Conveyor and Conveying Equipment Manufacturing (U.S.) — NAICS 333922

1. Overview

Conveyors are the machines that move things from one point to another inside a facility without a person carrying them: belts, rollers, screws, buckets, overhead trolleys, pneumatic tubes, and the powered sortation lines that route packages through a warehouse. NAICS 333922 covers the U.S. establishments that manufacture this equipment — from the components (belting, rollers, chain, drives) up to complete systems.[3]

Why an investor cares: conveying equipment is the physical backbone of e-commerce fulfillment, airport baggage handling, food and beverage processing, automotive assembly, and mining. It is a capital-goods, cyclical business — orders rise and fall with customers' willingness to spend on plant and warehouse expansion — with a large, higher-margin aftermarket (parts and service) underneath. Demand has been reshaped over the last decade by warehouse automation and the labor economics of moving product faster with fewer people.

Public vs. private ways in: there is no large, U.S.-listed pure-play conveyor manufacturer. Public exposure comes mainly through diversified industrials and foreign-listed intralogistics giants (Columbus McKinnon, KION/Dematic, Daifuku, Interroll). Much of the industry's most focused capacity — including the largest U.S.-domestic conveyor maker — is privately held or private-equity-owned, so the deepest exposure is reached through private markets, not the stock market. Recent transactions have reinforced this tilt: Honeywell sold Intelligrated to private equity in July 2026,[18] and Toyota Industries — parent of Vanderlande and Bastian — delisted in June 2026.[19][20]

2. What it is and how it's structured

In scope (333922): establishments primarily making conveyors and conveying equipment — gravity, belt, roller, screw, trolley, tow, pneumatic-tube, carousel, overhead, and bucket conveyors; farm conveyors and farm/mine elevators; and the individual components (belts, screws, buckets) that feed conveying systems.[3]

Explicitly excluded (these are adjacent NAICS codes, not this one):[3]

• Passenger/freight elevators, dumbwaiters, moving stairways (escalators) — NAICS 333921, Elevator and Moving Stairway Manufacturing.
• Overhead traveling cranes, hoists, and monorail systems — NAICS 333923.
• Industrial trucks, forklifts, and stacker machinery — NAICS 333924.
• Conveyor belting made of rubber (as a rubber product) can fall under rubber-products manufacturing rather than here; heavy bulk belting is often supplied by tire/rubber conglomerates.

Ownership mix. The industry is a fragmented mix of many mid-sized specialists rather than a few dominant national factories. It spans (a) component and belting makers, (b) standard-conveyor manufacturers who sell through integrators and distributors, and (c) full-system suppliers who engineer, build, and install turnkey material-handling lines. Ownership runs the gamut: a couple of U.S.-listed names, several large foreign-listed parents (Japan, Germany, Switzerland), and a deep bench of family-owned and private-equity-owned firms. That fragmentation is confirmed by the federal concentration data below.

3. How big it is (federal figures)

Ground-truth U.S. Census figures for NAICS 333922:

Concentration — this is a fragmented industry. The largest four firms account for just 10.9% of receipts (CR4), the top eight 19.4% (CR8), the top 20 33% (CR20), and the top 50 49.7% (CR50); the Herfindahl-Hirschman Index (a standard concentration gauge, where anything under ~1,500 is "unconcentrated") is only 77.5.[2] By that measure, no single manufacturer comes close to controlling the U.S. market — it takes 50 firms to reach half of shipments.

For reference, the U.S. Small Business Administration's size standard for this industry is 500 employees, meaning the great majority of the 734 firms qualify as small businesses.[4]

The undercount / mismatch caveat. These are factory-output statistics for U.S.-based establishments, and they understate the money that flows through conveying systems in the U.S. economy for three reasons:

• Imports. A large share of belting, rollers, and even complete systems bought in the U.S. is imported; domestic shipments (~$14 billion) are not the same as U.S. demand.
• Embedded in bigger projects. When a conveyor is delivered as part of a turnkey warehouse-automation or airport project, much of the value (engineering, controls, software, robotics, installation) is classified under other codes — automation integrators, software, and construction — not 333922. The big intralogistics players (Dematic, Intelligrated, Daifuku, Vanderlande) book revenue well beyond what this manufacturing code captures.
• Scope vs. private estimates. Private market-research houses put the U.S. "conveying equipment" market anywhere from roughly $9 billion (2023) to figures that use a much broader global scope; those numbers use different definitions and should not be read against the federal receipts figure one-for-one.[5][6]

This is not an industry that is badly undercounted by government-vs-private ownership (it is genuinely private, taxpaying manufacturing) or dominated by tiny sole proprietors — the average firm does ~$19 million in receipts.[2] The real gap is imports plus revenue that migrates to adjacent codes when conveyors are sold inside larger automation systems.

