Re: Collets for 1922 SB model 37 15" lathe
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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 ?
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From: [email protected] < [email protected]> On Behalf Of Rick Swineford Sent: Saturday, February 11, 2023 9:53 PM To: [email protected]Subject: [SouthBendLathe] Collets for 1922 SB model 37 15" lathe ? 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.?
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