?

I have attached the ID info from Grizzly.? Mine is a manual gear change, not the quick change which I think is the 67.? There is no plate with 37, only the serial number.

I will verify the 2-1/4x6 with a machinist friend.? I recently purchased some backplates with that dimension but have not tried to put them on the lathe.? It is currently buried.? I am renovating the shop and everything is piled up in front of it and all the accessories.

Thank you for the info.

Rick

?

?

Is there a plate with catalog no. 37 stamped on it?

Why I ask is this is about the time period they changed the 15” base catalog number to 67.

If your spindle is a 2-1/4-6tpi, it’s usually dated after Dec. of 1924, and the approximant time

of the model change. The older model 37 usually had a 2-1/4-8tpi spindle.

The taper is the same .602, the large end of the taper is 1.325.

The 14-1/2-inch lathe prior to Sept. of 1948 had the same spindle thread and taper dimensions.

They held a No. 3 MT center with a spindle adapter sleeve

They used a No. 4 SBL Collet with a collet adapter sleeve.

Hope that helps,

Steve

?

?

Looking for options to add collets to my very old SB 15x8 lathe.? I have seen the recent posts on using a backplate and ebay/amazon ER40 chuck.? Wondering what was the original taper in the tube of my SB model 37?? Is it morse or what I believe is SB propietary?? If morse, then I would need a drawbar and nut for the tube.? As close as I can tell the threads are 2-1/4x6, not 2-1/4x8 like the newer lathes.
I have multiple chucks and backplates if I want to go the ER40 route.? I am a beginner as to working with lathes.? Shop class 55 years ago.?