61824-2RS bearing: complete specifications & equivalents
The 61824-2RS is a ISO 15 radial bearing sized 120 x 150 x 16 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 | 120 mm |
| Outer diameter D | 150 mm |
| Width B | 16 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 | 29.1 kN |
| Basic static load rating C0 | 28 kN |
| Fatigue load limit Pu | 1.29 kN |
| Limiting speed (mechanical) | 2400 rpm |
| Operating temperature | -30 to +110 °C |
| Mass | 650 g |
| Manufacturer designation | SKF 61824-2RS1 |
| 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 | 4.724 in |
|---|---|
| Outer diameter D | 5.906 in |
| Width B | 0.63 in |
| ISO bore code | 24 |
| Radial section height (D−d)/2 | 15 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) | 34 of 74 |
| Bore above smallest 61800-series size | 119 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61824-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 120×150×16 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 61824-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 120×150×16 mm envelope per ISO 15; seal variant (2RS vs OPEN) and load ratings differ — confirm sealing and rating before substituting. |
| 61824-RSR-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 120×150×16 mm envelope per ISO 15; seal variant (2RS vs RSR) and load ratings differ — confirm sealing and rating before substituting. |
| 61824-ZZ | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 120×150×16 mm envelope per ISO 15; seal variant (2RS vs ZZ) and load ratings differ — confirm sealing and rating before substituting. |
| 61824-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 120×150×16 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 61824-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 120×150×16 mm envelope per ISO 15; seal variant (2RS vs OPEN) and load ratings differ — confirm sealing and rating before substituting. |
| 61824-RSR-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 120×150×16 mm envelope per ISO 15; seal variant (2RS vs RSR) and load ratings differ — confirm sealing and rating before substituting. |
| 61824-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 120×150×16 mm envelope per ISO 15; seal variant (2RS 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 61824-2RS model number is decoded
61824-2RS is closed by two contacting elastomer lips over a lifetime grease fill; the lips add friction, so the speed ceiling sits below the open execution. Within the extra-thin 618xx section (diameter series 8 of ISO 15), multiplying bore code 24 by five gives the 120 mm bore; the 150 mm outside diameter and 16 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 120 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 contact-seal catalogue number is 61824-2RS1 (older text: -2RS1), mapped here from the industry-neutral -2RS spelling.
Typical equipment & failure modes
Common applications
- robotics and automation joints
- lay shafts and idler shafts
- textile machinery
- packaging machinery
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)
- electrical pitting in VFD-driven motors without grounding protection
- raceway smearing under marginal lubrication at start-up
Selection pitfalls — read before you substitute
- Mount this 120 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.
- Only 15.0 mm of radial section separates bore and OD on the 618xx series at 120 mm: ring flex from clamping or an oval housing bore transfers straight into raceway stress, so seat roundness matters more here than on a 6224.
- Contact seals add drag and heat: 61824-2RS runs slower and cooler-limited than the open 61824; rubber lips are generally limited to roughly 80–110 °C continuous depending on grease, and C3 clearance is the common hot-duty choice.
- Never wash a sealed 61824-2RS in solvent or press it home via the outer ring; solvent destroys the grease thickener and mounting force through the seal deforms the lip.
- Do not quieten a noisy bearing by preloading it: the 61800-series is a deep-groove design, not angular-contact; axial preload raises temperature and shortens grease life.
- Deep-groove ball bearings tolerate only minutes of misalignment; if the 150 mm housing cannot be aligned, switch to a self-aligning type rather than shimming 61824-2RS.
- SKF catalogues the contact-sealed version as 61824-2RS1 (older printings may read -2RS1); it is shipped pre-greased and its 2400 r/min limiting speed is set by seal-lip drag and grease life versus the open bearing's 8500 r/min thermal reference speed.
- The 29.1/28 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 61824-2RS bearing?
A 61824-2RS deep-groove ball bearing has a 120 mm bore, 150 mm outer diameter and 16 mm width (4.724 × 5.906 × 0.63 in), per ISO 15 boundary dimensions. It is fitted with two contact rubber seals and is normally pre-greased.
What internal clearance does 61824-2RS have?
Unless a clearance suffix says otherwise, 61824-2RS 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 61824 and verify the residual clearance after mounting.
How should 61824-2RS be mounted?
Apply the mounting force to the ring being fitted: on a 120 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 61824-2RS need?
61824-2RS is supplied pre-greased for life and is not designed to be opened for relubrication; where a relubrication path is required, specify the open 61824 with a housing grease fitting instead.
What is the SKF designation and catalogue data for 61824-2RS?
In the SKF Rolling Bearings catalogue this size is listed as 61824-2RS1 — two contact elastomer seals over a lifetime grease fill, 120×150×16 mm per ISO 15. Quoted values: C 29.1 kN, C0 28 kN, Pu 1.29 kN, limiting speed 2400 r/min, mass 650 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 61824-2RS.
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.