Free tool
Bearing catalog checker.
Map your columns and get a deterministic structural report: missing identifiers, invalid or unit-ambiguous numbers, formula-like text and duplicate candidates. Download it as a flat CSV.
Available · runs locally
1 · Load a CSV
Processed in this browser tab — not uploadedDrop a .csv file here or choose one
Up to 10 MB and 10,000 data rows. UTF-8 expected.
Or paste rows
2 · Map your columns
We guessed from header names — check each one.3 · Report
What this is: a structural check of the file you loaded. It does not look up sources, confirm that a designation exists, judge whether a field applies to a family, or approve substitutes. “Duplicate candidates” share a manufacturer and normalized full designation; they still need review, and nothing is merged.
Field input completeness
Duplicate candidate groups
Rows
What it checks
The checks, in full
Deterministic rules only, the same result every time for the same file.
| Check | Rule | Needs attention? |
|---|---|---|
| Required identifiers | Mapped manufacturer, designation and family cells must not be empty. | Yes |
| Numbers | Values must parse as numbers; decimal commas are accepted and noted. | Yes if invalid or ≤ 0 |
| Units | Units written inside cells are noted; a unit that contradicts the column unit is flagged. | Yes if contradictory |
| Duplicate candidates | Same manufacturer + same full designation after removing spaces, dashes, dots and slashes. Suffixes are kept. | Note; yes if numeric values conflict |
| Formula-like text | Cells starting with = + - @ that are not plain numbers. Exported with a leading apostrophe so they cannot execute. | Yes |
| Short rows | Rows with fewer cells than the header. | Yes |
Next steps
After the check
Is my file uploaded anywhere?
No. The file is read by JavaScript in this tab and processed in memory. There is no upload request and no analytics on its contents. Closing the tab discards it.
Why does it not tell me if a value is correct?
Correctness needs sources and family-specific applicability rules. This tool checks structure only. Source-backed checks are part of a scoped assessment.
What file formats work?
CSV or similar delimited text (comma, semicolon, tab or pipe) in UTF-8, up to 10 MB and 10,000 data rows. Export Excel sheets as “CSV UTF-8” first.
Why are DEMO-101-OPEN and DEMO-101-SEALED not duplicates?
Because suffixes are part of the full designation. The comparison removes only formatting characters, never letters or digits.
Found more than structure can fix?
Let’s talk about the evidence.
The checker shows structural gaps. Filling them with sourced values, resolving duplicates and mapping families is what a scoped assessment covers.