About TRAK Machine Tools - Southwestern Industries

Since 1963, Southwestern Industries, Inc., now known as TRAK Machine Tools - Southwestern Industries, Inc., has been a pioneer in innovative products enhancing machinist productivity.

Continuing our tradition of excellence, we provide cutting-edge technology for both toolroom and production machining environments. Our engineering, manufacturing, and corporate headquarters are located in a 130,000 sq. ft. facility in Southern California, supported by a network of factory-direct sales, service, and management personnel across North America.

In 2021, we further expanded our capabilities with a new 120,000 sq. ft. manufacturing facility in Henderson, Nevada.

SWI — A History of Innovation

Founded in 1951 by former Lockheed engineer Dr. Fred Jenks, SWI was originally located in a facility on the border between the present-day cities of Culver City and Inglewood, CA. Established as a job shop, the company's primary focus was the development and manufacture of mechanically actuated electrical pressure switches to control fuel flow for Atlas and Delta missiles as well as actuators for the U-2 and SR-71 spy planes.

The Trav-A-Dial

Dr. Jenks bought the design rights to the Trav-A-Dial in 1962. Although the idea behind the design was right, the original version of the product did not meet expectations. In order to address this issue, Dr. Jenks assigned Trav-A-Dial re-design responsibilities to Irv Culver, the legendary Lockheed Skunkworks engineer who had recently left Lockheed to join SWI. Irv’s redesign resulted in what could arguably be called the most universally used machine tool measurement device of the 1960’s, 1970’s, and 1980’s.


SWI developed and manufactured a conversational language CNC for knee mills in the early 1980’s under the brand name ProtoTRAK. Later in that decade SWI manufactured and sold a version of the ProtoTRAK to Bridgeport Machines who distributed it under the EZTRAK® brand name. These extremely successful products helped launched the “age of conversational language” computer numerical controls.

Facility Move

In 1990, SWI found it necessary to move to a larger facility in order to accommodate its growing business. This move to its current headquarters in Rancho Dominguez, CA placed SWI just 15 minutes from both the Los Angeles Harbor and Los Angeles International Airport.

TRAK® Toolroom Mills, Lathes and ProtoTRAK Controls

All ProtoTRAK controls utilize conversational language programs as well as CAM and G-code. They are available on TRAK branded toolroom mills and toolroom lathes and can be retrofitted on other manufacturers' knee mills. All controls are designed and built “from scratch” at SWI's Rancho Dominguez, CA factory headquarters. The ProtoTRAKs are among the most widely used conversational language CNCs in the world. Both the controls and machines are designed specifically to address the inefficiencies associated with one-off and small lot machining.

Machines for High-Mix, Low Volume Shops

TRAK Machine Tools expanded its product lines to include machines that address the inefficiencies associated with high-mix, low-volume type work. These products consist of the TRAK LPM Vertical Machining Center and TRAK 2OP Portable Vertical Machining Center. The former is the first VMC that integrated the machine, control, fixturing and tool offset measurements into one complete system to reduce and/or eliminate product change-over times. The latter is a portable VMC that makes it possible and practical for high-mix, low-volume shops to utilize work cell technology to lower their part cycle times and reduce labor costs/part.

TRAK Toolroom Machining Centers

The World's First Toolroom Machining Center

On March 2, 2020 TMT debuted the first ever vertical machining center built to handle both toolroom and production operations. The TRAK Toolroom Machining Center is a fully-enclosed, 3 axis machining center that features the advanced ProtoTRAK RMX CNC.


Production Machines as only TRAK Machine Tools Would

October 4, 2021 marked launch of the TRAK VMCsi machining centers featuring the SINUMERIK ONE CNC. Through a partnership with Siemens, TMT has developed an outstanding machine and platform that will provide immediate value to customers And, the machines are packed with features for production, standard.


Introducing the TC820si Turning Center, the latest addition to TRAK Machine Tools' production lineup. The TC820si stands out with its advanced Siemens SINUMERIK ONE CNC control and high-efficiency features, ensuring precise and reliable operations for a wide range of applications. The TC820si is engineered to deliver superior performance and productivity, making it an indispensable asset for any modern shop.

TRAK Machine Tools - Southwestern Industries Factory Headquarters
TRAK Factory Showroom & Headquarters, Rancho Dominguez, CA

TRAK Machine Tools Field Service Technicians
TRAK Field Service Technicians
The most advanced ProtoTRAK contols
The latest, most advanced ProtoTRAK control ever: the ProtoTRAK RX Series. Shown with other current models - the ProtoTRAK KMX and the ProtoTRAK ELX.
The original ProtoTRAK - 1985
The original ProtoTRAK was introduced in 1985. This chrome version commemorates the 1,000th production unit.

See machines featuring the ProtoTRAK CNC