Do I need a Standard Chuck Alignment Guide?

Most standard 0.5” (1/2") keyed or keyless chucks do not require a Chuck Alignment Guide as there is a large enough flat metallic surface to magnetically hold BullseyeBore Core in place during drilling operations without the threat of lateral displacement (sliding across the flat chuck face). However, there are two cases where a Standard Chuck Alignment Guide can be very helpful:

  • First, if you plan to repeatedly mount and dismount BullseyeBore Core on your drill chuck, a Standard Chuck Alignment Guide can be helpful. The Standard Chuck Alignment Guide provides a means to consistently center BullseyeBore Core onto the flat chuck face during installation. Mounting BullseyeBore Core on the center of the flat chuck face during installation leads to better balance and rotational stability during drilling operations.

  • Second, if you have a drill with a small chuck or a hex shank bit chuck, a Standard Chuck Alignment Guide can be helpful. Lateral displacement (sliding slightly across the flat chuck face) can occur with smaller chucks such as standard 0.375” (3/8”) keyed or keyless chucks or standard 0.25” (1/4”) hex shank chucks during drilling or electric breaking.

The use of a Standard Chuck Alignment Guide typically prevents both issues and is recommended. Standard Chuck Alignment Guides are inexpensive, and we always recommended purchasing at least one set to carry and optionally use with BullseyeBore Core. 

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