TIMKEN CO — Director's Dealing 2012

May 10, 2012

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: TIMKEN CO (TKR)
CIK: 0000098362
Period of Report: 2012-05-08

Reporting Person: Walker Donald L (Sr. VP - HR and OA)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	19199	Direct
Common Stock (restricted)	3250	Direct
Common Stock	5424	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee stock options - right to buy	$0	2019-02-02	Common Stock (3550)		Direct
Employee stock options - right to buy	$0	2020-02-08	Common Stock (7200)		Direct
Employee stock options - right to buy	$0	2021-02-08	Common Stock (8300)		Direct
Employee stock options - right to buy	$0	2022-02-09	Common Stock (7300)		Direct
Dividend Equivalent Rights	$0	2012-12-31	Common Stock (16)		Direct
Performance Based-Restricted Stock Units	$	2014-12-31	Common Stock (4400)		Direct

Footnotes

F1: Grant of restricted shares in 2010 and 2011subject to vesting in 25 percent annual increments from date of grant.

F2: The option became exercisable in annual 25 percent increments beginning on 02/02/2010.

F3: The option became exercisable in annual 25 percent increments beginning on 02/08/2011.

F4: The option became exercisable in annual 25 percent increments beginning on 02/8/2012.

F5: The option becomes exercisable in annual 25 percent increments beginning on 02/09/2013.

F6: Reflects the accrual of contingent rights to receive shares of common stock which vest on 12/31/12 or under certain specified circumstances.

F7: Performance based restricted stock units are subject to certain performance criteria between 1/1/2012 and 12/31/2014 and if the criteria is met then they fully vest 3 years therefrom.