Atlas/Craftsman Serial Numbers and Bearing Dates (if applicable) For Database Entries

Also, my lathe is 10”, with power cross feed. I do not any info on the bearing numbers. It still has cosmoline on a good part of it. I am using WD40 to clean it. It indicates zero end play and a little over .001 runout on the register.
 
Paul,

The Craftsman 101.20140 is a bolt-on replacement. It was made from around 1950 up through about 1965 or 70. The model number of the 101.07403 with QCGB is either 101.27430 (24" between centers) or 101.27440 (36" between centers). I understand that the 101.20145 and 101.201451 can be adapted but I have no details. The latter two fit the 1/2 " bed 12" Commercial machines. Your machine has a 3/8" bed so you might have to start with a 1/8" spacer. The two models built to fit the Atlas 10" might be made to fit, although I've no idea what would be involved other than that you would probably have to make a new change gear bracket (banjo). However, it appears that more of the 101.20140 were made than of the two models for the 10". And more of the 2nd and 3rd variant of the 12" QCGB's were made as they were in production for about 25 years versus about 9 years for the 10" and 7 for the 1st variant 12".

Your machine was probably made in late 1951 or early 1952.
Please post the bed length or the nominal distance between centers of your lathe. Unfortunately, although the Sears catalog number is unique for each bed length, the model number isn't.

You will find the parts manual on the 101.07403 in the Atlas/Craftsman section of Downloads, as well as the installation instructions and parts list of the 101.20140
 
Amsoilman,

Yes, your QC42 is a 10F Series, is a 10X24, and has Timken roller bearings on the spindle. It was probably made in October or November of 1950.
 
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wa5cab said:
Paul,

The Craftsman 101.20140 is a bolt-on replacement. It was made from around 1950 up through about 1965 or 70. The model number of the 101.07403 with QCGB is either 101.27430 (24" between centers) or 101.27440 (36" between centers). I understand that the 101.20145 and 101.201451 can be adapted but I have no details. The latter two fit the 1/2 " bed 12" Commercial machines. Your machine has a 3/8" bed so you might have to start with a 1/8" spacer. The two models built to fit the Atlas 10" might be made to fit, although I've no idea what would be involved other than that you would probably have to make a new change gear bracket (banjo). However, it appears that more of the 101.20140 were made than of the two models for the 10". And more of the 2nd and 3rd variant of the 12" QCGB's were made as they were in production for about 25 years versus about 9 years for the 10" and 7 for the 1st variant 12".

Your machine was probably made in late 1951 or early 1952.
Please post the bed length or the nominal distance between centers of your lathe. Unfortunately, although the Sears catalog number is unique for each bed length, the model number isn't.

You will find the parts manual on the 101.07403 in the Atlas/Craftsman section of Downloads, as well as the installation instructions and parts list of the 101.20140
Click to expand...

Robert, Thank you for the information. The bed is 42 inches and 24 inches between centers.
 
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wa5cab said:
Your machine has a 3/8" bed so you might have to start with a 1/8" spacer.
Click to expand...
After re-reading my post, I decided that I had better make clear that the above sentence only applies to the 101.20145 and 101.201451. The 101.20140 is a bolt-on replacement for the change-gear bearing and change gear banjo.
 
Hello all I have a 101 28990 serial no. 105307 Would some one be so kind as to give me an age?
 
Current best guess is made mid-1969.
 
thank you. This one seems to be in great shape but sure is dirty. Pictures etc. to follow.
 
Yep, most of them are.
 
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