NUTR-3072-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 NUTR-3072-A model number is decoded

the 72 mm outside diameter runs on the track while the 30 mm bore takes the pin or shaft; the 29 mm overall width spreads the Hertzian contact over the outer ring published ratings C 48.4 kN and C0 61 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.79 is typical for double-row full-complement support roller, no integral flange executions fatigue load limit Pu 7.5 kN at 30 mm bore gives a specific load of 1.61 kN per mm; the limiting speed is 2,600 r/min the 29 mm width carries the load at 1.67 kN per mm of roller complement; section height 21.0 mm between bore and track surface determines the outer-ring bending stiffness mass 700 g over a 72x29 mm envelope works out to 0.335 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-speed cam duty with a 30 mm bore this is a medium-size track roller — the envelope is large enough for sealed, greased-for-life executions without sacrificing dynamic capacity reading NUTR: twin-row cylindrical roller support roller, no cage, no integral flange; the 72 mm track surface and 30 mm bore carry the heaviest radial ratings in this catalogue section reading the A suffix: improved design execution with optimised roller complement and surface finish for better performance at the same envelope dimensions typical applications include automatic assembly machine linkages, food processing line track rollers and printing press roller followers this size is commonly specified for automatic assembly machine linkages and food processing line track rollers, where the 72 mm track diameter and 30 mm bore fit standard cam and rail geometries in printing press roller followers the 72 mm outer ring provides the rolling contact while the inner ring bore simplifies mounting; the 700 g mass is low enough for rapid indexing cycles the two roller rows share the outer ring bending load; a misaligned track concentrates the load on one row and halves the life the heavy section and full complement make this the stiffest support roller — any shaft deflection directly increases edge stress

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• relubrication is difficult because the roller rows are packed; follow the greasing interval strictly
• the two roller rows share the outer ring bending load; a misaligned track concentrates the load on one row and halves the life
• the heavy section and full complement make this the stiffest support roller — any shaft deflection directly increases edge stress