLC]

It was hot rolled.

[@tiredoldmechanic1791]

The raw material isn't always round so it might not grip firmly in a 3 jaw chuck but a 4 jaw can grip it firmly because each jaw moves independently. On that large of a piece, you don't want to risk it coming loose in the chuck. Once the outer diameter is turned round on one end, the three jaw will hold it well and it makes it easier to switch ends to finish the machining processes.

[@yeates26]

Knowing nothing about machining, can you or anyone explain why you jump back and forth from a 3 jaw to 4 jaw? Why not one jaw for the entire job?

[@jpsimon206]

I'm not one to be snotty about jargon, but is that accurately called a spade drill? I've always thought of those as insert drills. What I'm used to calling Spade drills, is typically an arbor with a slot with interchangeable flat blades of varying length. Ends up looking like woodworking Spade bits but the Spade is interchangeable. I don't know if you watch James Kilroy, but he demos them often, I believe he uses them strictly on the lathe, no twist drills. I know a handful of job shops near me that have a no twist drills rule. My understanding is it is economy based, take too long to re-sharpen compared to the very fast flat blades. I believe you can also order replacement blades, but they are usually an inch deep, allowing for a lifetime of re-sharpening.

[@matthewmeuleman9872]

thay are a little boreing ha ha ha

[@daleolson3506]

Music👎👎👎👎👎💩💩

[@wallbawden5511]

bugger was starting to give you some credit for you way of doing things then i notice you are wherrying rings on ya hands this is a big safety issue for me seen it up close where a mate lost not the one but hole hand just because of the ring i am gone best for you future but i will not watch show with big safety issues

[@TopperMachineLLC]

So long. Good bye. Good riddance. Safety is about being aware of your surroundings at all times. Stupid shit happens. It's all calculated risks. Take your man bun and sandals and go watch gamers.

[@larrykeenan598]

@@TopperMachineLLC Wall Bawden has his safe space set up with his binky and all the other crap he needs. The only ring he wears is the one in his nose.

[@wallbawden5511]

@@larrykeenan598 right hand

[@larrykeenan598]

@@wallbawden5511. My bad, nose and right hand. Thanks for correcting me.

[@BrucePierson]

@@TopperMachineLLC Yep, you have to be aware of the risks when using any type of machine and even hand tools. Taking care and paying close attention to what you are doing is the key. I use a lot of gear that could inflict serious injuries if mishandled, so I always make sure I work safely. I'm sure you do the same.