61828-RSR bearing: complete specifications & equivalents
The 61828-RSR is a ISO 15 radial bearing sized 140 x 175 x 18 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 | 140 mm |
| Outer diameter D | 175 mm |
| Width B | 18 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 | 39 kN |
| Basic static load rating C0 | 46.5 kN |
| Fatigue load limit Pu | 1.66 kN |
| Reference speed (thermal) | 7500 rpm |
| Limiting speed (mechanical) | 3600 rpm |
| Operating temperature | -30 to +120 °C |
| Mass | 990 g |
| Manufacturer designation | SKF 61828-2RZ |
| 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 | 5.512 in |
|---|---|
| Outer diameter D | 6.89 in |
| Width B | 0.709 in |
| ISO bore code | 28 |
| Radial section height (D−d)/2 | 17.5 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) | 36 of 74 |
| Bore above smallest 61800-series size | 139 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61828-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (RSR vs 2RS) — confirm sealing suits the duty. |
| 61828-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (RSR vs OPEN) — confirm sealing suits the duty. |
| 61828-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. |
| 61828-ZZ | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (RSR vs ZZ) — confirm sealing suits the duty. |
| 61828-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (RSR vs 2RS) — confirm sealing suits the duty. |
| 61828-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (RSR vs OPEN) — confirm sealing suits the duty. |
| 61828-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 140×175×18 mm envelope per ISO 15; seal variant differs (RSR vs ZZ) — confirm sealing suits the duty. |
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 61828-RSR model number is decoded
61828-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 28 by five gives the 140 mm bore; the 175 mm outside diameter and 18 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 140 mm shaft under normal load, catalogue practice seats it on a m6 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 61828-2RZ.
Typical equipment & failure modes
Common applications
- robotics and automation joints
- lay shafts and idler shafts
- textile machinery
- packaging machinery
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
- false brinelling from vibration while the shaft is stationary
- fretting corrosion on a loose shaft seat
Selection pitfalls — read before you substitute
- Mount this 140 mm bore bearing by heating the inner ring (induction heater, max 120 °C) — never drive it home through the outer ring or balls, that brinells the raceways.
- The 618xx thin section at 140 mm bore has only a 17.5 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 6228.
- The low-drag lip of 61828-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 61828-RSR does not retain a lifetime grease fill the way a contact seal does; confirm the regreasing interval for the 140 mm bore position before relying on it as sealed-for-life.
- A 140 mm bore listing showing the right d/D/B but no standard or precision-class reference may be a loose-tolerance import; measure bore/OD spread before fitting it to a machined shaft.
- 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.
- SKF catalogues the low-friction seal as 61828-2RZ (suffix -2RSL or -2RZ): a non-contact elastomer lip that runs near the open 3600 r/min limiting speed, closer to the open bearing's 7500 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 39/46.5 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 61828-RSR bearing?
A 61828-RSR deep-groove ball bearing has a 140 mm bore, 175 mm outer diameter and 18 mm width (5.512 × 6.89 × 0.709 in), per ISO 15 boundary dimensions. It is fitted with two low-friction non-contact rubber seals.
How does the 61828 bore code work?
The last two digits of 61828 are bore code 28, giving 28 × 5 = 140 mm bore. The 175 mm outside diameter and 18 mm width follow the ISO 15 diameter series, not the bore code alone.
What does the RSR suffix on 61828-RSR mean?
RSR means two low-friction non-contact rubber seals. They keep coarse debris out with minimal drag (speed close to the open bearing) but are not liquid-tight; use -2RS contact seals for wet or fine-dust environments.
How does the 61800 compare with other series at the same 140 mm bore?
618 is an extra-thin section: 175×18 mm, only 17.5 mm radial section at 140 mm bore, far smaller than a 6228, for space-limited layouts at the cost of load rating and misalignment tolerance.
What is the SKF designation and catalogue data for 61828-RSR?
In the SKF Rolling Bearings catalogue this size is listed as 61828-2RZ — two low-friction non-contact elastomer seals, 140×175×18 mm per ISO 15. Quoted values: C 39 kN, C0 46.5 kN, Pu 1.66 kN, limiting speed 3600 r/min, mass 990 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 61828-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.