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.

Dual-source verified Boundary dimensions and basic load ratings cross-checked against the SKF and NSK catalogues: d/D/B agree within 0.5 mm, dynamic/static ratings within 7.1%. Checked 2026-09-24.
Bearing dimension schematic Front view shows outer diameter D and bore d; side section shows width B. D = 175 mm d = 140 B = 18 mm side section front view
Principal dimensions: bore d 140 mm, outer diameter D 175 mm, width B 18 mm. Schematic, not to scale.

Specification table

ParameterValue
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 d5.512 in
Outer diameter D6.89 in
Width B0.709 in
ISO bore code28
Radial section height (D−d)/217.5 mm
Smallest bore in 61800-series1 mm
Largest outer diameter in 61800-series1820 mm
Width range across 61800-series1–140 mm
Bore position in 61800-series (smallest first)36 of 74
Bore above smallest 61800-series size139 mm

Cross references & equivalents

Equivalent modelBrandMatch levelNote
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.