Bearings for DW 788 Motor

[Brokentone]

Does anyone happen to know what number bearings fit the Canada made dewalt motor? I have finally got some time to check out the scroll saw after finishing the house from the Florence storm. Motor was locked solid, disassembled and broke the bearings free. Motor runs full and slow speeds but is noisy looks like I will need to change the connecting rod bearing also. This saw was upside down in four feet of brackish water. I am hoping most of the sleeves will be ok as I had lubed them with the synthetic grease last year. I thought I was going to have to buy a Pegas but being old and cheap I need to try and fix the DW first.

Bob

[OCtoolguy]

2 hours ago, Brokentone said:

Does anyone happen to know what number bearings fit the Canada made dewalt motor? I have finally got some time to check out the scroll saw after finishing the house from the Florence storm. Motor was locked solid, disassembled and broke the bearings free. Motor runs full and slow speeds but is noisy looks like I will need to change the connecting rod bearing also. This saw was upside down in four feet of brackish water. I am hoping most of the sleeves will be ok as I had lubed them with the synthetic grease last year. I thought I was going to have to buy a Pegas but being old and cheap I need to try and fix the DW first.

Bob

You said motor bearings. Did you mean that or do you need a list of all the bearings/sleeves? I don't know if anybody on SSV has ever rebuilt the motor. I see motors on eBay from time to time. Not cheap.

 

[Wilson142]

Google will reveal all. Parts are readily available. The complete connecting rod assembly is $25 so a bearing should be cheap.  Internal motor bearings and sleeves, if replaceable should be available also. You'll no doubt need to provide numbers from your specific saw to get the correct ones. Good luck.

[OCtoolguy]

I'm not positive that these are what you are looking for but if so, here ya go. Cheap too.

https://www.ebay.com/itm/BLH7802-Motor-Bearing-Set-OEM-Replacement/142101861520?epid=1540494340&_trkparms=ispr%3D1&hash=item2115ee5490:g:VVEAAOSwRF1cGadr:sc:USPSFirstClass!92649!US!-1&enc=AQADAAAB4KX%2FKt4E1xf3SDqEdBclaYYCqswzB0n6vyEfmYmKoqjxGghAr2r1WxG17IgLJSo3KyPgu5eWPHtCQ6af5NSL1wnK3ZB87iXk7OJ5YpC9w0GYrul83FD3XpFNCr13wtPxIMHiXTAaWbG6vzzlF%2B2NJbuYk%2FkkhRtWnENG0CRSbpwzrf%2F98El2u7CiZW9Kv%2F6wiK0b4xVMy7WCwYac%2Fv38FjGZWtKdyrYNEj1KFaOLb2JjprwuANCpI57C8kDxQ%2Fa1GMnujJwm5q4v6STW2TSlDbE9YFlgI%2FiL%2Fne6a6lrAw2VHNIfg7LLVAzxdSYnXPsQPWRrDRY9%2BZwkscZvTDdryJ%2FgR946n%2F9RwHmqB34dsdlj1k8q83bEABuSLtScBiUv8gLesTVuBuAqYXBJB%2Fm%2BUwfFcowX2SMji6pogRmE194HXuExBIbzUUGyZUQEcu4C0by2yvlP2he%2Bl09N1lzyAkvYm1Ad7OSAS3DQhSNY3s8Pz07T7O1WVz6BhYh0SJJL3VgYzSYksfUULyg%2Fo1PeiJkZtC7tfl5%2FfQShqHGnmGTQYtn7lgEOXHxkttfNeBcmUMNdyKRQ2V6b%2FYRQKdpzfzhLX2kPP%2BQhFwuV5ub%2Bdi2FmjY9JkKlyHPbK5%2FpObSrLg%3D%3D&checksum=142101861520502581e8fddc42e68b1bd0610e940fb6

[Wilson142]

Hmmmm, fasteddybearings. Wonder if he is affiliated with slipperyjoes Midnight auto supply. lol

[barb.j.enders]

13 hours ago, Wilson142 said:

Google will reveal all. Parts are readily available. The complete connecting rod assembly is $25 so a bearing should be cheap.  Internal motor bearings and sleeves, if replaceable should be available also. You'll no doubt need to provide numbers from your specific saw to get the correct ones. Good luck.

