Vicmar chucks

Re: Vicmar chucks

Geoff Whaling

Jorge, I service & repair Vicmarc chucks for friends but in this instance with international postage both ways it would be almost cheaper to buy a new chuck.

It sounds like the stop pin has either been removed or sheared off. The chucks really aren't that difficult to service - just make sure you lay them out sequentially as you disassemble them. Only requires a few basic tools and a good set of circlip pliers, some kerosene & a bit of grease. I did an article in the AAW Journal 29-3 page 20 on servicing the Vicmarc & Nova chucks.

Re: Vicmar chucks

john Lucas

I can probably repair it as far as cleaning. If it needs parts I don't know if I can get them. the little stop pin is probably a small set screw and I can probably get one of those.

Re: Vicmar chucks

Jorge Castañeda

Thanks Geoff,

I will find your article and give it a try to fix it myself.

Re: Vicmar chucks

Jorge Castañeda

Thanks John,

I will by a new one and try to repair this one. Living in rural Maine is lovely for some things and hellish for things like this.

Parts - Vicmarc service video

Geoff Whaling

John, the stop pin is simply a roll pin so should be pretty easy to source from any engineers or bolt supplies.

I haven't ever had to replace parts in a Vicmarc chuck other than the socket head cap screws that are used to secure the jaws to the backing slides. I have serviced many & I have seen quite a few with damage to the leading edge of the scroll because the stop pin had been removed. Just requires a tidy up with a file & make sure the stop pin is installed correctly so no further damage occurs. Just checked the current catalogue - replacement part numbers for scrolls, pinions, dowel pins & backing jaws are on P43. Only reason I could see for parts is if you lose one :-0 while servicing the chuck.

Jorge, Marco Verrechia from Vicmarc has a video on their Facebook page showing how to service a chuck. https://www.facebook.com/vicmarcmachinery/videos/vb.673550646019359/681810991859991/?type=2&theater

One thing to check Jorge about the jaws coming out- just look to see if the stop pin is actually still there but driven to deep into the chuck body.

Re: Parts - Vicmarc service video

john Lucas

Geoff if the spring pin is driven too far into the body how do you get it out. I've been able to remove the pin using vice grips and light taps with a mallet but have never tried the opposite. Normally when I find those pins installed in a machine there is a hole all the way through and you just drive them through and reinstall them later.

Re: Parts - Vicmarc service video

Geoff Whaling

John, On all the Vicmarc chucks I have seen the hole goes through the main body so you are able to drive the roll pin from either side with a suitable size pin punch. It is easy to access from either side on the VM90 but you have to take the back off on VM120's etc.

I have seen the roll pins sheared off, but I really don't know how someone can manage that.

Re: Vicmar chucks

Alan Hollar

The VM 90 and the VM 100 should use the same jaws. Screw size and spacing are different for the VM 120 as the base jaws are larger.

Thanks Alan!

Re: Parts - Vicmarc service video

Jorge Castañeda

Geoff,

Thank you so much! Great info. It is a VM 100, not a 90 as I thought, and has a cover on the back. Under the #4 slider there is a miniature hex set screw, perhaps a 1.75mm that I have not the Allen wrench for, so tomorrow a trip to a big city to find it, and get the circlip pliers as well. And probably the set screw.

It will look great when I get all the lacquer off it, from the days when I used to use Krylon in spray cans...

Thanks again for guiding me on this adventure...

Re: Parts - Vicmarc service video

Jorge Castañeda

Looking it again and again, it may be the roll pin sunk down and not a set screw.

pin out

Jorge Castañeda

Got the roll pin out, and it is sheared off, but not from the top, seems to me that it did slide down into the rack

Re: pin out

Doug Ladendorf

Jorge, you may be able to get a roll pin at the local hardware store, but if you have trouble finding one I have some different sizes. If you provide dimensions I will send if I have something that will work.

Doug

Re: pin out

Jorge Castañeda

Doug,

It is a 3mm x 10mm, the local hardware may not have it but in a bigger town it will be easy.

Thank you very much for your offer.

Re: pin out

john Lucas

I need to go to Cookeville tomorrow evening. If I can talk the wife into going early I can stop by Fastenall and see if they have one. I also have a selection of roll pins but I'm pretty sure they are all fractional and not metric.

Re: pin out

Jorge Castañeda

Thank you John,

in Bangor ME there is a store that carries all kinds of industrial supplies and they carry lots of metric stuff, I am confident they'll have it. Canada is just a couple hours away...eh!

The wind and the heavy rain are dwindling and the forecast is sunny for tomorrow, so I will go, there are a number of errands to be done besides the chuck.

Re: pin out

Jorge Castañeda

The closest i found is 1/8" slightly ovesized, but I will spin it and sand away

a few thou's

Re: pin out

john Lucas

just remember they come slightly oversize. They are often called spring pins because they compress when you drive them in.

Re: pin out

Jorge Castañeda

I know, but it needs to be able to start going in. As is it will not.

Back in servivce!

Jorge Castañeda

Thank you guys