62305-2RS bearing: complete specifications & equivalents
The 62305-2RS is a ISO 15 radial bearing sized 25 x 62 x 24 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 | 25 mm |
| Outer diameter D | 62 mm |
| Width B | 24 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 22.5 kN |
| Basic static load rating C0 | 11.6 kN |
| Fatigue load limit Pu | 0.49 kN |
| Limiting speed (mechanical) | 7500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 320 g |
| Manufacturer designation | 62305-2RS1 |
| 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 | 0.984 in |
|---|---|
| Outer diameter D | 2.441 in |
| Width B | 0.945 in |
| ISO bore code | 05 |
| Radial section height (D−d)/2 | 18.5 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) | 6 of 15 |
| Bore above smallest 62300-series size | 15 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 4305-ATN9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 25×62×24 mm envelope as SKF 4305 ATN9, but catalogue C/C0 differ (22.5/11.6 kN vs 31.9/22.4 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 62305-2RS 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: 62305 carries code 05 = 25 mm (code × 5). The envelope is 25×62×24 mm (0.984×2.441×0.945 in) with a 18.5 mm radial section height, C 22.5 kN, C0 11.6 kN and Pu 0.49 kN. SKF catalogues the sealed execution as 62305-2RS1: 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 7500 r/min, catalogue mass 320 g.
Typical equipment & failure modes
Common applications
- fans and blowers
- agricultural equipment
- garden machinery
- textile machines
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
- electrical pitting in VFD-driven motors without shaft grounding
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- Assign interference to the rotating ring: on a conventional shaft-mounted 25 mm position the inner ring rotates, so use a k5/m6 shaft seat with an H7 housing — reverse the logic if the outer ring rotates.
- Mount by heating the inner ring (max 120 °C) — driving 62305-2RS home through the outer ring or balls brinells the raceways.
- Contact seals make 62305-2RS slower than the open 62305 (limiting 7500 r/min) and forbid solvent washing, which destroys the lifetime grease.
- Do not pry the caps off 62305-2RS to repack it; shield/seal damage leaves a gap that throws grease and admits dirt.
- Catalogue ratings for 62305-2RS (C 22.5 kN, C0 11.6 kN) are SKF figures from PUB BU/P1 17000; geometry revisions can change ratings without changing the designation, so keep the catalogue edition with the specification.
- Mount by heating the inner ring (max 120 °C) — driving 62305-2RS home through the outer ring or balls brinells the raceways.
Frequently asked questions
What are the dimensions of 62305-2RS?
The SKF 62305-2RS1 measures 25 mm bore × 62 mm OD × 24 mm width (0.984 × 2.441 × 0.945 in), mass about 320 g. It has two contact rubber seals and a lifetime grease fill.
How does the bore code in 62305 work?
The final two digits of 62305 are bore code 05, multiplied by 5 to give 25 mm.
Which fits should I use for 62305-2RS?
With a rotating inner ring use roughly k5 on the shaft and H7 in the 62 mm housing; reverse the interference if the outer ring rotates.
How heavy is 62305-2RS?
Catalogue mass is 320 g for 62305-2RS1; seal and cage executions of the same envelope differ by a few grams.
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.