Bearings in Canada are not cheap!  I went looking last year for the bearings in the blade holder. Bought the Pegas clamps instead because it was only a few dollars more than all the replacement bearings.

[barb.j.enders]

16 hours ago, Brokentone said:

Does anyone happen to know what number bearings fit the Canada made dewalt motor? I have finally got some time to check out the scroll saw after finishing the house from the Florence storm. Motor was locked solid, disassembled and broke the bearings free. Motor runs full and slow speeds but is noisy looks like I will need to change the connecting rod bearing also. This saw was upside down in four feet of brackish water. I am hoping most of the sleeves will be ok as I had lubed them with the synthetic grease last year. I thought I was going to have to buy a Pegas but being old and cheap I need to try and fix the DW first.

Bob

I have a list of all the bearings required that someone here (I think) passed on to me. I would have to find it & scan it again if you would like me to send it to you.

[kmmcrafts]

I made a post several years back on all the bearing sizes etc one needs to replace all the bearings... That said though... I didn't give the bearing sizes for the actual motor... I never had a need to replace those..

[Wilson142]

2 hours ago, barb.j.enders said:

Bearings in Canada are not cheap!  I went looking last year for the bearings in the blade holder. Bought the Pegas clamps instead because it was only a few dollars more than all the replacement bearings.

The Pegas clamps eliminated the need to replace the bearings?

[CharleyL]

Look for the numbers on the sides of the original bearings. You will likely need a magnifying glass. The bearing manufacturer and part number should be there.

Then do a Google search on that number. There are bearing supply stores in many larger cities and those numbers should get you the replacements much cheaper than buying them from DeWalt. You should also be able to find them online through Google. Fastenall, Grainger, Johnston Supply, and other industrial supply houses are also good sources for bearings. DeWalt and other tool manufacturers don't make bearings. They buy them from one of the bearing manufacturers. If you buy from DeWalt, you will likely pay double what you can buy them elsewhere for.

Charley

[OCtoolguy]

I have the bearing list that was referred to above but it doesn't include motor bearings. I questioned the OP about his needs but no response.

 

[barb.j.enders]

1 hour ago, Wilson142 said:

The Pegas clamps eliminated the need to replace the bearings?

In the blade holder, yes.  I had posted a video late last year about it.  The Pegas clamps come with their own bearings/sleeves.

[OCtoolguy]

1 hour ago, barb.j.enders said:

In the blade holder, yes.  I had posted a video late last year about it.  The Pegas clamps come with their own bearings/sleeves.

Barb, there are many other bearings in that mechanism that need to be serviced at least once. Get some good synthetic grease and a couple of pipe cleaners and at least do that if you don't want to take them apart for inspection. You have only scratched the surface with what you have done.

 

[Brokentone]

Many Thanks to All,

Yes I could use the bearing list. I should have measured the bearings when I had the motor apart. I put it back together to test the circuit board, switch, potentiometer and motor to determine whether to scrap it or not. Ray that looks to be the motor bearings. May also need some sleeve and needle bearings.

Bob

[OCtoolguy]

53 minutes ago, Brokentone said:

Many Thanks to All,

Yes I could use the bearing list. I should have measured the bearings when I had the motor apart. I put it back together to test the circuit board, switch, potentiometer and motor to determine whether to scrap it or not. Ray that looks to be the motor bearings. May also need some sleeve and needle bearings.

