Author Topic: Block Grinder rescue - UPDATE: Go-Blue! 1 H.P. Model 257.191600  (Read 19499 times)

Offline torqueman2002

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I picked up this CM Block grinder off CL for $60 a couple of years ago. I stashed it away and dragged it out a couple of days ago to see what needs to be done to put it back in shape. I put a tie wrap through the prongs on the plug later, to remind me it makes some scary sounds. I discovered what was making the sounds and other sins covered up by that quick and dirty Ford engine blue paint job.

Here's Big Blue; aka - BB. UPDATE - New name: Go Blue!


I think the label is under the blue paint; but, judging by the base with water tray and 8" wire wheel and stone, it looks like a 0.75 or 1.0 HP (dare I hope for a Crown Top Commercial grade?). Today I'll try to get the paint off without ruining the label.


Here's the case split with the armature and other electrics already removed - which I'll show later. This view shows winding and case orientation (I'll never remember).


Cord's strain relief/bushing pushes in from the outside of the case.


Left hand bearing and case. This thing has seen water in it's past; rusty puddle is Kroil.


I was lucky, the shaft and bearings separated from the case halves by gently tapping with a soft faced hammer; after a soaking with Kroil. Left hand packing, spring type washer, and bearing. Not show here is a 'C' clip on the other side of the bearing.




Right hand side.


View of 'C' Clip on inside face of right hand bearing.     Tip to self: Remove this clip Before using bearing separator & puller.  smackmyself


Bearing separator installed and ready for puller to remove left side bearing. Shaft cleaned up with emory cloth. See: Tip to self, above.


The shaft has a little damage that will clean up and the C clip survived. I forgot to get pictures. OK, here they are.
The cleaned up shaft and C clip.








Left bearing ID.


Right bearing ID.


Local shop helped me out with the old & discontinued bearings, with a replacement for these most commonly used bearing size.
Bearing Service
13400 Newburgh Rd.
Livonia, MI 48150
734-591-0400
FAX 734-591-1688
800-929-0200
http://www.bearingservice.com/





More later; back into the shop for more fun.

Thanks for looking. Questions and replies welcomed.  :conf:

Edited: 13Jul10 - Add pics of cleaned up shaft and bearing 'C' clip.
« Last Edit: March 29, 2014, 12:34:08 AM by torqueman2002 »
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Offline torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #1 on: July 09, 2013, 02:57:30 PM »
More pics. Some cleaning up of the case and cover.

The left hand case looks much better than the right hand side. Surprising, since the left bearing was so much worse. Cleaning up only the bearing boss, very light touch here and on the right cover.


The right bearing feels good, smooth and without noise; what's with the case then?
Just using what's at hand. Any one know which color Roll-Loc is more aggressive?


Cases after some time in the media blaster, I use Black Diamond from TSC.


Inside the cases.


Getting ready for paint.


Inside of cover, more evidence of water.


Getting the paint off the label, to see what model and HP BB is.


I left the stripper on less than 10 min. and the blue came off easily; not hurting the label!

What? It's there, look at the lower left corner. There's the label, or what is left. Can ANYONE tell from this what I have!!??  smackmyself

Oh well, it was worth the try; into the blaster with it!
« Last Edit: July 09, 2013, 03:38:50 PM by torqueman2002 »
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Offline Hofferwood

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #2 on: July 09, 2013, 04:23:43 PM »
Looking good as usual Mike  thumbsup2
We have a Bearing Service down here too, on Allen rd. Very helpful guys.
Tractor Supply is THE place to get Black Diamond, propane refills too--they fill 'tlii it won't take no more` th-smile (I hit the one in Monroe)

Isn't it done yet------I'll check back in five minutes     lolx lolx lolx
Chuck

If it aint broke, Fix it till it is!

Offline dawg

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #3 on: July 09, 2013, 04:52:38 PM »
Great job, nice pix. It's too bad some people don't leave well enough alone. The guy might have been able to get more money than $60. It appears to be a larger hp grinder but don't know what.

Steve
« Last Edit: July 09, 2013, 05:00:35 PM by dawg »

Offline dawg

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #4 on: July 09, 2013, 05:11:10 PM »
I looked in a 1966 catalog to see one close, but it isn't exactly the same. It has 7-inch wheels but is only a half horse motor.

Steve

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #5 on: July 09, 2013, 05:31:21 PM »
Here's another one from a 1955 catalog and it looks closer to what you have. It is a half horse power though. That was really the top of the line back then and in the 1966 catalog, the larger HP grinders didn't look even close to yours.

He-he, note the $7.00 down payment.  th-smile
The price is probably the equivalent of a $500 grinder today.

Steve
« Last Edit: July 09, 2013, 05:37:19 PM by dawg »

Online goodfellow

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #6 on: July 09, 2013, 06:36:50 PM »
Based on that 1955 price, that grinder would run about $582 today. Tools were expensive then, so they built them to last and to provide value. Compared to today, tools are pretty inexpesive, but the value and longevity is mostly gone; unless you're willing to shell out the BIG dollars.

Offline scottg

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #7 on: July 09, 2013, 08:39:16 PM »
I don't know what model this is either, but nobody ever put 8" wheels on a hobby grinder in the 60's.
     It kind of looks like the lightweight toolrests because of the tapped holes in the side covers, but then there is the hole on each side of the little dunk tank, so they could have been the more robust ones.
  Maybe there were submodels made when it was new,  and you could get either. Sears always did have a good, better, best scheme going.
  I would hit the salvation army or swap meet for a flexy neck lamp for it. Should be easy and cheap.
 I use a full face shield when I grind anything with any tool, so I wouldn't worry about eye shields.
 
