Buck 4862 6-jaw chuck reassembly/cleanup

[FliesLikeABrick]

At an auction this past week I picked up a bunch of stuff from a local machine shop auction once I knew I was making the drive up. One lot was a "6-jaw chuck" with no other details available. This came home with me for about $35-40 after all fees



This ended up being probably the best value/item I got at this auction, the 6-jaw chuck turned out to be a Buck 4862 8.5" -- a pretty good fit for my Colchester Chipmaster once I get a backplate for it.

Unloaded everything from the truck on a few pallets



The chuck plus the backplate it was on probably weighed at least 80-100 lbs, the backplate is a monster


4862




Cracked this open and was met with a few things
- The HORRIBLE stench of anaerobic rancid oil/grease
- A surprisingly high amount of small chips made it inside the chuck





I threw the jaws in the ultrasonic cleaner and they cleaned up quite nicely. After the picture below I ended up using a scotch brite wheel on a die grinder to polish some of the staining off. No signs of damage/wear on the jaws




Cleaned up the rest of the parts in the parts washer, then ultrasonic, then back to the parts washer to knock any remaining softened stuff off. Blew off with blow nozzle, wiped the outside surfaces of the parts down with paste wax to prevent flash rusting




The scroll and gear teeth all look really good









And the main housing cleaned up nice



I opted to not deliberate the "oil versus grease" situation too much. I used Yamalube moly grease on the gear and scroll. On the running ways of the jaws I used way oil.

Reassembled and feels quite good. Looking forward to getting this mounted and trued up, and seeing if it provides the repeatability I hope it can bring to the shop


Overall spent maybe 2 hours on this, it went pretty quickly. The most difficult part was the pinion being a bit stubborn to come out until cleaning some grease/chips out of its cavity; and the 4 fasteners for the register adjustment had a bit of impacts around the top of them that made them difficult to remove. I ended up just forcing them out instead of taking a die grinder to cut back the outermost damage thread, which ended up being a reasonable decision.

Thanks for reading

 

[wachuko]

That came out great!

 

[mmcmdl]

I'm glad I missed out on this auction . What shop was it ?

 

[FliesLikeABrick]

I'm glad I missed out on this auction . What shop was it ?

Link Gear. Not a ton of great deals to be had on the smaller lots, but this chuck was one of the better ones from what I was watching and bidding on

Maynards Industries USA LLC | Link Gear & Machine Company lots

Bid Live at Maynards Industries USA LLC's Link Gear & Machine Company auction

www.bidspotter.com

 

[akjeff]

I've got the 6" version, very nice chucks. If you need any parts/service, I've found these folks to be top notch. My chuck was horribly bell mouthed when I bought it. Sent it in to KMC and it came back looking and working like new, for a pretty reasonable fee. They have backplates as well.

KCM offers US Made Chucks from our Michigan factory

KCM is your American source for standard and custom workholding equipment. We make and service heritage Buck Chuck designs. We offer engineering support for your technical questions and customer service from our Michigan factory.

www.kzoochuck.com

 

[mmcmdl]

Lot #41 . My first day in any shop as an apprentice , a journeyman set up a key seating machine for me . The broach was too small . The arm came over the top of the broach and snapped off . It had been welded before so it wasn't a big issue , but I had to change my undies afterwards .

 

[Beckerkumm]

Those old Buck chucks are very well built. I have several similar and put them equal to Bison. The newer ones are a small step down but still good. the downside is the single gear and the need for separate inside jaws but life isn't perfect. Nice job. Dave

 

[Cadillac]

I’d like to find the drawer with all the internal jaws. I have a 5” buck 6jaw with only outside jaws. Would love to find internal jaws.
Really chews me up when you see a pile of chucks at an auction some internal some external and some completely missing jaws. Then you see a listing for a drawer full of EXTRA chuck jaws. Never knew they supplied EXTRA Jaws when purchased. Which all end up at the scrapper probably

 

[woodchucker]

so in your shots of the internal b4, you have lots of fine chips.. With oil they get flung out to the outside, with grease, they will stay in the mechanism and become the grit that eats the guts. Just my opinion.. I know, you went with moly, it will make a nice paste like a valve grinding compound.

 

[FliesLikeABrick]

so in your shots of the internal b4, you have lots of fine chips.. With oil they get flung out to the outside, with grease, they will stay in the mechanism and become the grit that eats the guts. Just my opinion.. I know, you went with moly, it will make a nice paste like a valve grinding compound.

When you say "outside" you just mean to the outside perimeter of the cavity inside the chuck? Or do you mean that they actually would exit the chuck somehow?