LUFKIN, Texas, Jul. 1 --

Lufkin Industries, Inc. (Nasdaq: LUFK) today announced that it plans to release its 2004 second quarter financial results before opening of trading on Wednesday, July 21, 2004. The same morning at 9:00 a.m. (central time), the Company will hold a conference call to discuss its 2004 second quarter results. To listen to the call, participants should dial (913) 981-5508 approximately 10 minutes prior to the start of the call. A telephonic replay will be available from 11:00 a.m. (central time) July 21, 2004, through 7:00 p.m. (central time) July 28, 2004, by dialing (719) 457-0820 and entering reservation number 401818.

Lufkin Industries, Inc. sells and services power transmission products, oil field pumping units, foundry castings and highway trailers throughout the world. The Company has vertically integrated all vital technologies required to design, manufacture and market its products.

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Contact:

Lufkin Industries Inc., Lufkin
R.D. Leslie, 936/637-5325