Kent Kgs 200 Arbor

electrosteam

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My new (to me) SG is coming along well and I getting some good results.
The next step is add different wheels and I need arbors for the new wheels.
The name of William Sopko and Sons Inc popped up after a short search and I have made a standard enquiry a few days ago for an arbor delivered to Sydney, Australia, with no response to date.
I will chase them up, but, are there any other suppliers worth contacting ?
John
 
I bought all my arbors on ebay for pennies on the dollar.
 
Nothing currently on ebay, in Australia or in the US.

How hard is it to make these ?

I haven't got the arbor off my SG yet because it is tight and I don't have an extractor plug.
When I get it off, I may be able to copy it.

The request on Sopko included the extractor.
Am I correct in assuming the extractor consists of a plug that engages the internal thread at the end of the arbor, with a hex head screw that engages the thread in the end of the spindle.
The differing TPI of the two threads then applies extraction force.
I could make one of these and try it out.

John
 
http://www.ebay.com/itm/Used-Norton...756999?hash=item4b0adc4d07:g:UBEAAOSwyLlXpNLc
http://www.ebay.com/itm/Used-Grindi...094252?hash=item33c1a42d2c:g:HSgAAOSwbsBXpNE-
http://www.ebay.com/itm/Used-Norton...094247?hash=item33c1a42d27:g:Bb4AAOSwIgNXpNGY
http://www.ebay.com/itm/Used-Norton...094255?hash=item33c1a42d2f:g:AMEAAOSwyLlXpNBN

I don't know what grinder you have , but these fit mine. Not a super deal but cheap compared to new. All from the same seller so that might be an advantage.
I made a puller for mine from some 1 1/8 hex shaft (just scrap i had) drilled and taped through for a 3/8 bolt that pushes in the center. Does not take much force to remove them.
 
Thanks for those links, I searched for 'arbor' not 'hub', gives me a new lead for the task.

My SG is a Kent KGS 200 and I can feel what I assume are balance weights in the back flange.
Not sure if the hub/arbor fits with a taper.
The manual does not have any details of the hub/arbor, but the spindle diagram seems to show a taper, and the descriptions include the correct method for balancing.

I will proceed with making a puller.
John
 
Whilst researching the various links, I discovered references to Kent being supplied with either a 3"/ft or 3.5"/ft taper.
So, I need to know my machine's taper before I start buying.
I placed an inquiry on Kent in Taiwan for a replacement hub and an extractor.

I am half way through making an extractor.
Very pleased with the fit of the two internal threads straight off the lathe.
Still need to make the push plunger that applies the force.

Kent responded with an acceptable price, so I placed an order, but they also commented that the hub should come off if I tap the hub from behind with a copper drift.
Tried that and off it came.

But, when I measure the taper, it is close to 5:1 or about 2.5"/ft.
The taper measures close to 26.3 mm long, small dia 20.3, large dia 25.5 - a long way from 4:1.
Is this credible - very confused after measuring several times, what am I doing wrong ?

I will need to make a balancing arbor, so the taper size must be resolved.
John
 
Got it sorted, the Sopko datasheets use the heading as though it was part of the specific description.
Actually, Kent may have delivered SGs with three tapers, 11 deg 24 min, 3.5"/ft or 3.0"/ft.
I have the 11 deg 24 min version.
I don't think any of the Norton hubs would fit my spindle.
I have a new adapter heading my way from Kent Taiwan.
John
 
Got the new adapter from Kent with the extractor.
The extractor is just a plug that screws into the adapter internal thread and pushes on the spindle end.
I now have a very complicated home-made extractor that is free to anybody that pays the postage from Sydney.
The SG was performing only so-so, so I took the chuck off, hand stoned the two mating surfaces, and re-fitted the chuck.
Much better results, good enough to now enable me to start checking the granite surface plate.
The next order of business is to acquire some additional wheels, then to make a balancing arbor and stand.
John.
 
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