4. The investable universe

There is no large U.S.-listed pure-play. The cleanest public exposure is a Swiss components maker (Interroll); the largest exposures are diversified industrials and foreign intralogistics parents where conveying is one line of business. Recent ownership changes have narrowed the listed options: Honeywell sold Intelligrated to private equity in July 2026,[18] and Toyota Industries — parent of Vanderlande and Bastian — delisted in June 2026.[19][20] Tickers, exchanges, and scale below are for orientation, not recommendations.

Public companies with meaningful conveyor exposure

Note: exposure through Regal Rexnord, KION, and Continental is diluted — conveyors are a fraction of each. Interroll and (increasingly) Columbus McKinnon offer the most concentrated listed exposure. Honeywell is no longer an exposure route following the Intelligrated sale.[18] Toyota Industries delisted from the Tokyo Stock Exchange effective June 1, 2026, removing direct access to Vanderlande and Bastian.[19][20]

Major private / other owners (where much of the focused capacity sits)

5. How the money works

Owners in this industry make money three ways, and the mix determines the quality of the business:

• Project (capital-equipment) sales. The headline revenue: a customer orders a conveyor line or a full sortation system. These are lot-sized, engineered orders with long lead times, so the leading indicators are orders/bookings, backlog, and book-to-bill (orders ÷ shipments; above 1.0 means backlog is building). Columbus McKinnon, for example, reported record fiscal-2025 orders of $1.0 billion and a backlog of $322.5 million, up 15%, with precision-conveyance orders up 19% — a read on demand that leads reported sales by quarters.[11] KION's Supply Chain Solutions order intake surged 39.5% in 2025 after weak prior-year demand, illustrating how large automation awards can move discontinuously.[23]
• Aftermarket parts and service. Once a line is installed it needs belts, rollers, motors, controls, and maintenance for years. Aftermarket revenue is recurring, less cyclical, and higher-margin than new equipment, and it is what smooths earnings through a downturn. A large installed base is the moat. KION's Supply Chain Solutions derives 41% of external revenue from service;[22] Interroll, more component-oriented, derives 15.2%.[24]
• Components vs. systems. Component and belting makers (Interroll, Intralox, Regal Rexnord, Continental) sell higher-volume, catalog-style products; full-system integrators (Dematic, Intelligrated, Daifuku) sell fewer, larger, more engineering-heavy projects. Component businesses tend to have steadier margins; systems businesses have lumpier revenue and more execution risk on fixed-price contracts. The margin difference can be material: Interroll posted a 14.0% EBIT margin on CHF514 million of 2025 sales, while KION's larger project-oriented Supply Chain Solutions segment ran at 6.0% adjusted EBIT on €3.1 billion.[22][24]

Unit economics and the metrics that matter for a manufacturer here:

• Capacity utilization — factory throughput vs. capacity; fixed-cost absorption drives margins.
• Input costs — steel, aluminum, rubber/plastic belting, electric motors, bearings, and increasingly electronics/controls. Margins compress when steel and motor prices spike faster than they can be passed through.
• Gross and operating margin, and the aftermarket mix — the single biggest quality signal is how much revenue is recurring service/parts vs. one-time projects.
• Working capital and contract terms — long projects tie up cash in inventory and work-in-process; milestone billing and deposits matter.
• Cyclicality — sales track customers' capital spending (retail/logistics capex, mining capex, airline traffic, auto plant retooling), so the business is early-cyclical and sensitive to interest rates and confidence. Interroll's 2025 sales declined 2.5% even as order intake rose 5.0%, showing the lag between customer commitments and recognized revenue.[24]

For a private owner, returns come from steady cash generation, the annuity-like aftermarket, and — very commonly here — buy-and-build M&A, rolling up niche conveyor brands to add product lines and cross-sell service (Duravant and Columbus McKinnon are textbook examples).