 I bet its the 3/4 horse model. A really desirable grinder. Hope it works out nice for you. 
  yours Scott 

Offline torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #8 on: July 09, 2013, 08:39:22 PM »
Looking good as usual Mike  thumbsup2
We have a Bearing Service down here too, on Allen rd. Very helpful guys.
Tractor Supply is THE place to get Black Diamond, propane refills too--they fill 'tlii it won't take no more` th-smile (I hit the one in Monroe)

Isn't it done yet------I'll check back in five minutes     lolx lolx lolx

I hit the TSC in Milford/S. Lyons; it's on the route to/from work.

I like their Velspar Tractor Implement paint, but this guy is rough and I thought Rust-Oleum Hammered Deep Blue would look good for BB.

But -  sadx HD didn't have any, in fact I cannot find it on-line, even though it's on their color chart. (Sends eMail to RO customer assistance).

I've been looking through Lowes on-line RO color chart for other blues, man there are a lot.

I hope to get a coat of primer on it tonight.

More pics. in the hopper, but I find I spend almost as much time posting a project as I do on the project. Who'd guess I jockey a keyboard 75% of the time at work?
« Last Edit: July 09, 2013, 09:12:12 PM by torqueman2002 »
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Offline torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #9 on: July 09, 2013, 08:42:19 PM »
I looked in a 1966 catalog to see one close, but it isn't exactly the same. It has 7-inch wheels but is only a half horse motor.

Steve

I love the 3-prong adapter!

That is cool, thanks! I love looking back.
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Offline torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #10 on: July 09, 2013, 08:44:51 PM »
Based on that 1955 price, that grinder would run about $582 today. Tools were expensive then, so they built them to last and to provide value. Compared to today, tools are pretty inexpesive, but the value and longevity is mostly gone; unless you're willing to shell out the BIG dollars.

about $582 today  :eek:

That's Baldor $$, probably quality too.
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Offline torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #11 on: July 09, 2013, 08:56:04 PM »
Here's another one from a 1955 catalog and it looks closer to what you have. It is a half horse power though. That was really the top of the line back then and in the 1966 catalog, the larger HP grinders didn't look even close to yours.

He-he, note the $7.00 down payment.  th-smile
The price is probably the equivalent of a $500 grinder today.

Steve

Lay-away! I never used it, but my parents did in the 50's & 60's!

It does look like the cooling tray and tool rest, but the switch looks different.

I looks like the 1.0 HP I picked up about a year ago from a retired Sears hardware/tool department salesman. Original owner to boot!


But it could be like the 0.75 HP one with a different switch. Both have 8" wheels/stones.


 shrugx

I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Offline dawg

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #12 on: July 09, 2013, 09:15:28 PM »
Here's another one from a 1955 catalog and it looks closer to what you have. It is a half horse power though. That was really the top of the line back then and in the 1966 catalog, the larger HP grinders didn't look even close to yours.

He-he, note the $7.00 down payment.  th-smile
The price is probably the equivalent of a $500 grinder today.

Steve
Lay-away! I never used it, but my parents did in the 50's & 60's!

It does look like the cooling tray and tool rest, but the switch looks different.

I looks like the 1.0 HP I picked up about a year ago from a retired Sears hardware/tool department salesman. Original owner to boot!

But it could be like the 0.75 HP one with a different switch. Both have 8" wheels/stones.

 shrugx

I don't have every Craftsman catalog but the ones I did see larger than 1/2 HP didn't even look close to yours in every way. The one (1 hp) above might be newer than 1966, just a guess. There's definitely two different logos.

I think the more interesting aspect of prices Ray and I touched on, is that I think retailers and manufacturers try to stick with a price point and stay there . . . no matter what. Either that, or consumers in general won't pay more period. Maybe both.

The result is always lower quality than in the past, cutting costs of production.

Steve
« Last Edit: July 09, 2013, 09:41:06 PM by dawg »

Offline torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #13 on: July 09, 2013, 09:40:08 PM »
     It kind of looks like the lightweight toolrests because of the tapped holes in the side covers, but then there is the hole on each side of the little dunk tank, so they could have been the more robust ones.
  Maybe there were submodels made when it was new,  and you could get either. Sears always did have a good, better, best scheme going.
  I would hit the salvation army or swap meet for a flexy neck lamp for it. Should be easy and cheap.
 I use a full face shield when I grind anything with any tool, so I wouldn't worry about eye shields.
 
 I bet its the 3/4 horse model. A really desirable grinder. Hope it works out nice for you. 
  yours Scott

The tapped side cover holes are a puzzler, they're not on the 0.75 or 1.0 HP models with that dunk-tank-base in the pics. above.  scratchhead

I have a couple of g-necks in mind.
The new.


The vintage.




I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

Offline torqueman2002

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Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #14 on: July 09, 2013, 09:47:34 PM »
... I think retailers and manufacturers try to stick with a price point and stay there . . . no matter what. Either that, or consumers in general won't pay more period. Maybe both.

The result is always lower quality than in the past, cutting costs of production.

Steve
Yes, thus we have lower quality grinders, tools, ... sourced from Japan, Mexico, Korea, Taiwan, China, and India, over the years; the next will likely be Africa with it's very young population.
I am a Blockhead, Man! http://tinyurl.com/CM-Block-Grinders-Why-the-Fuss

"I got to show the young boys how not to do it. I haven't showed them everything not to do, yet. It's a big job!" - Otto Kilcher

"Well, I don't wanna be a superman, I just wanna go somewhere, use my hands, and keep it simple. Oh real simple" - Keb' Mo'

The Garage Gazette

Re: Block Grinder rescue - HD Big Blue unknown model and HP
« Reply #14 on: July 09, 2013, 09:47:34 PM »

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