Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
COLVIN TERRY R
  2. Issuer Name and Ticker or Trading Symbol
REGAL BELOIT CORP [RBC]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP/Human Resources
(Last)
(First)
(Middle)
6771 WHITE OAK DRIVE
3. Date of Earliest Transaction (Month/Day/Year)
05/02/2011
(Street)

SOUTH BELOIT, IL 61080
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock               927 (1) I Retirement Savings Plan
Common Stock               5,708 D  
Common Stock 05/02/2011   F   284 D $ 75.52 5,424 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Appreciation Rights $ 42.94             09/11/2008(2) 09/11/2016 Common Stock 7,500   7,500 D  
Stock Appreciation Rights $ 44.12             05/01/2009(3) 05/01/2017 Common Stock 7,500   7,500 D  
Stock Appreciation Rights $ 42.28             05/02/2010(3) 05/02/2018 Common Stock 9,000   9,000 D  
Stock Appreciation Rights $ 42.65             05/08/2011(3) 05/08/2019 Common Stock 15,000   15,000 D  
Stock Appreciation Rights $ 61.36             05/05/2012(3) 05/05/2020 Common Stock 12,000   12,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
COLVIN TERRY R
6771 WHITE OAK DRIVE
SOUTH BELOIT, IL 61080
      VP/Human Resources  

Signatures

 /s/ Peter C. Underwood as Power of Attorney   05/04/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Balance reflects the most current data available with regard to holdings in the Regal-Beloit Coporation Retirement Savings Plan.
(2) Granted as stock-settled Stock Appreciation Rights (SARs) under the 2003 Equity Incentive Plan. The SARs vest and become exercisable 40% on the second anniversary of the grant date, 60% on the third anniversay, 80% on the fourth anniversary, and 100% on the fifth anniversary.
(3) Granted as stock-settled Stock Appreciation Rights (SARs) under the 2007 Equity Inventive Plan. The SARs vest and become exercisable 40% on the scond anniversary of the grant date, 60% on the third anniversary, 80% on the fourth anniversary and 100% on the fifth anniversary.

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