6. What drives demand

• Warehouse automation and e-commerce. The dominant secular driver. Fast, low-cost fulfillment pushes retailers and logistics firms to install sortation, high-speed conveyors, and automated storage. Amazon alone passed 1 million deployed warehouse robots across 300+ facilities in 2025, anchoring a broad build-out that pulls conveyor and sortation demand with it; parcel-automation capex, after a post-pandemic pause, is expected to reaccelerate at double-digit rates from 2026.[9][10]
• Labor cost and availability. Conveyors substitute capital for scarce, expensive warehouse and plant labor — the core payback case for automation.
• Food and beverage. The largest single end-market for belting, with hygiene and washdown requirements driving demand for modular plastic belts; food/beverage plants were roughly 27% of the conveyor market in 2025.[17][8]
• Airports. Baggage-handling systems are among the fastest-growing niches (mid-single-digit-plus growth), tied to passenger-traffic recovery and new-terminal projects.[8]
• Mining and bulk handling. Heavy-duty belt conveyors move ore and aggregate; demand follows commodity capex cycles, with a newer push toward energy-efficient and regenerative drives.[8]
• Automotive and manufacturing. Assembly-line conveyance, now including EV-battery handling, follows plant retooling and reshoring investment.[8]
• Reshoring and new domestic plants. U.S. factory construction and supply-chain regionalization add greenfield conveyor demand.

7. Regulation

Conveyor manufacturing is not licensed or price-regulated; the binding rules are safety and design standards:

• ASME/ANSI B20.1 — Safety Standard for Conveyors and Related Equipment is the definitive U.S. safety standard, covering design, construction, installation, operation, guarding, and maintenance. Critically, it is incorporated by reference into OSHA regulations (29 CFR 1910 and 1926), so in the effective absence of a standalone OSHA conveyor rule, B20.1 is the de facto compliance benchmark.[14]
• OSHA enforces workplace safety around conveyor operation. The general machine-guarding rule (29 CFR 1910.212) requires protection against nip points and rotating parts.[25] For construction-site conveyors, 29 CFR 1926.555 mandates stopping controls, start-up warnings, emergency-stop resets, guarding, and lockout/tagout procedures.[26] Conveyor pinch-points and nip hazards are a recurring source of injury litigation, which keeps guarding and design standards commercially important.
• CEMA (Conveyor Equipment Manufacturers Association) publishes industry best practices and standardized component specifications, and defers to ASME/OSHA for the formal safety standard.[15]
• Adjacent requirements: food-contact and sanitation standards (FDA/USDA, and third-party hygienic-design norms) for food-and-beverage belting; general product-liability exposure; and, for imported equipment and steel inputs, tariffs and trade policy that move input costs.

8. Competitive dynamics and consolidation

The federal data show a fragmented industry (CR4 of 10.9%, HHI of 77.5),[2] but it is fragmenting less over time as two forces push consolidation:

• Roll-ups by public and PE owners. Columbus McKinnon bought Dorner ($485M, 2021) and then completed a much larger combination with Kito Crosby in February 2026 — a deal that cleared 14 regulatory reviews and required a DOJ-mandated divestiture of its U.S. power-chain-hoist operations, a sign that antitrust scrutiny now bites in material handling.[12][13] Duravant, Warburg Pincus-backed, has assembled a portfolio of conveying and processing brands. American Industrial Partners combined Intelligrated, Trew, and Transnorm following the Honeywell divestiture in July 2026, creating a >$1 billion revenue private platform.[18]
• Systems integrators absorbing conveyor content. As buyers want turnkey automation, the value migrates to a handful of large integrators (Dematic/KION, Intelligrated, Daifuku, Vanderlande, TGW, BEUMER), which the private market-research houses estimate collectively hold on the order of 40–50% of the global conveyor-system market, led by Daifuku (~13–15%).[7] These players compete on software, controls, and installed-base service as much as on hardware.

Underneath the integrators, hundreds of specialists — Hytrol, Intralox, Interroll, Regal Rexnord components — win on niche depth, lead time, and distribution/integration-partner networks rather than scale.

