PROSPECTUS SUPPLEMENT NO. 7

                                                         $994,750,000
                                                       SPX CORPORATION
                                            LIQUID YIELD OPTION(TM) NOTES DUE 2021
                                                     (ZERO COUPON-SENIOR)
                                                             AND
                                                 COMMON SHARES ISSUABLE UPON
                                           CONVERSION AND/OR PURCHASE OF THE LYONS

     This prospectus supplement supplements the prospectus dated May 10, 2001 of SPX Corporation, as supplemented June 7,
2001, July 2, 2001, July 18, 2001, August 30, 2001, October 11, 2001 and October 23, 2001, relating to the sale by certain of
our securityholders (including their pledgees, donees, assignees, transferees, successors and others who later hold any of
our securityholders' interests) of up to $994,750,000 aggregate principal amount at maturity of LYONs and the common shares
issuable upon conversion, and/or purchase by us, of the LYONs. You should read this prospectus supplement in conjunction with
the prospectus, and this prospectus supplement is qualified by reference to the prospectus, except to the extent that the
information in this prospectus supplement supersedes the information contained in the prospectus. Capitalized terms used in
this prospectus supplement and not otherwise defined herein have the meanings specified in the prospectus.

     The following represents updated information regarding the selling securityholders listed in the selling securityholders
table contained on page 53 of the prospectus:




                                                     AGGREGATE PRINCIPAL     PERCENTAGE OF       NUMBER OF       PERCENTAGE OF
                                                    AMOUNT AT MATURITY OF        LYONS         COMMON SHARES     COMMON SHARES
                      NAME                         LYONS THAT MAY BE SOLD(1)  OUTSTANDING   THAT MAY BE SOLD(2)  OUTSTANDING(3)
  -------------------------------------------     ------------------------  --------------- ------------------- --------------
                                                                                                       
  Deutsche Banc Alex Brown Inc...............     $  284,415,000(*)            28.59          1,368,491            3.30

- ------------------------------------------------------------------------------------------------------------------------------



*    Reflects revised total position of the selling securityholder.

(1)  Amounts indicated may be in excess of the total amount registered due to sales or transfers exempt from the registration
     requirements of the Securities Act since the date upon which the selling securityholders provided to us the information
     regarding their LYONs.

(2)  Assumes conversion of all of the holder's LYONs at a conversion rate of 4.8116 common shares per $1,000 principal amount
     at maturity of the LYONs. This conversion rate is subject to adjustment, however, as described under "Description of the
     LYONs -- Conversion Rights." As a result, the number of common shares issuable upon conversion of the LYONs may increase
     or decrease in the future. Does not include common shares that may be issued by us upon purchase of LYONs by us at the
     option of the holder.

(3)  Calculated based on Rule 13d-3(d)(i) of the Exchange Act, using 40,420,975 common shares outstanding as of December 26,
     2001. In calculating this amount for each holder, we treated as outstanding the number of common shares issuable upon
     conversion of all of that holder's LYONs, but we did not assume conversion of any other holder's LYONs. Does not include
     common shares that may be issued by us upon purchase of LYONs by us at the option of the holder.



Investing in the LYONs involves risks that are described in the "Risk Factors" section beginning on page 8 of the prospectus.

Neither the Securities and Exchange Commission, any state securities commission nor any other regulatory body has approved or
disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary
is a criminal offense.

                                 The date of this prospectus supplement is January 10, 2002.

(TM)TRADEMARK OF MERRILL LYNCH & CO., INC.