Delta Milwaukee "Toolmaker" v-belt pulley sizes?

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WO2P
Posts: 8
Joined: Wed Nov 20, 2019 7:17 am

Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by WO2P » Wed Nov 20, 2019 8:16 am

New member, first post. I am in the process of rebuilding a Delta Milwaukee "Toolmaker Surface Grinder" that I bought literally in boxes. It is missing a lot of the smaller parts that I am fabricating. My question for the group is ((what are the sizes of the motor and spindle drive pulleys))? The motor is 1750RPM and I believe the model is a 1024? Any help would be greatly appreciated, thanks in advance... Fred

earlgo
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Location: NE Ohio

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by earlgo » Wed Nov 20, 2019 10:21 am

WO2P There are 2 models of Tool Maker Grinders. The older unit is the 24-105 and has a cast iron base. The newer model is the 24-150 or 24-151 and has a sheet metal cabinet.
Which do you have? I can help with the pulleys for the older model by measuring what is on my machine. I can't help with the later model.
Delta 24-105.jpg
Delta 24-105
--earlgo
Before you do anything, you must do something else first. - Washington's principle.

WO2P
Posts: 8
Joined: Wed Nov 20, 2019 7:17 am

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by WO2P » Mon Nov 25, 2019 7:42 am

Thank You for the quick reply. Per your note my model would be a 24-105. The base is at least 1/4" solid cast iron. At this point I am looking for the larger V-belt Pulley for the motor. I believe the part number is SCG-80-S. The motor has a 1/2" drive shaft. I have located and purchased the smaller pulley for the grinder spindle (it is being shipped as I write this note). I would be very grateful for the measurements on the larger pulley. Also do you use one speed more than the other? If I can't find the original pulley right now I want to install one and get it up and running.
Thanks in advance for all your help.

earlgo
Posts: 1514
Joined: Sat Jan 29, 2011 11:38 am
Location: NE Ohio

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by earlgo » Mon Nov 25, 2019 11:13 am

WO2P: With my freezing fingers and best eyeball, the PITCH diameters of the spindle pulley are 2-3/8 and 2 inches. The PITCH diameters of the motor pulley are 5-1/8 and 4-3/4 inches. This means the ratios are 2.56:1 and 2:1.
The users manual says that for a 60 cycle motor the speeds are 3200 and 4200. This does not calculate exactly, but who knows what rounding error there is.
The belt pitch length should be exactly the same length for each pulley pair.
Machinery's handbook has the formula for belt length: L= 2C + 1.57(D+d) + ((D-d)^2/4C)
Where: C= center to center distance
D= pitch diameter of larger pulley
d = pitch diameter of smaller pulley
(I failed to measure the center to center distance when I measured the pulleys and it is too cold to go out and take it apart again. Sorry.)
I bought a user's manual from Ozark WoodWorker, Ray Robertson, 525 W Deer Valley Drive, Nixa, MO 65714 for $20
I use a link belt to drive the spindle because I don't use the grinder that often and a standard v-belt takes a 'set' from cold weather and disuse. The link belt does not. I use the fastest speed because my grinder is up against a wall and difficult to change speeds. So far a wheel has not blown up.
Link Belt 6_2018 small.jpg
link belt drive
I also use a Grainger single phase motor because when I got the grinder VFDs were not known to me and I didn't have 3phase in my garage. Now I am not going to spend the money.
Hope this helps some, and good luck with your reconstruction.
--earlgo
Before you do anything, you must do something else first. - Washington's principle.

WO2P
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Joined: Wed Nov 20, 2019 7:17 am

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by WO2P » Mon Nov 25, 2019 9:06 pm

Thank you so much for all your efforts and even braving the cold of November in Ohio for all the measurements, the picture and even calculating the speeds. This information definitely puts me on the right track for chasing down pulleys for my rebuild. I also agree with you about using a link belt and for exactly the same reasons. I will post some pictures when I get a bit farther along with the rebuild. Thank you again for helping me sort out the pulley system on this unit.
Fred
Upstate NY

WO2P
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Joined: Wed Nov 20, 2019 7:17 am

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by WO2P » Sat Nov 30, 2019 1:25 pm