9. Risks

• Cyclicality. This is early-cyclical capital equipment; a pullback in retail/logistics, mining, or airline capex hits orders quickly. The 2023–24 digestion after the pandemic warehouse-build boom is a recent example.
• Customer concentration in warehouse automation. A handful of mega-buyers (Amazon and large 3PLs) can swing sortation/parcel demand with a single capex decision.[10]
• Input-cost and tariff exposure. Steel, aluminum, motors, and electronics drive the cost base; tariff shifts on imported steel, components, or finished equipment move margins and competitive position.
• Import competition. Foreign belting and standard conveyors compete on price against U.S. factory output.
• Execution risk on large fixed-price systems. Turnkey projects can suffer cost overruns, schedule slips, and warranty/liability exposure. KION's auditor flags percentage-of-completion revenue recognition as a complex judgment area where estimated costs may prove optimistic.[22]
• Technology and integration risk. Value is shifting from steel to software, controls, robotics, and AI-enabled monitoring; hardware-only makers risk commoditization if they can't move up the automation stack.
• Safety/liability. Conveyor injuries generate litigation; a design or guarding failure is both a human and a financial risk.[14][25][26]
• Limited listed exposure / dilution. For public investors, most exposure is either a small slice of a diversified industrial or a foreign listing with currency and disclosure differences. Recent ownership changes (Honeywell sale, Toyota Industries delisting) have further narrowed the listed routes.

10. How to invest and the outlook

Public routes. Because there is no large U.S.-listed pure-play, public investors choose between (a) the closest pure-play, Interroll (SIX Swiss: INRN), a rollers/modules/sorters specialist with a 14% EBIT margin;[24] (b) an increasingly conveyor-weighted U.S. name, Columbus McKinnon (Nasdaq: CMCO), now materially larger after the Kito Crosby combination;[13] or (c) foreign intralogistics parents — KION/Dematic (Frankfurt: KGX) and Daifuku (Tokyo: 6383). Components exposure comes through Regal Rexnord (NYSE: RRX) and Continental (Frankfurt: CON) for bulk belting. Honeywell is no longer an exposure route following the July 2026 sale of Intelligrated to American Industrial Partners,[18] and Toyota Industries is no longer publicly traded following its June 2026 delisting.[19][20] Tickers, share prices, dividends, and valuation multiples for the remaining names should be checked at the time of investing; only Interroll and CMCO give concentrated exposure.

Private routes. The deepest and most focused exposure is private: the largest North-American manufacturer (Hytrol) and the modular-belting leader (Intralox) are privately held, and much of the rest of the specialist field is family- or PE-owned. The AIP-backed Intelligrated/Trew/Transnorm platform is now a major private-market alternative with >$1 billion in revenue.[18] Private investors reach the industry through direct ownership, private-equity roll-up platforms (the Duravant and AIP models), supplier-base investments tied to warehouse-automation build-outs, or by backing regional integrators that install and service systems.

Near-term drivers (forward-looking). The demand setup looks constructive rather than booming: warehouse-automation and parcel capex is expected to reaccelerate from 2026 after a two-year digestion, food-and-beverage and airport baggage remain steady growth pockets, and reshoring adds greenfield plant demand.[8][9][10] The medium-term winners are likely to be the firms with the largest installed base and aftermarket service revenue and those that move up from steel into controls, software, and robotics integration — the parts of the value chain that are growing fastest and are hardest to commoditize. The main downside risks are a capex pullback if rates and confidence weaken, input-cost/tariff shocks, and the customer concentration that comes with serving a few very large automation buyers.

