Prentiss Vise Resto

[oldldh]

Calling Reverend Scott---

Calling Reverend Scott---

Kevin can fix you up...

www.wiltonviseparts.net

www.benchvisejaws.com

Both sites will get you to Kevin...email him with your requirements...

 

[drivesitfar]

JJ: i'm guessing once you remove the sleeve then the screw will come out without pulling out the dynamic jaw. can you post more pictures of your Prentiss because at GJ we always like a lot of pictures and especially of 100 year old vises?

also i see you are a new member. there is a thread called Vise Repair 101 that the link is in my signature where you might be able to find a lot of information on about your vise or vises in general.

Welcome to our forum and if you want a good read about vises check out the 1000 or so pages of the Vises of Garage Journal.

 

[larry4406]

I also used a locking set screw collar on my Prentiss 51. I chose to also use oil-lubed thrust washers.

Parts were from McMaster Carr:
9414T15 Set Screw Shaft Collar, for 3/4" Diameter, Black-Oxide Steel
3750K18 Ultra-Tough Oil-Lube Bronze Thrust Bearing, for 3/4" Shaft Diameter, 1-1/4" OD, 1/8" Thick

Edit:
My vise was missing the original collar nut. The shaft clearly was groved to receive the staked fingers of the original crown type nut. I used a file/dremel tool to knock down the burrs from the original staking so that the washers and collar would slide past. The parts were lubed with grease and the set screw locked with a total of about 0.015" slop.

 

[drivesitfar]

Larry: did you have a crown nut on your Prentiss or the sleeve you are showing in the picture? it looks like you might have had some cuts in the screw to help hold the sleeve in place. yes? did you file them down by hand or did you get a dremel or some other power tool in there to do that?

JJ: check the diameter of the new sleeve with your old crown nut and maybe take it to the hardware store with you.

 

[Tritonus]

Not a Bull Dog but a Number #20 Prentiss. 4.5" Jaws, swivel base and swivel jaw. Similar yet different.

I too used the set screw shaft.

Bought parts from Kevin at benchvisejaws

 

[Tritonus]

That's an awesome vise! What happened to the "N" in New York?

It is right here. Can't you see it?

 

[Tritonus]

That's an awesome vise! What happened to the "N" in New York? I just finished painting mine. Pics soon...

I double checked the parts mentioned above and had to email McMaster and change the order to these part numbers.

3750K24 Thrust bearings 7/8" id 1 5/8" od

6436K37 Two Piece Clamp-On Shaft Collar 7/8" id 1 5/8" od

I opted for the two piece because i wasn't sure how easy it would be to slip the collar down the screw drive and into position because of where someone welded the original collar. Also went with a 318 SS so it will come apart after another 70 years.

In my #20. I don't believe I have OD 1 5/8" space available.
I opted for the OD 1 1/2" , even then it is a tight fit.

Also, the ID 7/8" maybe correct for the lead thread, on mine, no shaft or thrust bearing will fit. A ID 15/16 is a better fit.

Part number
3750K26 - Thrust bearing 1" Shaft bearing, 1 1/2" OD 1/8" thick
3750K25 - same as above except 1/16" thick

9414T18 - Set Screw Shaft Collar for 15/16" ID Black Oxide. Not many options in 15/16" ID

 

[larry4406]

I get some resistance when turning the handle in the same spot. Is there any way to guarantee a smooth operation of the jaws? Mostly with turning the shaft? How "tight" must the collar be against the back of the jaw? If that makes sense. Should I leave some play?

I adjusted the collar on mine so that I had a total of about 0.015" total slop.

 

[Tritonus]

I used gravity + one hand to push the collar down as far it can go. Use the other hand to tighten. A bearing on each side. And it was super smooth. One finger turn. Just perfect.

Then thursday wanted dimensions. Everything came off including the grease so I could measure.

I might do some more modifications, like file down high spots so the dynamic jaws moves easier. To me, it is a fun project.