RBC · CIK 1324948
What RBC Bearings Incorporated told the SEC could break it.
RBC Bearings' disclosures center on its input costs: its principal raw materials are steel and cast iron, bought at fluctuating market prices from suppliers in the U.S., Europe, and Asia, and it already pays import tariffs on the materials it sources outside the U.S. — so further tariff or commodity-price moves feed straight into its costs. Alongside that, its revenue carries some customer concentration, with its single largest customer accounting for as much as roughly 13% of net sales in fiscal 2026 (and 18% and 17% in the two prior years).
3 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Commodity & input dependence
- steel and cast ironmedium
RBC Bearings' principal raw materials are steel and cast iron (sourced from the US, Europe and Asia), purchased at fluctuating market prices; it attempts to offset inflation via buying patterns, vendor expansion and price pass-through.
“Our principal raw materials are steel and cast iron. Our suppliers and sources of raw materials are based in the U.S., Europe and Asia. We purchase steel at market prices, which fluctuate as a result of supply and demand driven by economic conditions in the marketplace, and we currently pay import tariffs on our raw materials sourced outside the U.S.”
Customer concentration
- largest customer (up to ~13% of net sales)medium
RBC's single largest customer was up to ~13% of net sales in fiscal 2026 (and 18%/17% in fiscal 2025/2024), concentrating some revenue despite a broad OEM/distributor base.
“No one customer accounted for more than 13 % of the Company's net sales in fiscal 2026, 18 % of net sales in fiscal 2025 and 17 % of net sales in fiscal 2024.”
SEC filing →As of 2026
Regulatory & policy
- import tariffs on raw materialsmedium
RBC currently pays import tariffs on raw materials sourced outside the US; tariff changes could further raise its steel/cast-iron and component input costs.
“We purchase steel at market prices, which fluctuate as a result of supply and demand driven by economic conditions in the marketplace, and we currently pay import tariffs on our raw materials sourced outside the U.S.”
The hidden graph
Who it depends on, and who depends on it.
Relationships surfaced from filings, including ones disclosed by the other side, which is how the non-obvious ones come to light.
Its customers
Komatsu Ltd.
“Our largest industrial customers include Caterpillar, Komatsu and Halliburton and various aftermarket distributors including Motion Industries, Applied Industrial, Baldwin Supply, BDI and Purvis Industries.”
Cited →“Our largest industrial customers include Caterpillar, Komatsu and Halliburton and various aftermarket distributors including Motion Industries, Applied Industrial, Baldwin Supply, BDI and Purvis Industries.”
Cited →“Our largest industrial customers include Caterpillar, Komatsu and Halliburton and various aftermarket distributors including Motion Industries, Applied Industrial, Baldwin Supply, BDI and Purvis Industries.”
Cited →
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