Milwaukee 48-66-2125 1/2" Drill Chuck Arbor Assembly + Key + more

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Item Number:MLA48-66-2125
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Milwaukee 48-66-2125 1/2" Drill Chuck Arbor Assembly + Key + more

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The 48-66-2125 includes:

  • 1x Milwaukee 1/2" 3-jaw Jacobs Drill Chuck
  • 1x Allen Key
  • 1x Spindle
  • 2x Set Screws
  • 1x Chuck Key
  • 1x Chuck Key Holder
  • 1x Installation instructions


  • Converts the arbor to accept 1/2" diameter drill bits 6" in length
  • Compatible with 4270-20, 4070

The Milwaukee Compact Electromagnetic Drill to 1/2-Inch Chuck Adapter replaces worn-out pieces for your Milwaukee tools. This chuck fits the 4270-20 and 4270-21 Milwaukee electromagnetic drill presses. Those models normally accept Weldon cutters, and this Milwaukee chuck allows you to use a wider variety of bits for extra versatility. Make holes of various sizes using wood or metal bits. The keyed 3-jaw chuck securely holds bits so you can safely operate at high speeds. This Milwaukee chuck is easy to install and remove as you need for added convenience. The metal construction is durable for long-lasting performance.

Tech Specs:

  • Brand: Milwaukee
  • Model: 48-66-2125
  • MPN: 48-66-2125
  • UPC: 045242157334
  • Type: Drill Chuck Arbor Assembly + Key + More
  • Assembled Weight (lbs): 1.5
  • Chuck Capacity (in): 0.5
  • Chuck Design: Keyed
  • Chuck Key Included: Yes
  • Chuck Key Storage: No
  • Chuck Size: 1/2 in
  • Length (in): 2
  • Package Qty.: 1
2 Reviews
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50% (1)
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100% Recommend this product (2 of 2 responses)
By pat
November 6, 2013
Its ok just got to get the screw tight on the flat of the shaft.
By Big Rick
March 5, 2012
Milwaukee drill chuck and arbor
fits the drill very tight, I needed a soft dead blow hammer to get it on. I suppose it will loosen up with time and use. The kit makes my drill more versitile because I can use drill bits in the chuck and remove the chuck and use anular cutters. Very good item if you already have the milwaukee electro-mag drill press 4270.
Prosmakes the drill more versitile

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