319426-B-2LS bearing: complete specifications & equivalents
The 319426-B-2LS is a ISO 15 radial bearing sized 130 x 190 x 80 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 | 130 mm |
| Outer diameter D | 190 mm |
| Width B | 80 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 446 kN |
| Basic static load rating C0 | 815 kN |
| Fatigue load limit Pu | 91.5 kN |
| Reference speed (thermal) | 670 rpm |
| Limiting speed (mechanical) | 670 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 7300 g |
| Manufacturer designation | SKF 319426 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 & NNF4900-series range
| Bore d | 5.118 in |
|---|---|
| Outer diameter D | 7.48 in |
| Width B | 3.15 in |
| ISO bore code | 26 |
| Radial section height (D−d)/2 | 30 mm |
| Smallest bore in NNF4900-series | 130 mm |
| Largest outer diameter in NNF4900-series | 340 mm |
| Width range across NNF4900-series | 80–95 mm |
| Bore position in NNF4900-series (smallest first) | 1 of 11 |
| Bore above smallest NNF4900-series size | 0 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 319426-B-2LS model number is decoded
For a 130 mm shaft, SKF lists 319426-B-2LS as sealed double-row full-complement cylindrical roller: 190 mm OD, 80 mm wide, Pu 91.5 kN, with a sealed limiting speed of 670 r/min. 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 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. The six-digit order number is SKF's earlier designation convention retained for this 49-series envelope; it is still the factory order number rather than an NNF-series code. Selection arithmetic: C0/C ≈ 1.83 (815 against 446 kN), and the Pu figure 91.5 kN is the fatigue load-limit floor for the SKF life equation; SKF publishes only a limiting speed of 670 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 130 mm seat normally takes a m6 interference with an H6 housing bore when the inner ring rotates.
Typical equipment & failure modes
Common applications
- large offshore hook blocks and jib sheaves
- heavy dock and shipyard crane systems
- mining dragline and shovel rope sheaves
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
- 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
- false brinelling on standby machines exposed to external vibration
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 (79 mm inner-assembly width) differs from the overall B 80 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 190 mm raceway.
- Shaft and housing fillets must clear the bearing chamfers; an oversized radius tilts the 80 mm-wide ring and concentrates load.
- The 446/815 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 319426-B-2LS?
SKF 319426 B-2LS is a sealed double-row full-complement cylindrical roller bearing with 130 mm bore, 190 mm OD and 80 mm width per ISO 15. SKF lists C 446 kN, C0 815 kN, Pu 91.5 kN, limiting speed 670 r/min (sealed execution), mass about 7300 g. Inner-assembly width B1 is 79 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 319426-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 319426-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.