NUKR-72-A bearing: complete specifications & equivalents

Specification table

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.

Cross references & equivalents

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-72-A model number is decoded

the 72 mm outside diameter runs on the track while the 24 mm stud shank takes the pin or shaft; the 80 mm overall width spreads the Hertzian contact over the outer ring published ratings C 45.7 kN and C0 58.5 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.78 is typical for full-complement cylindrical-roller cam follower executions fatigue load limit Pu 7.1 kN at 24 mm stud gives a specific load of 1.90 kN per mm; the limiting speed is 2,000 r/min the 80 mm width carries the load at 0.57 kN per mm of roller complement; section height 24.0 mm between stud and track surface determines the outer-ring bending stiffness mass 1000 g over a 72x80 mm envelope works out to 0.174 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-speed cam duty the 24 mm stud diameter falls in the small-size band, the most common choice for general-purpose cam followers and light conveyor transfer rollers reading NUKR: double-row full-complement cylindrical roller cam follower; the 24 mm stud carries the two roller rows and the outer ring is guided axially by the flange ring typical applications include printing press roller followers, automotive welding jig positioners and conveyor transfer and diverting rollers this size is commonly specified for printing press roller followers and automotive welding jig positioners, where the 72 mm track diameter and 24 mm stud fit standard cam and rail geometries in conveyor transfer and diverting rollers the 72 mm outer ring provides the rolling contact while the threaded stud simplifies mounting; the 1000 g mass is low enough for rapid indexing cycles 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

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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