Carriage bearings - Woodworking Talk - Woodworkers Forum
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post #1 of 19 Old 06-20-2020, 04:32 AM Thread Starter
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Carriage bearings

Trying to locate carriage bearings for Craftsman 315.220100 RAS Bearing #976285-001 Any help GREATLY appreciated !
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post #2 of 19 Old 06-20-2020, 05:16 AM
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See if Engels Workshop Montana can help. He is the expert on waggon wheels

.https://engelscoachshop.com/

johnep

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post #3 of 19 Old 06-20-2020, 08:07 AM
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Craftsman RAS 315.220100

welcome to the forum, Reggie.
have you tried Sears Parts Direct ?

their website shows "in stock".

Carriage bearings-bearing.jpg

.

there is no educational alternative to having a front row seat in the School of Hard Knocks.

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post #4 of 19 Old 06-20-2020, 09:02 AM Thread Starter
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I have . The web site says they are in stock but the're not and they won't be getting anymore. I ordered from them and have yet to get a refund.
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post #5 of 19 Old 06-20-2020, 12:34 PM
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Sorry as a limey I confused your request for carriage wheel bearings. Still making waggon wheels is fascinating woodwork.
johnep
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post #6 of 19 Old 06-20-2020, 04:11 PM
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couple options:

DIY cleanout/relube
https://www.woodworkingtalk.com/f27/...repack-218907/

grooved ball bearings are still popular - the issue is size
if you can get an accurate outer dia and the bore, you may have some luck:
https://www.amazon.com/s?k=grooved+ball+bearings
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post #7 of 19 Old 06-21-2020, 01:05 AM
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Try the yellow pages or do a search for power transmission suppliers. These people usually have any type of bearing made, if not they may get it the next day. Take the bearing with you, they find a replacement.
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post #8 of 19 Old 06-21-2020, 08:50 AM
where's my table saw?
 
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Sears doesn't make bearings ...

Quote:
Originally Posted by John Smith_inFL View Post
welcome to the forum, Reggie.
have you tried Sears Parts Direct ?

their website shows "in stock".

Attachment 391253

.

No need to try to get them from Sears, since they were outsourced from the start. The ones I have on my RAS are made either by NICE 8224 or HEIM 578A shown here. A bearing cross reference chart may give you dimensions, I donno?
As you can see the mounting plates are either cast iron or cast aluminum. The cast iron plates came on the 12" saws, if I recall and the aluminum plates were on the 10" saws. I have both types, BUT the carriages will fit interchangeably on either size saw rails.
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The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

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post #9 of 19 Old 06-21-2020, 11:26 AM
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Quote:
Originally Posted by Reggie Caudill View Post
Trying to locate carriage bearings for Craftsman 315.220100 RAS Bearing #976285-001 Any help GREATLY appreciated !
Where are you located?

Here in Southern California, I needed ball bearings of a certain type, and I discovered that there are stores that specialize in nothing but bearings. One of them may have what you need or be able to direct you to someone who can help. Is there a bearing store in a large city near you? Here is the store who helped me:

Orange County Bearing, Inc.
1257 N. Batavia St., Orange, CA 92867
(714) 532-6518

The owner's name is Allen, and knew a lot about bearings. He was helpful and courteous, and had the bearings I wanted at a reasonable cost.
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post #10 of 19 Old 06-21-2020, 05:59 PM
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fwiw . . .
neither the NICE 8224 or HEIM 578A show up at any site/any search.
I was unable to find any "history" site that had a cross reference or dimensions on those numbers.
those were apparently proprietary products that evaporated with Sears downfall.

but note: both companies have changed hands (once or more) and their product offerings/numbering has also changed.
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post #11 of 19 Old 06-22-2020, 09:40 AM
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Google-fu, hope this is right:

http://www.rbceshop.com/product.php?productid=5939

Another try is figuring out both the search term and where to look. I tried
“craftsman radial arm saw carriage bearing“ on *Bay and came up with this (and a bunch of others, but
maybe not the right type?)

https://www.ebay.com/itm/Craftsman-6...YAAOSwgrtccZm0


Quote:
Originally Posted by TomCT2 View Post
fwiw . . .
neither the NICE 8224 or HEIM 578A show up at any site/any search.
I was unable to find any "history" site that had a cross reference or dimensions on those numbers.
those were apparently proprietary products that evaporated with Sears downfall.

but note: both companies have changed hands (once or more) and their product offerings/numbering has also changed.
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post #12 of 19 Old 06-22-2020, 04:37 PM
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unless you have the bore and outer diameter, it's simply not possible to say it can work because it "looks the same"


those two dimensions are critical, but not the end of the issue.

the groove in the outer ring can be V shaped, or round, or u-shaped, or square shaped . . .
the size of the groove also has to be suitable to the adjustment range on the RAS.
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post #13 of 19 Old 06-22-2020, 07:07 PM
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Not knowing where you are located... I suggest finding a bearing supplier near you like Motion industries or Bearing Service.... take the bearing and the stud, and they can easily find you a replacement. Most of the radial saws sold by Sears were made by Emmerson electric.

