6414 bearing: complete specifications & equivalents
The 6414 is a ISO 15 radial bearing sized 70 x 180 x 42 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 70 mm |
| Outer diameter D | 180 mm |
| Width B | 42 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN / C3 available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 143 kN |
| Basic static load rating C0 | 104 kN |
| Fatigue load limit Pu | 3.9 kN |
| Reference speed (thermal) | 8500 rpm |
| Limiting speed (mechanical) | 5300 rpm |
| Operating temperature | -40 to +150 °C |
| Mass | 4950 g |
| Manufacturer designation | SKF 6414 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-24 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-24
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 & 6400-series range
| Bore d | 2.756 in |
|---|---|
| Outer diameter D | 7.087 in |
| Width B | 1.654 in |
| ISO bore code | 14 |
| Radial section height (D−d)/2 | 55 mm |
| Smallest bore in 6400-series | 10 mm |
| Largest outer diameter in 6400-series | 250 mm |
| Width range across 6400-series | 12–58 mm |
| Bore position in 6400-series (smallest first) | 15 of 21 |
| Bore above smallest 6400-series size | 60 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6414-2RS | GENERIC-ISO | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×180×42 mm envelope per ISO 15; seal variant differs (OPEN vs 2RS) — confirm sealing suits the duty. |
| 6414-ZZ | GENERIC-ISO | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×180×42 mm envelope per ISO 15; seal variant differs (OPEN vs ZZ) — confirm sealing suits the duty. |
| 6414-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×180×42 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
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 6414 model number is decoded
6414 is supplied open, without shields or seals, so the arrangement around it must supply and retain the lubricant. Within the heavy 64xx section (diameter series 4 of ISO 15), multiplying bore code 14 by five gives the 70 mm bore; the 180 mm outside diameter and 42 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 70 mm shaft under normal load, catalogue practice seats it on a k5 shaft fit with an H7 housing bore — confirm against the actual load direction and magnitude before committing. In the SKF catalogue this open execution carries the bare designation; protected variants are ordered separately as -2Z and -2RSH.
Typical equipment & failure modes
Common applications
- gearboxes and speed reducers
- conveyor drives
- material-handling equipment
- industrial fans
Known failure patterns
- contamination wear from dust and dirt ingress through the open arrangement
- lubricant starvation when no regreasing interval is maintained
- brinelling from static overload or hammering during mounting
- false brinelling from vibration while the shaft is stationary
Selection pitfalls — read before you substitute
- Interference on a 70 mm shaft plus running heat consumes radial clearance: where the shaft runs hot or the fit is tight, order 6414 with C3 clearance and re-check the residual value after mounting.
- The 64xx heavy section at 70 mm bore exists for high radial load at moderate rpm; its 180 mm OD and 42 mm width demand a larger housing, and grease life at motor speeds is short — treat it as a low-speed, high-load choice.
- The open 6414 has no lubricant retention: grease escapes and contaminants migrate straight into the 70×180×42 mm raceway, so specify a sealed arrangement for dusty or washdown duty.
- Open bearings tolerate the highest speeds in the 6400-series but need a defined regreasing interval; run-to-failure lubrication is the dominant cause of early failure in open 6414 units.
- Suffixes stack in a defined order — clearance follows the seal code, e.g. 6414-C3. No clearance suffix means normal CN clearance.
- Assign fits by which ring rotates: an interference shaft fit for a rotating inner ring; if the outer ring rotates instead, reverse the logic — a loose rotating ring creeps and frets its seat.
- The open 6414 needs external sealing and application-supplied lubrication; in the SKF catalogue the protected variants are separate order numbers 6414-2Z (shields) and 6414-2RSH (contact seals), not suffix-free 6414.
- The 143/104 kN ratings here are SKF Explorer-class figures from catalogue PUB BU/P1 17000/1 EN (Oct 2018); SKF can revise internal geometry and ratings without changing the designation, so treat the catalogue version and date as part of the specification and re-verify for critical drives.
Frequently asked questions
What are the dimensions of a 6414 bearing?
A 6414 deep-groove ball bearing has a 70 mm bore, 180 mm outer diameter and 42 mm width (2.756 × 7.087 × 1.654 in), per ISO 15 boundary dimensions. It is an open bearing with no seals or shields.
How does the 6414 bore code work?
The last two digits of 6414 are bore code 14, giving 14 × 5 = 70 mm bore. The 180 mm outside diameter and 42 mm width follow the ISO 15 diameter series, not the bore code alone.
What does no suffix on 6414 mean?
A bare 6414 designation means open: no shields or seals, normal CN radial clearance and P0 normal tolerance unless further suffixes are ordered. The application must supply and retain the lubrication.
How does the 6400 compare with other series at the same 70 mm bore?
The '4' is the heavy diameter series: 180×42 mm, 55.0 mm radial section at 70 mm bore — the highest-capacity single-row 6xx option here, aimed at lower-speed, high-load shafts.
What is the SKF designation and catalogue data for 6414?
In the SKF Rolling Bearings catalogue this size is listed as 6414 — the open (unsealed) execution, 70×180×42 mm per ISO 15. Quoted values: C 143 kN, C0 104 kN, Pu 3.9 kN, limiting speed 5300 r/min, mass 4950 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 6414.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-24. Read our editorial & correction policy.