| CALCULATION OF REGISTRATION FEE                                                                   |
|---------------------------------------------------------------------------------------------------|
| Title of Each Class of Securities Offered                                                         | Maximum Aggregate Offering Price (1) | Amount of Registration Fee(2) |
| MEDIUM-TERM NOTES, SERIES G, 1.75% NOTES DUE 2017                                                 | $275,000,000 | $31,515 |
| (1) Excludes accrued interest, if any.                                                            |   |   |
| (2) The filing fee is calculated in accordance with Rule 457(r) under the Securities Act of 1933. |

| PRICING SUPPLEMENT NO. 9                          |   | Filed Pursuant to Rule 424(b)(2) |
|---------------------------------------------------|--------|----------------------------------|
| Dated March 21, 2012 to                           |   | Registration No. 333-173364      |
| PROSPECTUS SUPPLEMENT                             |   |                             |
| Dated April 7, 2011 and                           |   |                             |
| PROSPECTUS                                        |   |                             |
| Dated April 7, 2011                               |   |                             |
| CATERPILLAR FINANCIAL SERVICES CORPORATION        |
| MEDIUM-TERM NOTES, SERIES G, 1.75% NOTES DUE 2017 |

| SUBJECT                                                                                                                                                                                                                                                                                                                                                                                   |   | FINAL PRICING DETAILS                                                                                                                                                                                   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                                                                                                                                                                                                                                                      |   |                                                                                                                                                                                                    |
| Issuer:                                                                                                                                                                                                                                                                                                                                                                                   |   | Caterpillar Financial Services Corporation                                                                                                                                                              |
| Title of Securities:                                                                                                                                                                                                                                                                                                                                                                      |   | Medium-Term Notes, Series G, 1.75% Notes Due 2017                                                                                                                                                       |
| Format:                                                                                                                                                                                                                                                                                                                                                                                   |   | SEC Registered-Registration Statement Number 333-173364                                                                                                                                                 |
| Trade Date/Pricing Effective Time:                                                                                                                                                                                                                                                                                                                                                        |   | March 21, 2012                                                                                                                                                                                          |
| Settlement Date (Original Issue Date):                                                                                                                                                                                                                                                                                                                                                    |   | March 26, 2012                                                                                                                                                                                          |
| Maturity Date:                                                                                                                                                                                                                                                                                                                                                                            |   | March 24, 2017                                                                                                                                                                                          |
| Principal Amount:                                                                                                                                                                                                                                                                                                                                                                         |   | $275,000,000                                                                                                                                                                                            |
| Price to Public (Issue Price):                                                                                                                                                                                                                                                                                                                                                            |   | 99.819%                                                                                                                                                                                                 |
| Dealers' Commission:                                                                                                                                                                                                                                                                                                                                                                      |   | 0.35% (35 basis points) of the principal amount                                                                                                                                                         |
| All-in-price:                                                                                                                                                                                                                                                                                                                                                                             |   | 99.469%                                                                                                                                                                                                 |
| Net Proceeds to Issuer:                                                                                                                                                                                                                                                                                                                                                                   |   | $273,539,750                                                                                                                                                                                            |
| Coupon                                                                                                                                                                                                                                                                                                                                                                                    |   | 1.75%                                                                                                                                                                                                   |
| Yield to Maturity:                                                                                                                                                                                                                                                                                                                                                                        |   | 1.788%                                                                                                                                                                                                  |
| Spread Multiplier:                                                                                                                                                                                                                                                                                                                                                                        |   | N/A                                                                                                                                                                                                     |
| Spread/Spread Multiplier Reset Option:                                                                                                                                                                                                                                                                                                                                                    |   | N/A                                                                                                                                                                                                     |
| Optional Reset Dates (only applicable if option to reset spread or spread multiplier):                                                                                                                                                                                                                                                                                                    | N/A    |
| Basis for Interest Rate Reset (only applicable if option to reset spread or spread multiplier):                                                                                                                                                                                                                                                                                           | N/A    |
| Specified Currency:                                                                                                                                                                                                                                                                                                                                                                       |   | U.S. Dollars                                                                                                                                                                                            |
| Option to Elect Payment in U.S. Dollars  (only applicable if Specified Currency is other than U.S. Dollars):                                                                                                                                                                                                                                                                    | N/A    |
| Authorized Denominations (only applicable if Specified Currency is other than U.S. Dollars):                                                                                                                                                                                                                                                                                              | N/A    |
| Historical Exchange Rate (only applicable if Specified Currency is other than U.S. Dollars):                                                                                                                                                                                                                                                                                              | N/A    |
| Maximum Interest Rate:                                                                                                                                                                                                                                                                                                                                                                    |   | N/A                                                                                                                                                                                                     |
| Minimum Interest Rate:                                                                                                                                                                                                                                                                                                                                                                    |   | N/A                                                                                                                                                                                                     |