Gary

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post #14 of 19 Old 06-22-2020, 10:49 PM
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Note: The 10" and 12" RAS carriages will interchange on the rails of either frame BUT the bearings are different on the 10" than the 12". Don't buy the wrong ones thinking they are the same.
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post #15 of 19 Old 06-23-2020, 12:02 AM
where's my table saw?
 
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Is that so?

Quote:
Originally Posted by JayArr View Post
Note: The 10" and 12" RAS carriages will interchange on the rails of either frame BUT the bearings are different on the 10" than the 12". Don't buy the wrong ones thinking they are the same.

What is the difference....OD, ID ? The rails are the same, so the V groove must be the same or they wouldn't be interchangeable. I will measure the OD and ID on both tomorrow AM. I just assumed they were made by different manufacturers, some by NICE others by HEIM.



I measured them and found:

Cast iron support HEIM: 1.30" OD or 37.1 mm, 1.0855 ID or 27.57 mm

Aluminum support NICE: 1.3005" OD or 33.12 mm, 1.08 ID or 27.37 mm
Thickness: 1/2" or .4940" or 12.56 mm
Rail width: .3670" or 9.32 mm

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by woodnthings; 06-23-2020 at 01:33 AM. Reason: added measurements
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post #16 of 19 Old 06-23-2020, 09:11 AM
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Hi Woodnthings

Yours seem both the same but I just measured mine and they are different so there must be different carriages for the 10" saws, I'll assume the 12" are all the same.

10" saw Model 113.23111 outer diameter 1 3/16 (1.1875"), inner diameter 15/16" (0.9375") Sears Part# 63350

12" saw Model 113.23301 outer diameter 1 5/16 (1.3125"), inner diameter 1 3/32 (1.09375") Sears Part# 63117

The spacing width is the same, I can change from the 10" carriage to the 12" on either saw.

Jeff
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post #17 of 19 Old 06-23-2020, 09:23 AM
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I waited 8 months for back ordered bearings for a Rockwell saw. Finally gave up and turned a set myself. I did get a refund.

As people have pointed out, the inner portion of a grooved bearing will conform to ball bearing standards, but the outer grooved rim will be made to match a particular track.

If all else fails, the supplier I used when I built tracks into machines was Bishop-Wisecarver. They make tracks and carriage bearings to fit them. It would be a long shot for one of their standard bearings to fit your track, so this is a last resort.
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post #18 of 19 Old 06-23-2020, 09:36 AM
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Here's an added piece of information in case you decide to have some made or go looking in a catalogue for a generic bearing.

The grooved bearing inner radius does NOT match the radius of the rod it travels on. The radius of the rod is larger so it doesn't fit all the way into the bearing groove. It contacts on two points only (top and bottom) and you can see daylight between the rest of the bearing and rod. My first instinct was that the radius' would match and the rod would seat right into the bearing but when you think about it there is much less friction if the contact points between the bearing and rail are minimized.

JayArr
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Last edited by JayArr; 06-23-2020 at 09:44 AM.
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post #19 of 19 Old 06-23-2020, 11:46 AM
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Yes, that's because .....

Quote:
Originally Posted by JayArr View Post
Here's an added piece of information in case you decide to have some made or go looking in a catalogue for a generic bearing.

The grooved bearing inner radius does NOT match the radius of the rod it travels on. The radius of the rod is larger so it doesn't fit all the way into the bearing groove. It contacts on two points only (top and bottom) and you can see daylight between the rest of the bearing and rod. My first instinct was that the radius' would match and the rod would seat right into the bearing but when you think about it there is much less friction if the contact points between the bearing and rail are minimized.

JayArr

The hardened steel rails are 1/2 round, the groove in the bearings is "V" shaped. I have an older Craftsman 10" RAS that I inherited where the rails are cast right into the arm.
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The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by woodnthings; 06-23-2020 at 11:55 AM.
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