6006 bearing: complete specifications & equivalents
The 6006 is a ISO 15 radial bearing sized 30 x 55 x 13 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 30 mm |
| Outer diameter D | 55 mm |
| Width B | 13 mm |
| Seal / shield | open |
| Internal clearance | CN / C3 available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Operating temperature | -40 to +150 °C |
| Mass (geometry estimate) | 111 g |
| Standard | ISO 15 |
| Catalog version | iso15-ed4-geometry |
| Last verified | 2026-09-23 |
Source: ISO 15 boundary-dimensions standard · extracted 2026-09-23
Standard-interchange bearing: dimensions per ISO 15; CN clearance, P0 tolerance and a stamped-steel cage are catalogue defaults unless the supplier states otherwise, and mass is a geometry-derived estimate. Brand catalogue load ratings and limiting speeds for 6006 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 6000-series range
| Bore d | 1.181 in |
|---|---|
| Outer diameter D | 2.165 in |
| Width B | 0.512 in |
| ISO bore code | 06 |
| Radial section height (D−d)/2 | 12.5 mm |
| Smallest bore in 6000-series | 10 mm |
| Largest outer diameter in 6000-series | 420 mm |
| Width range across 6000-series | 8–65 mm |
| Bore position in 6000-series (smallest first) | 7 of 35 |
| Bore above smallest 6000-series size | 20 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6006-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 30×55×13 mm envelope per ISO 15; seal variant differs (OPEN vs ZZ) — confirm sealing suits the duty. |
| 6006-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 30×55×13 mm envelope per ISO 15; seal variant differs (OPEN vs 2RS) — confirm sealing suits the duty. |
| 6006-RSR | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 30×55×13 mm envelope per ISO 15; seal variant differs (OPEN vs RSR) — confirm sealing suits the duty. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 6006 model number is decoded
In the 6000-series (ISO 15 diameter series 0) the last two digits encode the bore: 6006 carries bore code 06 = 30 mm. Outside diameter 55 mm and width 13 mm come from the ISO 15 boundary-dimensions general plan. With no seal suffix the bearing is open: no shields or seals are fitted and lubrication is supplied by the application. For normal-load mounting with a rotating inner ring on a 30 mm shaft, typical catalogue practice is a k5 shaft seat with an H7 housing bore — verify against the actual load direction and magnitude.
Typical equipment & failure modes
Common applications
- electric motors
- centrifugal pumps
- small gearboxes
- conveyors and drives
Known failure patterns
- contamination wear from dust and dirt ingress through the open arrangement
- lubricant starvation when no regreasing interval is maintained
- raceway smearing under marginal lubrication at start-up
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- At a 30 mm bore, a shaft-seat burr or an overtight setscrew can score the thin inner ring of 6006; check shaft finish and runout (target Ra ≤ 1.6 µm) before pressing it home.
- The 60xx extra-light section at 30 mm bore uses a smaller 55 mm OD than a 6206; load ratings are lower, so do not replace a failed 62-series bearing with a 60-series without re-rating the load.
- The open 6006 has no lubricant retention: grease escapes and contaminants migrate straight into the 30×55×13 mm raceway, so specify a sealed arrangement for dusty or washdown duty.
- Open bearings tolerate the highest speeds in the 6000-series but need a defined regreasing interval; run-to-failure lubrication is the dominant cause of early failure in open 6006 units.
- Shaft and housing fillets must clear the bearing chamfer so the 13 mm-wide ring seats square; provide an undercut or withdrawal groove instead of relying on an oversized radius.
Frequently asked questions
What are the dimensions of a 6006 bearing?
A 6006 deep-groove ball bearing has a 30 mm bore, 55 mm outer diameter and 13 mm width (1.181 × 2.165 × 0.512 in), per ISO 15 boundary dimensions. It is an open bearing with no seals or shields. Geometry-based estimated mass is about 111 g for a steel-cage unit; catalogue masses vary slightly with seal and cage design.
How does the 6006 bore code work?
The last two digits of 6006 are bore code 06, giving 06 × 5 = 30 mm bore. The 55 mm outside diameter and 13 mm width follow the ISO 15 diameter series, not the bore code alone.
What does no suffix on 6006 mean?
A bare 6006 designation means open: no shields or seals, normal CN radial clearance and P0 normal tolerance unless further suffixes are ordered. The application must supply and retain the lubrication.
How does the 6000 compare with other series at the same 30 mm bore?
The second digit is the diameter series: 60 is the smallest standard section (55×13 mm, 12.5 mm radial section) at 30 mm bore — below 62/63/64 in load capacity, for light loads in compact spaces.
Are 6006 bearings from different brands interchangeable?
For boundary dimensions, yes: every brand's 6006 uses the same ISO 15 envelope (30×55×13 mm). Load ratings, limiting speeds, clearance, precision class and sealing design can differ, so verify those in the supplier catalogue when substituting.
Reviewed & verified by the MPN Base engineering desk against source catalog iso15-ed4-geometry on 2026-09-23. Read our editorial & correction policy.