61813-RSR bearing: complete specifications & equivalents
The 61813-RSR is a ISO 15 radial bearing sized 65 x 85 x 10 mm (bore x OD x width) with RSR sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 65 mm |
| Outer diameter D | 85 mm |
| Width B | 10 mm |
| Material | GCr15 |
| Seal / shield | RSR |
| 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 | 12.7 kN |
| Fatigue load limit Pu | 0.54 kN |
| Reference speed (thermal) | 16000 rpm |
| Limiting speed (mechanical) | 8000 rpm |
| Operating temperature | -30 to +120 °C |
| Mass | 130 g |
| Manufacturer designation | SKF 61813-2RZ |
| 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 | 2.559 in |
|---|---|
| Outer diameter D | 3.346 in |
| Width B | 0.394 in |
| ISO bore code | 13 |
| 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) | 24 of 74 |
| Bore above smallest 61800-series size | 64 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61813-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×85×10 mm envelope per ISO 15; seal variant differs (RSR vs 2RS) — confirm sealing suits the duty. |
| 61813-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×85×10 mm envelope per ISO 15; seal variant differs (RSR vs OPEN) — confirm sealing suits the duty. |
| 61813-RSR-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. |
| 61813-ZZ | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×85×10 mm envelope per ISO 15; seal variant differs (RSR vs ZZ) — confirm sealing suits the duty. |
| 61813-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×85×10 mm envelope per ISO 15; seal variant (RSR vs 2RS) and load ratings differ — confirm sealing and rating before substituting. |
| 61813-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×85×10 mm envelope per ISO 15; seal variant (RSR vs OPEN) and load ratings differ — confirm sealing and rating before substituting. |
| 61813-RSR-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×85×10 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 61813-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×85×10 mm envelope per ISO 15; seal variant (RSR 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 61813-RSR model number is decoded
61813-RSR uses two non-contact elastomer lips with very low drag; coarse debris stays out, but the bearing is not liquid-tight. Within the extra-thin 618xx section (diameter series 8 of ISO 15), multiplying bore code 13 by five gives the 65 mm bore; the 85 mm outside diameter and 10 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 65 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. SKF's low-friction seal suffix is 2RSL/2RZ (this page's industry-neutral spelling is -RSR); catalogue number 61813-2RZ.
Typical equipment & failure modes
Common applications
- packaging machinery
- space-constrained gearboxes
- clutch and transmission assemblies
- robotics and automation joints
Known failure patterns
- ingress of fine dust or moisture past the non-contact lip in dirty or wet duty (RSR is not liquid-tight)
- lip-lubricant starvation if the bearing runs dry for extended periods
- electrical pitting in VFD-driven motors without grounding protection
- raceway smearing under marginal lubrication at start-up
Selection pitfalls — read before you substitute
- Interference on a 65 mm shaft plus running heat consumes radial clearance: where the shaft runs hot or the fit is tight, order 61813 with C3 clearance and re-check the residual value after mounting.
- Only 10.0 mm of radial section separates bore and OD on the 618xx series at 65 mm: ring flex from clamping or an oval housing bore transfers straight into raceway stress, so seat roundness matters more here than on a 6213.
- The low-drag lip of 61813-RSR barely touches the inner ring; after long shelf storage the grease can separate, so rotate the rings by hand and confirm smooth, silent running before fitting.
- The non-contact lip of 61813-RSR does not retain a lifetime grease fill the way a contact seal does; confirm the regreasing interval for the 65 mm bore position before relying on it as sealed-for-life.
- Axial location must clamp the ring face, not the seal area: a shoulder or circlip bearing on the seal side of the 10 mm-wide ring of 61813-RSR drags the lip and overheats it.
- Vibration during standstill brinells the raceways of a 65 mm bearing at ball spacing; if the machine sits idle next to running equipment, turn the shaft over periodically or isolate the arrangement.
- SKF catalogues the low-friction seal as 61813-2RZ (suffix -2RSL or -2RZ): a non-contact elastomer lip that runs near the open 8000 r/min limiting speed, closer to the open bearing's 16000 r/min reference than the contact-seal version. It keeps coarse debris out without the drag of a contact seal, but is not liquid-tight — use 2RSH for wet or fine-dust positions.
- The 12.4/12.7 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 61813-RSR bearing?
A 61813-RSR deep-groove ball bearing has a 65 mm bore, 85 mm outer diameter and 10 mm width (2.559 × 3.346 × 0.394 in), per ISO 15 boundary dimensions. It is fitted with two low-friction non-contact rubber seals.
What internal clearance does 61813-RSR have?
Unless a clearance suffix says otherwise, 61813-RSR 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 61813 and verify the residual clearance after mounting.
How should 61813-RSR be mounted?
Apply the mounting force to the ring being fitted: on a 65 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 61813-RSR need?
61813-RSR is supplied pre-greased for life and is not designed to be opened for relubrication; where a relubrication path is required, specify the open 61813 with a housing grease fitting instead.
What is the SKF designation and catalogue data for 61813-RSR?
In the SKF Rolling Bearings catalogue this size is listed as 61813-2RZ — two low-friction non-contact elastomer seals, 65×85×10 mm per ISO 15. Quoted values: C 12.4 kN, C0 12.7 kN, Pu 0.54 kN, limiting speed 8000 r/min, mass 130 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 61813-RSR.
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.