62301-2RS bearing: complete specifications & equivalents
The 62301-2RS is a ISO 15 radial bearing sized 12 x 37 x 17 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 | 12 mm |
| Outer diameter D | 37 mm |
| Width B | 17 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 9.75 kN |
| Basic static load rating C0 | 4.15 kN |
| Fatigue load limit Pu | 0.176 kN |
| Limiting speed (mechanical) | 14000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 70 g |
| Manufacturer designation | 62301-2RS1 |
| 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 | 0.472 in |
|---|---|
| Outer diameter D | 1.457 in |
| Width B | 0.669 in |
| ISO bore code | 01 |
| Radial section height (D−d)/2 | 12.5 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) | 2 of 15 |
| Bore above smallest 62300-series size | 2 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 4301-ATN9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 12×37×17 mm envelope as SKF 4301 ATN9, but catalogue C/C0 differ (9.75/4.15 kN vs 13/7.8 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 62301-2RS 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); bore code 01 follows the 10/12/15/17 mm exception table, so 62301 fits a 12 mm shaft. The envelope is 12×37×17 mm (0.472×1.457×0.669 in) with a 12.5 mm radial section height, C 9.75 kN, C0 4.15 kN and Pu 0.176 kN. SKF catalogues the sealed execution as 62301-2RS1: 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 14000 r/min, catalogue mass 70 g.
Typical equipment & failure modes
Common applications
- electric motors
- centrifugal pumps
- small gearboxes
- conveyor drives
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
- false brinelling from vibration while the shaft stands idle
- fretting corrosion on a creeping shaft or housing seat
Selection pitfalls — read before you substitute
- Mount by heating the inner ring (max 120 °C) — driving 62301-2RS home through the outer ring or balls brinells the raceways.
- Assign interference to the rotating ring: on a conventional shaft-mounted 12 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.
- Contact seals make 62301-2RS slower than the open 62301 (limiting 14000 r/min) and forbid solvent washing, which destroys the lifetime grease.
- Do not pry the caps off 62301-2RS to repack it; shield/seal damage leaves a gap that throws grease and admits dirt.
- Fillet radii must clear the 62301-2RS chamfer so the 17 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- Assign interference to the rotating ring: on a conventional shaft-mounted 12 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.
Frequently asked questions
What are the dimensions of 62301-2RS?
The SKF 62301-2RS1 measures 12 mm bore × 37 mm OD × 17 mm width (0.472 × 1.457 × 0.669 in), mass about 70 g. It has two contact rubber seals and a lifetime grease fill.
How does the bore code in 62301 work?
Codes 00–03 follow the exception table (10, 12, 15, 17 mm): 62301 fits a 12 mm shaft. Code × 5 starts at code 04.
What load can 62301-2RS take?
Catalogue values for 62301-2RS1: dynamic C 9.75 kN, static C0 4.15 kN, fatigue limit Pu 0.176 kN. Use C in life calculation and C0 for static checks at 12 mm bore.
What is the speed rating of 62301-2RS?
SKF publishes only the 14000 r/min limiting speed for this execution; sealed variants have no thermal reference speed because seal and grease life govern.
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.