SIC 3568 Mechanical Power Transmission Equipment, Not Elsewhere Classified

SIC 3568

The Mechanical Power Transmission Equipment, Not Elsewhere Classified industry is comprised of companies that manufacture mechanical power transmission equipment and parts for industrial machinery. Products include ball joints, pulleys, bearings, drive chains, sprockets, shafts, couplings, and other parts. Companies that make transmission devices for vehicles and aircraft are classified in SIC 3714: Motor Vehicle Parts and Accessories and SIC 3728: Aircraft Parts and Auxiliary Equipment, Not Elsewhere Classified, respectively.

NAICS CODE(S)

333613

Mechanical Power Transmission Equipment Manufacturing

According to the U.S. Census Bureau, 238 establishments operated in this category for part or all of 2004. Industry-wide employment totaled approximately 15,912 workers receiving a payroll of more than $705 million. Companies in this industry tended to be smaller to medium in size with about 77 percent employing less than 500 workers. The Annual Survey of Manufactures reported that overall shipments for the industry were valued at nearly $2.84 billion in 2005. Additionally, for the industry a total of 10,525 employees worked in production in 2004, putting in more than 21 million hours to earn wages of more than $404 million.

In 2005 the industry leader was Neapco LLC of Pottstown, Pennsylvania, with sales of nearly $7.6 billion and 525 employees. In second place was Perfection Clutch of Timmonsville, South Carolina, with nearly $6.6 billion in 2005 sales and 155 employees. Rockwell Automation Inc. of Milwaukee, Wisconsin, rounded out the top three with 2005 sales of nearly $5.6 billion and 21,000 employees.

The product share of this classification is divided into two categories: plain bearings and bushings and mechanical power transmission equipment (excluding speed changers, drives, and gears), with the latter leading the industry with about 80 percent of shipment values in 2002.

Power transmission refers to the transfer of power through mechanical devices. The invention of the steam engine by James Watt in 1765 and the development of the internal combustion engine during the mid-1800s greatly expanded applications for power transmission equipment and played an important role in the industrial revolution. The industry realized its greatest growth during the U.S. economic expansion of the post-World War II era. Indeed, by the early 1980s makers of miscellaneous transmission equipment were...

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