4313-ATN9 bearing: complete specifications & equivalents
The 4313-ATN9 is a ISO 15 radial bearing sized 65 x 140 x 48 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 65 mm |
| Outer diameter D | 140 mm |
| Width B | 48 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 121 kN |
| Basic static load rating C0 | 106 kN |
| Fatigue load limit Pu | 4.5 kN |
| Reference speed (thermal) | 8000 rpm |
| Limiting speed (mechanical) | 4300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 3250 g |
| Manufacturer designation | 4313 ATN9 |
| 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 & 4300-series range
| Bore d | 2.559 in |
|---|---|
| Outer diameter D | 5.512 in |
| Width B | 1.89 in |
| ISO bore code | 13 |
| Radial section height (D−d)/2 | 37.5 mm |
| Smallest bore in 4300-series | 12 mm |
| Largest outer diameter in 4300-series | 160 mm |
| Width range across 4300-series | 17–55 mm |
| Bore position in 4300-series (smallest first) | 13 of 14 |
| Bore above smallest 4300-series size | 53 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 62313-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×140×48 mm envelope as SKF 62313-2RS1, but catalogue C/C0 differ (121/106 kN vs 92.3/60 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 4313-ATN9 model number is decoded
4313 ATN9 is a double-row deep-groove ball bearing in the 4300-series: the last two digits encode the bore: 4313 carries code 13 = 65 mm (code × 5). Two complete ball sets share the 65×140×48 mm (2.559×5.512×1.89 in) envelope, giving C 121 kN, C0 106 kN and Pu 4.5 kN, with reversing axial capacity a single-row bearing cannot match. ATN9 is the glass-fibre PA66 cage. Limiting speed 4300 r/min, mass 3250 g. The arrangement is open and requires external sealing.
Typical equipment & failure modes
Common applications
- fans with axial thrust reversals
- industrial wheel arrangements
- double-supported pump impeller shafts
- gearbox layshafts with reversing axial load
Known failure patterns
- uneven load sharing between the two raceways when one ring is tilted
- polyamide cage embrittlement after sustained high-temperature service
- brinelling from static overload or hammer blows during mounting
- false brinelling from vibration while the shaft stands idle
Selection pitfalls — read before you substitute
- Two deep-groove raceways in 4313-ATN9 share the load but need parallel seats; tilting the 48 mm-wide assembly loads one row heavily and can spall it early.
- The wide 65×140×48 mm envelope is not interchangeable with a single-row 6213 — the housing and shaft shoulders differ, so design the seat for the double-row width from the start.
- Double-row 4313 is open and needs application sealing and lubrication; in dusty drives add external seals rather than expecting the bearing itself to stay clean.
- C 121 kN in a 48 mm width is the strength of the double-row design; use it for combined or reversing axial loads rather than pure radial duty where a slimmer single-row bearing would run cooler.
- C 121 kN in a 48 mm width is the strength of the double-row design; use it for combined or reversing axial loads rather than pure radial duty where a slimmer single-row bearing would run cooler.
- Deep-groove geometry tolerates only minutes of misalignment; if the 140 mm housing bore cannot be aligned, move to a self-aligning bearing rather than shimming 4313-ATN9.
Frequently asked questions
What are the dimensions of 4313-ATN9?
Double-row 4313 ATN9 measures 65×140×48 mm (2.559×5.512×1.89 in), about 3250 g.
What does ATN9 mean on 4313 ATN9?
A = double-row deep-groove arrangement, TN9 is a glass-fibre-reinforced polyamide 66 cage; it limits continuous temperature to roughly 100–120 °C.
What load does 4313-ATN9 carry?
C 121 kN, C0 106 kN and Pu 4.5 kN per catalogue 17000; both rows share the load when the rings sit parallel.
Why choose a double-row 42xx/43xx bearing?
Two ball rows give higher C (121 kN for 4313-ATN9), reversing axial capacity and some moment stiffness in one 48 mm-wide unit — useful on gearbox layshafts and pump shafts.
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.