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lathehand
12-19-2010, 09:02 PM
http://i19.photobucket.com/albums/b157/qaz753/Picture005.jpg

I disassembled it to load into the truck.
Poor thing was reduced to a cut off machine for bolts. Sad ( almost ) end to a nice machine.
It has the original motor. The machine Serial number is 103-2341
No cracked parts. It looks like a typical old machine that was not lubed correctly.The cross feed lead screw is worn to the point of being sharp at the crest. The rack for the table is worn to the teeth being rounded.
The table is very worn. Using a caliper as a depth mike I get thirty to fifty thou of wear. Good thing there is plenty of cast iron left to reestablish the working surfaces.
I am thinking of milling the surfaces back to parallel, then hand scraping them at work using the granite surface plate as a planar referance.
Remake worn bushings, clean, paint and rewire.

rockrat
12-19-2010, 11:19 PM
Nice find. I'll be curious to see your progress.

rock~

mister honey
12-20-2010, 02:40 PM
Thanks for saving this Toolmaker grinder!

I've had a Toolmaker grinder for, at least, the last 25 years.

Right now, it is down for some rework, but it will grind again!

Mike

lathehand
12-20-2010, 07:09 PM
How do I trace the serial number to find the date of manufacture?
Anyone know the pressure angle of the rack?

lane
12-20-2010, 07:19 PM
How do I trace the serial number to find the date of manufacture?
Anyone know the pressure angle of the rack?
14 1/2 degrees.

lathehand
12-20-2010, 08:07 PM
14 1/2 degrees.
Thanks. I was looking at Mcmaster-Carr for a replacement section of gear rack and didn't know what to choose.
Progress.

Ohio Mike
12-20-2010, 10:04 PM
I too have one, however it will be awhile before it gets the attention is deserves.

The Old Wood Working Machines (OWWM) site has information on Delta-Rockwell serial numbers and some interesting history.
http://wiki.owwm.com/Default.aspx?Page=DeltaSerialNumbers

gzig5
12-21-2010, 12:45 AM
I've got one of these and have rebuilt the spindle, but have not reassembled the rest of the machine. Rather than spend a lot of money on rack gears, I suggest converting it to a cable drive. It will operate much smoother. An acquaintance did this on another machine and it was night and day difference. I've got the manuals or you can search for them, they are out there. There is also a Yahoo group for this machine that will have a lot of info.
http://finance.groups.yahoo.com/group/toolmakergrinder/

Greg

gda
12-21-2010, 07:54 AM
For the amount of work you need to do this will certainly be a labor of love!

Good news is that the ways are all square and can be ground. That is what I did with mine. The way the whole head rotates about a pivot I do not think it warrants scraping.

http://bbs.homeshopmachinist.net/showthread.php?t=34899&highlight=delta

lathehand
12-21-2010, 06:11 PM
I've got one of these and have rebuilt the spindle, but have not reassembled the rest of the machine. Rather than spend a lot of money on rack gears, I suggest converting it to a cable drive. It will operate much smoother. An acquaintance did this on another machine and it was night and day difference. I've got the manuals or you can search for them, they are out there. There is also a Yahoo group for this machine that will have a lot of info.
http://finance.groups.yahoo.com/group/toolmakergrinder/

Greg
The rack would be $47.00.
I like the idea of cable for the table. The Mitsui I use at work is cable driven and I like the lack of backlash.
Sidenote- We moved the whole shop to a new location years ago. After I placed and leveled the Mits I was horrified to find the table travel to be binding. I thought we did some damage in the move.
That is how I found the table lock lever that is under the left side of the table. It had been swung half way to the lock position!
Swing the lever and we were back to the free float action I was spoiled by.

lathehand
12-21-2010, 06:16 PM
For the amount of work you need to do this will certainly be a labor of love!

Good news is that the ways are all square and can be ground. That is what I did with mine. The way the whole head rotates about a pivot I do not think it warrants scraping.

http://bbs.homeshopmachinist.net/showthread.php?t=34899&highlight=delta
Labor of love, thats for sure.
I look at it as a semi finished grinder kit. All the castings needed and some are already finish machined.

lathehand
12-21-2010, 06:23 PM
I too have one, however it will be awhile before it gets the attention is deserves.

