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Nova chuck jaws screws stuck

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Forum topic by KCOlsen posted 09-21-2021 04:59 PM 415 views 0 times favorited 13 replies Add to Favorites Watch
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KCOlsen

31 posts in 392 days


09-21-2021 04:59 PM

Topic tags/keywords: question

I have a Nova chuck and I cant release the jaw screws 2 are locked in this happened before and I had to fr I ll them out and use an easy out. Replacement screws are hard to find would spraying the hscrew hole with wd40 work ir would this atrack dust and cause problems any suggestion thanks in advancev


13 replies so far

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HokieKen

19407 posts in 2385 days


#1 posted 09-21-2021 05:03 PM

Not WD-40 but something like PB Blaster or Kroil will probably do the job. I’d get some never-seize to put on them before the next jaw installation.

-- I collect hobbies. There is no sense in limiting yourself (Don W) - - - - - - - - Kenny in SW VA

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TheDane

6012 posts in 4910 days


#2 posted 09-21-2021 05:08 PM

WD-40 is not really a lubricant … it is more of a solvent and any lubricating properties do not last.

FWIW, I have been using Nova chucks for 10+ years and never saw any need to lubricate them.

You can order replacement screws direct from Teknatool … https://www.teknatool.com/products/chuck-accessories/quick-change-chuck-accessories/nova-spare-screws-jaws/

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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HokieKen

19407 posts in 2385 days


#3 posted 09-21-2021 05:39 PM

I may have misunderstood… My original reply was assuming you wanted to spray something in the holes to be able to get the screws out. That’s why I recommend penetrating oil. If you were talking about for lubrication with new screws, never-seize, paraffin wax or light machine oil are all things I use successfully.

-- I collect hobbies. There is no sense in limiting yourself (Don W) - - - - - - - - Kenny in SW VA

View TechTeacher04's profile

TechTeacher04

476 posts in 2779 days


#4 posted 09-22-2021 12:08 AM

Use a dry lube with Teflon, I have had good luck with the WD40 Specialist dry lube spray on my planer and table saw.

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hairy

3321 posts in 4779 days


#5 posted 09-22-2021 12:17 AM

Get an allen wrench bit to fit the screw. Put the bit in the screw, hit it with a hammer. The shock usually will break it loose.

Every time I change jaws, I put 1 drop of 3 in 1 oil on the screw threads. Any light oil will work.

You’re probably over tightening the screws when you install.

-- there's someone in my head but it's not me...

View HokieKen's profile

HokieKen

19407 posts in 2385 days


#6 posted 09-22-2021 12:20 AM

Yeah something is amiss if your screws keep getting locked up. Maybe just in a very corrosive environment? I have 3 Nova chucks and have never had a screw get stuck.

-- I collect hobbies. There is no sense in limiting yourself (Don W) - - - - - - - - Kenny in SW VA

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Nubsnstubs

1803 posts in 2977 days


#7 posted 09-22-2021 01:58 AM

Finding screws is not an issue. Go to an Ace Hardware of equivalent, and get some metric screws for the threads you need. The heads will be oversized, but since the jaws are out of your chuck, the slides will screw down to a 3/16 inch square. Put a screw in with the head out from the chuck. Use a carbide tool and you should be able to make them fit the hole in the jaws. Your cost will be about 2 dollars for the screws and maybe 15 minutes on the lathe…........ Jerry (in Tucson)

-- Jerry (in Tucson) www.woodturnerstools.com

View Chip201's profile

Chip201

11 posts in 35 days


#8 posted 09-22-2021 03:19 AM

Had a problem with white lithium grease causing bandsaw tilt gears to seize. This was because I did all my tilt cuts on another bandsaw. So I called my cousin who built racing engines in past, knowing he must have used WLG in the past. As we talked he started laughing-“you woodworkers avoid heat, we relied on heat. Get a hair dryer or heat gun and warm it up and soften it before forcing anything that might just have dried out from sawdust.’

View Redoak49's profile

Redoak49

5395 posts in 3236 days


#9 posted 09-22-2021 11:15 AM

My old Nova screws were hex but the new ones are Star Drive and are much better.

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Davevand

289 posts in 2083 days


#10 posted 09-22-2021 03:46 PM


Finding screws is not an issue. Go to an Ace Hardware of equivalent, and get some metric screws for the threads you need. The heads will be oversized, but since the jaws are out of your chuck, the slides will screw down to a 3/16 inch square. Put a screw in with the head out from the chuck. Use a carbide tool and you should be able to make them fit the hole in the jaws. Your cost will be about 2 dollars for the screws and maybe 15 minutes on the lathe…........ Jerry (in Tucson)

- Nubsnstubs


This is what I did, but used my drill and a metal file to bring the head down to fit. BTW the screws are M6.
Also go buy a good quality Hex key.
Use a dry lube for the screws if needed and I blow mine out with compressed air after I use it to get all the dust out of it.
Use a dry lube if needed, I also blow my chucks out with compressed air after I use them to clean out all the fine dust.

View northwoodsman's profile

northwoodsman

674 posts in 4993 days


#11 posted 09-22-2021 04:15 PM

I’m glad that you could all figure out what the original post said and what he was asking. Those screws do lock in pretty tight and I found that a high quality T-handle wrench is a must. I thought that he was saying that two of the jaws were stuck and not moving. In the future please try to use spell check or re-read your post before you hit submit. It will be appreciated by all. Thank you.

-- NorthWoodsMan

View OSU55's profile

OSU55

2832 posts in 3236 days


#12 posted 09-23-2021 06:49 PM

Heat and/or penetrating oil to get the stuck ones out. I lube mine with paste wax – no dust attracted. You are torquing the screws excessively. Just snug, not tight. Same for any chuck not just Nova. I’ve left screws loose before and they didnt come out, it doesnt take much to hold them.

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KCOlsen

31 posts in 392 days


#13 posted 09-27-2021 03:43 PM

thanks for all the replies i like the past wax idea ps sorry about the original post did it on my phone while traveling

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