Another question about the "Toolmaker" surface grinder if I may. What spindle oil do you use? I did get a copy of the manual from Ozarktoolmanuals.com and in the text it says to use a "Viscosity of 58-60 Saybolt at 100 Degrees F. I did some searching on the web and it appears to be an oil that has a viscosity of about 5.? I now have a headache and am waving the white flag to ask for help. I am almost ready to spin up the unit for the first time but want to make sure I not destroy the tapered spindle with the wrong viscosity oil. Any help would be greatly appreciated. Thanks in advance.. Fred

earlgo
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Joined: Sat Jan 29, 2011 11:38 am
Location: NE Ohio

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by earlgo » Sun Dec 01, 2019 10:24 am

WO2P: When I got the machine in the late '80s I used hardware store 3 in 1 and then later changed to hardware store 'Turbine oil'. Then after listening to these astute gentlemen on this board, and reading the manual, I bought Mobile Spindle Oil.
Spindle oil.jpg
Mobile Oil
This leaks out constantly, but I am not about to tighten up anything until it is necessary. I just refill the reservoir and continue on like I had good sense.
--earlgo
Before you do anything, you must do something else first. - Washington's principle.

WO2P
Posts: 8
Joined: Wed Nov 20, 2019 7:17 am

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by WO2P » Sun Dec 01, 2019 7:09 pm

Earlgo, Thank you again for your assistance. Velocite #6 will me my oil as well.

Yet another question if I may. On the right side of the spindle there is a spot for a rectangular sign (approx. 2" x 4"). Mine was removed before I got it and I can not find out what it says. I believe it has spindle maintenance. I can not find any images of it on line. If yours is still there can you snap a picture and send it to me. Thank you in advance.. Fred

earlgo
Posts: 1514
Joined: Sat Jan 29, 2011 11:38 am
Location: NE Ohio

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by earlgo » Mon Dec 02, 2019 3:14 pm

WO2P: Here it is, and the reason I have never tried to adjust anything. Yours is a different situation, though, since you got your toolmaker in a box, in KIT form. :)
Spindle plate.jpg
Spindle Plate
I never looked up Velocite E so I don't know if Velocite 6 is the same, but it works.
--earlgo
Before you do anything, you must do something else first. - Washington's principle.

WO2P
Posts: 8
Joined: Wed Nov 20, 2019 7:17 am

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by WO2P » Wed Dec 04, 2019 1:04 pm

You are the best. Thank you for all your support on my project. I am at the point where I am waiting for my spindle oil and 5" pulley now. I plan on using the 5" pulley with the stock spindle pulley until I can locate an original 2 shiv replacement pulley. Again thank you for all your help. Fred

earlgo
Posts: 1514
Joined: Sat Jan 29, 2011 11:38 am
Location: NE Ohio

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by earlgo » Wed Dec 04, 2019 2:41 pm

WO2P: If you need any further help or pictures, just ask.
The spindle taper is 3.00 in/ft so be sure your wheel adapter is the same.
Wm SOPKO & Sons Co.,30030 Lakeland Blvd., Wickliffe, OH 44092 is one of the few suppliers that I have found for this wheel adapter. The part number is 24-816 RH or LH depending on which way your spindle ends up turning. In 1989 I paid $85 for one, so they are not cheap, but they are absolutely correct and well made. http://www.wmsopko.com/sopko_071.htm
If you buy one, be sure you also purchase the wheel extractor which screws in to the end of the adapter and has a jack screw to push the adapter off. It sure is handy and one doesn't have to pound on the back of the wheel. http://www.wmsopko.com/sopko_82.htm
--earlgo
Before you do anything, you must do something else first. - Washington's principle.

WO2P
Posts: 8
Joined: Wed Nov 20, 2019 7:17 am

Re: Delta Milwaukee "Toolmaker" v-belt pulley sizes?

Post by WO2P » Fri Dec 06, 2019 7:08 am

Thank you for the info! In advance of making my first sparks I have watched a LOT of Youtube videos on wheel balancing. The two hubs I currently I have do not have any dynamic balancing weights so it looks like removing grinding stone material is the prescribed process.

The video on this process is here>>> https://www.youtube.com/watch?v=MofRhM_W-Vk

I am not really comfortable with this process for obvious reasons. After I get up and running if vibrations are a problem I may look at fabricating some sort of adjustable balance system. Do you have any words of wisdom or ideas on this subject? Again thank you for all your assistance.

It is great to have a mentor with project.
Fred

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