NUKR-80-A bearing: complete specifications & equivalents
The NUKR-80-A is a ISO 15 radial bearing sized 30 x 80 x 100 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 30 mm |
| Outer diameter D | 80 mm |
| Width B | 100 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 69.3 kN |
| Basic static load rating C0 | 86.5 kN |
| Fatigue load limit Pu | 10.8 kN |
| Limiting speed (mechanical) | 1900 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1600 g |
| Manufacturer designation | NUKR 80 A |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 15 support rollers / ch. 16 cam followers |
| Last verified | 2026-09-30 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 15 support rollers / ch. 16 cam followers) · extracted 2026-09-30
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 15 support rollers / ch. 16 cam followers); 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 & NUKR-series range
| Bore d | 1.181 in |
|---|---|
| Outer diameter D | 3.15 in |
| Width B | 3.937 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 25 mm |
| Smallest bore in NUKR-series | 16 mm |
| Largest outer diameter in NUKR-series | 90 mm |
| Width range across NUKR-series | 52–100 mm |
| Bore position in NUKR-series (smallest first) | 7 of 8 |
| Bore above smallest NUKR-series size | 14 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NUKR | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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 NUKR-80-A model number is decoded
the 80 mm outside diameter runs on the track while the 30 mm stud shank takes the pin or shaft; the 100 mm overall width spreads the Hertzian contact over the outer ring published ratings C 69.3 kN and C0 86.5 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.80 is typical for full-complement cylindrical-roller cam follower executions fatigue load limit Pu 10.8 kN at 30 mm stud gives a specific load of 2.31 kN per mm; the limiting speed is 1,900 r/min the 100 mm width carries the load at 0.69 kN per mm of roller complement; section height 25.0 mm between stud and track surface determines the outer-ring bending stiffness mass 1600 g over a 80x100 mm envelope works out to 0.200 g per mm² of projected area — a useful figure when sizing the drive inertia for low-speed cam duty with a 30 mm stud shank this is a medium-size track roller — the envelope is large enough for sealed, greased-for-life executions without sacrificing dynamic capacity reading NUKR: double-row full-complement cylindrical roller cam follower; the 30 mm stud carries the two roller rows and the outer ring is guided axially by the flange ring typical applications include woodworking machinery feed rollers, cam mechanisms and indexing drives and material handling lift and lower tracks this size is commonly specified for woodworking machinery feed rollers and cam mechanisms and indexing drives, where the 80 mm track diameter and 30 mm stud fit standard cam and rail geometries in material handling lift and lower tracks the 80 mm outer ring provides the rolling contact while the threaded stud simplifies mounting; the 1600 g mass is low enough for rapid indexing cycles the two cylindrical roller rows share the outer ring bending load; a misaligned track concentrates the load on one row and halves the life the stud head and pressed-on flange ring provide the only axial guidance — side thrust from a helical cam can dislodge the flange
Typical equipment & failure modes
Common applications
- packaging machine timing cams
- woodworking machinery feed rollers
- glass processing line conveyors
- linear guide and track systems
Known failure patterns
- the two cylindrical roller rows share the outer ring bending load; a misaligned track concentrates the load on one row and halves the life
- the stud head and pressed-on flange ring provide the only axial guidance — side thrust from a helical cam can dislodge the flange
- full-complement cylindrical rollers are stiff but unforgiving: any shaft deflection directly increases edge stress
- the twin-row construction is the widest cam follower option; verify the track channel width accommodates the full B dimension
- the heavy section and full complement make this the stiffest cam follower — any stud bending directly increases edge stress
- the cylindrical rollers are crowned at the ends to reduce edge stress; do not confuse this with the PPA crowned outer-ring profile
Selection pitfalls — read before you substitute
- the cylindrical rollers are crowned at the ends to reduce edge stress; do not confuse this with the PPA crowned outer-ring profile
- the two cylindrical roller rows share the outer ring bending load; a misaligned track concentrates the load on one row and halves the life
- the stud head and pressed-on flange ring provide the only axial guidance — side thrust from a helical cam can dislodge the flange
Frequently asked questions
What are the dimensions of the NUKR-80-A?
NUKR-80-A is a full-complement cylindrical-roller cam follower with 80 mm outside diameter, 30 mm stud shank diameter and 100 mm overall width. The stud is 30 mm and the track contact diameter is 80 mm.
What does the NUKR designation mean?
The NUKR prefix identifies this as a full-complement cylindrical-roller cam follower. In the SKF catalogue this designation carries the full specification including the 80x30x100 mm envelope and the 1900 r/min limiting speed.
What is the load capacity of NUKR-80-A?
The published basic dynamic load rating C is 69.3 kN and the basic static load rating C0 is 86.5 kN. These values already include the bending-stress correction for the thick-walled outer ring running on a track.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 15 support rollers / ch. 16 cam followers on 2026-09-30. Read our editorial & correction policy.