61814 bearing: complete specifications & equivalents
The 61814 is a ISO 15 radial bearing sized 70 x 90 x 10 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 | 90 mm |
| Width B | 10 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 | 12.4 kN |
| Basic static load rating C0 | 13.2 kN |
| Fatigue load limit Pu | 0.56 kN |
| Reference speed (thermal) | 15000 rpm |
| Limiting speed (mechanical) | 9000 rpm |
| Operating temperature | -40 to +150 °C |
| Mass | 140 g |
| Manufacturer designation | SKF 61814 |
| 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 & 61800-series range
| Bore d | 2.756 in |
|---|---|
| Outer diameter D | 3.543 in |
| Width B | 0.394 in |
| ISO bore code | 14 |
| Radial section height (D−d)/2 | 10 mm |
| Smallest bore in 61800-series | 1 mm |
| Largest outer diameter in 61800-series | 1820 mm |
| Width range across 61800-series | 1–140 mm |
| Bore position in 61800-series (smallest first) | 25 of 74 |
| Bore above smallest 61800-series size | 69 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61814-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×90×10 mm envelope per ISO 15; seal variant differs (OPEN vs 2RS) — confirm sealing suits the duty. |
| 61814-NSK | NSK | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
| 61814-RSR-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×90×10 mm envelope per ISO 15; seal variant differs (OPEN vs RSR) — confirm sealing suits the duty. |
| 61814-ZZ | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×90×10 mm envelope per ISO 15; seal variant differs (OPEN vs ZZ) — confirm sealing suits the duty. |
| 61814-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×90×10 mm envelope per ISO 15; seal variant (OPEN vs 2RS) and load ratings differ — confirm sealing and rating before substituting. |
| 61814-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×90×10 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 61814-RSR-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×90×10 mm envelope per ISO 15; seal variant (OPEN vs RSR) and load ratings differ — confirm sealing and rating before substituting. |
| 61814-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×90×10 mm envelope per ISO 15; seal variant (OPEN vs ZZ) and load ratings differ — confirm sealing and rating 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 61814 model number is decoded
61814 is supplied open, without shields or seals, so the arrangement around it must supply and retain the lubricant. Within the extra-thin 618xx section (diameter series 8 of ISO 15), multiplying bore code 14 by five gives the 70 mm bore; the 90 mm outside diameter and 10 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
- space-constrained gearboxes
- clutch and transmission assemblies
- robotics and automation joints
- lay shafts and idler shafts
Known failure patterns
- contamination wear from dust and dirt ingress through the open arrangement
- lubricant starvation when no regreasing interval is maintained
- false brinelling from vibration while the shaft is stationary
- fretting corrosion on a loose shaft seat
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 61814 with C3 clearance and re-check the residual value after mounting.
- The 618xx thin section at 70 mm bore has only a 10.0 mm radial section height: it saves space but is highly sensitive to misalignment, shaft deflection and shock loads — verify shaft stiffness before choosing it over a 6214.
- Storage matters for open bearings: 61814 leaves the factory with rust preventive only, so clean it and apply the service grease at assembly even if the rings look oily from the wrapper.
- Open bearings tolerate the highest speeds in the 61800-series but need a defined regreasing interval; run-to-failure lubrication is the dominant cause of early failure in open 61814 units.
- The housing bore for the 90 mm OD should be round within IT7; an oval bore pinches the outer ring of 61814 and shows up later as two-point loaded raceway wear.
- Never mix components between two 61814 units: rings, cage and balls are factory-matched and are not field-interchangeable, even between identical designations.
- The open 61814 needs external sealing and application-supplied lubrication; in the SKF catalogue the protected variants are separate order numbers 61814-2Z (shields) and 61814-2RSH (contact seals), not suffix-free 61814.
- The 12.4/13.2 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 61814 bearing?
A 61814 deep-groove ball bearing has a 70 mm bore, 90 mm outer diameter and 10 mm width (2.756 × 3.543 × 0.394 in), per ISO 15 boundary dimensions. It is an open bearing with no seals or shields.
What internal clearance does 61814 have?
Unless a clearance suffix says otherwise, 61814 is manufactured to normal (CN) radial internal clearance. Tight fits and hot shafts consume clearance in service — for those conditions order the C3 execution of 61814 and verify the residual clearance after mounting.
How should 61814 be mounted?
Apply the mounting force to the ring being fitted: on a 70 mm shaft seat the press load must pass through the inner-ring face only. Induction heating of the inner ring (max 120 °C) is the clean method at this size. Never strike the outer ring, the cage or the seals.
What lubrication does 61814 need?
The open 61814 is lubricated by the application; a NLGI 2 lithium-soap grease filled to roughly 25–35% of the free volume is the common choice, with a defined relubrication interval.
What is the SKF designation and catalogue data for 61814?
In the SKF Rolling Bearings catalogue this size is listed as 61814 — the open (unsealed) execution, 70×90×10 mm per ISO 15. Quoted values: C 12.4 kN, C0 13.2 kN, Pu 0.56 kN, limiting speed 9000 r/min, mass 140 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 61814.
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.