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Delta/Rockwell Table Saw Arbor Bearings

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Forum topic by skess posted 01-18-2022 10:53 AM 393 views 0 times favorited 11 replies Add to Favorites Watch
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skess

18 posts in 130 days


01-18-2022 10:53 AM

Topic tags/keywords: tool

Hi,
I just inherited a Delta 34-600 table saw from my uncle. It runs. But, it is old. So, I was thinking of replacing the bearings on both the motor and the arbor if necessary. I’m going to definitely change out the motor bearings. But, I’m not certain on the arbor bearings. I was hoping you guys could guide me as to whether or not to change the arbor bearings.

So my questions are -

How do you tell if the arbor bearings are in need of changing?

Or, should I just change them out because of their age (60 years old).

Thanks,
Steve


11 replies so far

View MrUnix's profile

MrUnix

8998 posts in 3658 days


#1 posted 01-18-2022 12:08 PM

If you don’t know how old or what condition the ones in there now are in, replace them. It’s easy to do and cheap insurance against future damage. And it’s easiest to replace them all at the same time while you have things apart.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Rich_LI

57 posts in 3422 days


#2 posted 01-18-2022 07:19 PM

When I purchased a used Unisaw I changed both plus the belts(3), if you are going through the trouble of doing the motor, I would to the arbor. You can probably do that yourself, I did. The unisaw did not require them to be pressed on, the motor did. For the motor, I took it apart and took it to a local motor shop it was $70 vs $200 for a motor rebuild.

-- Rich LI, Life is short, buy more tools !

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skess

18 posts in 130 days


#3 posted 01-18-2022 08:04 PM

Thanks for the replies guys.
It took a while for my topic to get posted (I guess since I’m new). So in my impatience, I already changed the bearings on the motor. Plus, replaced the old cord. The motor bearings were pretty straight forward.
The arbor bearings are from 1961. So yea – pretty old. They didn’t make any noises and there didn’t seem to be much (if any) play. But at over 50 years old, I assume the grease has seen better days. I tried to coax the seals off the bearings so that I could potentially regrease them instead of removing them. But, I couldn’t get the seals off without potentially damaging them. So, the decision was made to replace them.
So far, I have removed the old arbor beatings. But, I will say this – it’s been more difficult than the motor bearings. If I had the correct pullers and drifts, it wouldn’t be too bad. But, I’ve been having to make up some tools to aid in the process.
I’ll probably have no problem getting the one bearing on the arbor shaft. But, pushing the other one into the arbor housing on the blade side is going to be tricky. I don’t have any sockets that match the OD of the bearing. So, I’m going to have to think on that one a little.

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skess

18 posts in 130 days


#4 posted 01-19-2022 12:38 AM

Getting these bearings onto the arbor is proving difficult. I wish I had access to an arbor press. But, I don’t.
I tried freezing the arbor and heating the bearing. But, it was still too tight to easily push on. Maybe tomorrow I’ll try heating up the bearing a little more. I didn’t heat the bearing all that much this time.

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MrUnix

8998 posts in 3658 days


#5 posted 01-19-2022 02:00 AM

Shouldn’t need much more than an appropriate sized pipe and a wooden mallet or similar. I hate doing the freeze/heat thing as it causes condensation which can cause problems.

Funny side note: I was looking at the parts diagram for that saw over at the ereplacementparts site, and noticed that they have the bearings for it listed at $49.89!! Not sure what you get for that much green, but the picture shows a pretty generic no-name 6203-2RS bearing. Last time I bought 6203’s, they were around $3 a piece for some quality Nachi bearings. Buyer beware!

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View Mike 's profile

Mike

39 posts in 1901 days


#6 posted 01-19-2022 02:05 AM

I’ve used this shop made unit for pressing on dozens of bearings on motors and arbors. I make up hardwood blocks to the sizes I need for pressing on the inner or outer races as req’d.

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skess

18 posts in 130 days


#7 posted 01-19-2022 02:18 AM

Hey Brad,
The bearings for this guy are 88503’s. They are similar to 6203’s except they have extended inner races. I guess you could make the 6203’s work with spacers on either side.

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skess

18 posts in 130 days


#8 posted 01-19-2022 02:20 AM

I like that Mike – pretty flexible.

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MrUnix

8998 posts in 3658 days


#9 posted 01-19-2022 02:44 AM

The bearings for this guy are 88503’s. They are similar to 6203’s except they have extended inner races.
- skess

LOL – 88503’s were $8 a piece last time I ordered some from Accurate Bearing ;)

I’m just amazed at how much these guys can get for off the shelf stuff just because an OEM name is stamped on the box. $50 for $8 bearings is just one example. If you look at the parts available for that saw over at the ereplacement site, you find dozens of examples of standard hardware store items (nuts, bolts, washers, etc…) being sold as if they were made of gold.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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skess

18 posts in 130 days


#10 posted 01-19-2022 02:48 AM

Brad,
I agree – it’s insane.

View Kudzu's profile

Kudzu

12 posts in 182 days


#11 posted 01-19-2022 03:57 AM

I took a look at that site. After I saw the $3 washer and the $4 hex nut, I had had enough.

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