| Interest Payment Dates:                                                                                                                                                                                                                                                                                                                                                                   |   | Interest will be paid semi-annually on the 24th of March and September of each year, commencing September 24, 2012 and ending on the Maturity Date                                                      |
| Stated Maturity Extension Option:                                                                                                                                                                                                                                                                                                                                                         |   | N/A                                                                                                                                                                                                     |
| Extension Period(s) and Final Maturity Date (only applicable if option to extend stated maturity):                                                                                                                                                                                                                                                                                        | N/A    |
| Basis for Interest Rate During Extension Period (only applicable if option to extend stated maturity):                                                                                                                                                                                                                                                                                    | N/A    |
| Original Issue Discount Note:                                                                                                                                                                                                                                                                                                                                                             |   | N/A                                                                                                                                                                                                     |
| Total Amount of OID:                                                                                                                                                                                                                                                                                                                                                                      |   | N/A                                                                                                                                                                                                     |
| Terms of Amortizing Notes:                                                                                                                                                                                                                                                                                                                                                                |   | N/A                                                                                                                                                                                                     |
| Redemption Date(s):                                                                                                                                                                                                                                                                                                                                                                       |   | N/A                                                                                                                                                                                                     |
| Redemption Price:                                                                                                                                                                                                                                                                                                                                                                         |   | N/A                                                                                                                                                                                                     |
| Repayment Date(s):                                                                                                                                                                                                                                                                                                                                                                        |   | N/A                                                                                                                                                                                                     |
| Repayment Price(s):                                                                                                                                                                                                                                                                                                                                                                       |   | N/A                                                                                                                                                                                                     |
| Day Count Convention:                                                                                                                                                                                                                                                                                                                                                                     |   | 30/360                                                                                                                                                                                                  |
| Denominations:                                                                                                                                                                                                                                                                                                                                                                            |   | Minimum denominations of $1,000 with increments of $1,000 thereafter                                                                                                                                    |
| Joint Lead Managers & Bookrunners:                                                                                                                                                                                                                                                                                                                                                    |   | Barclays Capital Inc. (35.00%)                                                                                                                                                                          |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | Goldman, Sachs & Co. (35.00%)                                                                                                                                                                       |
| Co-Managers:                                                                                                                                                                                                                                                                                                                                                                              |   | BNP Paribas Securities Corp. (3.00%)                                                                                                                                                                    |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | BNY Mellon Capital Markets, LLC (3.00%)                                                                                                                                                                 |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | Commerz Markets LLC (3.00%)                                                                                                                                                                             |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | Deutsche Bank Securities Inc. (3.00%)                                                                                                                                                                   |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | HSBC Securities (USA) Inc.  (3.00%)                                                                                                                                                           |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | ING Financial Markets LLC (3.00%)                                                                                                                                                                       |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | Lloyds Securities Inc. (3.00%)                                                                                                                                                                          |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | Mitsubishi UFJ Securities (USA), Inc.  (3.00%)                                                                                                                                                |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | Standard Chartered Bank (3.00%)                                                                                                                                                                         |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | U.S. Bancorp Investments, Inc.  (3.00%)                                                                                                                                                       |
|                                                                                                                                                                                                                                                                                                                                                                                      |   | Standard Chartered Bank will not effect any offers or sales of any notes in the United States unless it is through one or more U.S. registered broker-dealers as permitted by the regulations of FINRA. |
| Billing and Delivery Agent:                                                                                                                                                                                                                                                                                                                                                               |   | Barclays Capital Inc.                                                                                                                                                                                   |
| Exchange Rate Agent:                                                                                                                                                                                                                                                                                                                                                                      |   | U.S. Bank Trust National Association                                                                                                                                                                    |
| Calculation Agent:                                                                                                                                                                                                                                                                                                                                                                        |   | U.S. Bank Trust National Association                                                                                                                                                                    |
| CUSIP:                                                                                                                                                                                                                                                                                                                                                                                    |   | 14912L5C1                                                                                                                                                                                               |
| Other Terms:                                                                                                                                                                                                                                                                                                                                                                              |   | N/A                                                                                                                                                                                                     |
|                                                                                                                                                                                                                                                                                                                                                                                      |   |                                                                                                                                                                                                    |
| CAPITALIZED TERMS USED HEREIN WHICH ARE DEFINED IN THE PROSPECTUS SUPPLEMENT SHALL HAVE THE MEANINGS ASCRIBED THERETO IN THE PROSPECTUS SUPPLEMENT. THE INTEREST RATES ON THE NOTES MAY BE CHANGED BY CATERPILLAR FINANCIAL SERVICES CORPORATION FROM TIME TO TIME, BUT ANY SUCH CHANGE WILL NOT AFFECT THE INTEREST RATE ON ANY NOTES OFFERED PRIOR TO THE EFFECTIVE DATE OF THE CHANGE. |