What are these

paulmcohen · Post by **paulmcohen** » Mon Jun 20, 2011 2:36 am

I am cleaning up my shop before starting my PowerPro DIY upgrade. I found two arbors and I don't know what they are. They could be from a 500 or 520, can anyone identify these.

The two pictures should be the same just from different angles. I don't want to put a 500 arbor on a PowerPro.

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damagi · Post by **damagi** » Mon Jun 20, 2011 10:14 am

paulmcohen wrote:I am cleaning up my shop before starting my PowerPro DIY upgrade. I found two arbors and I don't know what they are. They could be from a 500 or 520, can anyone identify these.

The two pictures should be the same just from different angles. I don't want to put a 500 arbor on a PowerPro.

[ATTACH]13426[/ATTACH]

[ATTACH]13427[/ATTACH]

Looks like a pair of dado/moulder arbors.

http://www.shopsmith.com/ownersite/cata ... oarbor.htm

The spacers seem to have been split up between the two in an uneven manner though...maybe you have some other spacers lying around?

paulmcohen · Post by **paulmcohen** » Mon Jun 20, 2011 2:10 pm

damagi wrote:Looks like a pair of dado/moulder arbors.

http://www.shopsmith.com/ownersite/catalog/ms_molderdadoarbor.htm

The spacers seem to have been split up between the two in an uneven manner though...maybe you have some other spacers lying around?

No other parts lying around, the two screws are different lengths and the part that connects to the headstocks are also different. Will both of these work with a PowerPro? I can't think of why I would have two unless one was for a 500 and one for a 520, do both style machines use the same dado arbor?

dusty · Post by **dusty** » Mon Jun 20, 2011 3:00 pm

paulmcohen wrote:No other parts lying around, the two screws are different lengths and the part that connects to the headstocks are also different. Will both of these work with a PowerPro? I can't think of why I would have two unless one was for a 500 and one for a 520, do both style machines use the same dado arbor?

If you take the nuts and washers off both and then compare what is left (the arbor only) I think you will find that they are near identical. I also believe that it will be apparent that they are both compatible to the Shopsmith 505/510/520/PowerPro headstock.

JPG · Post by **JPG** » Mon Jun 20, 2011 4:53 pm

There have been multiple versions of the molder/dado arbor with varying threaded lengths. Rob knows!

As far as M5/MV-500. . . 520 goes a dado or a molder requires a special setup(arbor/device/table insert) so there is no relevance to which model they are used on.

Now the saw blade arbors, come in two lengths(M5,MV-500 and MV-505...520). All they do differently is to position the blade a different distance out from the headstock with the quill fully retracted.

SDSSmith · Post by **SDSSmith** » Mon Jun 20, 2011 5:20 pm

paulmcohen wrote:I am cleaning up my shop before starting my PowerPro DIY upgrade. I found two arbors and I don't know what they are. They could be from a 500 or 520, can anyone identify these.

The two pictures should be the same just from different angles. I don't want to put a 500 arbor on a PowerPro.

[ATTACH]13426[/ATTACH]

[ATTACH]13427[/ATTACH]

Paul, I would guess that the arbor on the left is a 5/8" Universal Arbor and the one on the right is a 5/8" molder/dado arbor. The Universal arbor measures about 3-1/8" long and uses a smaller wrench on the quill side than the molder/dado arbor. The molder/dado arbor is about 3-3/8" long. Depending on the width of you carriage stop ring, you may find that the Universal arbor can be used without interfering with the table support tiebar on a model 510/520/7. Generally when using the molder dado arbor, the carriage needs to be moved to the right so that the end of the arbor does not hit the table support tiebar.

As has already been said, they will work fine with the PowerPro.

Ron309753 · Post by **Ron309753** » Mon Jun 20, 2011 8:13 pm

Rob is correct. The thinner arbor is an old Magna Universal Arbor. Per the box, "For quick sure mounting of saw blades, grinding wheels, dado sets, etc,."

The thicker one is Shopsmith's beefier version of the same thing.

I see no reason why you couldn't use either, but you appear to be missing some washers and a spacer (see attached)

Sincerely,

Ron309753

fjimp · Post by **fjimp** » Mon Jun 20, 2011 8:29 pm

Wow you gentlemen are timely in this discussion. Actually I am always surprised at how often I am trying to remember what part I bought to make another work. Sunday I dug out my 8" Freud Dial a Dado then spent another hour finding the right harbor. Then today you folks posted pictures confirming my correct choice. Incidentally the bottom of the cut was perfectly flat and square to the sides. Fjimp

Ron309753 · Post by **Ron309753** » Mon Jun 20, 2011 8:50 pm

I also have a spare thick washer/spacer. If you need it to make both arbors useable, send me a PM and I'll get it to you.

Sincerely,

Ron309753

paulmcohen · Post by **paulmcohen** » Tue Jun 21, 2011 2:47 am

Ron309753 wrote:I also have a spare thick washer/spacer. If you need it to make both arbors usable, send me a PM and I'll get it to you.

Sincerely,

Ron309753

I purchased everything new from Shopsmith so if I am missing something in the picture I have it (or will after cleaning the rest of my shop before my PowerPro upgrade project). Thanks for the offer though.