62306-2RS bearing: complete specifications & equivalents
The 62306-2RS is a ISO 15 radial bearing sized 30 x 72 x 27 mm (bore x OD x width) with 2RS sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 30 mm |
| Outer diameter D | 72 mm |
| Width B | 27 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 28.1 kN |
| Basic static load rating C0 | 16 kN |
| Fatigue load limit Pu | 0.67 kN |
| Limiting speed (mechanical) | 6300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 500 g |
| Manufacturer designation | 62306-2RS1 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & 62300-series range
| Bore d | 1.181 in |
|---|---|
| Outer diameter D | 2.835 in |
| Width B | 1.063 in |
| ISO bore code | 06 |
| Radial section height (D−d)/2 | 21 mm |
| Smallest bore in 62300-series | 10 mm |
| Largest outer diameter in 62300-series | 150 mm |
| Width range across 62300-series | 17–51 mm |
| Bore position in 62300-series (smallest first) | 7 of 15 |
| Bore above smallest 62300-series size | 20 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 4306-ATN9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 30×72×27 mm envelope as SKF 4306 ATN9, but catalogue C/C0 differ (28.1/16 kN vs 41/30 kN) — envelope match only after a load check. |
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 62306-2RS model number is decoded
The 62300-series is the wide-section counterpart of the standard deep-groove family (extra width code built into the designation); the last two digits encode the bore: 62306 carries code 06 = 30 mm (code × 5). The envelope is 30×72×27 mm (1.181×2.835×1.063 in) with a 21.0 mm radial section height, C 28.1 kN, C0 16 kN and Pu 0.67 kN. SKF catalogues the sealed execution as 62306-2RS1: two contact elastomer lips (2RS1/2RSH spelling) over a lifetime grease fill; the lips add drag, and no reference (thermal) speed is published. Limiting speed 6300 r/min, catalogue mass 500 g.
Typical equipment & failure modes
Common applications
- centrifugal pumps
- small gearboxes
- conveyor drives
- fans and blowers
Known failure patterns
- contact-seal lip hardening and pre-grease loss after long high-temperature service
- grease-life expiry inside the sealed-for-life cavity, which has no relubrication path
- raceway smearing under marginal lubrication at start-up
- electrical pitting in VFD-driven motors without shaft grounding
Selection pitfalls — read before you substitute
- Clearance suffixes follow the seal code in the designation stack (e.g. 62306-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- Clearance suffixes follow the seal code in the designation stack (e.g. 62306-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- Contact seals make 62306-2RS slower than the open 62306 (limiting 6300 r/min) and forbid solvent washing, which destroys the lifetime grease.
- Do not pry the caps off 62306-2RS to repack it; shield/seal damage leaves a gap that throws grease and admits dirt.
- The fatigue load limit is 0.67 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- Fillet radii must clear the 62306-2RS chamfer so the 27 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
Frequently asked questions
What are the dimensions of 62306-2RS?
The SKF 62306-2RS1 measures 30 mm bore × 72 mm OD × 27 mm width (1.181 × 2.835 × 1.063 in), mass about 500 g. It has two contact rubber seals and a lifetime grease fill.
How does the bore code in 62306 work?
The final two digits of 62306 are bore code 06, multiplied by 5 to give 30 mm.
What is the speed rating of 62306-2RS?
SKF publishes only the 6300 r/min limiting speed for this execution; sealed variants have no thermal reference speed because seal and grease life govern.
What is the difference between 62306-2RS and a same-bore 62-series bearing?
Section height differs: 62306-2RS has a 21 mm radial section and C 28.1 kN; always match d, D and B — same bore alone never makes two bearings interchangeable.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-27. Read our editorial & correction policy.