Bob

I strongly suggest you contact Vivian at:

VXB.com BALL BEARINGS
2165 S Dupont Dr Unit F
Anaheim CA 92806, USA
Tel (714) 442-2740 Dir. (714)385-0022
Fax  (714) 442-9740
http://www.vxb.com/

She has probably gone through this a thousand times but I'll try to give you as much info as I can. These are the bearing kit numbers and how many you will need to do the entire mechanism with the exception of the motor itself. I have the sleeve numbers around here somewhere. They have to be bought from Dewalt at http://www.service.dewalt.com.

kit # 8616 part # HK0609 times 12

kit # 7492 part # HK0810 times 2

kit # 7189 part # HK1412 times 2

 

Ok, just found the sleeve info. Here it is:

quantity 8 of 286294-00 short sleeve

quantity 2 of 286295-00 long sleeve

quantity 2 of 286430-00 Drive link sleeve

quantity 1 of 286282-00 Pivot rod sleeve

Good luck on your rebuild. If you haven't already watched it, I strongly recommend watching the 4 part video series that Bob Brokaw did for the Gwinnette Wood Workers. It's on Youtube.

 

 

[barb.j.enders]

2 hours ago, octoolguy said:

Barb, there are many other bearings in that mechanism that need to be serviced at least once. Get some good synthetic grease and a couple of pipe cleaners and at least do that if you don't want to take them apart for inspection. You have only scratched the surface with what you have done.

 

After I changed the blade clamps, I had other issues and ultimately DeWalt replaced the whole saw.  Started the new year with a brand new saw.  Not taking it apart anytime soon. I will eventually replace the blade clamps with the Pegas clamps I have.

[Fish]

Spend the money if you can on a new saw.  I replaced all the sleeves and bearings and still had problems.  if you can, buy a good one it's worth it.

 I put mine on a credit card and I love my new saw.

Edited July 14, 2019 by Fish

[OCtoolguy]

2 minutes ago, Fish said:

Spend the money if you can on a new saw.  I replaced all the sleeves and bearings and still had problems.  if you can, buy a good one it's worth it.

 I put mine on a credit card and I love my new saw.

I might have to agree if you aren't mechanically inclined. Once I did all the bearing service on mine, I found that I didn't need to replace anything. I even managed to take the main bearing apart (the one on the main drive link) and squeeze grease into it. There were a couple of problems that I found when I took mine apart that accounted for about 95 % of the noise and vibration. The other noise came from the tensioning rod hitting the cover over it. Once I did the file trick as suggested on Rick's Scrollsaw site, that eliminated that so once it was all back together and everything adjusted, I'd have put it up against most other saws. 

 

[Wilson142]

If all the needle bearings from Vxb need replacing, it's a chunk of change. Although once you're that far into it, you might as well do it right.

Had the same problem with my car. Needed a motor mount. Went ahead and had all 3 done and then had the  water pump and timing belt done as long as they were that far into it.   

[OCtoolguy]

1 hour ago, Wilson142 said:

If all the needle bearings from Vxb need replacing, it's a chunk of change. Although once you're that far into it, you might as well do it right.

Had the same problem with my car. Needed a motor mount. Went ahead and had all 3 done and then had the  water pump and timing belt done as long as they were that far into it.   

I suggest taking the saw apart and inspecting the bearings and sleeves. THEN order only what is needed. Had I ordered a complete set of brgs/sleeves, I'd have wasted a huge chunk of change. Luckily, my saw had not seen much hard use so nothing was badly worn. Inspect first unless you have too much money.

 

[Wilson142]

13 hours ago, octoolguy said:

I suggest taking the saw apart and inspecting the bearings and sleeves. THEN order only what is needed. Had I ordered a complete set of brgs/sleeves, I'd have wasted a huge chunk of change. Luckily, my saw had not seen much hard use so nothing was badly worn. Inspect first unless you have too much money.

 

I agree with not replacing perfectly good parts but having only one saw, I don't want to tear it down, inspect, order and wait to receive parts. Luckily my saw is fairly new and doesn't need anything...yet.  I think I will tear it down enough to properly lube everything.

[teachnlearn]

By measuring the inside and outside measurement of the bearings you should be able to locate any bearing. Take it to a machine shop and a machinist can measure it for you. From an engineering view point the design starts with a set of measurements and the part number is stamped.  Once you have the measurement a bearing can be located by part number or measurement. When you get a replacement have the replacement measured and you will know its the right part. RJF