Kurt Vise Sloppy movable jaw, but up and down?

Strouty · Aug 21, 2018

I am a newbie to kurt vises, seems to me that there should not be a lot of movement, but I am not sure. When I bought it, there were two of them and I am not sure I really checked this one over, I gave the other to my father, so I don't have quick access to it to see if it is similar. I did not measure it, but seemed like I could lift the movable jaw up about 1/2", is there adjustments, is this normal, am I screwed? I will try and get pictures tomorrow.

larry_g · Aug 21, 2018

They are adjustable and rebuildable. Go to the Kurt site and you will find the procedure. Pay attention to how to adjust the setscrew, If I remember right it is tighten and then back off some. (On edit, reading the manuals a bit the backing off of the setscrew depends which model vise you have.)

https://www.kurtworkholding.com/vise-trouble-shooting-guides

lg
no neat sig line

matt_i · Aug 21, 2018

I think its normal. There's a 45 degree angle surface so the forward pressure of the screw causes a force perpendicular to that plane. Resolving the vector into two equals means equal downforce on the moving jaw as forward pressure on the screw.

That's why the Kurt is a big improvement over say a Palmgren or Bridgeport vise. In those the forward pressure of the screw causes the moving jaw to lift up...

Strouty · Aug 21, 2018

I was wondering if it was, but I couldn't find any info on how much it should move, just seems like a lot. I will get exact model and info when I go to the shop again. My other vise is a palmgren and it doesn't do this at all.

Strouty · Aug 22, 2018

I haven't been to the shop yet, but I will try and get a model and pictures, at least then I can see the manual and know what I have.

Strouty · Aug 23, 2018

Here are the pictures, not as bad as I remembered, but still think she needs a rebuild. The serial number is not really visible, but it is an older D60.

larry_g · Aug 23, 2018

https://www.kurtworkholding.com/documents/online_D40.pdf

Look at the above link. It shows on page 9-10 the procedure. The link above that I posted will get you to the rebuild kits, if needed. I'd suggest that you disassemble, clean, lube and then reassemble to check if all is OK. Then order a kit if needed. There are also new jaws available from Kurt or aftermarket sources.

Your base problem is that the setscrew in the movable jaw is loose, item #12 in the parts list in the link.

lg
no neat sig line

Strouty · Aug 24, 2018

Once I get it apart, I am sure I will find that it is dirty too. I will be ordering the rebuild kit for it, they are like $11.

Kurt Vise Sloppy movable jaw, but up and down?

Strouty

Well-known member

larry_g

Well-known member

matt_i

Well-known member

Strouty

Well-known member

Strouty

Well-known member

Strouty

Well-known member

Attachments

larry_g

Well-known member

Strouty

Well-known member