Help removing K. O. Lee S718HG surface grinder wheel adapter.

[Madhattan]

The exterior threads are L.H. I don't know about the 11/16 spindle nut yet... I'll get back to you on that. I'm seriously considering making a puller now. I have some stock on the shelf.

 

[woodchucker]

not for me, for you. usually the nut tightens which ever way the wheel spins, it turns opposite. so it tighens it on. Usually. I don't know the K.O. but since it's a real nice surface grinder, I would think it does.
Get to know that direction, it is important.

so if you spin clockwise, the nut tightens counter clockwise, and loosens clockwise.

 

[OTmachine]

not for me, for you. usually the nut tightens which ever way the wheel spins, it turns opposite. so it tighens it on. Usually. I don't know the K.O. but since it's a real nice surface grinder, I would think it does.
Get to know that direction, it is important.

so if you spin clockwise, the nut tightens counter clockwise, and loosens clockwise.

My grinder can spin both directions. I have different hubs for both. The retaining bolt stays the same. You can straighten a paper clip, bend 1/8” long one end at 90 degrees, place that end in the threads, then rotate the wheel by hand to see it the thread goes inward or outward. I sometimes use a scribe for this to determine LH or RH threads.

 

[benmychree]

Yes, that is correct, and if the wheel revolves clockwise as with most all surface grinders, the nut in the center would be left handed. The nut on the adaptor should be also left handed so as to tend to be self tightening in operation.

My grinder can spin both directions. I have different hubs for both. The retaining bolt stays the same. You can straighten a paper clip, bend 1/8” long one end at 90 degrees, place that end in the threads, then rotate the wheel by hand to see it the thread goes inward or outward. I sometimes use a scribe for this to determine LH or RH threads.

Generally, only tool & cutter grinders revolve in either direction, for convenience in various cutter grinding operations and setups.

 

[benmychree]

The thread on the OD of my puller measures ,974 - 14 TPI right hand, the puller bolt is 1/2 - 13 NC RH.

 

[Madhattan]

The nut was L.H. threaded. The previous owner gronked the nut, but I found a way to lock the spindle. Looks like I have more cleaning to do.

 

[Madhattan]

Draft puller design

 

[OTmachine]

Boyar Schultz, 1-16 RH internal thread on hub, 1/2-20 flat faced pusher bolt. If need be, you can use modeling clay or wax to get an impression of the threads to check pitch.

 

[Madhattan]

Looks like 16 TPI... and apparently R.H. thread.

 

[Nutfarmer]

The od of the puller is not a standard size. Measure across the top of the threads is .977. The threads per inch is 16.