332991

Analysis

NAICS 332991 is the 2022 national industry for ball and roller bearing manufacturing, part of 33299 (All Other Fabricated Metal Product Manufacturing). Census lists 13 example activities under it in the official index.

County Business Patterns counts 176 US establishments in this code in 2023, employing 18,800 people at an average annual payroll of $64,969 per employee (43rd percentile of national industries). 18% of the establishments have fewer than five employees, which points to larger operations.

Its index entries, the activities Census uses to assign businesses to this code, include annular ball bearings manufacturing, ball bearings manufacturing, bearings, ball and roller, manufacturing and cylindrical roller bearings manufacturing, among 13 in all.

Its goods appear in 68 statistical lines of the US tariff schedule, mostly under headings 8482 (ball or roller bearings, and parts thereof) and 8483 (transmission shafts (including camshafts and crankshafts)…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.

For example, manufacturing plain bearings are classified in 333613 (Mechanical Power Transmission Equipment Manufacturing) instead.

Census lists 1 related activities that belong elsewhere, most often in 333613. Businesses that do several things are classified by their primary activity, the one that generates the most value, so check those boundaries before settling on this code.