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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

ARNOLD MICHAEL C 		2. Issuer Name and Ticker or Trading Symbol

TIMKEN CO [ TKR ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
ExVP Brngs & Pwr Transmission
(Last)          (First)          (Middle)

1835 DUEBER AVE. S. W. 		3. Date of Earliest Transaction (MM/DD/YYYY)

8/3/2010
(Street)

CANTON, OH 44706
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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   8/3/2010     M    15000   A $24.14   95791   D  
 
Common Stock   8/3/2010     S    13158   D $34.28   82633   D  
 
Common Stock   8/3/2010     F    1842   D $34.40   80791   D  
 
Common Stock   8/3/2010     M    30000   A $25.21   110791   D  
 
Common Stock   8/3/2010     S    26699   D $34.15   84092   D  
 
Common Stock   8/3/2010     F    3301   D $34.40   80791   D  
 
Common Stock   8/3/2010     M    30000   A $30.93   110791   D  
 
Common Stock   8/3/2010     S    28735   D $34.22   82052   D  
 
Common Stock   8/3/2010     F    1265   D $34.46   80791   D  
 
Common Stock   8/3/2010     M    26250   A $29.23   107041   D  
 
Common Stock   8/3/2010     S    24609   D $34.32   82432   D  
 
Common Stock   8/3/2010     F    1641   D $34.46   80791   D  
 
Common Stock   8/3/2010     M    20850   A $30.70   101641   D  
 
Common Stock   8/3/2010     S    19577   D $34.35   82064   (1) D  
 
Common Stock                  18403   I   401(k)  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
Employee Stock Option (right to buy)   $24.14   8/3/2010     M         15000    4/20/2005   (2) 4/20/2014   Common Stock   15000   $0   0   D  
 
Employee Stock Option (right to buy)   $25.21   8/3/2010     M         30000    1/31/2006   (3) 1/31/2015   Common Stoock   30000   $0   0   D  
 
Employee Stock Option (right to buy)   $30.93   8/3/2010     M         30000    2/6/2007   (4) 2/6/2016   Common Stock   30000   $0   0   D  
 
Employee Stock Option (right to buy)   $29.23   8/3/2010     M         26250    2/5/2008   (5) 2/5/2017   Common Stock   26250   $0   8750   D  
 
Employee Stock Option (right to buy)   $30.70   8/3/2010     M         20850    2/4/2009   (6) 2/4/2018   Common Stock   20850   $0   20850   D  
 

Explanation of Responses:
(1)  Total includes 142 shares received through dividend reinvestment in 2010.
(2)  30,000 shares granted on 4/20/2004 (previously reported on a Form 4) vested in 25% increments per year.
(3)  30,000 shares granted on 1/31/2005 (previously reported on a Form 4) vest in 25% increments per year.
(4)  30,000 shares granted on 2/6/2006 (previously reported on a Form 4) vest in 25% increments per year.
(5)  35,000 shares granted on 2/5/2007 (previously reported on a Form 4) vest in 25% increments per year.
(6)  41,700 shares granted on 2/4/2008 (previously reported on a Form 4) vest in 25% increments per year.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
ARNOLD MICHAEL C
1835 DUEBER AVE. S. W.
CANTON, OH 44706

ExVP Brngs & Pwr Transmission

Signatures
Scott A. Scherff - Attorney in Fact 8/5/2010
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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