NNF5032-B-2LS bearing: complete specifications & equivalents
The NNF5032-B-2LS is a ISO 15 radial bearing sized 160 x 240 x 109 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 | 160 mm |
| Outer diameter D | 240 mm |
| Width B | 109 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 781 kN |
| Basic static load rating C0 | 1400 kN |
| Fatigue load limit Pu | 153 kN |
| Reference speed (thermal) | 500 rpm |
| Limiting speed (mechanical) | 500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 16500 g |
| Manufacturer designation | SKF NNF 5032 B-2LS |
| 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 | 6.299 in |
|---|---|
| Outer diameter D | 9.449 in |
| Width B | 4.291 in |
| ISO bore code | 32 |
| Radial section height (D−d)/2 | 40 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) | 23 of 31 |
| Bore above smallest NNF5000-series size | 140 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NNCF5032-CV | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Open full-complement counterpart on the same 160×240×109 mm envelope; this B-2LS 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 NNF5032-B-2LS model number is decoded
In SKF catalogue PUB BU/P1 17000, SKF NNF 5032 B-2LS denotes a sealed double-row full-complement cylindrical roller bearing on the ISO 15 160×240×109 mm envelope, dimension series 50 (compact heavy section, wide), with catalogue mass 16500 g. Structurally, the NNF design 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. In arrangement terms it is a sealed locating unit for very heavy radial loads; the sealed-for-life execution is the classic crane-sheave bearing. The B-2LS suffix denotes nitrile-rubber contact seals on both sides of a grease-packed full-complement unit. The full complement of extra rollers fitted in place of a cage is reflected in the published speeds and temperature limits. With C 781 kN and C0 1400 kN, size the bearing on the 160×240 mm ISO 15 envelope and check the 153 kN Pu against the equivalent-load floor; SKF publishes only a limiting speed of 500 r/min for this sealed execution — the seal contact and packed grease, not a thermal reference speed, set the ceiling. Mounting: 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. A 160 mm seat normally takes a m6 interference with an H6 housing bore when the inner ring rotates.
Typical equipment & failure modes
Common applications
- mining dragline and shovel rope sheaves
- large offshore hook blocks and jib sheaves
- heavy dock and shipyard crane systems
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
- polymer cage cracking or softening after sustained running above 120 °C or with incompatible lubricant
- roller-end scoring from inadequate oil flow in the roller-raceway contact
- grease degradation inside the sealed unit after long high-temperature periods, invisible until noise rises
- electrical pitting on VFD-driven shafts without grounding protection
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 (108 mm inner-assembly width) differs from the overall B 109 mm; check housing and spacer geometry against both values.
- 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.
- Shaft and housing fillets must clear the bearing chamfers; an oversized radius tilts the 109 mm-wide ring and concentrates load.
- The 781/1400 kN ratings are SKF catalogue 17000 (2018) values for the B-2LS 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 NNF5032-B-2LS?
SKF NNF 5032 B-2LS is a sealed double-row full-complement cylindrical roller bearing with 160 mm bore, 240 mm OD and 109 mm width per ISO 15. SKF lists C 781 kN, C0 1400 kN, Pu 153 kN, limiting speed 500 r/min (sealed execution), mass about 16500 g. Inner-assembly width B1 is 108 mm.
What does the NNF designation and B-2LS suffix mean?
The B-2LS suffix denotes nitrile-rubber contact seals on both sides of a grease-packed full-complement unit. 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 NNF5032-B-2LS 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 NNF5032-B-2LS 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.