61802-ZZ bearing: complete specifications & equivalents
The 61802-ZZ is a ISO 15 radial bearing sized 15 x 24 x 5 mm (bore x OD x width) with ZZ sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 15 mm |
| Outer diameter D | 24 mm |
| Width B | 5 mm |
| Material | GCr15 |
| Seal / shield | ZZ |
| Internal clearance | CN / C3 available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 1.9 kN |
| Basic static load rating C0 | 1.1 kN |
| Fatigue load limit Pu | 0.048 kN |
| Reference speed (thermal) | 60000 rpm |
| Limiting speed (mechanical) | 30000 rpm |
| Operating temperature | -30 to +120 °C |
| Mass | 7 g |
| Manufacturer designation | SKF 61802-2Z |
| 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 | 0.591 in |
|---|---|
| Outer diameter D | 0.945 in |
| Width B | 0.197 in |
| ISO bore code | 02 |
| Radial section height (D−d)/2 | 4.5 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) | 13 of 74 |
| Bore above smallest 61800-series size | 14 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 61802-2RS-FAG | FAG | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; seal variant (ZZ vs 2RS) and load ratings differ — confirm sealing and rating before substituting. |
| 61802-FAG | FAG | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; seal variant (ZZ vs OPEN) and load ratings differ — confirm sealing and rating before substituting. |
| 61802-ZZ-FAG | FAG | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 61802 | 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. |
| 61802-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; seal variant (ZZ vs 2RS) and load ratings differ — confirm sealing and rating before substituting. |
| 61802-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; seal variant (ZZ vs OPEN) and load ratings differ — confirm sealing and rating before substituting. |
| 61802-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; seal variant (ZZ vs RSR) and load ratings differ — confirm sealing and rating before substituting. |
| 61802-ZZ-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 61802-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; seal variant (ZZ vs 2RS) and load ratings differ — confirm sealing and rating before substituting. |
| 61802-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; seal variant (ZZ vs OPEN) and load ratings differ — confirm sealing and rating before substituting. |
| 61802-RSR-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; seal variant (ZZ vs RSR) and load ratings differ — confirm sealing and rating before substituting. |
| 61802-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 15×24×5 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| W61802-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF stainless execution W 61802-2RS1 shares the 15×24×5 mm envelope but rates differently (1.9/1.1 kN vs 1.65/1.08 kN) — not a load-rating equivalent. |
| W61802-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF stainless execution W 61802-2Z shares the 15×24×5 mm envelope but rates differently (1.9/1.1 kN vs 1.65/1.08 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 61802-ZZ model number is decoded
In the 61800-series (diameter series 8 of ISO 15) the last two digits encode the bore: 61802 carries bore code 02 = 15 mm. Codes 00–03 follow the 10/12/15/17 mm exception table rather than code × 5. Outside diameter 24 mm and width 5 mm come from the ISO 15 boundary-dimensions general plan. Suffix -ZZ denotes two non-contact metallic shields; they retain grease and block coarse debris but are not liquid-tight. For normal-load mounting with a rotating inner ring on a 15 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 own suffix is 2Z (this page's industry-neutral spelling is -ZZ); catalogue number 61802-2Z.
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
- fine-particle abrasion when non-contact shields let dust past in dirty duty
- grease aging in the shield-for-life cavity with no relubrication path
- cage damage from operation beyond the limiting speed
- electrical pitting in VFD-driven motors without grounding protection
Selection pitfalls — read before you substitute
- Miniature bearings like 61802-ZZ (15 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 618xx thin section at 15 mm bore has only a 4.5 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 6202.
- Do not wash 61802-ZZ in solvent before mounting: the grease inside the shielded cavity is the service fill, and solvent creeping past the shield gap strips it out.
- Shielded 61802-ZZ units are typically greased for life; prying the shields out for regreasing usually bends them and leaves a gap that throws grease in service.
- 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.
- 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 spells the shielded version 61802-2Z (one shield: 61802-Z), not "-ZZ": the suffix language differs by brand even though the ISO envelope is identical, so quote the brand designation when ordering.
- The 1.9/1.1 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 61802-ZZ bearing?
A 61802-ZZ deep-groove ball bearing has a 15 mm bore, 24 mm outer diameter and 5 mm width (0.591 × 0.945 × 0.197 in), per ISO 15 boundary dimensions. It is fitted with two non-contact metallic shields.
How should 61802-ZZ be mounted?
Apply the mounting force to the ring being fitted: on a 15 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 61802-ZZ need?
61802-ZZ is greased at the factory and the shields hold the fill for the bearing's service life; relubrication is not intended, and adding grease through the shield gap usually forces dirt in with it.
Why does 61802 not follow the bore-code × 5 rule?
Codes 00–03 use the exception table (10, 12, 15 and 17 mm): 61802 with code 02 has a 15 mm bore. The code × 5 convention starts at code 04 (20 mm).
What is the SKF designation and catalogue data for 61802-ZZ?
In the SKF Rolling Bearings catalogue this size is listed as 61802-2Z — two non-contact sheet-metal shields, 15×24×5 mm per ISO 15. Quoted values: C 1.9 kN, C0 1.1 kN, Pu 0.048 kN, limiting speed 30000 r/min, mass 7 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 61802-ZZ.
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.