Specification summary of ISO 355 as applied to tapered roller bearing: the dimensions the standard fixes, the full size range supplied, and the related designations commonly cross-referenced.
ISO 355 — Scope
The table below lists the dimensions catalogued for tapered roller bearing — iso / din (series 116) under ISO 355. The scope of ISO 355 itself is not summarised here — where a figure matters, confirm it against the published document.
Tolerance & Product Grades
Product grade is a concept from dimensional fastener standards and does not apply to ISO 355. Tolerances for this part are the limits shown against each dimension in the table.
Dimensions Specified by ISO 355
| Bore d (mm) | Outer diameter D (mm) | Total width T (mm) | Cone angle (deg) | Dynamic load C (kN) | Reference standard |
|---|---|---|---|---|---|
| 20 | 47 | 15.25 | 15 | 30.0 | ISO 355 / GB/T 297 |
| 25 | 52 | 16.25 | 15 | 34.0 | ISO 355 / GB/T 297 |
| 30 | 62 | 17.25 | 15 | 49.5 | ISO 355 / GB/T 297 |
| 35 | 72 | 18.25 | 15 | 69.0 | ISO 355 / GB/T 297 |
| 40 | 80 | 19.75 | 15 | 81.5 | ISO 355 / GB/T 297 |
| 50 | 90 | 21.75 | 15 | 93.0 | ISO 355 / GB/T 297 |
| 60 | 110 | 23.75 | 15 | 142 | ISO 355 / GB/T 297 |
| 80 | 140 | 28.25 | 15 | 224 | ISO 355 / GB/T 297 |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Tapered Roller Bearing — ISO / DIN (Series 116) page.
Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
Companion Standards
A complete specification for tapered roller bearing — iso / din (series 116) normally cites several documents: one for the geometry, one for the material or mechanical properties, and one for the finish. ISO 355 is one of them, not all of them.
Custom manufacturing · Made to drawing
Need a bearing & bushing to this standard in a non-standard size?
Parts built to ISO 355 are already in the catalog, so a special is usually a variation on existing tooling rather than a new design — which is what keeps the cost down.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
