POWER OF ATTORNEY
For Executing and Filing Forms 3, 4 and 5
KNOW ALL BY THESE PRESENTS, that the undersigned
hereby constitutes and appoints each of Dr. Michael J.
Hartnett, Daniel A. Bergeron and any present or future
Secretary or Assistant Secretary of RBC Bearings
Incorporated or any of them, each acting alone,
his/her true and lawful attorney-in-fact to:
(1)	execute for and on behalf of the
undersigned a Form 3, Form 4 or Form 5 relating to the
securities of RBC Bearings Incorporated, in accordance
with Section 16(a) of the Securities Exchange Act of
1934 and the rules thereunder;
(2)	do and perform any and all acts for an
on behalf of the undersigned which may be necessary or
desirable to complete the execution of such Form 3,
Form 4 or Form 5 and the timely filing of such form
with the United States Securities and Exchange
Commission and any other authority; and
(3)	take any other action of any type
whatsoever in connection with the foregoing which, in
the opinion of such attorney-in-fact, may be of
benefit to, in the best interest of, or legally
required by, the undersigned, it being understood that
the documents executed by such attorney-in-fact on
behalf of the undersigned pursuant to this power of
Attorney shall be in such form and shall contain such
terms and conditions as such attorney-in-fact may
approve in his discretion.
The undersigned hereby grants to each such
attorney-in-fact full power and authority to do and
perform all and every act and thing whatsoever
requisite, necessary and proper to be done in the
exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as such
attorney-in-fact might or could do if personally
present, hereby ratifying and confirming all that such
attorney-in-fact shall lawfully do or cause to be done
by virtue of this Power of Attorney and the rights and
powers herein granted.  The undersigned acknowledges
that each of the foregoing attorneys-in-fact, in
serving in such capacity at the request of the
undersigned, is not assuming any of the undersigned's
responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934.  This Power of
Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms 3,
4 or 5 with respect to the undersigned's holdings of
and transactions in securities issued by RBC Bearings
Incorporated unless earlier revoked by the undersigned
in a signed writing delivered to the foregoing
attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has caused
this Power of Attorney to be executed as of this 5th
day of August, 2005.

/s/ William P. Killian
Name:
SWORN TO AND SUBSCRIBED before me this 5th day of
August 2005, by William P. Killian.  He is personally known to
me and who did take an oath.

NOTARY PUBLIC Evelyn Blower Brown

State of Florida
My Commission Expires: September 2, 2008