Im working on getting my 1930 Carlton radial drill going, and was wondering about the spindle. It has #4 morse taper, second slot for a keeper, but what were the two notches (cutouts like for keystock) at the bottom of the spindle used for? I havent found any pictures of any morse taper arbor that drove with those notches. Enlighten me on how they were used. TIA
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old Carlton radial drill spindle notches
- Thread starter gmark1
- Start date
- Replies 4
- Views 1,293
johnoder
Diamond
- Joined
- Jul 16, 2004
- Location
- Houston, TX USA
You could buy MT to NMBT adapters to plug into your HBM taper from Scully Jones circa 1942. Possibly Carlton had something similar - but earlier in mind. NMTB were standardized on milling machines in about '27. Two face keys in the notches
Great for face mills
Great for face mills
BrianB
Hot Rolled
- Joined
- Aug 24, 2006
- Location
- Shelbyville, Ky
My Carlton has the spindle nose made like my G&L it is designed for MT tooling that had flats on each side for delivering torque much like how a mill spindle keys works. This kept from shearing the MT tang in high torque operations.
