NNF5011-ADB-2LSV bearing: complete specifications & equivalents
The NNF5011-ADB-2LSV is a ISO 15 radial bearing sized 55 x 90 x 46 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 | 55 mm |
| Outer diameter D | 90 mm |
| Width B | 46 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 128 kN |
| Basic static load rating C0 | 193 kN |
| Fatigue load limit Pu | 22.8 kN |
| Reference speed (thermal) | 1500 rpm |
| Limiting speed (mechanical) | 1500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1200 g |
| Manufacturer designation | SKF NNF 5011 ADB-2LSV |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 6.5 sealed double-row full complement cylindrical roller bearings |
| Last verified | 2026-09-26 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 6.5 sealed double-row full complement cylindrical roller bearings) · extracted 2026-09-26
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 6.5 sealed double-row full complement cylindrical roller bearings); 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 & NNF5000-series range
| Bore d | 2.165 in |
|---|---|
| Outer diameter D | 3.543 in |
| Width B | 1.811 in |
| ISO bore code | 11 |
| Radial section height (D−d)/2 | 17.5 mm |
| Smallest bore in NNF5000-series | 20 mm |
| Largest outer diameter in NNF5000-series | 420 mm |
| Width range across NNF5000-series | 30–190 mm |
| Bore position in NNF5000-series (smallest first) | 8 of 31 |
| Bore above smallest NNF5000-series size | 35 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NNCF5011-CV | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Open full-complement counterpart on the same 55×90×46 mm envelope; this ADB-2LSV row is sealed both sides and grease-packed with a lower limiting speed, and its catalogue ratings differ from the open execution. |
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 NNF5011-ADB-2LSV model number is decoded
NNF5011-ADB-2LSV is the 55 mm bore entry in the NNF5000 range: a 55×90×46 mm sealed double-row full-complement cylindrical roller bearing with a full complement of extra rollers fitted in place of a cage, rated C 128 kN / C0 193 kN. The NNF configuration means a double-row full complement bearing with contact seals on both sides, three integral inner-ring flanges, an annular lube groove in the outer ring and additional lubrication holes in the inner ring, delivered grease-packed; functionally the bearing is a sealed locating unit for very heavy radial loads; the sealed-for-life execution is the classic crane-sheave bearing. The ADB-2LSV suffix denotes nitrile-rubber contact seals (2LS) on both sides with the ADB snap-ring/ring-groove build; the bearing ships grease-filled. Selection arithmetic: C0/C ≈ 1.51 (193 against 128 kN), and the Pu figure 22.8 kN is the fatigue load-limit floor for the SKF life equation; SKF publishes only a limiting speed of 1,500 r/min for this sealed execution — the seal contact and packed grease, not a thermal reference speed, set the ceiling. Assembly note: mount as a complete sealed unit — never wash out the factory grease; the seals set the speed ceiling, and relubrication, where specified, goes through the ring grooves. Heat steel rings inductively to max 120 °C, and never wash a full-complement unit in a way that displaces rollers.
Typical equipment & failure modes
Common applications
- conveyor snub pulleys in dirty environments
- mobile-crane rope sheaves
- construction and access-machinery pulleys
Known failure patterns
- inner-ring raceway spalling from overload or contamination in the line-contact hertz zone
- outer-ring raceway fatigue after extended service at loads above the catalogue L10 rating
- seal-lip wear and grease loss in dusty crane and construction service after the relubrication interval is exceeded
- cage pocket wear from roller skidding at insufficient radial load or during start-up before oil film build-up
- surface distress (micro-pitting) when the EHL film falls below the composite roughness at high specific load
- grease degradation inside the sealed unit after long high-temperature periods, invisible until noise rises
- brinelling from static overload or impact during handling and mounting
Selection pitfalls — read before you substitute
- The sealed NNF unit is packed for life with the correct grease — do not heat it above the seal limit or wash it before mounting; damaged lip seals invalidate the heavy-load duty.
- The B1 width (45 mm inner-assembly width) differs from the overall B 46 mm; check housing and spacer geometry against both values.
- Press-fit force goes through ring faces only; driving a ring home through the rollers brinells the 90 mm raceway.
- Catalogue reference and limiting speeds are different criteria, though only the limiting speed is published for this sealed unit: observe the mechanical ceiling even when thermal calculations allow more.
- The 128/193 kN ratings are SKF catalogue 17000 (2018) values for the ADB-2LSV execution; re-verify against the current catalogue for critical drives and keep the catalogue version with the specification.
Frequently asked questions
What are the dimensions and catalogue data of NNF5011-ADB-2LSV?
SKF NNF 5011 ADB-2LSV is a sealed double-row full-complement cylindrical roller bearing with 55 mm bore, 90 mm OD and 46 mm width per ISO 15. SKF lists C 128 kN, C0 193 kN, Pu 22.8 kN, limiting speed 1,500 r/min (sealed execution), mass about 1200 g. Inner-assembly width B1 is 45 mm.
What does the NNF designation and ADB-2LSV suffix mean?
The ADB-2LSV suffix denotes nitrile-rubber contact seals (2LS) on both sides with the ADB snap-ring/ring-groove build; the bearing ships grease-filled. Structurally this execution has a double-row full complement bearing with contact seals on both sides, three integral inner-ring flanges, an annular lube groove in the outer ring and additional lubrication holes in the inner ring, delivered grease-packed.
Can NNF5011-ADB-2LSV take axial load and locate the shaft?
The sealed NNF unit can guide light axial loads in both directions via the flanged inner ring, but its primary duty is very heavy radial load in sealed positions.
How does NNF5011-ADB-2LSV compare with the other executions in the same envelope?
The sealed NNF execution shares its envelope with the open NNCF/NNCL/NNC full-complement bearings but is delivered grease-packed with contact seals and a much lower speed ceiling.
Does the sealed NNF bearing need relubrication?
NNF bearings are delivered grease-packed and sealed for long service; where the design provides relubrication grooves/holes, replenish through them at the prescribed interval. Never wash the bearing out or exceed the seal-limited speed.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 6.5 sealed double-row full complement cylindrical roller bearings on 2026-09-26. Read our editorial & correction policy.