PROSPECTUS SUPPLEMENT NO. 5

                                  $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 6, 2001, July 2, 2001, July
18, 2001 and August 30, 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 table of Selling Securityholders contained on page 53 of the
prospectus is hereby amended to add the entities who are named below as
selling securityholders.





                                                     AGGREGATE PRINCIPAL     PERCENTAGE OF       NUMBER OF       PERCENTAGE OF
                                                    AMOUNT AT MATURITY OF        LYONS         COMMON SHARES     COMMON SHARES
                        NAME                       LYONS THAT MAY BE SOLD     OUTSTANDING   THAT MAY BE SOLD(1)  OUTSTANDING(2)
    -------------------------------------------   ------------------------  --------------  -------------------  --------------

                                                                                                          
    Nations Convertible Securities Fund.......    $   9,500,000                   *               45,710              *
    J.P. Morgan Securities Inc................    $   5,000,000                   *               24,058              *
    Forest Global Convertible Fund............    $   3,710,000                   *               17,851              *
    Pacific Life Insurance Company............    $   1,000,000                   *                4,811              *
    Forest Fulcrum Fund LP....................    $     625,000                   *                3,007              *
    Convertible Securities Fund...............    $     380,000                   *                1,828              *
    Sylvan IMA LTD c/o Forest Investment
    Management LLC............................    $     300,000                   *                1,443              *
    LLT LTD c/o Forest Investment Management LLC  $     200,000                   *                  962              *
    Zurich HFR Master Hedge Fund c/o Forest
    Investment Management LLC.................    $     100,000                   *                  481              *
    Forest Alternative Strategies Fund II LP..    $      50,000                   *                  240              *
    RBC Capital Service c/o Forest Investment
    Management LLC............................    $      15,000                   *                   72              *



     Additionally, the following represents updated information regarding
the selling securityholders listed in the Selling Securityholders table in
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     OUTSTANDING   THAT MAY BE SOLD(1) OUTSTANDING(2)
    -------------------------------------------   ------------------------  --------------  ------------------- --------------
                                                                                                         
    All other holders of LYONs or future
      transferees, pledges, donees, assignees or
      successors of any such holders (3) (4)..          $  78,131,000            7.85%           375,935             *
                                                        -------------            ----            -------             -
    Total.....................................          $  994,750,000(5)        100%           4,786,339            10.67%


----------

 * Less than one percent (1%).

(1)  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.

(2)  Calculated based on Rule 13d-3(d)(i) of the Exchange Act, using
     40,075,136 common shares outstanding as of September 21, 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.

(3)  Information about other selling securityholders will be set forth in
     prospectus supplements, if required.

(4)  Assumes that any other holders of LYONs, or any future pledgees,
     donees, assignees, transferees or successors of or from any such other
     holders of LYONs, do not beneficially own any common shares other than
     the common shares issuable upon conversion of the LYONs at the initial
     conversion rate.

(5)  Includes $895,739,000 aggregate principal amount at maturity of LYONs
     that may be sold by other selling securityholders listed in the
     Selling Securityholders table in the prospectus and the supplements
     dated June 6, 2001, July 2, 2001, July 18, 2001 and August 30, 2001.


     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 October 11, 2001.

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