Selecting a 2MT Standard Length Drill Chuck Arbor
By Products for bench top machinists | LittleMachineShop.com | Published: 2026-10-21
Category: Buying Guides
Learn how to choose a drill chuck arbor for a 2MT (Morse taper) standard length. This guide covers key factors like taper type, length, and compatibility with your mini lathe tailstock.
Quick answer
For most mini lathe tailstock applications, choose a 2MT standard length arbor with a 33JT (Jacobs taper) if you need to mount a drill chuck without cutting the shank.
Understanding the 2MT (Morse Taper) Standard
The 2MT is a common Morse taper size used on many mini lathes. A standard length arbor is designed to fit the tailstock without requiring shortening, simplifying installation. The taper must match your lathe's spindle bore precisely to ensure secure holding and minimal runout.
Why the 33JT (Jacobs Taper) Matters
The 33JT is a specific Jacobs taper size that accepts many common drill chucks. If your chuck has a 33JT female thread, you need an arbor with a 33JT male end. Using an incompatible taper will prevent the chuck from mounting securely or cause excessive wobble.
Decision rules for selecting your arbor
- Taper type match: Confirm your lathe spindle uses a 2MT (Morse taper) and your chuck uses a 33JT (Jacobs taper). If either is different, you need a different arbor. Measure or check your lathe manual for the exact taper sizes.
- Length requirement: Choose a standard length arbor if you do not want to cut the shank. A short Morse taper arbor like the one listed fits directly into the tailstock without trimming. If your lathe has a deep tailstock bore, a standard length may still protrude; measure available depth.
- Chuck compatibility: Ensure the arbor's male taper (33JT) matches the female thread of your drill chuck. Most mini lathe chucks accept 33JT, but verify before purchasing. If your chuck uses a different taper (e.g., 1MT or 2JT), you will need an adapter or different arbor.
Product facts
- Arbor, Drill Chuck 2MT Short to 33JT: This arbor has a short Morse taper and does not need to be cut to use in the tail stock of the mini lathe. You can install it immediately without modification, saving time and avoiding the risk of an uneven cut.
Arbor, Drill Chuck 2MT Short to 33JT
Is this arbor right for you?
Best for
- Machinists who want a simple, no-cut installation on a mini lathe tailstock
- Users with a 2MT spindle and a chuck that accepts a 33JT Jacobs taper
Not for
- Lathes with a non-2MT spindle taper
- Chucks that require a different Jacobs taper size (e.g., 1JT or 2JT)
- Applications where a longer or shorter arbor is needed to fit a deep or shallow tailstock bore
