61900-2RS bearing: complete specifications & equivalents
The 61900-2RS is a ISO 15 radial bearing sized 10 x 22 x 6 mm (bore x OD x width) with 2RS sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 10 mm |
| Outer diameter D | 22 mm |
| Width B | 6 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN / C3 available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 2.7 kN |
| Basic static load rating C0 | 1.27 kN |
| Fatigue load limit Pu | 0.054 kN |
| Limiting speed (mechanical) | 20000 rpm |
| Operating temperature | -30 to +110 °C |
| Mass | 10 g |
| Manufacturer designation | SKF 61900-2RS1 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-25 |
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 & 61900-series range
| Bore d | 0.394 in |
|---|---|
| Outer diameter D | 0.866 in |
| Width B | 0.236 in |
| ISO bore code | 00 |
| Radial section height (D−d)/2 | 6 mm |
| Smallest bore in 61900-series | 3 mm |
| Largest outer diameter in 61900-series | 1120 mm |
| Width range across 61900-series | 3–118 mm |
| Bore position in 61900-series (smallest first) | 8 of 63 |
| Bore above smallest 61900-series size | 7 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61900-2RS-FAG | FAG | 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. |
| 61900-FAG | FAG | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×22×6 mm envelope per ISO 15; seal variant differs (2RS vs OPEN) — confirm sealing suits the duty. |
| 61900-ZZ-FAG | FAG | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×22×6 mm envelope per ISO 15; seal variant (2RS vs ZZ) and load ratings differ — confirm sealing and rating before substituting. |
| 61900 | ISO 15 | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | ISO 15 boundary-dimension envelope; seal suffix convention varies by brand (2RS / DDU / LLU / 2RSR) — verify seal design and temperature range before substituting. |
| 61900-2RS-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. |
| 61900-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×22×6 mm envelope per ISO 15; seal variant differs (2RS vs OPEN) — confirm sealing suits the duty. |
| 61900-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×22×6 mm envelope per ISO 15; seal variant differs (2RS vs RSR) — confirm sealing suits the duty. |
| 61900-ZZ-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×22×6 mm envelope per ISO 15; seal variant differs (2RS vs ZZ) — confirm sealing suits the duty. |
| 61900-2RS-NTN | NTN | 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. |
| 61900-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×22×6 mm envelope per ISO 15; seal variant differs (2RS vs OPEN) — confirm sealing suits the duty. |
| 61900-RSR-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×22×6 mm envelope per ISO 15; seal variant differs (2RS vs RSR) — confirm sealing suits the duty. |
| 61900-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 10×22×6 mm envelope per ISO 15; seal variant differs (2RS vs ZZ) — confirm sealing suits the duty. |
| W61900-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF stainless execution W 61900-2RS1 shares the 10×22×6 mm envelope but rates differently (2.7/1.27 kN vs 2.34/1.25 kN) — not a load-rating equivalent. |
| W61900-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF stainless execution W 61900-2Z shares the 10×22×6 mm envelope but rates differently (2.7/1.27 kN vs 2.34/1.25 kN) — not a load-rating equivalent. |
| W61900 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF stainless execution W 61900 shares the 10×22×6 mm envelope but rates differently (2.7/1.27 kN vs 2.34/1.25 kN) — not a load-rating equivalent. |
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 61900-2RS model number is decoded
In the 61900-series (diameter series 9 of ISO 15) the last two digits encode the bore: 61900 carries bore code 00 = 10 mm. Codes 00–03 follow the 10/12/15/17 mm exception table rather than code × 5. Outside diameter 22 mm and width 6 mm come from the ISO 15 boundary-dimensions general plan. Suffix -2RS denotes two contact-type elastomer seals over a lifetime grease fill; the sealing lips add drag compared with open or shielded versions. For normal-load mounting with a rotating inner ring on a 10 mm shaft, typical catalogue practice is a j5 shaft seat with an H7 housing bore — verify against the actual load direction and magnitude. SKF's contact-seal catalogue number is 61900-2RS1 (older text: -2RS1), mapped here from the industry-neutral -2RS spelling.
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
- seal-lip hardening and loss of pre-grease in sustained high-temperature service
- grease-life expiry in the sealed-for-life cavity (no relubrication path)
- raceway smearing under marginal lubrication at start-up
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- Miniature bearings like 61900-2RS (10 mm bore) brinell under surprisingly small pressing force; use a fitting sleeve on the ring being mounted and never let the assembly load cross the balls.
- The 619xx thin section (6.0 mm section height at 10 mm bore) trades load capacity for compactness; stiff, accurately aligned seats are essential or edge loading will spall the raceway early.
- Heat is the enemy of the sealed 61900-2RS: sustained running near the lip temperature limit hardens the rubber, after which grease escapes and dirt tracks in — watch the housing temperature in hot drives.
- Never wash a sealed 61900-2RS in solvent or press it home via the outer ring; solvent destroys the grease thickener and mounting force through the seal deforms the lip.
- Measure the shaft, do not trust the drawing: a 10 mm nominal journal worn by even 0.02 mm turns an interference seat into a creeping fit that frets the bore of 61900-2RS.
- 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 contact-sealed version as 61900-2RS1 (older printings may read -2RS1); it is shipped pre-greased and its 20000 r/min limiting speed is set by seal-lip drag and grease life versus the open bearing's 70000 r/min thermal reference speed.
- The 2.7/1.27 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 61900-2RS bearing?
A 61900-2RS deep-groove ball bearing has a 10 mm bore, 22 mm outer diameter and 6 mm width (0.394 × 0.866 × 0.236 in), per ISO 15 boundary dimensions. It is fitted with two contact rubber seals and is normally pre-greased.
What internal clearance does 61900-2RS have?
Unless a clearance suffix says otherwise, 61900-2RS 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 61900 and verify the residual clearance after mounting.
How should 61900-2RS be mounted?
Apply the mounting force to the ring being fitted: on a 10 mm shaft seat the press load must pass through the inner-ring face only. A fitting sleeve and an arbor press are normally sufficient at this size. Never strike the outer ring, the cage or the seals.
What lubrication does 61900-2RS need?
61900-2RS is supplied pre-greased for life and is not designed to be opened for relubrication; where a relubrication path is required, specify the open 61900 with a housing grease fitting instead.
What is the SKF designation and catalogue data for 61900-2RS?
In the SKF Rolling Bearings catalogue this size is listed as 61900-2RS1 — two contact elastomer seals over a lifetime grease fill, 10×22×6 mm per ISO 15. Quoted values: C 2.7 kN, C0 1.27 kN, Pu 0.054 kN, limiting speed 20000 r/min, mass 10 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 61900-2RS.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-25. Read our editorial & correction policy.