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How to Install a Torque-Rite Drawbar on a Bridgeport Mill

The draw bar on your Bridgeport mill is used to secure the collet when attaching a cutting tool. A draw bar is secured by threading it onto the collet. Installing a new Torque-Rite draw bar is done by first removing the old draw bar from the mill. Make sure that all safety protocols are followed to prevent injury.

Things You'll Need

Wrench
Rubber mallet
Adjustable wrench
Draw bar spacers

Instructions

- 1
  Retract the quill up to its highest point and lock in place. Press the brake on the mill and then loosen the draw bar by turning counterclockwise with the wrench.
- 2
  Strike the top of the draw bar gently with a rubber mallet. Repeat this step until the collet comes off of the spindle.
- 3
  Loosen the collet from the draw bar by turning it counterclockwise with an adjustable wrench. Remove the draw bar from the collet.
- 4
  Position your new Torque-Rite draw bar on the collet. Place the collet back onto the spindle. Check the length of the draw bar on the mill and insert a spacer if necessary.
- 5
  Align the key in the spindle with the key-way on the collet and then thread the draw bar onto the collet. Press the brake and tighten the draw bar down by turning it clockwise with the wrench.

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