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Sources

1. U.S. Census Bureau, County Business Patterns 2023, NAICS 333922 (employment, establishments, payroll). 2023. https://www.census.gov/programs-surveys/cbp.html
2. U.S. Census Bureau, 2022 Economic Census — Concentration & receipts, NAICS 333922 (receipts, firm count, CR4/CR8/CR20/CR50, HHI). 2022. https://www.census.gov/programs-surveys/economic-census.html
3. U.S. Census Bureau / NAICS Association, NAICS 333922 — Conveyor and Conveying Equipment Manufacturing (definition, inclusions, exclusions). 2022. https://www.naics.com/naics-code-description/?code=333922
4. U.S. Small Business Administration, Table of Size Standards (NAICS 333922 — 500 employees). 2023. https://www.sba.gov/document/support-table-size-standards
5. Grand View Research, Conveying Equipment Market Size And Share Report. 2024. https://www.grandviewresearch.com/industry-analysis/conveying-equipment-market
6. GMInsights, Conveyor Belt / Conveyor System Market. 2025. https://www.gminsights.com/industry-analysis/conveyor-system-market
7. MarketsandMarkets, Conveyor System Market — worth $14.8 billion by 2030; leaders Daifuku, Vanderlande, Dematic, Continental, Interroll. 2024. https://www.marketsandmarkets.com/Market-Reports/conveyor-systems-market-31314058.html
8. Mordor Intelligence / Future Market Insights, Conveyors Market — end-market shares (food & beverage, airports, mining). 2025. https://www.mordorintelligence.com/industry-reports/conveyors-market
9. Honeywell, Top 5 Trends Driving Warehouse Automation in Retail & Distribution 2025. 2025. https://www.honeywell.com/us/en/news/featured-stories/2025/04/top-5-trends-warehouse-automation-retail-distribution-2025
10. Carbon6 / Amazon, Amazon surpasses 1 million deployed warehouse robots across 300+ facilities (2025). 2025. https://www.carbon6.io/blog/how-warehouse-automation-is-revolutionizing-amazon-logistics
11. Columbus McKinnon Corporation, Reports Record Orders in Fiscal 2025 (net sales $963M; orders $1.0B; backlog $322.5M; precision-conveyance orders +19%). 2025. https://www.prnewswire.com/news-releases/columbus-mckinnon-reports-record-orders-in-fiscal-2025-302466586.html
12. Columbus McKinnon Corporation, Completes Acquisition of Dorner Manufacturing ($485 million). 2021. https://www.businesswire.com/news/home/20210407005774/en/Columbus-McKinnon-Completes-Acquisition-of-Dorner-Manufacturing-Corporation
13. Columbus McKinnon Corporation, Completes Acquisition of Kito Crosby (closed February 2026; DOJ-mandated divestiture). 2026. https://www.prnewswire.com/news-releases/columbus-mckinnon-completes-acquisition-of-kito-crosby-302678766.html
14. ASME / The ANSI Blog, ASME B20.1-2024 — Safety Standard for Conveyors and Related Equipment (incorporated by reference into OSHA 29 CFR 1910/1926). 2024. https://blog.ansi.org/ansi/asme-b20-1-2024-safety-standard-conveyors/
15. Conveyor Equipment Manufacturers Association (CEMA), Safety Resources. 2024. https://cemanet.org/other-safety-resources/
16. Arkansas Business, Hytrol Conveyor Co. Inc. — largest conveyor manufacturer in North America (~$390M revenue; ~1,600 Arkansas employees). 2024. https://www.arkansasbusiness.com/article/business/hytrol-conveyor-co-inc/
17. Intralox / Wikipedia, Intralox (Laitram) — inventor and world leader in modular plastic conveyor belting. 2025. https://en.wikipedia.org/wiki/Intralox
18. Honeywell / American Industrial Partners, Honeywell Technologies Completes Sale of Warehouse and Workflow Solutions Business to American Industrial Partners (Intelligrated, Trew, Transnorm combined; >$1B 2025 revenue, ~3,700 employees). July 2026. https://www.honeywell.com/us/en/news/press-releases/2026/07/honeywell-technologies-completes-sale-of-warehouse-and-workflow-solutions-business-to-american-industrial-partners
19. Toyota Industries Corporation, Investor Notice — Transaction and Delisting. 2026. https://www.toyota-industries.com/investors/notice/
20. Japan Exchange Group, Delisting Decision — Toyota Industries Corporation (effective June 1, 2026). 2026. https://www.jpx.co.jp/english/news/1023/20260512-12.html
21. Columbus McKinnon Corporation, 2025 Form 10-K (Dorner, Garvey, montratec brand descriptions). 2025. https://www.sec.gov/Archives/edgar/data/1005229/000100522925000149/cmco-20250331.htm
22. KION Group, 2025 Annual Report — Supply Chain Solutions segment results (€3.07B revenue, €183.2M adj. EBIT, 6.0% margin, 41% service mix). 2025. https://www.kiongroup.com/KION-Website-Main/Investor-Relations/Reports-Presentations/2025-Reports-Presentations/FY-2025/2025-Q4_Annual_Report_KION_Group.pdf
23. KION Group, 2025 Annual Report — Segment Operating Review (Supply Chain Solutions order intake +39.5%). 2025. https://berichte.kiongroup.com/2025/gb/lagebericht/wirtschaftsbericht/ertrags-vermoegens-und-finanzlage/geschaefts-und-ertragslage-der-segmente.html
24. Interroll Holding AG, FY2025 Results (CHF514.2M sales, CHF71.8M EBIT, 14.0% margin, 15.2% services, sales −2.5%, orders +5.0%). March 2026. https://www.interroll.com/fileadmin/user_upload/2026_03_12_Interroll_Ad-hoc_FY25_Results_EN_final_version.pdf
25. U.S. Occupational Safety and Health Administration, 29 CFR 1910.212 — General Requirements for All Machines (machine guarding). https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.212
26. U.S. Occupational Safety and Health Administration, 29 CFR 1926.555 — Conveyors (construction safety). https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.555