62310-2RS bearing: complete specifications & equivalents
The 62310-2RS is a ISO 15 radial bearing sized 50 x 110 x 40 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 | 50 mm |
| Outer diameter D | 110 mm |
| Width B | 40 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 61.8 kN |
| Basic static load rating C0 | 38 kN |
| Fatigue load limit Pu | 1.6 kN |
| Limiting speed (mechanical) | 4300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1600 g |
| Manufacturer designation | 62310-2RS1 |
| 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 | 1.969 in |
|---|---|
| Outer diameter D | 4.331 in |
| Width B | 1.575 in |
| ISO bore code | 10 |
| Radial section height (D−d)/2 | 30 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) | 11 of 15 |
| Bore above smallest 62300-series size | 40 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 4310-ATN9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 50×110×40 mm envelope as SKF 4310 ATN9, but catalogue C/C0 differ (61.8/38 kN vs 81.9/69.5 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 62310-2RS 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: 62310 carries code 10 = 50 mm (code × 5). The envelope is 50×110×40 mm (1.969×4.331×1.575 in) with a 30.0 mm radial section height, C 61.8 kN, C0 38 kN and Pu 1.6 kN. SKF catalogues the sealed execution as 62310-2RS1: 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 4300 r/min, catalogue mass 1600 g.
Typical equipment & failure modes
Common applications
- machine tool auxiliaries
- agricultural gearboxes
- industrial electric motors
- gearboxes and speed reducers
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
- cage damage from running beyond the limiting speed
- raceway smearing under marginal lubrication at start-up
Selection pitfalls — read before you substitute
- Clearance suffixes follow the seal code in the designation stack (e.g. 62310-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- Fillet radii must clear the 62310-2RS chamfer so the 40 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- Contact seals make 62310-2RS slower than the open 62310 (limiting 4300 r/min) and forbid solvent washing, which destroys the lifetime grease.
- Do not pry the caps off 62310-2RS to repack it; shield/seal damage leaves a gap that throws grease and admits dirt.
- Do not preload 62310-2RS to silence it: a deep-groove ball bearing is not angular-contact, and axial preload only raises temperature and shortens grease life.
- Clearance suffixes follow the seal code in the designation stack (e.g. 62310-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
Frequently asked questions
What are the dimensions of 62310-2RS?
The SKF 62310-2RS1 measures 50 mm bore × 110 mm OD × 40 mm width (1.969 × 4.331 × 1.575 in), mass about 1600 g. It has two contact rubber seals and a lifetime grease fill.
How does the bore code in 62310 work?
The final two digits of 62310 are bore code 10, multiplied by 5 to give 50 mm.
Which fits should I use for 62310-2RS?
With a rotating inner ring use roughly k5 on the shaft and H7 in the 110 mm housing; reverse the interference if the outer ring rotates.
How heavy is 62310-2RS?
Catalogue mass is 1600 g for 62310-2RS1; 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.