The Old Wood Working Machines (OWWM) site has information on Delta-Rockwell serial numbers and some interesting history.
http://wiki.owwm.com/Default.aspx?Page=DeltaSerialNumbers
Thanks for the link.

crrmeyer
12-21-2010, 08:43 PM
http://i19.photobucket.com/albums/b157/qaz753/Picture005.jpg

I disassembled it to load into the truck.
Poor thing was reduced to a cut off machine for bolts. Sad ( almost ) end to a nice machine.
It has the original motor. The machine Serial number is 103-2341
No cracked parts. It looks like a typical old machine that was not lubed correctly.The cross feed lead screw is worn to the point of being sharp at the crest. The rack for the table is worn to the teeth being rounded.
The table is very worn. Using a caliper as a depth mike I get thirty to fifty thou of wear. Good thing there is plenty of cast iron left to reestablish the working surfaces.
I am thinking of milling the surfaces back to parallel, then hand scraping them at work using the granite surface plate as a planar referance.
Remake worn bushings, clean, paint and rewire.

Glad to hear most of it is there. I had one a few years ago but it was missing some parts. I looked high and low and did not find what I wanted. So I ended up parting in out on Ebay. Judging for the price the parts went for, other must have had the same problem. I did not remember selling the rack but I was unable to locate it in the material pile after a quick search :(

Ohio Mike
12-21-2010, 09:59 PM
A word of warning. These are an ungainly beast, top heavy and not at all balanced. In other words a real bear to move once assembled. If you need to be moving it round while working on it think of siting it on a skid or building a low centered cart etc for it. Mine is currently bolted down to a mini-skid just big enough to get my pallet jack under.

Ryobiguy
12-22-2010, 05:42 AM
What a coincidence, yesterday I picked up one of those too!

http://img.photobucket.com/albums/v129/Ryobiguy/Grinder/P1040057.jpg

-Matt

lathehand
12-29-2010, 07:48 PM
What a coincidence, yesterday I picked up one of those too!

http://img.photobucket.com/albums/v129/Ryobiguy/Grinder/P1040057.jpg

-Matt
I will have to see if mine has the nice Delta tag on the wheel cover ( under the slop- it -on paint job).

I took the spindle apart. What an interesting design. There is a Fafnir 204kll2 sealed bearing on the drive pulley side.
The wheel end has a tapered cone in a brass( bronze?) housing. Could that really be fit up close enough for precision grinding?
The taper has a few areas that can catch my fingernail. I wonder what the best way would be to refit that bearing, regrind the taper and then lap the housing?

lane
12-29-2010, 07:54 PM
I would not put too much effort in one of those.Even in new state they were not much of a grinder . Better than nothing but nothing to brag about. I have been around and had more than my fair share of them. Just my thoughts on the subject.

lathehand
12-29-2010, 08:01 PM
I would not put too much effort in one of those.Even in new state they were not much of a grinder . Better than nothing but nothing to brag about. I have been around and had more than my fair share of them. Just my thoughts on the subject.
This is a learning project. I can see by the crudeness of the micrometer feed pivot that it is not really a precision grinder.
I can grind at work with the Mitsui grinder if I need something done on a " tight" machine.

TOOLZNTHINGS
12-29-2010, 08:08 PM
Hello,

Having owned one of these grinders the tapered bronze bearing will definitely do the job when adjusted properly. The most important thing I found was the use of a very light spindle oil for lubrication. Don't remember the exact weight, but do a google search for spindle oils. Probably no more than 10 weight at most, looks like water, but it works ! There was a slinger ring in my grinder that brought the oil from the reservoir to the bearing.
I would say if the spindle taper is good I would look to repairing or replacing the bearing. Post us a picture and maybe more of us can offer more help.

Brian

lane
12-29-2010, 08:11 PM
Well learning is a fine thing. That is part of the way I learned and why I had my fair share of them . Fix and sell buy something nice . Harig , k.O.Lee and so forth.

TOOLZNTHINGS
12-29-2010, 08:30 PM
Hello,

Will definitely agree with Lane, was a good place to start, but moved on to a better machine when I needed to get serious in the grinding a lot of work.
As always, depends on your needs.

Brian

lathehand
01-03-2011, 07:24 PM
I am still cleaning and inspecting parts. The column had a coat of rust on it that was taken care of with a scotchbright abrasive pad. There are some score marks that are not too deep. Measuring all over I get .003-.004" under the nominal 4 inch diameter (even in the areas beyond the travel limits).
This part has less than a thousands wear so it is good to go.